AA220-25 ALPHA | Alldatasheet
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Technical content
Features
I Attenuation in 2 dB Steps to 30 dB with High Accuracy I Low Cost SOIC-16 Plastic Package I Low DC Power Consumption AA220-25 (Previously AD220-25)* 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 AD220-25 is an IC FET digital attenuator consisting of four monolithic attenuators with LSB of 2 dB and a total attenuation of 30 dB with all attenuators connected. The AD220-25 is particularly well 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. Operating Characteristics at 25°C (0, -5 V) SOIC-16 Parameter1 Frequency2 Min. Typ. Max. Unit Insertion Loss3 DC–0.1 GHz 1.2 1.4 dB DC–0.5 GHz 1.4 1.7 dB DC–1.0 GHz 1.5 1.8 dB DC–2.0 GHz 2.0 2.5 dB Attenuation Range 30 dB Attenuation Accuracy4 DC–1.0 GHz ± (0.2 + 3% of dB Attenuation Setting in dB) DC–2.0 GHz ± (0.3 + 3% of dB Attenuation Setting in dB) VSWR (I/O) DC–1.0 GHz 1.4:1 1.6:1 Electrical Specifications 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. *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 2 dB LSB DC–2 GHz AA220-25 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 dB Frequency (GHz) 0 0.5 1.5 2.0 0 0.5 1.0 1.5 2.0 Frequency (GHz) dB Attenuation vs. Frequency Frequency (GHz) VSWR vs. Frequency dB 2.0 1.8 1.6 1.4 1.2 1.0 0.5 1.5 2.0 1 16 dB State Insertion Loss 4 dB State 30 dB State 8 dB State 2 dB State Typical Performance Data (0, -5 V) 12 3 4 5 6 7 8 16 15 14 13 12 11 10 9 16 dB 8 dB 4 dB 2 dB V7 V6 V5 V4 V3 V2 V1 J1 GND GND GND GND GND GND J 2 Characteristic Value RF Input Power 2 W > 500 MHz 0/-8 V
0.5 W @ 50 MHz 0/-8 V
Control Voltage +0.2 V, -8 V Operating Temperature -40 °C to +85°C Storage Temperature -65 °C to +150°C Absolute Maximum Ratings Pin Out Truth Table Note: Exceeding these parameters may cause irreversible damage. V1 V2 V3 V4 V5 V6 V7 V8 Attenuation 2 dB 4 dB 8 dB 16 dB J1–J2 -5 0 -5 0 -5 0 -5 0 Reference I.L. 0 -5 -5 0 -5 0 -5 0 2 dB -5 0 0 -5 -5 0 -5 0 4 dB - 50- 50 0- 5 - 5 0 8 d B -5 0 -5 0 -5 0 0 -5 16 dB 0 -5 0 -5 0 -5 0 -5 30 dB