Model GN-8620
FURUNO GNSS Receiver
Model
GN-8620
Hardware Specifications
(Document No. SE16-410-007-02)
www.furuno.com
GN-8620 Hardware Specifications
SE16-410-007-02
IMPORTANT NOTICE
No part of this manual may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, for any purpose without the express written permission of
the publisher, FURUNO ELECTRIC CO., LTD.
FURUNO ELECTRIC CO., LTD. All rights reserved.
Any information of this documentation shall not be disclosed to any third party without permission of the
publisher, FURUNO ELECTRIC CO., LTD.
FURUNO ELECTRIC CO., LTD. reserves the right to make changes to its products and specifications
without notice.
All brand and product names are registered trademarks, trademarks or service marks of their respective
holders.
The following satellite systems are operated and controlled by the authorities of each government.
- GPS(USA)
- Galileo(Europe)
- QZSS(Japan)
- SBAS(USA: WAAS, Europe: EGNOS, Japan: MSAS)
Thus FURUNO is not liable for the degradation of the above systems so therefore FURUNO cannot guarantee
specification based on their conditions. User is expected to be familiar with the System and make full use of it
with their own responsibility.
GN-8620 Hardware Specifications
SE16-410-007-02
Revision History
Version
0
1
2
Changed contents
Initial release
Corrected the description order of GNSS reception capability in Table 2.1.
Added Notes 4) in Chapter 2.
Corrected PU/PD for TXD2 in Table 5.1.
Added Notes for equivalent pull-up/pull-down resistor in Table 6.3.
Added Section 6.3.2.
Corrected the equivalent circuit for TXD2 in Table 8.1.
Updated the reference document in Chapter 15.
Updated Section 6.3.2.
Date
2016.07.08
2016.09.30
2016.10.07
GN-8620 Hardware Specifications
SE16-410-007-02
Table of Contents
1
2
3
4
5
6
Outline ······················································································································ 1
GNSS General Specifications ······················································································· 1
GNSS General Performance ························································································· 2
Functional Overview ··································································································· 3
I/O Signal Description ·································································································· 4
Electrical Characteristics ····························································································· 5
6.1
Absolute Maximum Rating ····························································································· 5
6.2
Power Supply ··············································································································· 6
6.3
Interface ······················································································································ 7
6.3.1
Interface Signal ······································································································· 7
6.3.2
Precaution on Using the Input Pin with Pull-up Resistor ·············································· 7
6.4
Reset··························································································································· 8
6.4.1
Internal Power-on Reset··························································································· 8
6.4.2
External Reset ········································································································ 8
6.5
UART Wake-up Timing after Reset ·················································································· 9
6.5.1
Without External Reset ···························································································· 9
6.5.2
With External Reset ································································································· 9
6.5.3
Baud Rate Setting ································································································· 10
6.6
Recommended GNSS Antenna ······················································································ 10
6.6.1
Active Antenna ····································································································· 10
6.6.2
Passive Antenna ··································································································· 10
7 Environmental Specifications ····················································································· 11
8 Equivalent Circuit ····································································································· 11
9 Mechanical Specifications ·························································································· 13
9.1
Package Dimension ····································································································· 13
9.2
Electrode ···················································································································· 13
9.3
Weight ························································································································ 13
9.4
Pin Position List ·········································································································· 14
10
Reference Design··································································································· 14
10.1 Recommended Land Pattern ························································································· 14
10.2 Example of Connection ································································································ 15
10.2.1 With Active Antenna ······························································································ 15
10.2.2 With Passive Antenna ···························································································· 16
11
Marking ················································································································ 17
12
Handling Precaution ······························································································· 18
13
Solder Profile ········································································································ 19
13.1 Reflow Profile ·············································································································· 19
13.2 Precaution about Partial Heating with the Way except Reflow ··········································· 20
14
Special Instruction ································································································· 20
14.1 Electronic Component ·································································································· 20
14.2 RoHS·························································································································· 20
15
Reference Documents ···························································································· 20
GN-8620 Hardware Specifications
SE16-410-007-02
1 Outline
GN-8620 is a stand-alone, complete GNSS receiver module. Main features are as follows:

Supports GPS, SBAS, QZSS and Galileo

Outputs a time pulse (1PPS) synchronized to UTC time

Software upgrade capability by Flash ROM

Active Anti-jamming capability to suppress effects of CW jammers

Multi path mitigation effects

Works in both Autonomous mode and Assisted mode

GPS high indoor sensitivity

Fast TTFF of typically <1 second when in hot and 30 seconds in warm and 33 seconds in cold start
conditions

Available of active and passive antenna

Low profile, small SMT package reducing the mounting area and mounting cost
2 GNSS General Specifications
Items
Table 2.1 General Specifications
Description
GPS L1C/A
△1
GNSS reception
capability1)2)
GNSS concurrent
reception1)
Environment robustness
performance
Extended Ephemeris
Data update rate
Serial data format
Antenna
Operational limits
Galileo E1B/E1C
Notes
12
3)4)
8
QZSS L1C/A
2
SBAS L1C/A
2
GPS, Galileo, QZSS,
SBAS
Active Anti-jamming
Multipath Mitigation
Self assisted for GPS
Server based for GPS
GNSS
NMEA5)
FURUNO Binary5)
Active antenna
Passive antenna
Altitude
Velocity
PRN number is 120 to 138 of WAAS,
MSAS, EGNOS, GAGAN
24
8CW
●
3 days
7 days
Up to 10Hz
●
●
●
●
18,300m
515 m/s
Flash ROM base
Based on Wassenaar arrangement
specification
Notes:
1) Update rate is 1Hz.
2) Satellite systems are selectable from GPS, Galileo, SBAS and QZSS. GPS and/or Galileo are required for
positioning.
3) When a leap second is inserted during Galileo only positioning, the outputted UTC time is one second
fast/behind.
△1 4) GN-8620 was developed based on the Galileo Open Service Signal-In-Space Interface Control Document
Issue 1.1 (OS SIS ICD v1.1). Software updates may be required due to change contents of the Galileo OS
SIS ICD v1.1.
OS SIS ICD, Issue 1.1, September 2010© European Union 2010
5) See the protocol specifications for details.
1
GN-8620 Hardware Specifications
SE16-410-007-02
3 GNSS General Performance
Table 3.1 General Performance
TA=25°C
Items
Description
TTFF
GPS sensitivity2)
2)
Galileo sensitivity
QZSS sensitivity2)
SBAS sensitivity2)
Notes
Hot Outdoor1)
Warm Outdoor
Cold Outdoor
<1 s
30 s
33 s
These are specified with the measurement
platform shown in Figure 3.1. Simulator
output level is set to -130 dBm.
Hot Indoor
9s
These are specified with the measurement
platform shown in Figure 3.1. Simulator
output level is set to -150 dBm.
-161 dBm
-161 dBm
-147 dBm
-161 dBm
-145 dBm
-135 dBm
-135 dBm
-135 dBm
-146 dBm
-138 dBm
These are specified with the measurement
platform shown in Figure 3.1.
Tracking
Hot Acquisition
Cold Acquisition
Reacquisition
Tracking
Hot Acquisition
Cold Acquisition
Reacquisition
Tracking
Tracking
2.5m CEP
Horizontal Outdoor
Position accuracy2)
2.0m CEP
Horizontal Indoor
PPS accuracy2)
1σ
19m CEP
10 μs
GPS only
Open sky 24 hours with recommended
antenna
GPS and SBAS
Open sky 24 hours with recommended
antenna
These are specified with the measurement
platform shown in Figure 3.1. Simulator
output level is set to -150 dBm.
Open sky, static with recommended antenna
Notes:
1) Time to fix from the Hot start command input at fixsession off state when GPS is used in position fix.
2) Update rate is 1Hz.
