RFDA0056
RFDA0056
RFDA0056Digital Controlled
Variable Gain
Amplifier
300MHz to
1100MHz, 6Bit 0.5dB LSB
Control
Digital Controlled Variable Gain Amplifier 300MHz
to 1100MHz, 6-Bit 0.5dB LSB Control

GND
7

Cellular, 3G Infrastructure

WiBro, WiMax, LTE

Microwave Radio

High Linearity Power Control
NC
22
23 GND
24 GND
DSA
17 GND
16
RF_OUT
15 GND
VCC_AMP2 14
6
GND 13
RF_IN
18 GND
AMP2
GND 12
5
19 GND
Ze
GND 11
GND
Single +5V Supply
Applications
25 GND
4
High OIP3/P1dB = +44/25dBm
Typical at 450MHz
Power-up Programming
26 GND
PUP
Gain Control Range = 31.5dB
(0.5dB Step Size)
Small 28-Pin, 6.0mm x 6.0mm,
MCM
GND
3
SPI_ CONTROL
SPI_CLK
GND 10
SPI Serial Control Programming

20 GND
AMP1


2
9
6-Bit Digital Step Attenuator

SPI_DATA
Full Internal Matching and No
External Bias Inductors


21 GND
GND

Frequency Range 300MHz to
1100MHz
1
8

SPI_LE
VCC_AMP1
Features
27
28 VCC_SPI
Package: MCM 28-Pin, 6.0mm x 6.0mm
Functional Block Diagram
Product Description
RFMD's RFDA0056 is a digital controlled variable gain amplifier featuring high linearity over the entire gain control range. The gain of the 6-bit digital step attenuator
is programmed with a serial mode control interface (SPI). The RFDA0056 is packaged in a small 6.0mm x 6.0mm leadless laminate MCM, which contains plated
through thermal vias for ultra-low thermal resistance. This module is easy to use
with no external matching components required.
Ordering Information
RFDA0056SQ
RFDA0056SR
RFDA0056R7
RFDA0056R13
RFDA0056PCK-410
GaAs HBT
GaAs MESFET
InGaP HBT

Sample bag with 25 pieces
7” Reel with 100 pieces
7” Reel with 750 pieces
13” Reel with 2500 pieces
300MHz to 1100MHz PCBA with 5-piece sample bag
Optimum Technology Matching® Applied
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
BiFET HBT
SOI
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2012, RF Micro Devices, Inc.
DS120926
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
1 of 10
RFDA0056
Absolute Maximum Ratings
Parameter
Rating
Unit
Supply Voltage
5.5
V
DC Supply Current
330
mA
Power Dissipation
1600
mW
12
dBm
Operating Temperature (TCASE)
-40 to +85
°C
Storage Temperature
-40 to +150
°C
+172
°C
500 (Class 1B)
V
Max RF Input Power for 50
Output Load
Junction Temperature
ESD Rating (HBM)
Moisture Sensitivity Level
Caution! ESD sensitive device.
Exceeding any one or a combination of the Absolute Maximum Rating conditions may
cause permanent damage to the device. Extended application of Absolute Maximum
Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Absolute Maximum Rating conditions is not implied.
The information in this publication is believed to be accurate and reliable. However, no
responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any
infringement of patents, or other rights of third parties, resulting from its use. No
license is granted by implication or otherwise under any patent or patent rights of
RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice.
RFMD Green: RoHS compliant per EU Directive 2002/95/EC, halogen free
per IEC 61249-2-21, < 1000ppm each of antimony trioxide in polymeric
materials and red phosphorus as a flame retardant, and <2% antimony in
solder.
MSL 3
Nominal Operating Parameters
Parameter
Min.
Specification
Typ.
Max.
Unit
Condition
Temp = 25°C, VCC= VDD = 5V, standard application circuit
Overall
Frequency Range
300
1100
Max Gain
MHz
36
dB
31.5
dB
±(0.15 +5% attenuation setting)
dB
P1dB
25
dBm
Attenuation = 0dB, at 450MHz
Output IP3
44
dBm
POUT = 5dBm/Tone, 1MHz spacing at 450MHz
6
bit
Settling Time
250
ns
tON, tOFF (10%/90% RF)
Noise Figure
4.2
dB
Attenuation = 0dB
Impedance
50

