RFDA2025
RFDA2025
RFDA2025Digital Controlled
Variable Gain
Amplifier
DIGITAL CONTROLLED VARIABLE GAIN
AMPLIFIER
LE
DATA
CLK
GND
AMPOUT
GND
NC
31.5dB Attenuation Range
(0.5dB Step)
NC
5
20
NC
NC
6
19
NC
High OIP3/P1dB=+43/25dBm
NC
7
18
NC
Gain=-20dB to +11.5dB at
2017MHz
NC
8
17
Vdd
Footprint Compatible with 32-Pin
5mmx5mm QFN
12
13
14
15
16
NC
11
NC
Robust 1000V HBM ESD
10
PUP

9
NC
Single +5V Supply
DSA
GND
ATTOUT
Serial Control Interface


GND
NC
21
ATTIN

25
22
NC

26
6-bit SPI
GND

27
4
AMP

28
3
6-Bit Digital Step Attenuator
GND
29
NC

2
30
NC
500MHz to 2500MHz Operation
GND
31
23

1
32
24
Features
AMPIN
GND
Package: MCM, 32-Pin, 5.2mmx5.2mm
E-pad
GND
Functional Block Diagram
Product Description
Applications

Cellular, PCS, 3G Infrastructure

WiBro, WiMax, LTE

High Linearity Power Control
RFMD’s RFDA2025 is a digital controlled variable gain amplifier featuring
high linearity over the entire gain control range. The 6-bit digital step
attenuator is programmed with a serial mode control interface. The
RFDA2025 is packaged in a small 5.2mmx5.2mm leadless laminate
MCM with plated through thermal vias for ultra low thermal resistance.
The footprint for this module is directly compatible with most 32-pin
5mmx5mm QFNs. The output amplifier is externally matched, allowing for
optimum performance over specific bands within 500MHz to 2500MHz.
Ordering Information
RFDA2025SQ
RFDA2025SR
RFDA2025TR7
RFDA2025TR13
RFDA2025PCK-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
1800 MHz to 2200 MHz PCBA with 5-piece sample bag
Optimum Technology Matching® Applied
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
RF MEMS
LDMOS
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. ©2006, RF Micro Devices, Inc.
DS101117
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
1 of 11
RFDA2025
Absolute Maximum Ratings
Parameter
Rating
Unit
Supply Voltage (VCC, VDD)
5.5
V
Collector Current (IC)
200
mA
Power Dissipation (PDISS)
750
mW
RF Input Power
20
dBm
-40 to +85
°C
150
°C
-40 to +150
°C
1
Operating Temperature (TCASE)
Junction Temperature (TJ)
Storage Temperature
ESD Rating (HBM)
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.
RoHS status based on EUDirective2002/95/EC (at time of this document revision).
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.
Class 1C
Moisture Sensitivity Level
MSL 3
Notes:
1. PDISS =VCC *IC -RF Output Power+RF Input Power
Parameter
Min.
Frequency Range
500
Gain (Max Gain State)
10.0
Max.
2500
Gain Control Range
Step Accuracy
Specification
Typ.
11.5
13.0
31.5
±(0.1 +5% attenuation setting)
Unit
Condition
MHz
dB
Attenuation=0dB, 2017MHz
dB
0.5dB LSB, 6 bits
dB
Major state max error
2017MHz, POUT =5dBm/tone, 1MHz spacing
Output IP3
40
43
dBm
Output P1dB
23
25
dBm
Input Return Loss
17
dB
Output Return Loss
11
dB
2017MHz
Noise Figure
7
dB
2017MHz, Attenuation=0dB
ns
10/90% RF
tRISE, tFALL
250
Amplifier Supply Voltage (VCC)
4.75
5.00
5.25
Attenuator Supply Voltage (VDD)
3.30
5.00
5.25
V
90
115
135
mA
Total Supply Current
Thermal Resistance
87
Control Interface
6 Bit, Serial
Control Voltages
Low, VCTL =0 to 0.8 VDC
High, VCTL =2.0 to VDD VDC
Attenuation=0dB, 2017MHz
2017MHz
V
Sum of currents from VDD and VCC
°C/W
V
Notes:
1. All measurements based on the 1800MHz to 2200MHz Application Circuit, T=25°C
2. VCC =VDD =+5V, VCTL =0/5V
2 of 11
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
DS101117
RFDA2025
Typical Performance - 1.8GHz to 2.2GHz Application Circuit Performance
Gain, Major States, 25°C
S21 over Temperature, Max Gain
15
20
10
10
+25C
-40C
+85C
0
5
-10
0
Gain (dB)
-20
-5
Gain (dB)
-30
-40
-10
0dB