Multi - GNSS Simulator
GSS 6700
GN - 8620
Evaluation Board
External LNA
PC
Gain : 30 . 4 dB
NF : 0 .6 dB
Including Cable
Loss
LNA Setting: Low Gain
Figure 3.1 Measurement Platform
2
GN-8620 Hardware Specifications
SE16-410-007-02
4 Functional Overview
GN-8620 is a stand-alone, complete GNSS receiver module that can provide accurate GNSS PVT (Position,
Velocity & Time) information through serial communication channel. The key device inside is eRideOPUS 6,
the latest monolithic GNSS receiver chip that contains ARM9TM processor for signal tracking and processing,
high performance integrated LNA, PLL Synthesizer, Down-converter, ADC and DSP. GN-8620 also contains
Flash ROM for firmware and data storage, TCXO for reference clock, 32 kHz crystal for RTC (Real time clock),
L1 band SAW filter and power-on reset circuit. The block diagram is shown in Figure 4.1.
GN-8620 has power-on reset function inside. It detects VCC input voltage, and sets internal power-on reset
signal (POR_N) to logic L when the voltage is lower than power-on reset threshold voltage shown in Table 6.4.
GN-8620 also has external reset signal input, RST_N, which allows to force GN-8620 reset by external control.
RST_N and POR_N are Wired-OR to create internal reset signal for initializing whole module.
FLNA pin has a special function to configure LNA gain. In case this pin is connected to VCC, internal LNA is
set to low gain mode. And in case of no connection (open), high gain mode is selected. So for active antenna,
this pin should be connected to VCC, and for passive antenna open.
ANT_DET0/ANT_DET1 pins are used to feed the status of active antenna connection to ARMTM subsystem
from the antenna current detection circuit placed outside of GN-8620. These signals can show three (3) states
of antenna connection; normal, open (low current) and short (high current). For details, please refer “FURUNO
GPS/GNSS Receiver 86/87 series User's Design Guide (SE13-900-001)”.
Reserved pins have pull-up or pull-down resistors inside adequately, so please do not connect anything.
VCC
GN-8620
VBK
SAW Filter
TXD1
eRideOPUS
eRideOPUS 6
RXD1
RF_IN
VCC_RF
Integrated
LNA
RF Block
DSP
PLL Synthesizer
Downconverter
ADC
Anti-jamming
Multipath
mitigation
TXD2_SCL
RXD2_SDA
PPS
ANT_DET0
ANT_DET1
GPIO
Sub System
FLNA
ECNT
POR_N
RST_N
Wired-OR
26MHz
TCXO
Flash ROM
GND
Figure 4.1 Block Diagram
3
32kHz
XO
GN-8620 Hardware Specifications
SE16-410-007-02
5 I/O Signal Description
Table 5.1 I/O Signal Description
PU/PD1)
#
Pin Name
Type
1
RESERVED
-
-
2
FLNA
Digital Input
Pull-down
3
PPS
Digital Output
Pull-down
4
5
6
7
RESERVED
ANT_DET1
ANT_DET0
RESERVED
Digital Input
Digital Input
-
Pull-up
Pull-up
-
8
RST_N
Digital
Input/Output
9
10
11
12
13
14
VCC_RF
GND
RF_IN
GND
GND
RESERVED
Power Output
Analog Input
-
15
RESERVED
-
16
17
18
19
20
21
RESERVED
RESERVED
RXD2
TXD2
TXD1
RXD1
Digital Input
Digital Output
Digital Output
Digital Input
22
VBK
Power Input
23
24
VCC
GND
Power Input
-
Description
Do not connect anything
LNA gain select pin
Logic L (leave open)
Logic H (connect to VCC)
PPS output pin
Do not pull-up externally2)
Do not connect anything
: High Gain
: Low Gain
Antenna detection input pins3)
Do not connect anything
External reset signal input pin
Pull-up
Logic L
: Reset
4)
Logic H (Open)
: Normal operation
Power supply output pin for active antenna
Ground
GNSS signal input pin
Ground
Ground
Do not connect anything
Do not connect anything
Do not pull-up externally2)
Do not connect anything
Do not connect anything
Pull-up
UART2 reception port
Pull-up △1 UART2 transmission port
UART1 transmission output pin
Pull-up
UART1 reception input pin
Backup power supply input pin
Leave open if battery backup function is not used
Main power supply input pin
Ground
Notes:
1) Pull-up and pull-down resistor values are shown in Table 6.3.