Input Return Loss
18
dB
14.9
dB
Gain Control Range
Step Accuracy
Control Interface
Output Return Loss
Total Supply Voltage
4.75
5.0
5.25
V
Supply Current
207
215
245
mA
Thermal Resistance
73
Attenuation = 0dB, at 450MHz
Major state error up to 1100MHz
SPI Interface
At 450MHz
From VCC (SPI), VCC (AMP1), and VCC (AMP2)
°C/W
Typical RF Performance at Key Operating Frequencies
Parameter
Unit
350MHz
450MHz
550MHz
700MHz
850MHz
900MHz
950MHz
1050MHz
dB
37.1
36.8
36.3
35.2
34.1
33.7
33.3
32.6
Output P1dB
dBm
25.1
25
24.3
24.5
24.3
24.4
24.5
24.4
Output IP3*
dBm
44.2
44.1
41.4
41.3
41.6
41.6
41.9
42
Input Return
Loss
dB
22.3
18
16
14.9
16
17.1
17.9
18.3
Output Return
Loss
dB
9.8
14.4
27
17.8
14.2
14.3
15
17.2
Max Small
Signal Gain
*Note: OIP3 is tested at POUT = 5dBm/Tone and 1MHz spacing
2 of 10
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
DS120926
RFDA0056
Typical Performance - 300MHz to 1100MHz Broadband Application Circuit
Gain versus Frequency
Max Gain versus Frequency
40
40
25Ԩ
35
38
85Ԩ
30
-40Ԩ
36
Gain (dB)
Gain (dB)
25
20
0dB
1dB
4dB
16dB
15
10
0.5dB
2dB
8dB
31.5dB
34
32
5
30
0
-5
28
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
0.3
0.4
0.5
0.6
Frequency (GHz)
Input Return Loss versus Frequency
0.8
0.9
1.0
1.1
1.2
Input Return Loss versus Frequency
0
0
-5
0dB
0.5dB
1dB
2dB
4dB
8dB
16dB
31.5dB
25Ԩ
85Ԩ
-5
Input Return Loss (dB)
-10
Input Return Loss (dB)
0.7
Frequency (GHz)
-15
-20
-25
-30
-35
-40Ԩ
-10
-15
-20
-40
-45
-50
-25
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
0.3
0.4
0.5
0.6
Frequency (GHz)
-5
-5
-10
-15
-20
-25
-35
0.8
0.9
1.0
1.1
1.2
Output Return Loss versus Frequency
0
Output Return Loss (dB)
Output Return Loss (dB)
Output Return Loss versus Frequency
0
-30
0.7
Frequency (GHz)
0dB
0.5dB
1dB
2dB
4dB
8dB
16dB
31.5dB
-10
-15
-20
-25
25Ԩ
-30
85Ԩ
-35
-40Ԩ
-40
-40
0.3
0.4
0.5
0.6
0.7
0.8
Frequency (GHz)
DS120926
0.9
1.0
1.1
1.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
Frequency (GHz)
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
3 of 10
RFDA0056
Typical Performance - 300MHz to 1100MHz Broadband Application Circuit
Normalized Phase Error versus Frequency
Bit Error versus Frequency
45
0.6
40
0.5dB
1dB
2dB
4dB
8dB
16dB
31.5dB
0.4
0dB
0.5dB
1dB
2dB
4dB
8dB
16dB
31.5dB
0.2
30
Bit Errror (dB)
Phase Error (dB)
35
0dB
25
20
15
0
-0.2
-0.4
10
-0.6
5
0
-0.8
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
0.3
0.4
0.5
0.6
Frequency (GHz)
0.7
0.8
0.9
1.0
1.1
1.2
Frequency (GHz)
Normalized Attenuation
P-1 versus Frequency
25.5
0
-5
25
P-1 (dB)
Attenuation (dB)
-10
-15
-20
-25
0dB
0.5dB
1dB
2dB
4dB
8dB
16dB
31.5dB
24.5
24
25Ԩ
85Ԩ
23.5
-30
-40Ԩ
-35
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
23
0.35
1.2
0.50
0.65
Frequency (GHz)
0.80
1.10
0.95
Frequency (GHz)
Output IP3 versus Frequency
Noise Figure versus Frequency
Per Tone +5dBm
48
4.6
4.5
46
4.4
Noise Figure (dB)
Output IP3 (dB)
44
42
40
25Ԩ
38
34
0.35
-40Ԩ
0.50
0.65
0.80
Frequency (GHz)
4 of 10
0.95
4.2
4.1
4
3.9
3.8
85Ԩ
36
4.3
1.10
3.7
25Ԩ
3.6
85Ԩ
3.5
0.35
0.45
0.55
0.65
0.75
0.85
0.95
1.05
Frequency (GHz)
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
DS120926
RFDA0056
Truth Table
Control Bit
D5
D4
D3
D2
D1
D0
Gain Relative to Max Gain
1
1
1
1
1
1
0dB
1
1
1
1
1
0
-0.5dB
1
1
1
1
0
1
-1dB
1
1
1
0
1
1
-2dB
1
1
0
1
1
1
-4dB
1
0
1
1
1
1
-8dB
0
1
1
1
1
1
-16dB
0
0
0
0
0
0
-31.5dB
Serial Port Interface:
SPI Timing Diagram
t6
t1
t2
t4
t3
t8
t5
CLK
DATA
t7
LE
t9
DOUT
t10
SPI Timing Diagram Specifications
Parameter
DS120926
Limit
Unit
Comment
t1
25
MHz max
CLK Frequency
t2
20
ns min
CLK High
t3
20
ns min
CLK Low
t4
5
ns min
DATA to CLK Setup Time
