AA220-25

GaAs IC 4 Bit Digital Attenuator 2 dB LSB DC–2 GHz AA220-25 (Previously AD220-25)* 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 SOIC-16 PIN 16 0.050 (1.27 mm) BSC PIN 1 INDICATOR 0.244 (6.20 mm) 0.228 (5.80 mm) 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. 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) Electrical Specifications at 25°C (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. 1.2 1.4 1.5 2.0 30 DC–1.0 GHz DC–2.0 GHz VSWR (I/O) DC–1.0 GHz DC–2.0 GHz ± (0.2 + 3% of Attenuation Setting in dB) ± (0.3 + 3% of Attenuation Setting in dB) 1.4:1 1.6:1 1.6:1 2.0:1 Max. 1.4 1.7 1.8 2.5 Unit dB dB dB dB dB dB dB Attenuation Range Attenuation Accuracy4 Operating Characteristics at 25°C (0, -5 V) Parameter 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 @ 20 µA Max. VHigh = -5 V @ 50 µA Typ. to -8 V @ 200 µA Max. 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 Specifications subject to change without notice. 10/99A 1 GaAs IC 4 Bit Digital Attenuator 2 dB LSB DC–2 GHz AA220-25 Typical Performance Data (0, -5 V) 4 2.0 16 dB State 3 1.8 2 dB State 1.6 dB 2 dB 4 dB State 1.4 1 1.2 Insertion Loss 0 0 0.5 1 1.5 2.0 1.0 0 0.5 1 1.5 2.0 30 dB State 8 dB State Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency 32 VSWR vs. Frequency Absolute Maximum Ratings Characteristic Value 2 W > 500 MHz 0/-8 V 0.5 W @ 50 MHz 0/-8 V +0.2 V, -8 V -40°C to +85°C -65°C to +150°C RF Input Power Control Voltage Operating Temperature Storage Temperature 24 dB 16 8 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 J2 16 15 14 13 12 11 10 9 Frequency (GHz) Attenuation vs. Frequency Truth Table V1 -5 0 -5 -5 -5 0 V2 0 -5 0 0 0 -5 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 16 dB Attenuation J1–J2 Reference I.L. 2 dB 4 dB 8 dB 16 dB 30 dB 16 dB 8 dB 4 dB 2 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