2) These pins have pull-down resistors inside to ensure power-on configuration, so it is prohibited to connect
any pull-up resistor at the outside of the module.
3) For details, see FURUNO GPS/GNSS Receiver 86/87 series User's Design Guide (SE13-900-001).
4) RST_N is Wired-OR with internal power-on reset (POR_N) signal, so please drive with open-drain or
open-collector device.
4
GN-8620 Hardware Specifications
SE16-410-007-02
6 Electrical Characteristics
6.1
Absolute Maximum Rating
The lists of absolute maximum ratings are specified over operating case temperature shown in Table 7.1.
Stresses beyond those listed under those range may cause permanent damage to module.
Items
Table 6.1 Absolute Maximum Rating
Symbol
Min.
Max.
Unit
Supply voltage
Backup supply voltage
Digital input (DI) voltage
Digital output (DO) current
VCC_RF output current
VCC_ABS
VBK_ABS
ICC_RF_ABS
RF_IN input power
(High Gain mode)
PRFINH_ABS
RF_IN input power
(Low Gainmode)
PRFINL_ABS
-0.3
-0.3
-0.3
-
4.0
4.0
4.0
±7
150
-20
1
1
-5
0
-1
5
V
V
V
mA
mA
dBm
dBm
dBm
dBm
dBm
dBm
Notes
at 1575.42MHz & 1602MHz
at 900MHz
at 1800MHz
at 1575.42MHz & 1602MHz
at 900MHz
at 1800MHz
GN-8620 Hardware Specifications
SE16-410-007-02
6.2
Power Supply
Table 6.2 Power Supply Characteristics
Items
Supply voltage to VCC
Backup supply to VBK
Rising slew rate of VCC
Rising slew rate of VBK
Output voltage from VCC_RF
VCC current consumption
Low Gain mode (FLNA: High)
VCC current consumption
High Gain mode (FLNA: Open)
VBK current consumption at
back up
VBK current consumption at
normal operation)
Symbol
Min.
Typ.
VCC
3
3.3
VBK
1.4
VCC_SR
VBK_SR
3.6
VCC_RF VCC-0.2
ICCAL
53.5
Max.
3.6
3.6
3.6x104 1)
3.6x104 1)
VCC
101.5
TA=25°C, unless otherwise stated
Unit
Notes
V
V
V/s See Figure 6.1
V/s See Figure 6.1
V
ICC RF=100mA
mA Full search @TA=85°C
Tracking satellite outdoor
mA
@-130dBm signal level
mA Full search @TA=85°C
Tracking satellite outdoor
mA
@-130dBm signal level
ICCTL
-
51.5
-
ICCAH
-
61
109
ICCTH
-
59
-
IBKN
-
9
20
μA
VCC=0V
IBKB
-
0.4
2
μA
VCC=3.3V
Notes:
1) When the rising slew rate of VCC and VBK is more than 3.6x104 V/s, the internal ESD protection circuit turns
on during the voltage rising and the inrush current of the power supply may be increased. However, it does
not cause damage to the module.
VCC, VBK
⊿V
⊿t
VCC_SR, VBK_SR=⊿V/⊿t
Figure 6.1 Rising Slew Rate
6
GN-8620 Hardware Specifications
SE16-410-007-02
6.3
6.3.1
Interface
Interface Signal
Items
Symbol
Logic L input voltage
Logic H input voltage
Hysteresis voltage
Logic L output voltage
Logic H output voltage
Equivalent pull-up resistor
Equivalent pull-down resistor
VIL
VIH
Vhst
VOL
VOH
RPU
RPD
6.3.2
Table 6.3 Interface Signal
Min.
