RFDA2026Dig-
ital Controlled
Variable Gain
Amplifier
RFDA2026
DIGITAL CONTROLLED VARIABLE GAIN AMPLIFIER
1400MHz to 2700MHz, 6-BIT 0.5dB LSB CONTROL
Package Style: MCM 28-Pin, 6.0mmx6.0mm
Features
Frequency Range 1400MHz to
2700MHz
6-Bit Digital Step Attenuator
SPI Serial Control Programming
Max Gain = 32dB at 2GHz, and
29.3dB @ 2.6GHz
Gain Control Range = 31.5dB
(0.5dB Step Size)
High OIP3/P1dB =
+42.5/25dBm
Single +5V Supply
Small 28-Pin, 6.0mm x 6.0mm,
MCM
Power-up Programming
Functional Block Diagram
Product Description
RFMD's RFDA2026 is a digital controlled variable gain amplifier featuring
high linearity over the entire gain control range with a noise figure less
than 4.1dB in its maximum gain state. The gain of the 6-bit digital step
attenuator is programmed with a serial mode control interface (SPI). The
RFDA2026 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 compo-
nents required.
Applications
Cellular, 3G Infrastructure
WiBro, WiMax, LTE
Microwave Radio
High-Linearity Power Control
Ordering Information
RFDA2026SQ
RFDA2026SR
RFDA2026TR13
RFDA2026PCK-410
RFDA2026PCK-411
Sample bag with 25 pieces
7” Sample reel with 100 pieces
13” Reel with 2500 pieces
1.4GHz to 2.4GHz PCBA with 5-piece sample bag
2.4GHz to 2.7GHz PCBA with 5-piece sample bag
GaAs HBT
DS121119
Optimum Technology Matching® Applied
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs MESFET
InGaP HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
BiFET HBT
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 trade-
mark 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. ©2011, RF Micro Devices, Inc.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
1 of 15
RFDA2026
Absolute Maximum Ratings
Parameter
Supply Voltage
DC Supply Current
Power Dissipation(P
DISS
)
Maximum RF Input Power
Operating Temperature (T
CASE
)
Storage Temperature
Junction Temperature (T
J
)
ESD Rating - Human Body Model (HBM)
Moisture Sensitivity Level
MTTF>1E6 hours at 175°C junction temperature.
Rating
5.5
300
1500
12
-40 to +85
-40 to +150
175
500 (Class 1B)
MSL 3
Unit
V
DC
mA
mW
dBm
°C
°C
°C
V
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 perfor-
mance or functional operation of the device under Absolute Maximum Rating condi-
tions 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 appli-
cation circuitry and specifications at any time without prior notice.
RoHS (Restriction of Hazardous Substances): Compliant per EU Directive
2002/95/EC.
Parameter
Overall
Frequency Range
Max Gain
Min.
Specification
Typ.
Max.
Unit
Condition
Temp=25°C, V
CC
=V
DD
=5V, Standard Applica-
tion Circuit
1400
32
29.3
2700
MHz
dB
dB
dB
dB
dBm
dBm
bit
ns
dB
dB
dB
Major state error up to 2700MHz
Attenuation = 0dB
P
OUT
=+5dBm/tone, 1 MHz spacing
SPI interface
tON, tOFF (10%/90% RF)
Attenuation = 0dB
Attenuation = 0dB at 2.0GHz
Attenuation = 0dB at 2.6GHz
Gain Control Range
Step Accuracy
P1dB
Output IP3
Control Interface
Settling Time
Noise Figure
Impedance
Input Return Loss
Output Return Loss
Total Supply Current
Supply Current
Thermal Resistance
4.75
39
31.5
±(0.15 +5% attenuation setting)
25
42.0
6
250
4.1
50
-15
-11
5.0
192
46.2
5.25
V
mA
°C/W
From V
CC
_SPI, V
CC
_AMP1 and V
CC
_AMP2
Junction to backside of device
Parameter
