Click Here to this file: /ro3156d

Click Here to this file: /ro3156d
RFM products are now
Murata products.
RO3156D/D-1/D-2
•
•
•
•
Designed for 868.95 MHz SRD Transmitters
Very Low Series Resistance
Quartz Stability
Complies with Directive 2002/95/EC (RoHS)
Pb
The RO3156D is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount ceramic case.
It provides reliable, fundamental-mode stabilization of fixed-frequency transmitters operating at 868.95 MHz.
This SAW is designed specifically for SRD remote control and security transmitters operating under ETSI
EN 300 220 regulations.
868.95 MHz
SAW Resonator
Absolute Maximum Ratings
Rating
Value
Units
10
dBm
12
VDC
Input Power Level
DC Voltage
Storage Temperature
-40 to +85
°C
260
°C
Soldering Temperature, 10 seconds / 5 cycles maximum
SM3838-6 Case
3.8 X 3.8
Electrical Characteristics
Characteristic
Frequency, +25 °C
Sym
fC
RO3156D-1
RO3156D-2
Tolerance from 916.5 MHz
Notes
RO3156D
2, 3, 4, 5
RO3156D
Minimum
Typical
Maximum
868.750
869.150
868.800
869.100
868.850
869.050
±150
RO3156D-2
IL
Quality Factor
Unloaded Q
QU
50 Ω Loaded Q
QL
Turnover Temperature
TO
Turnover Frequency
fO
Frequency Aging
2, 5, 6
Frequency Temperature Coefficient
FTC
Absolute Value during the First Year
|fA|
dB
6300
5, 6, 7
850
10
1
5
2.5
25
40
°C
fc
MHz
0.032
ppm/°C2
ppm
10
1.0
MΩ
15.7
Ω
18.1
µH
Motional Resistance
RM
Motional Inductance
LM
Motional Capacitance
CM
1.85
fF
Transducer Static Capacitance
CO
5, 6, 9
2.2
pF
LTEST
2, 7
15.2
nH
Test Fixture Shunt Inductance
Lid Symbolization
Standard Reel Quantity
1.20
6, 7, 8
DC Insulation Resistance between Any Two Terminals
RF Equivalent RLC Model
kHz
±100
Insertion Loss
Temperature Stability
MHz
±200
ΔfC
RO3156D-1
Units
5, 6, 7, 9
RO3156D: 715, RO3156D-1: 924, RO3156D-2: 925 //YWWS
Reel Size 7 Inch
10
Reel Size 13 Inch
500 Pieces / Reel
3000 Pieces / Reel
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
1.
2.
3.
4.
5.
6.
Frequency aging is the change in fC with time and is specified at +65 °C or less.
Aging may exceed the specification for prolonged temperatures above +65 °C.
Typically, aging is greatest the first year after manufacture, decreasing in subsequent years.
The center frequency, fC, is measured at the minimum insertion loss point, ILMIN,
with the resonator in the 50 Ω test system (VSWR ≤ 1.2:1). The shunt
inductance, LTEST, is tuned for parallel resonance with CO at fC. Typically,
fOSCILLATOR or fTRANSMITTER is approximately equal to the resonator fC.
One or more of the following United States patents apply: 4,454,488 and
4,616,197.
Typically, equipment utilizing this device requires emissions testing and
government approval, which is the responsibility of the equipment manufacturer.
Unless noted otherwise, case temperature TC = +25 ± 2 °C.
The design, manufacturing process, and specifications of this device are subject
to change without notice.
©2010-2015 by Murata Electronics N.A., Inc.
RO3156D/D-1/D-2 (R) 2/5/15
7.
8.
9.
10.
Page 1 of 2
Derived mathematically from one or more of the following directly measured
parameters: fC, IL, 3 dB bandwidth, fC versus TC, and CO.
Turnover temperature, TO, is the temperature of maximum (or turnover)
frequency, fO. The nominal frequency at any case temperature, TC, may be
calculated from: f = fO [1 - FTC (TO -TC)2]. Typically oscillator TO is
approximately equal to the specified resonator TO.
This equivalent RLC model approximates resonator performance near the
resonant frequency and is provided for reference only. The capacitance CO is
the static (nonmotional) capacitance between the two terminals measured at low
frequency (10 MHz) with a capacitance meter. The measurement includes
parasitic capacitance with "NC” pads unconnected. Case parasitic capacitance
is approximately 0.05 pF. Transducer parallel capacitance can by calculated as:
CP ≈ CO - 0.05 pF.
Tape and Reel Standard Per ANSI/EIA 481.
www.murata.com
agc
Electrical Connections
Pin
The SAW resonator is bidirectional and
may be installed with either orientation.
The two terminals are interchangeable
and unnumbered. The callout NC
indicates no internal connection. The NC
pads assist with mechanical positioning
and stability. External grounding of the NC
pads is recommended to help reduce
parasitic capacitance in the circuit.
B
NC
2
Terminal
3
NC
4
NC
5
NC
6
Terminal
7
NC
8
NC
1
6
1
From 50 Ω
Network Analyzer
G
C
Parameter Test Circuit
Connection
1
5
2
4
3
To 50 Ω
Network Analyzer
Power Test Circuit
H
6
6
A 2
5
E
1
5
2
4
3
50 Ω Source
at F C
I
P INCIDENT
Low-Loss
Matching
Network to
50 Ω
P REFLECTED
1
6
2
3
5
4
4
3
D
J
Example Application Circuits
Typical Low-Power Transmitter Application
Modulation
Input
200k Ω
+9VDC
C1
47
L1
(Antenna)
1
6
2
3
5
4
C2
ROXXXXC
Bottom View
RF Bypass
470
Typical Local Oscillator Application
Output
200k Ω
+VDC
C1
+VDC
L1
Case Dimensions
A
B
C
D
E
G
H
I
J
mm
Nom
3.80
3.80
1.30
1.10
2.54
1.00
2.00
0.60
1.80
Min
3.60
3.60
1.10
0.95
2.39
0.90
1.90
0.50
1.70
Max
4.00
4.00
1.50
1.25
2.69
1.10
2.10
0.70
1.90
Min
0.142
0.142
0.043
0.037
0.094
0.035
0.748
0.020
0.067
Inches
Nom
0.150
0.150
0.050
0.043
0.100
0.040
0.079
0.024
0.071
6
Max
0.157
0.157
0.060
0.049
0.106
0.043
0.083
0.028
0.075
Lm
4
RF Bypass
The curve shown on the right accounts for resonator contribution only and
does not include LC component temperature contributions.
Co = Cp + 0.05 pF
fC = f O , T C = T O
0
0
-50
-50
-100
-100
-150
-150
-200
-80 -60 -40 -20
*Case Parasitics
-200
0 +20 +40 +60 +80
ΔT = TC - T O ( °C )
Cm
©2010-2015 by Murata Electronics N.A., Inc.
RO3156D/D-1/D-2 (R) 2/5/15
5
Temperature Characteristics
0.05 pF*
Rm
3
C2
Equivalent RLC Model
Cp
2
ROXXXXC
Bottom View
(f-fo ) / fo (ppm)
Dimension
1
Page 2 of 2
www.murata.com
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement