Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
1
Specifications subject to change without notice. 10/02A
GaAs IC 5 Bit Digital Attenuator with Driver
1 dB LSB Positive Control DC2 GHz
Features
Attenuation 1 dB Steps to 31 dB With
High Accuracy
Single Positive Control (+3 V or +5 V)
for Each Bit
Low DC Power Consumption
CMOS Integrated Silicon Driver, Positive
and Negative Supplies Required
Designed for Use at IF Frequencies
High Noise Linearity @ P
IN
< -10 dBm
SSOP-20
AA117-85
0.012
(0.30 mm)
REF.
0.0256
(0.65 mm)
BSC
0.069
(1.75 mm)
0.004
(0.10 mm)
0.008 (0.20 mm) MAX.
0.002 (0.05 mm) MIN.
0.010 (0.25 mm)
0.004 (0.090 mm)
8 MAX.
0.030 (0.75 mm)
0.008 (0.10 mm)
0.078
(2.00 mm)
MAX.
0.283 (7.20 mm)
0.012 (0.30 mm)
PIN 20
PIN 1
0.209 (5.30 mm)
0.012 (0.30 mm)
0.307 (7.80 mm)
0.016 (0.307 mm)
PIN 1
INDICATOR
Description
The AA117-85 is a 5 bit, single positive control GaAs IC
FET digital attenuator with driver. It is particularly suited
at IF frequencies where high attenuation accuracy, low
insertion loss and low intermodulation products are
required. Typical applications include base station,
wireless data, broadband and wireless local loop gain
control circuits. For single supply design and higher input
signal levels, see AA110-85.
2
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
Specifications subject to change without notice. 10/02A
GaAs IC 5 Bit Digital Attenuator with Driver 1 dB LSB Positive Control DC2 GHz
AA117-85
Parameter
1
Condition
Frequency
Min.
Typ.
Max.
Unit
Insertion Loss
2
DC0.5 GHz
1.4
1.7
dB
DC1.0 GHz
1.7
2.1
dB
DC2.0 GHz
2.2
2.6
dB
Attenuation Range
31
dB
Attenuation Accuracy
3
DC0.5 GHz
(0.2 + 2% of
Attenuation Setting in dB)
dB
DC1.0 GHz
(0.25 + 3% of
Attenuation Setting in dB)
dB
DC2.0 GHz
(0.4 + 6% of
Attenuation Setting in dB)
dB
VSWR (I/O)
4
DC2.0 GHz
1.5:1
1.8:1
Switching Characteristics
5
Rise, Fall (10/90% or 90/10% RF)
15
ns
On, Off (50% CTL to 90/10% RF)
50
ns
Video Feedthru
50
mV
Input Power for 1 dB Compression
V
CC
= +5 V, V
SS
= -3 V
0.52.0 GHz
+22
+27
dBm
0.05 GHz
+16
+20
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +5 dBm
0.52.0 GHz
+40
+46
dBm
V
CC
= +5 V
0.05 GHz
+28
+34
dBm
Supply Voltages
6
V
CC
2.5
3.0
5.0
V
V
SS
-2.5
-3.0
-3.5
V
Supply Currents
V
CC
= 5 V, V
SS
= -3 V
1.5
mA
V
CC
= 3 V, V
SS
= -3 V
1.0
mA
Control Voltages
7
V
CC
= 5 V, V
SS
= -3 V
CTL1, CTL2, CTL4, CTL8, CTL16 = Logic 0
0
0.8
V
CTL1, CTL2, CTL4, CTL8, CTL16 = Logic 1
2.5
3.0
5.0
V
Electrical Specifications at -40C to +85C (V
CC
= +5 V, V
SS
= -3 V)
1. All measurements made in a 50
system, unless otherwise specified.
2. Insertion loss changes by 0.003 dB/C.
3. Attenuation referenced to insertion loss.
4. Input/output.
5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
6. V
CC
must be supplied prior to V
SS
.
7. Control voltage must not exceed V
CC
.
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
3
Specifications subject to change without notice. 10/02A
GaAs IC 5 Bit Digital Attenuator with Driver 1 dB LSB Positive Control DC2 GHz
AA117-85
Frequency (GHz)
Insertion Loss vs. Frequency
0
0.5
1.0
1.5
2.0
Insertion Loss (dB)
-2.5
-2.3
-2.1
-1.9
-1.7
-1.5
-1.3
-1.1
-0.9
-0.7
-0.5
+25C
+85C
-40C
Atenuation (dB)
IP3 vs. Attenuation and Temperature,
Main Bits (50 MHz) V
CC
= +5 V
IP3 (dBm)
0
6
12
18
2
8
14
20
4
10
16
22 24 26 28 30
28
30
32
34
36
38
40
+25C
+85C
-40C
Frequency (GHz)
VSWR vs. Frequency (25C)
VSWR
0
0.5
1.0
1.5
2.0
1.0
1.1
1.2
1.3
1.4
1.5
1.6
Ins. Loss
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Frequency (GHz)
VSWR vs. Frequency (85C)
VSWR
0
0.5
1.0
1.5
2.0
1.0
1.1
1.2
1.3
1.4
1.5
1.6
Ins. Loss
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Frequency (GHz)
VSWR vs. Frequency (-40C)
VSWR
0
0.5
1.0
1.5
2.0
1.0
1.1
1.2
1.3
1.4
1.5
1.6
Ins. Loss
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Typical Performance Data (V
CC
= +5 V)
4
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
Specifications subject to change without notice. 10/02A
GaAs IC 5 Bit Digital Attenuator with Driver 1 dB LSB Positive Control DC2 GHz
AA117-85
Frequency (GHz)
Attenuation Accuracy vs. Frequency (25C)
-1.5
-1.0
-0.5
0
0.5
1.0
0
0.5
1.0
1.5
2.0
Deviation from Nominal
Attenuation (dB)
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Frequency (GHz)
Attenuation Accuracy vs. Frequency (85C)
-1.5
-1.0
-0.5
0
0.5
1.0
0
0.5
1.0
1.5
2.0
Deviation from Nominal
Attenuation (dB)
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Frequency (GHz)
Attenuation Phase Accuracy
vs. Frequency (25C)
-10
0
10
20
40
30
50
60
0
0.5
1.0
1.5
2.0
Deviation from Nominal
Insertion Phase (Deg.)
