GaAs IC 5 Bit Digital Attenuator
0.5 dB LSB Positive Control 0.5–2.0 GHz
AA106-86
Features
I
Attenuation 0.5 dB Steps to 15.5 dB
with High Accuracy
I
Single Positive Control (+3 to +5 V) for
Each Bit
I
Low DC Power Consumption
I
Miniature Low Cost MSOP-10
Plastic Package
MSOP-10
PIN 10
PIN 1
INDICATOR
0.118 (3.00 mm)
± 0.006 (0.15 mm)
0.193
(4.90 mm)
± 0.006
(0.15 mm)
PIN 1
0.034
(0.86 mm)
± 0.004
(0.10 mm)
0.118 (3.00 mm)
± 0.006 (0.15 mm)
8˚–16˚
0˚–6˚
0.043
(1.09 mm)
MAX.
0.022 (0.55 mm)
± 0.006 (0.15 mm)
0.0197
(0.500 mm)
BSC
Description
The AA106-86 is a 5 bit, single positive control GaAs IC
FET digital attenuator in a low cost MSOP-10 package.This
attenuator has an LSB of 0.5 dB and a total attenuation of
15.5 dB. The attenuator requires external DC blocking
capacitors, positive supply voltage (V
S
) and five individual
bit control voltages (V
1
–V
5
). The AA106-86 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.
0.009 (0.23 mm)
REF.
0.006 (0.15 mm) MAX.
0.002 (0.05 mm) MIN.
Electrical Specifications at 25°C (0, +3 V), (0, +5 V)
Parameter
1
Insertion
Loss
2
Frequency
0.5–1.0 GHz
1.0–2.0 GHz
0.5–1.0 GHz
1.0–2.0 GHz
VSWR (I/O)
0.5–2.0 GHz
Min.
Typ.
2.0
3.0
15.5
± (0.2 + 3% of
Attenuation Setting in dB)
± (0.3 + 5% of
Attenuation Setting in dB)
1.5:1
2.0:1
Max.
2.4
3.4
Unit
dB
dB
dB
dB
dB
Attenuation Range
Attenuation Accuracy
3
Operating Characteristics at 25°C (0, +5 V)
Parameter
Switching
Characteristics
4
Condition
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
V
S
= +3 V
V
S
= +5 V
For Two-tone Input Power +5 dBm
V
S
= +3 V
V
S
= +5 V
0.9–2.0 GHz
0.9–2.0 GHz
0.9–2.0 GHz
0.9–2.0 GHz
Frequency
Min.
Typ.
150
300
70
+21
+27
+41
+45
Max.
Unit
ns
ns
mV
dBm
dBm
dBm
dBm
Input Power for 1 dB Compression
Intermodulation Intercept Point (IP3)
Control Voltages
V
Low
= 0 to 0.2 V @ 20 µA Max.
V
High
= +3 V @ 100 µA Max. to +5 V @ 200 µA Max.
V
S
= V
High
± 0.2 V
3. Attenuation referenced to insertion loss.
4. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
1. All measurements made in a 50
Ω
system, unless otherwise specified.
2. Insertion loss changes by 0.003 dB/°C.
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
sales@alphaind.com
•
www.alphaind.com
Specifications subject to change without notice. 10/99A
1
ALPHA [ ALPHA INDUSTRIES ]
