RFSA2113
®
Wide Bandwidth Voltage Controlled Attenuator
Product Description
The RFSA2113 is a fully monolithic analog voltage
controlled attenuator (VCA) featuring exceptional linearity
over a typical temperature compensated 30 dB gain control
range. The RFSA2113 features a wide bandwidth up to
18 GHz. This VCA incorporates a revolutionary new circuit
architecture to solve a long standing industry problem: high
IP3, high attenuation range, low DC current, broad
bandwidth and temperature compensated linear in dB
control voltage characteristic.
The RFSA2113 attenuation level is set by a single positive
control voltage with on chip DC conditioning circuitry. The
slope polarity of the control voltage versus gain is
selectable. The RFSA2113 draws a very low 2 mA current.
This attenuator is matched to 50 Ω over its rated control
range and frequency with no external matching
components required.
SLOPE
GND
V
DD
VC
16 Pin, 3.2 mm x 3.2 mm x 1.175 mm SMT Package
Product Features
Patented Circuit Architecture
Broadband 50 MHz to 18,000 MHz Frequency Range
30 dB Attenuation Range
+45 dBm IIP3 Typical
+75 dBm IIP2 Typical
High 1 dB Compression Point +29 dBm
Low Supply Current 2 mA Typical
+3 to +5 V Power Supply
16
15
14
13
EN
GND
RFIN
GND
1
2
3
4
CONTROL
BLOCK
12
11
10
GND
GND
RFOUT
GND
Linear in dB Control Characteristic
Internal Temperature Compensation
Class 1C HBM ESD (≥1000 V)
ATTEN.
9
5
6
7
8
GND
GND
GND
GND
Applications
Point to Point Radio
Test Instrumentation
Microwave Radio
High Linearity Power Control
Functional Block Diagram
Typical VCA’s in this performance range are based on
compound semiconductor GaAs FET MMICs that require 1
to 2 negative voltages for control. This game changing
product incorporates the complete solution in a small
3.2 mm x 3.2 mm multi-chip laminate module that reduces
the footprint in area and simplifies the control aspects over
conventional
compound
semiconductor
attenuator
approaches.
Ordering Information
Part No.
RFSA2113SQ
RFSA2113SR
RFSA2113TR13
RFSA2113PCK-410
Description
Sample bag with 25 pieces
7” Reel with 100 pieces
13” Reel with 2500 pieces
50 MHz to 18,000 MHz PCBA with 5-piece sample bag
Data Sheet, September 2, 2016 | Subject to change without notice
1 of 19
www.qorvo.com
RFSA2113
®
Wide Bandwidth Voltage Controlled Attenuator
Absolute Maximum Ratings
Parameter
Device Voltage (V
DD
)
SLOPE, VC, EN Pins
RF Input Power
(1)
Storage Temperature
Junction Temperature ( Tj)
Range / Value
−0.5 to +6
−0.5 to +6
+23
−55 to +150
+125
Units
V
V
dBm
°C
°C
Exceeding these absolute maximum ratings
during operation of this device may cause
permanent damage.
Notes:
1. Peak power of +29 dBm allowable when RMS power does not exceed +23 dBm.
Recommended Operating Conditions
Parameter
Device Voltage (V
DD
)
T
CASE
Min
+3.0
−40
Typ
+5.0
Max
+5.5
+85
Units
V
°C
Electrical specifications are measured under
bias, signal and temperature conditions as
specified. Specifications are not guaranteed
over all recommended operating conditions.
