Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 1
Specifications subject to change without notice. 3/99A
Parameter Condition Frequency Min. Typ. Max. Unit
Switching Characteristics
5
Rise, Fall (10/90% or 90/10% RF) 10 ns
On, Off (50% CTL to 90/10% RF) 20 ns
Video Feedthru 20 mV
Input Power for 1 dB Compression 0.50–1.0 GHz +24 dBm
0.05 GHz +14 dBm
Intermodulation Intercept Point (IP3) For Two-tone Input Power +13 dBm 0.50–1.0 GHz +43 dBm
0.05 GHz +32 dBm
Control Voltages V
Low
= 0 to -0.2 V @ 20 µA Max.
V
High
= -5 V @ 50 µA to -8 V at 200 µA Max.
GaAs IC 4 Bit Digital Attenuator
3 dB LSB DC–1 GHz
Features
a73 Attenuation in 3 dB Steps to 45 dB
a73 Low DC Power Consumption
a73 Low Cost SOIC-16 Plastic Package
SOIC-16
AT001D6-25
0.158 (4.00 mm)
0.150 (3.80 mm)
0.068
(1.73 mm) MAX.
0.244 (6.20 mm)
0.228 (5.80 mm)
0.049 (1.24 mm)
0.016 (0.41 mm)
0.016 MAX.
(0.41 mm)
x 45˚
CHAMFER

0.020 (0.51 mm)
0.013 (0.33 mm)
0.050
(1.27 mm) BSCPIN 16
PIN 1
PIN 1
INDICATOR
0.394 (10.00 mm)
0.386 (9.80 mm)
0.010 (0.25 mm)
0.004 (0.10 mm)
0.0098 (0.25 mm)
0.0075 (0.19 mm)
8˚ MAX.
Description
The AT001D6-25 is an IC FET digital attenuator consisting
of four monolithic attenuators with LSB of 3 dB and a total
attenuation of 45 dB with all attenuators connected.
The attenuator is packaged in the plastic 16 lead surface
mount package for low cost commercial cellular radio
applications.
Parameter
1
Frequency
2
Min. Typ. Max. Unit
Insertion Loss
3
DC–0.5 GHz 2.5 3.2 dB
DC–1.0 GHz 3.5 4.0 dB
Attenuation Range
4
DC–1.0 GHz 10% or ± 0.5 dB
Whichever is Greater
12% for 45 dB Attenuation
VSWR (I/O) DC–0.5 GHz 1.4:1 1.6:1
DC–1.0 GHz 1.6:1 1.8:1
Electrical Specifications at 25°C (0, -5 V)
Operating Characteristics at 25°C (0, -5 V)
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. DC = 300 kHz.
3. Insertion loss changes by 0.003 dB/°C.
4. Attenuation referenced to insertion loss.
5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.