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
Parameter
1
Condition
Frequency
Min.
Typ.
Max.
Unit
Switching Characteristics
5
Rise, Fall (10/90% or 90/10% RF)
15
ns
On, Off (50% CTL to 90/10% RF)
25
ns
Video Feedthru
25
mV
Input Power for 1 dB Compression
0.502.0 GHz
+28
dBm
0.05 GHz
+22
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +5 dBm
0.502.0 GHz
+48
dBm
0.05 GHz
+38
dBm
Control Voltages
V
Low
= 0 to -0.2 V @ 10 A Typ.
V
High
= -5 @ 10 A Typ. to -8 V @ 200 A Typ.
GaAs IC 4 Bit Digital Attenuator
1 dB LSB DC2 GHz
Features
I Attenuation in 1 dB Steps to 15 dB with
High Accuracy
I Low Intermodulation Products
I Low Cost SOIC-16 Plastic Package
I Low DC Power Consumption
SOIC-16
AA210-25
(Previously AD210-25)*
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) BSC
PIN 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 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.
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.
Parameter
1
Frequency
2
Min.
Typ.
Max.
Unit
Insertion Loss
3
DC0.1 GHz
0.9
1.2
dB
DC0.5 GHz
1.1
1.5
dB
DC1.0 GHz
1.3
1.8
dB
DC2.0 GHz
2.1
2.5
dB
Attenuation Range
15
dB
Attenuation Accuracy
4
DC1.0 GHz
(0.25 + 3% of Attenuation
dB
Setting in dB)
DC2.0 GHz
(0.4 + 5% of Attenuation
dB
Setting in dB)
VSWR (I/O)
DC1.0 GHz
1.3:1
1.4:1
DC2.0 GHz
1.6:1
1.8:1
Electrical Specifications at 25C (0, -5 V)
Operating Characteristics at 25C (0, -5 V)
1. All measurements made in a 50
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.
*Due to conflict with another company's product numbering system, Alpha's attenuator products starting with the letters "AD" are being changed to "AA".
GaAs IC 4 Bit Digital Attenuator 1 dB LSB DC2 GHz
AA210-25
2
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
Insertion Loss vs. Frequency
Frequency (GHz)
0
4
3
0
0.5
1
1.5
2.0
2
1
dB
0
6
12
18
0.5
0
1.0
1.5
2.0
Frequency (GHz)
dB
Attenuation vs. Frequency (All States)
Frequency (GHz)
VSWR vs. Frequency
0
2.0
1.8
1.6
1.4
1.2
1.0
1
1.5
2.0
0.5
15 dB State
Insertion Loss
4 dB State
1 dB State
8 dB State
2 dB State
Typical Performance Data (0, -5 V)
V
8
V
7
V
6
V
5
V
4
V
3
V
2
V
1
J
1
GND GND GND GND GND GND
J
2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
8 dB
4 dB
2 dB
1 dB
Characteristic
Value
RF Input Power
1.5 W > 500 MHz 0/-8 V
0.5 W @ 50 MHz 0/-8 V
Control Voltage
+0.2 V, -8 V
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
Absolute Maximum Ratings
Note: Exceeding these parameters may cause irreversible damage.
V
1
V
2
V
3
V
4
V
5
V
6
V
7
V
8
Attenuation
1 dB
2 dB
4 dB
8 dB
J
1
J
2
-5
0
-5
0
-5
0
-5
0
Reference I. L.
0
-5
-5
0
-5
0
-5
0
1 dB
-5
0
0
-5
-5
0
-5
0
2 dB
-5
0
-5
0
0
-5
-5
0
4 dB
-5
0
-5
0
-5
0
0
-5
8 dB
0
-5
0
-5
0
-5
0
-5
15 dB
Truth Table
Pin Out
PDF 
ZIP