Electrical Specifications
Parameter
Operational Frequency Range
Minimum Insertion Loss
1 GHz
10 GHz
18 GHz
1 GHz
10 GHz
18 GHz
Peak to peak gain variation over temperature for fixed
control voltage
Insertion phase at 15 dB attenuation relative to
minimum insertion loss
Peak power of +29 dBm allowable when RMS power
does not exceed +23 dBm. *Not Production Tested
P
IN
+ (IM3
dBC
/ 2)
P
IN
+ IM2
dBC
, IM2 is F1+F2
P
IN
+ H2
dBC
, H2 is second harmonic
P
IN
+ (H3
dBC
/ 2), H3 is third harmonic
Junction to case
+2.5 V control voltage is lowest insertion loss, SLOPE
pin logic high
0 V control voltage is lowest insertion loss, SLOPE pin
logic low
VC pin set to +2.5 V
Conditions
(1)
Min
50
Typ
2
3
4.5
34
32
28
1
15
14
Max
18000
2.8
4.5
Units
MHz
dB
Gain Control Range
32
30
dB
Gain vs. Temperature
Return Loss
Relative Phase
Input1dB Compression Point
Input IP3
Input IP2
Input IH2
Input IH3
Device Current, I
DD
Thermal Resistance, θjc
Voltage Control Range, Positive
Attenuation Slope
Voltage Control Range, Negative
Attenuation Slope
Voltage Control Pin Current
SLOPE and EN Pins Logic Low
SLOPE and EN Pins Logic High
Settling Time
dB
dB
°Degrees
dBm
dBm
dBm
dBm
dBm
mA
°C/W
V
V
µA
V
V
µsec
+22
+38
+29
+45
+75
+80
+50
2
3.5
175
+2.5
+2.5
0
0
1.2
+0.4
+1
1 dB atten. change settling within 0.1 dB of final value.
2
Notes:
1. Test conditions unless otherwise noted: V
DD
=+5 V, Temp.=+25 °C, 50 Ω system, Freq.=10 GHz.
Data Sheet, September 2, 2016 | Subject to change without notice
2 of 19
www.qorvo.com
RFSA2113
®
Wide Bandwidth Voltage Controlled Attenuator
Measured Positive Attenuation Slope Performance
Test conditions unless otherwise noted:
V
DD
=+3 V, Temp=+25 °C, PCB and connector losses de-embedded.
0
-5
-10
Attenuation vs. Voltage Control
Freq.=10 GHz
V
DD
=+3 V
0
-5
-10
Attenuation vs. Frequency
Attenuation (dB)
-15
-20
+85 °C
Attenuation (dB)
-15
-20
-25
-30
-35
-40
VC=0 V
VC=+1.1 V
VC=+1.7 V
VC=+0.8 V
VC=+1.4 V
VC=+2.5 V
-25
-30
-35
-40
-45
+25 °C
−40 °C
-45
-50
V
DD
=+3 V
Temp.=+25 °C
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
0
2
4
6
8
10
12
14
16
18
20
Voltage Control (V)
Frequency (GHz)
Measured Positive Attenuation Slope Performance
Test conditions unless otherwise noted:
V
DD
=+3 V, Temp=+25 °C, includes PCB and connector losses.
0
Input Return Loss vs. Frequency
V
DD
=+3 V
Temp.=+25 °C
VC=0 V
VC=+1.4 V
VC=+0.8 V
VC=+1.7 V
VC=+1.1 V
VC=+2.5 V
0
Output Return Loss vs. Frequency
V
DD
=+3 V
Temp.=+25 °C
VC=0 V
VC=+1.4 V
VC=+0.8 V
VC=+1.7 V
VC=+1.1 V
VC=+2.5 V
-5
-5
-10
-10
-15
|S22| (dB)
0
2
4
6
8
10
12
14
16
18
20
|S11| (dB)
-15
-20
-20
-25
-25
-30
-30
0
2
4
6
8
10
12
14
16
18
20
Frequency (GHz)
Frequency (GHz)
0
-5
-10
Input Return Loss vs. Voltage Control
Freq.=10 GHz
V
DD
= +3 V
0
-5
-10
Output Return Loss vs. Voltage Control
Freq.=10 GHz
V
DD
= +3 V
+85 °C
+25 °C
−40 °C
-20
-25
-30
-35
-40
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
+85 °C
+25 °C
−40 °C
|S22| (dB)
|S11| (dB)
-15
-15
-20
-25
-30
-35
-40
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
Voltage Control (V)
Voltage Control (V)
Data Sheet, September 2, 2016 | Subject to change without notice
3 of 19
www.qorvo.com
RFSA2113
®
Wide Bandwidth Voltage Controlled Attenuator
Measured Positive Attenuation Slope Performance
Test conditions unless otherwise noted:
V
DD
=+3 V, Temp=+25 °C, includes PCB and connector losses.