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Frequency (GHz)
Attenuation Phase Accuracy
vs. Frequency (85C)
-10
0
10
20
40
30
50
60
0
0.5
1.0
1.5
2.0
Deviation from Nominal
Insertion Phase (Deg.)
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Frequency (GHz)
Attenuation Accuracy vs. Frequency (-40C)
-1.5
-1.0
-0.5
0
0.5
1.0
0
0.5
1.0
1.5
2.0
Deviation from Nominal
Attenuation (dB)
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Frequency (GHz)
Attenuation Phase Accuracy
vs. Frequency (-40C)
-10
0
10
20
40
30
50
60
0
0.5
1.0
1.5
2.0
Deviation from Nominal
Insertion Phase (Deg.)
1 dB
2 dB
4 d B
8 dB
16 dB
31 dB
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
5
Specifications subject to change without notice. 10/02A
GaAs IC 5 Bit Digital Attenuator with Driver 1 dB LSB Positive Control DC2 GHz
AA117-85
Frequency (GHz)
Insertion Loss vs. Frequency
0
0.5
1.0
1.5
2.0
Insertion Loss (dB)
-2.5
-2.3
-2.1
-1.9
-1.7
-1.5
-1.3
-1.1
-0.9
-0.7
-0.5
Ins. Loss
+85C
-40C
Frequency (GHz)
VSWR vs. Frequency (25C)
VSWR
0
0.5
1.0
1.5
2.0
1.0
1.1
1.2
1.3
1.4
1.5
1.6
Ins. Loss
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Frequency (GHz)
Attenuation Accuracy vs. Frequency (25C)
-1.5
-1.0
-0.5
0
0.5
1.0
0
0.5
1.0
1.5
2.0
Deviation from Nominal
Attenuation (dB)
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Frequency (GHz)
Attenuation Accuracy vs. Frequency (85C)
-1.5
-1.0
-0.5
0
0.5
1.0
0
0.5
1.0
1.5
2.0
Deviation from Nominal
Attenuation (dB)
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Frequency (GHz)
Attenuation Phase Accuracy
vs. Frequency (25C)
-10
0
10
20
40
30
50
60
0
0.5
1.0
1.5
2.0
Deviation from Nominal
Insertion Phase (Deg.)
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Frequency (GHz)
Attenuation Accuracy vs. Frequency (-40C)
-1.5
-1.0
-0.5
0
0.5
1.0
0
0.5
1.0
1.5
2.0
Deviation from Nominal
Attenuation (dB)
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Typical Performance Data (V
CC
= +3 V)
6
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
Specifications subject to change without notice. 10/02A
GaAs IC 5 Bit Digital Attenuator with Driver 1 dB LSB Positive Control DC2 GHz
AA117-85
J
1
GND
GND
GND
GND
GND
GND
GND
GND
J
2
N/C
V
CC
V
SS
CTL1
CTL2
CTL4
CTL8
CTL16
0.01
F
-2.5 to -3.5 V
+2.5 to +5 V
(Power Supply
Bypass Capacitor)
0.01
F
N/C
N/C GND
GND
12
3
4
5
6
7
8
20
19
18
17
16
15
14
13
91
0
12
11
1 dB
Dr
iv
er
2 dB
4 dB
8 dB
16 dB
Pin Out
Attenuation
CTL1
CTL2
CTL4
CTL8
CTL16
J
1
J
2
0
0
0
0
0
Ins. Loss
1
0
0
0
0
1 dB
0
1
0
0
0
2 dB
0
0
1
0
0
4 dB
0
0
0
1
0
8 dB
0
0
0
0
1
16 dB
1
1
1
1
1
31 dB
Truth Table
Characteristic
Value
RF Input Power
2 W > 500 MHz, 0/6 V
0.5 W > 50 MHz, 0/6 V
Supply Voltage
6 V
Control Voltage
1
-0.2 V, +6 V
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
JC
85C/W
Absolute Maximum Ratings
Note: Exceeding these ratings may cause irreversible damage.
1. Control voltage must not exceed supply voltage.
Compression Point vs. Attenuation,
Voltage, and Temperature
Attenuation
V
SS
Input Power @ 1 dB Compression
State
Voltage (V) +25C (dBm) +85C (dBm) -40C (dBm)
Ins. Loss
-3
16.6
16.6
16.5
1 dB
-3
17.5
17.5
17.5
2 dB
-3
18.9
19
18.8
4 dB
-3
16.3
16.6
16.3
8 dB
-3
20.6
21.1
21.8
16 dB
-3
15.5
15.1
16.2
31 dB
-3
20.2
19.9
20.1
Frequency = 50 MHz.
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