Typ.
Max.
2.0
0.31
2.4
29
30
41
44
0.8
0.4
62
72
Unit
V
V
V
V
V
kΩ
kΩ
Notes
@|lOL| = 2mA
@|IOH| = 2mA
@VI = 3.3V △1
@VI = 0V
△1
Precaution on Using the Input Pin with Pull-up Resistor △1
If the input pin with a pull-up resistor (5.ANT_DET1, 6.ANT_DET0, 8.RST_N, 18.RXD2, 21.RXD1) is
△2
connected to a signal source through an in-series resistor Rin (that includes the output impedance of the signal
source), Rin must be less than or equal to 180Ω.
VCC
Input pin with
pull-up resistor
Signal source
In-series resistor
Rin
Figure 6.2 Precaution on Using the Input Pin with Pull-up Resistor
7
GN-8620 Hardware Specifications
SE16-410-007-02
6.4
6.4.1
Reset
Internal Power-on Reset
GN-8620 contains internal power-on reset circuit which detects VCC voltage and creates POR_N (power-on
reset) signal for initializing module. Table 6.4 shows the threshold voltages to detect and create POR_N signal.
Table 6.4 Power-on Reset Voltage
Items
Symbol
Min.
Typ.
Power On Reset threshold voltage (rising)
VRTH_POR
Power On Reset threshold voltage (falling)
VFTH_POR
2.7
-
6.4.2
Max.
3.0
-
Unit
V
V
Notes
External Reset
In most cases, it is not required to drive external reset input (RST_N) pin. However, if it is needed to force
being in reset state externally for e.g. synchronizing reset state with application circuitry, RST_N can be used
for this purpose. RST_N should be driven by open-drain or open-collector device for avoiding any collision with
internal power-on reset driver.
H
VRTH_POR
VCC
L
Internal
Power on Reset
H
TPOR
L
H
TRSTLW
RST_N
L
Internal
CPU Reset1)
H
L
Figure 6.3 Reset Sequence
Table 6.5 Reset Sequence
Items
Symbol
Internal power on reset released time after VCC reaches
TPOR
VRTH_POR
Reset pulse width
TRSTLW
Min.
Max.
Unit
150
250
ms
300
-
ms
Notes
Notes:
1) CPU reset is released when both the internal power on reset and the external reset (RST_N) are released.
8
GN-8620 Hardware Specifications
SE16-410-007-02
6.5
UART Wake-up Timing after Reset
6.5.1
Without External Reset
H
VRTH_POR
VCC
L
t1ITXD1
TXD1
Valid
t1IRXD1
RXD1
Ready
Figure 6.4 UART Wake-up Timing after VRTH_POR
Table 6.6 UART Wake-up Timing after VRTH_POR
Items
Symbol
Min.
Max.
Time delay from VCC reaches VRTH_POR to TXD1 valid
Time delay from VCC reaches VRTH_POR to RXD1 ready
6.5.2
t1ITXD1
t1IRXD1
-
Unit
400
600
Notes
ms
ms
With External Reset
H
RST_N
L
t1XTXD1
TXD1
Valid
t1XRXD1
RXD1
Ready
Figure 6.5 UART Wake-up Timing after RST_N
Items
Table 6.7 UART Wake-up Timing after RST_N
Symbol
Min.
Max.
Time delay from RST_N set to H to TXD1 valid
Time delay from RST_N set to H to RXD1 ready
t1XTXD1
t1XRXD1
9
-
200
400
Unit
ms
ms
Notes
GN-8620 Hardware Specifications
SE16-410-007-02
6.5.3
Baud Rate Setting
The UART inside GN-8620 can handle various baud rate serial data shown in Table 6.8. The baud rate clock is
created from 71.5 MHz system clock, hence it has some deviation errors against ideal baud rate clock as
shown in Table 6.8.