DATA to CLK Hold Time
t5
5
ns min
t6
30
ns min
DATA Valid
t7
5
ns min
LE to CLK Setup Time
t8
5
ns min
CLK to LE Setup Time
t9
10
ns min
LE Pulse Width
t10
20
ns max
Output Set
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
5 of 10
RFDA0056
Programming Example - 6-Bit
CLK
DATA
MSB
D5
D4
D3
D2
D1
LSB
D0
LE
Control Voltage Table
6 of 10
Power-up Programming Truth Table
State
Logic
PUP
Attenuator Setting
Low
0V to 0.8V
Low
Attenuation at Max, 31.5dB
High
2.0V to 5.0V
High
Attenuation at Min, 0dB
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
DS120926
RFDA0056
Pin Names and Description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
DS120926
Function
SPI_LE
SPI_DATA
SPI_CLK
PUP
GND
RF_IN
GND
VCC_AMP1
GND
GND
GND
GND
GND
VCC_AMP2
GND
RF_OUT
GND
GND
GND
GND
GND
NC
GND
GND
GND
GND
GND
VCC_SPI
Description
Serial Latch Enable Input
Serial Data Input
Serial Clock Input
Power-up Programming Pin
RF/DC Ground Connection
RF Input
RF/DC Ground Connection
Supply Voltage for Amplifier 1
RF/DC Ground Connection
RF/DC Ground Connection
RF/DC Ground Connection
RF/DC Ground Connection
RF/DC Ground Connection
Supply Voltage for Amplifier 2
RF/DC Ground Connection
RF Output
RF/DC Ground Connection
RF/DC Ground Connection
RF/DC Ground Connection
RF/DC Ground Connection
RF/DC Ground Connection
Do Not Connect, Leave Open Circuit
RF/DC Ground Connection
RF/DC Ground Connection
RF/DC Ground Connection
RF/DC Ground Connection
RF/DC Ground Connection
Supply Voltage for SPI and DSA Chip
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
7 of 10
RFDA0056
Package Drawing:
6.0mm x 6.0mm Laminate Module
Evaluation Board Assembly Drawing
8 of 10
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
DS120926
RFDA0056
Evaluation Board Schematic
300MHz to 1100MHz Application Circuit
VCC
PUP
R5
0 ohm
R6
1
DNP
CLK
2
DATA
C9
LE
+
11
R4
R2
1K
1
2
3
1000 ohm
4
DNP
C7
1
6
7
330pF
2
J1
5
23
22
24
25
SPI_LE
GND
SPI_DATA
GND
SPI_CLK
GND
PUP
GND
GND
GND
RFIN
RFOUT
GND
GND
VCC
CLK
LE
R1
0 ohm
+
C4
C5
DNP
DNP
C6
0.1uF
RTS#
CB1
VIO
VCC
RXD
RST
RI#
3V3
GND
CB3
DSR#
PU1
DCD#
PU2
CTS#
VCC
CB4
USB
CB2
SLD
24
23
22
21
20
19
18
17
16
15
14
13
21
20
19
18
17
C8
16
L1
15
DNP
J2
1
330pF
RFOUT
VAMP2
R3
14
GND
29
GND
13
GND
12
GND
11
GND
GND
10
VCC
9
VAMP1
DATA
1
2
3
4
5
6
8
P1
CB0
UM232R
RFIN
PUP
GND
DTR#
NC
GND
GND
GND
26
GND
27
GND
28
LE
TXD
2
VCC
12
DSA_VCC
C12
DNP
7
5
3
1
6
9
0.1uF
PUP
5
10
C11
RN1
4
8
C10
DNP
8
6
4
2
3
7
DNP
DATA
CLK
P2
C1
C2
0.1uF
DNP
+
VCC
0 ohm
C3
DNP
HDR_1X6
Evaluation Board Bill of Materials (BOM)
300MHz to 1100MHz Application Circuit
Description
RFDA0056, 6 x 6sq.mm, 28-Pin Laminate
Reference Designator
Manufacturer
U1
RFMD
RFDA0056
Viasystems
RFDA2026-411(B)
RFDA2026-411(B)
CONN, SMA, END LNCH, FLT, 0.062"
Manufacturer's P/N
J1-J2
Emerson Network Power
142-0701-821
CAP, 0.1µF, 10%, 10V, X7R, 0402
C1, C6, C11
Murata Electronics
GRM155R71C104KA88D
CAP, 330pF, 10%, 50V, X7R, 0402
C7-C8
Murata Electronics
GRM155R71H331KA01E
R2
Panasonic Industrial Co.
ERJ-3GEYJ102
RES, 1K, 5%, 1/16W, 0603
RES ARRAY, 4-ELEM, 1K, 5%, SMD 4 X 00402
RN1
KOA
CN1E4KTTD102J
CONN, HDR, ST, PLRZD, 6-PIN, 0.100"
P1
ITW Pancon
MPSS100-6-C
CONN, SKT, 24-PIN DIP, .600", T/H
P2
Aries Electronics Inc.
24-6518-10
R1, R3, R5
Kamaya, Inc
RMC1/16JPTP
C2-C5, C9-C10, R4, L1
N/A
N/A
RES, 0Ω, 0603
DNP
DS120926
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
9 of 10
RFDA0056
Branding Diagram
DA 0056
Trace Code
Pin 1 Indicator
Trace Code to be assigned by SubCon
10 of 10
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
DS120926
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