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GaAs IC 4 Bit Digital Attenuator 1 dB LSB DC-2 GHz
AA210-25
(Previously AD210-25)*
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
PIN 16 0.050 (1.27 mm) BSC
PIN 1 INDICATOR
0.244 (6.20 mm) 0.228 (5.80 mm)
PIN 1
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.
0.020 (0.51 mm) 0.013 (0.33 mm) 0.049 (1.24 mm) 0.016 (0.41 mm)
0.068 (1.73 mm) MAX.
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)
Electrical Specifications at 25C (0, -5 V)
Parameter1 Insertion Loss3 Frequency2 DC-0.1 DC-0.5 DC-1.0 DC-2.0 GHz GHz GHz GHz Min. Typ. 0.9 1.1 1.3 2.1 15 DC-1.0 GHz DC-2.0 GHz VSWR (I/O) DC-1.0 GHz DC-2.0 GHz (0.25 + 3% of Attenuation Setting in dB) (0.4 + 5% of Attenuation Setting in dB) 1.3:1 1.6:1 1.4:1 1.8:1 Max. 1.2 1.5 1.8 2.5 Unit dB dB dB dB dB dB dB
Attenuation Range Attenuation Accuracy4
Operating Characteristics at 25C (0, -5 V)
Parameter1 Switching Characteristics5 Condition 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 Frequency Min. Typ. 15 25 25 +28 +22 +48 +38 Max. Unit ns ns mV dBm dBm dBm dBm
Input Power for 1 dB Compression Intermodulation Intercept Point (IP3) Control Voltages
VLow = 0 to -0.2 V @ 10 A Typ. VHigh = -5 @ 10 A Typ. to -8 V @ 200 A Typ.
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 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
Specifications subject to change without notice. 10/99A
1
GaAs IC 4 Bit Digital Attenuator 1 dB LSB DC-2 GHz
AA210-25
Typical Performance Data (0, -5 V)
4 2.0 1.8 1.6
3
dB
2 1.4 1 1.2
8 dB State
4 dB State 1 dB State 2 dB State 15 dB State
0 0 0.5 1 1.5 2.0
1.0 0
Insertion Loss 0.5 1 1.5 2.0
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
18
VSWR vs. Frequency
Absolute Maximum Ratings
Characteristic Value 1.5 W > 500 MHz 0/-8 V 0.5 W @ 50 MHz 0/-8 V +0.2 V, -8 V -40C to +85C -65C to +150C RF Input Power Control Voltage Operating Temperature
12
dB
6
Storage Temperature
Note: Exceeding these parameters may cause irreversible damage.
0
0
0.5
1.0
1.5
2.0
Pin Out
J1 GND GND GND GND GND GND
16 15 14 13 12 11 10
Frequency (GHz)
J2
9
Attenuation vs. Frequency (All States)
Truth Table
V1 1 dB -5 0 -5 -5 -5 0 0 -5 0 0 0 -5 V2 V3 -5 -5 0 -5 -5 0 V4 0 0 -5 0 0 -5 V5 -5 -5 -5 0 -5 0 V6 0 0 0 -5 0 -5 V7 -5 -5 -5 -5 0 0 V8 0 0 0 0 -5 -5 2 dB 4 dB 8 dB Attenuation J1-J2 Reference I. L. 1 dB 2 dB 4 dB 8 dB 15 dB
8 dB
4 dB
2 dB
1 dB
1
2
3
4
5
6
7
8
V8
V7
V6
V5
V4
V3
V2
V1
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

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