Table 6.8 Baud Rate vs. Deviation Error
Baud rate [bps]
Deviation error [%]
4800
+0.00
9600
+0.11
19200
-0.11
38400
+0.32
57600
-0.54
115200
-0.54
230400
+2.08
460800
-3.02
6.6
6.6.1
Recommended GNSS Antenna
Active Antenna
Items
GPS center frequency
Antenna element gain
Amplifier gain1
Amplifier gain2
Amplifier NF
Impedance
VSWR
Table 6.9 Recommended Active Antenna
Min.
Typ.
Max.
Unit
Notes
1575.42
MHz
2.046 MHz bandwidth
0
dBi
Including cable loss
10
351)
dB
High Gain mode (FLNA: Open)
Including cable loss
15
501)
dB
Low Gain mode (FLNA: High)
1.5
3
dB
Including cable loss
50
Ω
2
-
Notes:
1) For best jammer resistance (and lower power consumption) use 10 dB lower gain than the max gain.
6.6.2
Passive Antenna
Items
GPS center frequency
Antenna element gain
Impedance
VSWR
Table 6.10 Recommended Passive Antenna
Min.
Typ.
Max.
Unit
1575.42
MHz
0
dBi
50
Ω
2
-
10
Notes
2.046 MHz bandwidth
FLNA: Open
GN-8620 Hardware Specifications
SE16-410-007-02
7 Environmental Specifications
Items
Operating temperature
Storage temperature
Operation humidity
Table 7.1 Environmental Specifications
Specification
Unit
Notes
-40 to +85
°C
-40 to +85
°C
%R.H
TA= 60°C, No condensation
85(MAX)
8 Equivalent Circuit
Pin Name
Table 8.1 Equivalent Circuit
Equivalent Circuit
VCC
1. RESERVED,
5.ANT_DET1,
6.ANT_DET0,
17. RESERVED,
18. RXD2,
19. TXD2, △1
21.RXD1
RPU
VCC
RPU
8.RST_N
POR_N
(Internal power on reset)
11
GN-8620 Hardware Specifications
SE16-410-007-02
Pin Name
Equivalent Circuit
2.FLNA,
3.PPS,
4. RESERVED,
7. RESERVED,
14. RESERVED,
15. RESERVED,
16. RESERVED
RPD
20.TXD1
VBK
To backup
section
VCC
DET
9.VCC_RF,
22.VBK,
23.VCC
To main
digital section
To analog
section
VCC_RF
AC coupling capacitor
Rated voltage: 50V
11.RF_IN
Integrated LNA
12
GN-8620 Hardware Specifications
SE16-410-007-02
9 Mechanical Specifications
Package Dimension
H
C
9.1
SEATING PLANE
Y
M
N
B
K
1 pin
G
E
F
E
D
A
Figure 9.1 Package Dimension
Table 9.1 Package Dimension
Min. [mm]
Typ. [mm]
A
B
C
D
E
F
G
H
K
M
N
Y1)
15.8
12.0
2.6
0.9
1.0
2.9
0.9
0.7
0.8
0.4
-
16.0
12.2
2.8
1.0
1.1
3.0
1.0
0.6
0.8
0.9
0.5
-
Max. [mm]
16.2
12.4
3.0
1.1
1.2
3.1
1.1
0.9
1.0
0.6
0.1
Notes:
1) The height of the terminals to the mounting surface
9.2
Electrode
Electrode Material: Cu
Metallic Finishing: Electroless gold flashing (Au: 0.03 μ and over Ni: 3 μ and over)
9.3
Weight
1.01g (TYP)
13
GN-8620 Hardware Specifications
SE16-410-007-02
9.4
Pin Position List
13: GND
12: GND
14: RESERVED
15: RESERVED
11: RF _IN
10: GND
9: VCC_RF
16: RESERVED
17: RESERVED
8: RST_N
TOP VIEW
18: RXD2
7: RESERVED
19: TXD2
6: ANT_DET0
20: TXD1
5: ANT_DET 1
4: RESERVED
21: RXD1
22: VBK
23: VCC
24: GND
3: PPS
2: FLNA
1: RESERVED
Figure 9.2 Pin Position List
10 Reference Design
10.1 Recommended Land Pattern
0.8
3.0
Pattern
Prohibition Area 1)
12.2
1 pin
1.0
1.1
16.0
0.8
0.9
Unit: [mm]
Figure 10.1 Recommended Land Pattern
Notes:
1) At the bottom of the module, there are some signal lines and via holes. For avoiding any signal shortage,
please do not put any signal line nor via hole at the part of the user’s board where is facing to the bottom of the
module.
