AA210-25 Datasheet, PDF (1/2 Pages) Alpha Industries – GaAs IC 4 Bit Digital Attenuator 1 dB LSB DC-2 GHz

GaAs IC 4 Bit Digital Attenuator
1 dB LSB DC–2 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
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.
Electrical Specifications at 25°C (0, -5 V)
Insertion Loss³
Parameter¹
Attenuation Range
Attenuation Accuracy⁴
VSWR (I/O)
SOIC-16
PIN 16
AA210-25
(Previously AD210-25)*
0.050
(1.27 mm) BSC
PIN 1
INDICATOR
0.244 (6.20 mm)
0.228 (5.80 mm)
PIN 1
0.068
(1.73 mm) MAX.
0.020 (0.51 mm)
0.013 (0.33 mm)
0.049 (1.24 mm)
0.016 (0.41 mm)
0.016 MAX.
(0.41 mm)
x 45˚
CHAMFER
8˚ MAX.
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)
0.158 (4.00 mm)
0.150 (3.80 mm)
Frequency²
DC–0.1 GHz
DC–0.5 GHz
DC–1.0 GHz
DC–2.0 GHz
DC–1.0 GHz
DC–2.0 GHz
DC–1.0 GHz
DC–2.0 GHz
Min.
Typ. Max. Unit
0.9
1.2
dB
1.1
1.5
dB
1.3
1.8
dB
2.1
2.5
dB
15
dB
± (0.25 + 3% of Attenuation dB
Setting in dB)
± (0.4 + 5% of Attenuation
dB
Setting in dB)
1.3:1
1.6:1
1.4:1
1.8:1
Operating Characteristics at 25°C (0, -5 V)
Parameter¹
Switching Characteristics⁵
Input Power for 1 dB Compression
Intermodulation Intercept Point (IP3)
Control Voltages
Condition
Frequency
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
0.50–2.0 GHz
0.05 GHz
For Two-tone Input Power +5 dBm
0.50–2.0 GHz
0.05 GHz
V_Low = 0 to -0.2 V @ 10 µA Typ.
V_High = -5 @ 10 µA Typ. to -8 V @ 200 µA Typ.
Min.
Typ.
15
25
25
+28
+22
+48
+38
Max.
Unit
ns
ns
mV
dBm
dBm
dBm
dBm
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.
*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 [e-mail] • www.alphaind.com
1
Specifications subject to change without notice. 10/99A