Max Small Signal Gain
Output P1dB
Output IP3
1
Input Return Loss
Output Return Loss
Noise Figure
Unit
dB
dBm
dBm
dB
dB
dB
1500MHz 1800MHz 2000MHz 2200MHz 2400MHz 2600MHz
32.9
25.5
43.5
-16
-10.5
4.0
32.5
25.8
43.0
-15
-10.8
4.0
32.3
26.2
42.5
-15
-11.8
4.1
31.7
26.2
42.0
-19
-14
4.0
30.8
25.8
42.0
-23
-14.5
4.1
29.3
25.6
43.0
-19
-19
4.2
Note
1. OIP3 is tested at P
OUT
=+5 dBm/Tone and 1 MHz spacing
2 of 15
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
DS121119
RFDA2026
1400MHz to 2400MHz Application Circuit Data
Gain versus Frequency and Attenuation State
35
35
30
34
25
33
20
32
31
30
29
28
27
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
25°C
85°C
0
-5
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
-40°C
Gain versus Frequency and Temperature at 0dB
Attenuation State
Gain (dB)
15
10
5
0dB
1dB
4dB
16dB
0.5dB
2dB
8dB
31.5dB
Frequency (GHz)
Gain (dB)
Frequency (GHz)
Normalized Attenuation versus
Attenuation State
0
0.2
0.0
-0.2
-5
Bit Error versus Frequency and
Attenuation State
-10
Attenuation (dB)
-15
Bit Error (dB)
-0.4
-0.6
-0.8
-1.0
-1.2
-1.4
0dB
1dB
4dB
16dB
0.5dB
2dB
8dB
31.5dB
-20
0dB
1dB
4dB
16dB
0.5dB
2dB
8dB
31.5dB
-25
-30
-35
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
Frequency (GHz)
Frequency (GHz)
Input Return Loss versus Frequency and
Attenuation State
0
-5
-10
-8
-9
Output Return Loss versus Frequency and
Attenuation State
0dB
1dB
4dB
16dB
0.5dB
2dB
8dB
31.5dB
-15
-20
-25
-30
-35
-40
-45
-50
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
0dB
1dB
4dB
16dB
0.5dB
2dB
8dB
31.5dB
Output Return Loss (dB)
-10
-11
-12
-13
-14
-15
-16
1.4
1.5
1.6
1.7
1.8
1.9
2
Input Return Loss (dB)
2.1
2.2
2.3
2.4
Frequency (GHz)
Frequency (GHz)
DS121119
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
3 of 15
RFDA2026
1400MHz to 2400MHz Application Circuit Data
Output IP3 versus Frequency and Temperature
45
28.0
27.5
27.0
43
Output P1dB versus Frequency
and Temperature
44
Output IP3 (dBm)
26.5
Output P1dB (dBm)
42
26.0
25.5
25.0
24.5
24.0
23.5
85°C
25°C
-40°C
41
40
85°C
25°C
39
-40°C
38
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
23.0
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
Frequency (GHz)
Frequency (GHz)
Output IP3 versus Tone Power at 0dB
Attenuation State
49
1880MHz
2017MHz
45
4.15
Noise Figure versus Frequencyat 0dB
Attenuation State
47
4.10
Output IP3 (dBm)
43
Noise Figure (dB)
4.05
4.00
41
3.95
39
3.90
37
NF
35
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
3.85
1.4
1.6
1.8
2.0
2.2
2.4
Per Tone (dBm)
Frequency (GHz)
4 of 15
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
DS121119
RFDA2026
1400MHz to 2400MHz Application Circuit Data
Isolation Over Temperature
-43
-44
-45
-10
0
-5
Input Return Loss Over Temperature
25°C
85°C
-40°C
-46
Input Return Loss (dB)
25°C
85°C
-40°C
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
Isolation (dB)
-47
-48
-49
-50
-51
-52
-53
-15
-20
-25
-30
-35
-40
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
Frequency (GHz)
Frequency (GHz)
Output Return Loss Over Temperature
0
-2
-4
25°C
85°C
-40°C
Output Return Loss (dB)
-6
-8
-10
-12
-14
-16
-18
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
Frequency (GHz)
DS121119
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
5 of 15
