AA210-25

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 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. 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 25°C (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 µA Typ. VHigh = -5 @ 10 µA Typ. to -8 V @ 200 µA 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 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 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 -40°C to +85°C -65°C to +150°C 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