Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200214 Rev. B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • February 13, 2008 1
AA264-87, AA264-87LF: GaAs IC 4-Bit Digital Attenuator
2 dB LSB Positive Control 0.5–2 GHz
DATA SHEET
Features
●Attenuation 2 dB steps to 30 dB with high accuracy
●Single positive control for each bit
●Low DC Power consumption
●Small, low-cost TSSOP-16 plastic package
●Available lead (Pb)-free and RoHS-compliant MSL-1 @ 260 °C
per JEDEC J-STD-020
Description
The AA264-87 is a 4-bit, single positive control GaAs IC FET dig-
ital attenuator in a low-cost TSSOP-16 package. The attenuator
requires external DC blocking capacitors, positive supply voltage
(VS) and four individual positive control voltages (V1–V4). The
AA264-87 is particularly suited where high attenuation accuracy,
low insertion loss and low intermodulation products are required.
Typical applications include base station, wireless data and wire-
less local loop gain control circuits.
1 2 3 4 5 6 8
16 15 14 13 12 11 9
7
10
16 dB
8dB
4 dB
2 dB
GND
V4
V3
V2
J1
GND
GND
GND
GND
GND
GND
GND
GND
GND
V1
J2
CBL
CBL
VS
10 kΩ
Pin Out
DC blocking capacitors (CBL) and biasing resistor must be supplied externally for positive
voltage operation.
CBL = 47 pF for operation >500 MHz.
Skyworks offers lead (Pb)-free, RoHS (Restriction of
Hazardous Substances)-compliant packaging.
NEW
Innovation to GoTM
Now available for purchase online.
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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
February 13, 2008 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • 200214 Rev. B
DATA SHEET • AA264-87, AA264-87LF
2
Parameter Condition Frequency Min. Typ. Max. Unit
Insertion loss 0.5–1.0 GHz 1.6 2.0 dB
1.0–2.0 GHz 1.8 2.4 dB
Attenuation range 30 dB
Attenuation accuracy 0.5–1.0 GHz ± (0.2 + 3% of attenuation dB
setting in dB)
1.0–2.0 GHz ± (0.3 + 5% of attenuation dB
setting in dB)
1.0–2.0 GHz ± (0.3 + 6% of attenuation dB
setting in dB)
VSWR (Input/Output) 0.5–0.8 GHz 1.8:1 2.2:1
0.8–2.0 GHz 1.5:1 2.0:1
Switching characteristics T = 25 °C
Rise, fall 10/90% or 90/10% RF 150 ns
On, off 50% CTL to 90/10% RF 300 ns
Video feedthru TRISE = 1 ns, BW = 500 MHz 70 mV
Input power for 1 dB compression VS= 3 V 0.5–2.0 GHz 15 21 dBm
VS= 5 V 0.5–2.0 GHz 21 27 dBm
Intermodulation intercept point (IP3) For two-tone input power 5 dBm
VS= 3 V 0.5–2.0 GHz 36 44 dBm
VS= 5 V 0.5–2.0 GHz 37 45 dBm
Control voltages VLOW 0 0.2 V
VHIGH 3 5.0 V
Supply voltages VCTL = 5 V VHIGH-0.2 VHIGH+0.2 V
Control port current VCTL = VLOW 20 µA
VCTL = 3 V 100 µA
VCTL = 5 V 200 µA
Electrical Specifications
-40 °C < T < +85 °C, ZO= 50 Ω, VCTL = 0/5 V, unless otherwise specified.
