GaAs IC 4 Bit Digital Attenuator
1 dB LSB DC–2 GHz
AA210-25
(Previously AD210-25)*
Features
SOIC-16
I Attenuation in 1 dB Steps to 15 dB with
High Accuracy
0.050
(1.27 mm) BSC
PIN 16
I Low Intermodulation Products
I Low Cost SOIC-16 Plastic Package
I Low DC Power Consumption
0.244 (6.20 mm)
0.228 (5.80 mm)
PIN 1
INDICATOR
PIN 1
0.020 (0.51 mm)
0.013 (0.33 mm)
0.016 MAX.
(0.41 mm)
x 45˚
Description
0.068
(1.73 mm) MAX.
0.049 (1.24 mm)
0.016 (0.41 mm)
The AD210-25 is an IC FET digital attenuator consisting
of four monolithic attenuators with LSB of 1 dB and a total
attenuation of 15 dB with all attenuators connected.
Attenuator bits are switched with -5 and 0 V.
CHAMFER
8˚ MAX.
0.394 (10.00 mm)
0.386 (9.80 mm)
The AD210-25 is particularly suited where high
attenuation accuracy, low insertion loss and low
intermodulation products are required.Typical applications
include cellular, radio, wireless data, wireless local loop
and other gain/level control circuits.
0.158 (4.00 mm)
0.150 (3.80 mm)
0.010 (0.25 mm)
0.004 (0.10 mm)
0.0098 (0.25 mm)
0.0075 (0.19 mm)
Electrical Specifications at 25°C (0, -5 V)
1
2
Parameter
Frequency
Min.
Typ.
Max.
Unit
3
Insertion Loss
DC–0.1 GHz
DC–0.5 GHz
DC–1.0 GHz
DC–2.0 GHz
0.9
1.1
1.3
2.1
1.2
1.5
1.8
2.5
dB
dB
dB
dB
Attenuation Range
15
dB
dB
4
Attenuation Accuracy
DC–1.0 GHz
DC–2.0 GHz
(0.25 ꢀ 3ꢁ of Attenuation
Setting in dB)
(0.4 ꢀ 5ꢁ of Attenuation
Setting in dB)
dB
VSWR (I/O)
DC–1.0 GHz
DC–2.0 GHz
1.3:1
1.6:1
1.4:1
1.8:1
Operating Characteristics at 25°C (0, -5 V)
1
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
5
Switching Characteristics
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
15
25
25
ns
ns
mV
Input Power for 1 dB Compression
Intermodulation Intercept Point (IP3)
Control Voltages
0.50–2.0 GHz
0.05 GHz
+28
+22
dBm
dBm
For Two-tone Input Power +5 dBm
0.50–2.0 GHz
0.05 GHz
+48
+38
dBm
dBm
V
V
= 0 to -0.2 V @ 10 µA Typ.
Low
= -5 @ 10 µA Typ. to -8 V @ 200 µA Typ.
High
4. Attenuation referenced to insertion loss.
5.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. DC = 300 kHz.
3. Insertion loss changes by 0.003 dB/°C.
*Due to conflict with another company’s product numbering system, Alpha’s attenuator products starting with the letters “AD” are being changed to “AA”.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
1
Specifications subject to change without notice. 10/99A