GaAs IC 4 Bit Digital Attenuator 1 dB LSB DC–2 GHz AA210-25 (Previously AD210-25)* Features ■ Attenuation in 1 dB Steps to 15 dB with High Accuracy SOIC-16 0.050 (1.27 mm) BSC PIN 16 ■ Low Intermodulation Products ■ Low Cost SOIC-16 Plastic Package 0.244 (6.20 mm) 0.228 (5.80 mm) PIN 1 INDICATOR ■ Low DC Power Consumption 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) 0.068 (1.73 mm) MAX. 0.016 MAX. (0.41 mm) x 45˚ CHAMFER 0.049 (1.24 mm) 0.016 (0.41 mm) 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 Frequency2 Loss3 DC–0.1 DC–0.5 DC–1.0 DC–2.0 Min. GHz GHz GHz GHz Attenuation Range Typ. Max. Unit 0.9 1.1 1.3 2.1 1.2 1.5 1.8 2.5 dB dB dB dB 15 Attenuation Accuracy4 DC–1.0 GHz DC–2.0 GHz VSWR (I/O) dB ± (0.25 + 3% of Attenuation Setting in dB) ± (0.4 + 5% of Attenuation Setting in dB) DC–1.0 GHz DC–2.0 GHz 1.3:1 1.6:1 1.4:1 1.8:1 Typ. Max. dB dB Operating Characteristics at 25°C (0, -5 V) Parameter1 Switching Characteristics5 Condition Frequency Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru Input Power for 1 dB Compression Unit 15 25 25 ns ns mV 0.50–2.0 GHz 0.05 GHz +28 +22 dBm dBm 0.50–2.0 GHz 0.05 GHz +48 +38 dBm dBm Intermodulation Intercept Point (IP3) For Two-tone Input Power +5 dBm Control Voltages VLow = 0 to -0.2 V @ 10 µA Typ. VHigh = -5 @ 10 µA Typ. to -8 V @ 200 µA Typ. 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. Min. 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 [email protected] • 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 3 dB 1.6 2 4 dB State 1 dB State 8 dB State 1.4 2 dB State 1 1.2 15 dB State 0 0 0.5 1 1.5 2.0 Insertion Loss 1.0 0 0.5 1 1.5 2.0 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency VSWR vs. Frequency 18 Absolute Maximum Ratings Characteristic dB 12 6 Value RF Input Power 1.5 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 Note: Exceeding these parameters may cause irreversible damage. 0 0 0.5 1.0 1.5 2.0 Pin Out Frequency (GHz) J1 GND GND GND GND GND GND Attenuation vs. Frequency (All States) Truth Table V1 V2 1 dB 2 V3 V4 2 dB 16 15 8 dB V5 V6 4 dB V7 V8 8 dB 13 14 4 dB 12 11 2 dB J2 10 9 1 dB Attenuation J1–J2 -5 0 -5 0 -5 0 -5 0 Reference I. L. 1 2 3 4 5 6 7 8 0 -5 -5 0 -5 0 -5 0 1 dB V8 V7 V6 V5 V4 V3 V2 V1 -5 0 0 -5 -5 0 -5 0 2 dB -5 0 -5 0 0 -5 -5 0 4 dB -5 0 -5 0 -5 0 0 -5 8 dB 0 -5 0 -5 0 -5 0 -5 15 dB Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 10/99A