DATA SHEET • AA264-87, AA264-87LF
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200214 Rev. B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • February 13, 2008 3
Insertion Loss (dB)
Frequency (GHz)
Insertion Loss vs. Frequency
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0
0 0.5 1.0 1.5 2.0 2.5 3.0
25 °C
85 °C
-40 °C
IP3 (dBm)
Attenuation (dB)
IP3 vs. Attenuation and
Temperature (500 MHz)
35
40
45
50
55
60
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
25 °C
85 °C
-40 °C
VSWR vs. Frequency (25 ˚C)
VSWR
0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
1.0
1.2
1.4
1.6
1.8
2.0
2.2
Ins. Loss
2 dB
4 dB
8 dB
16 dB
30 dB
Ins. Loss
2 dB
4 dB
8 dB
16 dB
30 dB
VSWR vs. Frequency (85 ˚C)
VSWR
0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
1.0
1.2
1.4
1.6
1.8
2.0
2.2
VSWR
Frequency (GHz)
VSWR vs. Frequency (-40 ˚C)
0 0.5 1.0 1.5 2.0 2.5 3.0
1.0
1.2
1.4
1.6
1.8
2.0
2.2
Ins. Loss
2 dB
4 dB
8 dB
16 dB
30 dB
Typical Performance Data
ZO= 50 Ω, VCTL = 0/5 V, unless otherwise specified.
Compression Point vs. Attenuation, Voltage,
and Temperature
Attenuation Control Input Power @ 1 dB Compression
State Voltage (V) 25 °C (dBm) 85 °C (dBm) -40 °C (dBm)
Ins. Loss 5 29 28.9 29
2 dB 5 28.3 28.1 28.1
4 dB 5 35.2 34.7 35
8 dB 5 25.8 25.3 25.4
16 dB 5 21.7 21.3 21.6
30 dB 5 24.4 23.2 27.2
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
February 13, 2008 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • 200214 Rev. B
DATA SHEET • AA264-87, AA264-87LF
4
0 0.5 1.0 1.5 2.0 2.5 3.0
Deviation from Nominal
Attenuation (dB)
Frequency (GHz)
Attenuation Accuracy vs. Frequency (25 ˚C)
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
2 dB
4 dB
8 dB
16 dB
30 dB
0 0.5 1.0 1.5 2.0 2.5 3.0
Deviation from Nominal
Attenuation (dB)
Frequency (GHz)
Attenuation Accuracy vs. Frequency (85 ˚C)
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
2 dB
4 dB
8 dB
16 dB
30 dB
0 0.5 1.0 1.5 2.0 2.5 3.0
Deviation from Nominal
Insertion Phase (Deg.)
Frequency (GHz)
Attenuation Phase Accuracy
vs. Frequency (25 °C)
-15
-5
5
15
25
35
45
55
65
75
85
2 dB
4 dB
8 dB
16 dB
30 dB
0 0.5 1.0 1.5 2.0 2.5 3.0
Deviation from Nominal
Insertion Phase (Deg.)
Frequency (GHz)
Attenuation Phase Accuracy 
vs. Frequency (85 ˚C)
-15
-5
5
15
25
35
45
55
65
75
85
2 dB
4 dB
8 dB
16 dB
30 dB
0 0.5 1.0 1.5 2.0 2.5 3.0
Deviation from Nominal
Attenuation (dB)
Frequency (GHz)
Attenuation Accuracy
vs. Frequency (-40 ˚C)
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
2 dB
4 dB
8 dB
16 dB
30 dB
0 0.5 1.0 1.5 2.0 2.5 3.0
Deviation from Nominal
Insertion Phase (Deg.)