14
GN-8620 Hardware Specifications
SE16-410-007-02
10.2 Example of Connection
10.2.1 With Active Antenna
Active antenna
VANT
(*1)
GND
GND
12
14
RESERVED
RF_IN
11
15
RESERVED
GND
10
16
RESERVED
VCC_RF
9
17
RESERVED
RST_N
8
18
RXD2
RESERVED
7
19
TXD2
ANT_DET0
6
20
TXD1
ANT_DET1
5
21
RXD1
RESERVED
4
22
VBK
PPS
3
23
VCC
FLNA
2
24
GND
RESERVED
1
L DC FEED
13
LNA
(*2)
(*1)
VCC
Option
Battery
Figure 10.2 Example of Connection (with Active Antenna)
Notes:
1) VCC_RF, power supply output pin, can be used for VANT. However, when the signal line which the VANT
voltage is superposed is short-circuited, the VCC_RF output current may exceed the absolute maximum
rating ICC_RF_ABS. Therefore, it is recommended to implement an over current protection circuit for preventing
an over current.
2) In case of using an external antenna, it is recommended to implement the ESD protection with an ESD
protection diode or a λ/4 short stub for preventing excessive stress to the RF_IN pin. Please refer “FURUNO
GPS/GNSS Receiver 86/87 series User's Design Guide (SE13-900-001)” about the λ/4 short stub.
15
GN-8620 Hardware Specifications
SE16-410-007-02
10.2.2 With Passive Antenna
Passive
antenna
13
GND
GND
12
14
RESERVED
RF_IN
11
15
RESERVED
GND
10
9
16
RESERVED
VCC_RF
17
RESERVED
RST_N
8
18
RXD2
RESERVED
7
19
TXD2
ANT_DET0
6
20
TXD1
ANT_DET1
5
21
RXD1
RESERVED
4
22
VBK
PPS
3
23
VCC
FLNA
2
24
GND
RESERVED
1
VCC
Option
Battery
Figure 10.3 Example of Connection (with Passive Antenna)
16
GN-8620 Hardware Specifications
SE16-410-007-02
11 Marking
Logo
Product No.
GN-8620A
Lot No.
Serial No.
Pin #1
Country of Origin
(1) Logo
(2) Product No.
FURUNO
GN-8620A
G N - 8 6 2 0 A
Hardware/ Software Rev.
Product Name
(3) Lot No.
LOT 37021
LOT 3 7 02 1
a
b
c
d
e
#
Code
Description
a
b
c
d
e
LOT
3
7
02
1
“LOT”
Year (last digit of the year number: 2015=5)
Month (1 to 9, X, Y, Z)
Date (01 to 31)
Internal control number
(4) Serial No.
12345678
Individual unique number
(5) Country of origin
Japan
(6) Pin 1 symbol
17
GN-8620 Hardware Specifications
SE16-410-007-02
12 Handling Precaution
The section especially describes the conditions and the requests when mounting the product.
Surface mount products like this may have a crack when thermal stress is applied during surface mount
assembly after they absorb atmospheric moisture. Therefore, please observe the following precautions:
(1) This product contains semi-conductor inside. While handling this, be careful about the static electrical
charge. To avoid it, use conductive mat, ground wristband, anti-static shoes, ionizer, etc. as may be
necessary.
(2) Try to avoid mechanical shock and vibration. Try not to drop this product.
(3) When mounting this product, be aware of the location of the electrode.
(4) This product should not be washed.