70
60
50
Input IP3 vs. Attenuation
Freq.=10 GHz
P
IN
=+13 dBm/Tone
V
DD
=+3 V
70
60
50
Input IP3 vs. Voltage Control
Freq.=10 GHz
P
IN
=+13 dBm/Tone
V
DD
=+3 V
Input IP3 (dBm)
40
30
20
10
+85 °C
+25 °C
−40 °C
Input IP3 (dBm)
40
30
20
10
0
+85 °C
+25 °C
−40 °C
0
-40
-35
-30
-25
-20
-15
-10
-5
0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
Attenuation (dB)
Voltage Control (V)
70
60
50
Input IP3 vs. Attenuation
P
IN
=+13 dBm/Tone
V
DD
=+3 V
Temp.=+25 °C
70
60
50
Input IP3 vs. Voltage Control
P
IN
=+13 dBm/Tone
V
DD
=+3 V
Temp.=+25 °C
Input IP3 (dBm)
Input IP3 (dBm)
40
40
30
20
10
30
20
10
0
-40
-35
-30
-25
-20
-15
-10
-5
0
50 MHz
10 GHz
1 GHz
13 GHz
3 GHz
16 GHz
6 GHz
18 GHz
50 MHz
10 GHz
1 GHz
13 GHz
3 GHz
16 GHz
6 GHz
18 GHz
0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
Attenuation (dB)
Voltage Control (V)
70
60
50
Input IP3 vs. Frequency
P
IN
=+13 dBm/Tone
V
DD
=+3 V
Temp.=+25 °C
Input IP3 (dBm)
40
30
20
10
0
0
2
4
6
8
10
12
14
16
18
VC=0 V
VC=+1.4 V
VC=+0.8 V
VC=+1.7 V
VC=+1.1 V
VC=+2.5 V
Frequency (GHz)
Data Sheet, September 2, 2016 | Subject to change without notice
4 of 19
www.qorvo.com
RFSA2113
®
Wide Bandwidth Voltage Controlled Attenuator
Measured Positive Attenuation Slope Performance
Test conditions unless otherwise noted:
V
DD
=+3 V, Temp=+25 °C, includes PCB and connector losses.
110
Input IP2 vs. Attenuation
Freq.=10 GHz
P
IN
=+13 dBm/Tone
V
DD
=+3 V
110
Input IP2 vs. Voltage Control
Freq.=10 GHz
P
IN
=+13 dBm/Tone
V
DD
=+3 V
100
90
80
100
90
80
+85 °C
+25 °C
−40 °C
Input IP2 (dBm)
Input IP2 (dBm)
70
70
+85 °C
+25 °C
−40 °C
60
50
40
30
60
50
40
30
20
10
0
-40
-35
-30
-25
-20
-15
-10
-5
0
20
10
0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
Attenuation (dB)
Voltage Control (V)
110
Input IP2 vs. Attenuation
P
IN
=+13 dBm/Tone
V
DD
=+3 V
Temp.=+25 °C
110
Input IP2 vs.Voltage Control
P
IN
=+13 dBm/Tone
V
DD
=+3 V
Temp.=+25 °C
100
90
80
100
90
80
Input IP2 (dBm)
70
Input IP2 (dBm)
70
60
50
40
30
60
50
40
30
20
10
0
-40
50 MHz
6 GHz
1 GHz
10 GHz
3 GHz
13 GHz
20
10
0
-15
-10
-5
0
50 MHz
6 GHz
1 GHz
10 GHz
3 GHz
13 GHz
-35
-30
-25
-20
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
Attenuation (dB)
Voltage Control (V)
110
100
Input IP2 vs. Frequency
90
80
Input IP2 (dBm)
70
60
50
40
30
20
10
P
IN
=+13 dBm/Tone
V
DD
=+3 V
Temp.=+25 °C
VC=0 V
VC=+1.4 V
VC=+0.8 V
VC=+1.7 V
VC=+1.1 V
VC=+2.5 V
0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
Frequency (GHz)
Data Sheet, September 2, 2016 | Subject to change without notice
5 of 19
www.qorvo.com
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