1dB
4dB
16dB
-15
0.5dB
2dB
8dB
31.5dB
-50
-60
-20
-70
-25
-80
1.8
1.9
2.0
2.1
2.2
0
1
2
Frequency (GHz)
Input RL, Major States, 25°C
0
0dB
1dB
4dB
16dB
-5
6
-5
-10
IRL (dB)
-15
-15
-20
-20
-25
-25
+25C
-40C
+85C
-30
1.8
1.9
2.0
2.1
2.2
0
1
2
3
4
5
6
Frequency (GHz)
Frequency (GHz)
Output RL, Major States, 25°C
Output Return Loss over Temperature, Max Gain
0
0
-5
-5
-10
-10
ORL (dB)
-15
-20
-15
-20
0dB
1dB
4dB
16dB
-25
0.5dB
2dB
8dB
31.5dB
+25C
-40C
-25
+85C
-30
-30
1.8
1.9
2.0
Frequency (GHz)
DS101117
5
0
0.5dB
2dB
8dB
31.5dB
-30
ORL(dB)
4
Input Return Loss over Temperature, Max Gain
-10
IRL(dB)
3
Freq(GHz)
2.1
2.2
0
1
2
3
4
5
6
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 11
RFDA2025
Typical Performance - 1.8GHz to 2.2GHz Application Circuit Performance
Isolation, Major States, 25°C
Isolation over Temperature, Max Gain
0
0
-10
-10
-20
-20
-30
Isolation
(dB)
+25C
-40C
+85C
-30
Isolation
(dB)
-40
-50
-40
-50
-60
-60
0dB
1dB
4dB
16dB
-70
0.5dB
2dB
8dB
31.5dB
-70
-80
-80
1.8
1.9
2.0
2.1
2.2
0
1
2
Frequency (GHz)
Attenuation Error, Major States, 25°C
Error (dB)
3
3
2
2
1
1
Error (dB)
0
5
6
0
-1
0.5dB
2dB
8dB
31.5dB
-2
1dB
4dB
16dB
0.5dB
2dB
8dB
31.5dB
-2
-3
1dB
4dB
16dB
-3
1.8
1.9
2.0
2.1
2.2
1.8
1.9
2.0
2.1
2.2
Frequency (GHz)
Frequency (GHz)
Attenuation Error, Major States, -40°C
Normalized Phase Error, Major States, 25°C
3
45
2
30
1
15
Phase (°)
0
-1
0
-15
0.5dB
2dB
8dB
31.5dB
-2
1dB
4dB
16dB
0.5dB
2dB
8dB
31.5dB
-30
-3
1dB
4dB
16dB
-45
1.8
1.9
2.0
Frequency (GHz)
4 of 11
4
Attenuation Error, Major States, 85°C
-1
Error (dB)
3
Frequency (GHz)
2.1
2.2
1.8
1.9
2.0
2.1
2.2
Frequency (GHz)
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
DS101117
RFDA2025
Typical Performance: 1.8GHz to 2.2GHz Application Circuit Performance
Worst Case Successive Step Error, 25°C
Successive Step Error at 2020MHz
1.00
1.0
0.75
0.8
0.50
0.5
0.3
0.25
Error
(dB)
Error
(dB)
0.00
0.0
-0.3
-0.25
-0.5
-0.50
+25C
-40C
+85C
-0.75
-0.8
-1.0
-1.00
0
4
8
12
16
20
24
28
1.8
32
1.9
2.0
2.1
2.2
Frequency (GHz)
State
OIP3 over Temperature, Max Gain
OIP3, Major States, 25°C
48
48
46
46
44
44
OIP3
(dBm)
OIP3 (dBm)
42
42
40
0dB
1dB
4dB
16dB
40
+25C
-40C
+85C
38
0.5dB
2dB
8dB
38
1.8
1.9
2.0
2.1
2.2
1.8
1.9
2.0
2.1
2.2
Frequency (GHz)
Frequency (GHz)
P1dB over Temperature, Max Gain
ACPR over Temperature, Max Gain
WCDMA, 64 DPCH, 2017MHz
27
-40
-45
26
-50
-55
25
ACPR
(dBc)
P1dB
(dBm)
24
-65
-70
23
+25C
-40C
+85C
+25C
-40C
+85C
-75
22
-80
1.8
1.9
2.0
Frequency (GHz)
DS101117
-60
2.1
2.2
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
Output Channel Power (dBm)
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
5 of 11
RFDA2025
Typical Performance - 1.8GHz to 2.2GHz Application Circuit Performance
Noise Figure over Temperature, Max Gain
DCIV over Temperature, Max Gain
10.0
150
9.5
140
9.0
130
8.5
120
8.0
Noise
Figure
(dB)
7.5
ICC (mA)
7.0
110
100
6.5
90
6.0
5.5
+25C
-40C
+85C
80
+25C
+85C
5.0
70
1.8
1.9
2.0
2.1
2.2
4.5
Frequency (GHz)
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.4
5.5
VCC (V)
Truth Table
DSA Control Bits
Relative Gain Setting
D5
16dB
D4
8dB
D3
4dB
D2
2dB
D1
1dB
D0
0.5dB
1
1
1
1
1
1
Max Gain
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
6 of 11
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
DS101117
RFDA2025
Serial Port Interface: SPI Timing Diagram
t6
t1
t2
t3
t4
t8
t5
CLK
DATA
t7
LE
t9
DOUT
t10
Programming example – 6 bit
CLK
DATA
MSB
D5
D4
D3
D2
D1
LSB
D0
LE
Specifications: SPI Timing Diagram
Limit
Unit
Parameter
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
t5
5
ns min
DATA to CLK Hold Time
