Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
1
Specifications subject to change without notice. 4/03A
GaAs IC 1 Bit Digital Attenuator
15 dB LSB DC2 GHz
Features
+3 V Control
Low Loss
Low Cost SOT-5 Plastic Package
SOT-5
AA116-72
0.074
(1.90 mm)
REF.
0.118
(3.00 mm)
0.087
(2.20 mm)
0.012
(0.30 mm)
0.000
(0.00 mm)
MIN.
0.122 (3.10 mm)
0.106 (2.70 mm)
0.064 (1.63 mm)
0.035 (0.90 mm)
0.020 (0.51 mm)
0.014 (0.35 mm)
PIN 1
0.037 (0.95 mm) REF.
0.069
(1.75 mm)
0.052
(1.30 mm)
0.024
(0.61 mm)
0.004
(0.10 mm)
0.0104 (0.26 mm)
0.0035 (0.09 mm) MIN.
0.012 (0.30 mm) TYP.
Description
The AA116-72 is a 1 bit GaAs IC FET digital attenuator
in a low cost package. This attenuator has an LSB of
15 dB. The AA116-72 is particularly suited where high
attenuation accuracy, low insertion loss and low
intermodulation products are required. Typical applications
include cellular radio, wireless data, and wireless local loop
gain level control circuits.
Parameter
1
Frequency
Min.
Typ.
Max.
Unit
Insertion Loss
2
0.501.00 GHz
0.35
0.45
dB
0.850.94 GHz
0.30
0.38
dB
1.002.00 GHz
0.40
0.50
dB
Attenuation Range
15.0
dB
Attenuation Accuracy
3
0.502.00 GHz
14.0
15.0
16.0
dB
0.850.94 GHz
14.5
15.0
15.5
dB
Return Loss
0.501.00 GHz
24
Electrical Specifications at 25C (0, +3 V)
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
Switching Characteristics
4, 5
Rise, Fall (10/90% or 90/10% RF)
150
ns
On, Off (50% CTL to 90/10% RF)
300
ns
Video Feedthru
70
mV
Input Power for 1 dB Compression
V
S
= +3 V
0.52.5 GHz
+20
dBm
V
S
= +5 V
0.52.5 GHz
+26
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +10 dBm
V
S
= +3 V
0.52.5 GHz
+41
dBm
V
S
= +5 V
0.52.5 GHz
+45
dBm
Control Voltages
V
Low
= 0 to 0.2 V
V
High
= +3 V @ 25
A Typ. to +5 V @ 50 A Typ.
Operating Characteristics at 25C (0, +3 V)
1. All measurements made in a 50
system, unless otherwise specified.
2. Insertion loss changes by 0.003 dB/C.
3. Maximum attenuation includes insertion loss.
4. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
5. Switching characteristics will vary with value chosen for C
BP
.
2
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
Specifications subject to change without notice. 4/03A
GaAs IC 1 Bit Digital Attenuator 15 dB LSB DC2 GHz
AA116-72
V
1
V
2
J
1
J
2
V
High
0
Insertion Loss
0
V
High
Attenuation
Truth Table
V
High
= +3 to +5 V.
12
3
54
C
BL
C
BP
C
BL
15
J
2
J
1
RF GND
V
1
V
2
Pin Out
DC blocking capacitors (C
BL
), bypass capacitor (C
BP
), and biasing resistor
must be supplied externally for positive voltage operation.
C
BL
= 33, C
BP
= 39 pF for operation @ 900 MHz.
Insertion Loss
Frequency (GHz)
S
21
(dB)
-1.0
-0.9
-0.8
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Attenuation
Frequency (GHz)
S
21
(dB)
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
Return Loss in Attenuation State
Frequency (GHz)
S
11
(dB)
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
-40
-36
-32
-28
-24
-20
-16
-12
-8
-4
0
Return Loss in Insertion Loss State
Frequency (GHz)
S
11
(dB)
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
-40
-36
-32
-28
-24
-20
-16
-12
-8
-4
0
Typical Performance Data (0, +3 V)
Characteristic
Value
RF Input Power
1 W > 500 MHz 0/8 V
0.5 W @ 50 MHz 0/8 V
Supply Voltage
+8 V
Control Voltage
-0.2 V, +8 V
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
Absolute Maximum Ratings
Note: Exceeding these parameters may cause irreversible damage.
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