(5) The reflow conditions are as shown in chapter 14. The reflow can be done twice at most.
(6) Surface mount products like this may have a crack when thermal stress is applied during surface mount
assembly after they absorb atmospheric moisture. Therefore, please observe the following precautions:
① This moisture barrier bag may be stored unopened 12 months at or below 30°C/90%RH.
② After opening the moisture bag, the packages should be assembled within 1 week in the environment
less than 30°C/60%RH.
③ If, upon opening, the moisture indicator card in the bag shows humidity above 30% or the expiration
date has passed, they may still be used with the addition of a bake of 24 hours at 125°C.
Caution: If the packing material is likely to melt at 125°C, heat-proof tray or aluminum magazine etc.
must be used for high temperature.
④ Expiration date: 12 months from the sealing date.
(7) This module includes a crystal oscillator. It may not be able to maintain the characteristic under the
vibrating condition, windy and cold conditions and noisy conditions. Please evaluate the module on ahead,
if it may be used under these conditions.
18
GN-8620 Hardware Specifications
SE16-410-007-02
13 Solder Profile
13.1 Reflow Profile
[℃]
Tc
Tp
TC-5℃
RL/P
tP
RP/L
TL
tL
TS_MAX
TS_MIN
tS
25
[t]
T25-P
Figure 13.1 Condition of Reflow (Based on IPC/JEDEC J-SED-020D)
Item
Table 13.1 Condition of Reflow (Pb-free)
Symbol
Condition
Preheat/Soak Minimum Temperature
Preheat/Soak Maximum Temperature
Preheat/Soak Time from TS-MIN to TS-MAX
Ramp-up rate TL to TP
Liquidus Temperature
Time maintained above TL
Specified classification temperature
Time within 5°C of TC
Ramp-down rate TL to TP
Time from 25°C to peak temperature
TS-MIN
TS-MAX
tS
RL/P
TL
tL
TC
150°C
200°C
60 to 120 s
3°C/s (Max)
217 to 220°C
60 to150 s
260°C
tP
30 s
RP/L
T25-P
6°C/s (Max)
8 min. (Max)
Notes
Tolerance for tp is defined as
a user maximum
Notes:
- Please reflow according to Figure 13.1 and Table 13.1.
- Recommended temperature reflow profile pattern is lead free.
- Recommended atmosphere in chamber is Nitrogen.
- Oxygen density level is less than 1500 ppm.
- Profile temperature should be measured on top of the shielding case.
- Package condition except IPC/JEDEC J-STD-020D needs pre-baking.
- If customer should change to reflow profile from what we recommend due to temperature condition inside
of reflow chamber. Please inquire us for impact on the following items.
・Soldering of module pad on customer’s board and our module
・Solder re-melting of components mounted on our module
19
GN-8620 Hardware Specifications
SE16-410-007-02
Table 13.2 shows the moisture sensitivity level and number of reflow for assembly at user side.
Table 13.2 Moisture Sensitivity Level, Number of Reflow for Assembly at User Side
Item
Condition
Moisture Sensitivity Level
Number of reflow for assembly at user side
3
2
13.2 Precaution about Partial Heating with the Way except Reflow
If the internal temperature when the product is heated partially with, for example, like a soldering iron, hot air
and light beam welder exceeds 215 degree, the internal wiring may be disconnected by thermal stress.
14 Special Instruction
14.1 Electronic Component
Components in GN-8620 module such as chip resistors, capacitors, memories and TCXO are planned to be
purchased from multiple manufacturers/vendors according to FURUNO’s procurement policy. So it is possible
that multiple components from multiple manufacturers/vendors could be used even in the same production lot.
14.2 RoHS
GN-8620 complies with RoHS directives.
15 Reference Documents
-
FURUNO 86&87Module Package Specifications (SE13-600-024)
FURUNO 86/87 Module Reliability Test (SE16-600-012) △1
FURUNO GPS/GNSS Receiver 86/87 series User’s Design Guide. (Document No. SE13-900-001)
20
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