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
Control Voltage Table
Power Up Programming Truth Table
State
VDD =+3V
VDD=+5V
PUP
Attenuator Setting
Low
0V to 0.8V
0V to 0.8V
Low
Attenuation at Max, 31.5dB
High
2.0 to VDD
2.0 to VDD
High
Attenuation at Min, 0dB
DS101117
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
7 of 11
RFDA2025
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Function
AMPIN
GND
GND
ATTOUT
NC
NC
NC
NC
NC
NC
GND
ATTIN
GND
NC
PUP
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
NC
VDD
NC
NC
NC
NC
NC
NC
NC
CLK
DATA
LE
GND
AMPOUT/VCC
GND
GND
GND
8 of 11
Description
Amplifier Input - DC Block Required.
RF/DC Ground Connection.
RF/DC Ground Connection.
Digital Attenuator Output - DC Block Required.
No internal connection.
No internal connection.
No internal connection.
No internal connection.
No internal connection.
No internal connection.
RF/DC Ground Connection.
Digital Attenuator Input - DC Block Required.
RF/DC Ground Connection.
No internal connection.
Power-up programming pin. Low=Max attenuation at power-up (-31.5dB). High=Min attenuation at powerup (0dB).
No internal connection.
Digital Attenuator Supply Voltage.
No internal connection.
No internal connection.
No internal connection.
No internal connection.
No internal connection.
No internal connection.
No internal connection.
Serial Clock.
Serial Data.
Latch Enable.
RF/DC Ground Connection.
Amplifier Output and Bias. External Choke, Bypassing and DC Blocks Required.
RF/DC Ground Connection.
RF/DC Ground Connection.
RF/DC Ground Connection.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
DS101117
RFDA2025
Evaluation Schematic - 1800MHz to 2200MHz Application Circuit
C12
VCC
C10
GND
AMPIN
GND
C2
1
2
3
4
5
ATTOUT
NC
6
32
31
30
29
28
27
26
15
25
16
NC
C3
GND
L1
GND
50 Ω μ strip
AMPOUT
GND
C9
J2
RF OUT
C8
LE
DATA
CLK
23
24
NC
NC
NC
NC
CLK
22
NC
NC
21
NC
20
19
Vdd
18
17
RN3
C4
LE
6-bit SPI
14
R1
E-pad
GND
GND
DATA
DSA
13
NC
PUP
C1
AMP
12
GND
PUP
NC
11
ATTIN
C7
7
10
J1
RF IN
NC
9
50 Ω μ strip
8
NC
GND
NC
NC
C13
C5
C6
VDD
Bill of Materials - 1800MHz to 2200MHz Application Circuit
Description
Reference
Designator
Manufacturer
RFDA2025SB
U1
RFMD
RFDA2015, PCB
Manufacturer’s P/N
RFDA2025
RFDA2015410 (A)
CONN, SMA, END LNCH, FLT, 0.062”
J1, J2
Emerson Network Power
142-0701-821
CAP, 1000pF, 10%, 50V, X7R, 0603
C2, C5
Murata Electronics
GRM188R71H102KA01D
CAP, 22pF, 5%, 50V, C0G, 0402
C3, C7, C8
PANASONIC INDUSTRIAL CO
ECJ-0EC1H220J
CAP, 1uF, 10%, 16V, X7R, 0805
C1, C6
Murata Electronics
GRM21BR71C105KA01K
CAP, 100pF, 5%, 50V, C0G, 0402
C4
PANASONIC INDUSTRIAL CO
ECJ-0EC1H101J
CAP, 1.2pF, +/-0.1pF, 50V, C0G, 0402
C9
Murata Electronics
GRM1555C1H1R2BZ01E
IND, 18nH, 5%, M/L, 0603
L1
Toko America, Inc.
LL1608-FSL18NJ
RES, 0 OHM, 0402
C10
Kamaya, Inc
RMC1/16SJPTH
RES, 1K, 5%, 1/16W, 0402
R1
Kamaya, Inc
RMC1/16S-102JTH
RES ARRAY, 4-ELEM, 1K, 5%, SMD 4 X 0402
RN3
KOA
CN1E4KTTD102J
CAP, 3.3pF, +/-0.1pF, 50V, C0G, 0402
C13
Murata Electronics
GRM1555C1H3R3BZ01E
CONN, HDR, ST, PLRZD, 2-PIN, 0.100”
P2
ITW Pancon
MPSS100-2-C
CONN, HDR, ST, PLRZD, 14-PIN, 0.100”
P1
ITW Pancon
MPSS100-14-C
DNP
C11, C12, RN1, RN2
DS101117
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
9 of 11
RFDA2025
Evaluation PCB - 1800MHz to 2200MHz Application Circuit
10 of 11
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
DS101117
RFDA2025
Package Drawing
5.2mmx5.2mm Laminate Module
DA2025
YYWW
Trace Code
Pin 1 Indicator
YY = Year
WW = Week
Trace Code to be assigned by SubCon
DS101117
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
11 of 11
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