Frequency (GHz)
Attenuation Phase Accuracy 
vs. Frequency (-40 ˚C)
-15
-5
5
15
25
35
45
55
65
75
85
2 dB
4 dB
8 dB
16 dB
30 dB
DATA SHEET • AA264-87, AA264-87LF
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200214 Rev. B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • February 13, 2008 5
Insertion Loss (dB)
Frequency (GHz)
Insertion Loss vs. Frequency
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0
0 0.5 1.0 1.5 2.0 2.5 3.0
25 °C
85 °C
-40 °C
VSWR vs. Frequency (25 ˚C)
VSWR
0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
Ins. Loss
2 dB
4 dB
8 dB
16 dB
30 dB
1.0
1.2
1.4
1.6
1.8
2.0
2.2
Deviation from Nominal
Attenuation (dB)
Frequency (GHz)
Attenuation Accuracy vs. Frequency (25 ˚C)
-4.0
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
2 dB
4 dB
8 dB
16 dB
30 dB
0 0.5 1.0 1.5 2.0 2.5 3.0
0 0.5 1.0 1.5 2.0 2.5 3.0
Deviation from Nominal
Attenuation (dB)
Frequency (GHz)
Attenuation Accuracy vs. Frequency (85 ˚C)
-4.5
-4.0
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
2 dB
4 dB
8 dB
16 dB
30 dB
0 0.5 1.0 1.5 2.0 2.5 3.0
Deviation from Nominal
Insertion Phase (dB)
Frequency (GHz)
Attenuation Phase Accuracy
vs. Frequency (25 ˚C)
-10
0
10
20
30
40
50
60
70
80
90
2 dB
4 dB
6 dB
8 dB
30 dB
Deviation from Nominal
Attenuation (dB)
Frequency (GHz)
Attenuation Accuracy vs. Frequency (-40 ˚C)
0 0.5 1.0 1.5 2.0 2.5 3.0
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
2 dB
4 dB
8 dB
16 dB
30 dB
Typical Performance Data (0, 3 V)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
February 13, 2008 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • 200214 Rev. B
DATA SHEET • AA264-87, AA264-87LF
6
Truth Table
V1V2V3V4Attenuation
16 dB 8 dB 4 dB 2 dB J1–J2
VHIGH VHIGH VHIGH VHIGH Reference I.L.
VHIGH VHIGH VHIGH 0 2 dB
VHIGH VHIGH 0V
HIGH 4 dB
VHIGH 0V
HIGH VHIGH 8 dB
0V
HIGH VHIGH VHIGH 16 dB
00 0 030 dB max. atten.
VHIGH = 3 to 5 V (VS= VHIGH ± 0.2 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 -40 °C to +85 °C
Storage temperature -65 °C to +150 °C
Absolute Maximum Ratings
IP3 (dBm)
Attenuation (dB)
IP3 vs. Attenuation and
Temperature (500 MHz)
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
37
39
41
43
45
47
49
51
53
55
57
25 °C
85 °C
-40 °C
Compression Point vs. Attenuation, Voltage,
and Temperature
Attenuation Control Input Power @ 1 dB Compression
State Voltage (V) 25 °C (dBm) 85 °C (dBm) -40 °C (dBm)
Ins. Loss 3 21.7 21.6 22.6
2 dB 3 21.2 20.7 21.4
4 dB 3 34.3 31 34.3
8 dB 3 33.6 23 32.9
16 dB 3 18 17 21.4
30 dB 3 22.4 21.2 24.1
TSSOP-16
0.173 (4.40 mm)
± 0.004 (0.10 mm)
0.197 (5.00 mm)
± 0.004 (0.10 mm)
0.252 (6.4 mm)
BSC
Pin 16
Pin 1
Indicator
Pin 1
0.006 (0.15 mm) Max.
0.002 (0.05 mm) Min.
0.047 (1.20 mm)
Max.
0.035 (0.90 mm)
+ 0.006 (0.15 mm) /
-0.004 (-0.10 mm)
0.0256 (0.65 mm)
BSC
0.009 (0.22 mm) Ref.
R 0.004 (0.09 mm)
Min.
0.024
(0.60 mm)
± 0.006
(0.15 mm)
Performance is guaranteed only under the conditions listed in the specifications table and is
not guaranteed under the full range(s) described by the Absolute Maximum specifications.
Exceeding any of the absolute maximum/minimum specifications may result in permanent
damage to the device and will void the warranty.
CAUTION: Although this device is designed to be as robust as
possible, ESD (Electrostatic Discharge) can damage
this device. This device must be protected at all times
from ESD. Static charges may easily produce poten-
tials of several kilovolts on the human body or
equipment, which can discharge without detection.
Industry-standard ESD precautions must be employed
at all times.
Recommended Solder Reflow Profiles
Refer to the “Recommended Solder Reflow Profile”
Application Note.
DATA SHEET • AA264-87, AA264-87LF
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200214 Rev. B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • February 13, 2008 7
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