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| GaAs IC 4 Bit Digital Attenuator 3 dB LSB DC-1 GHz AT001D6-25 Features s Attenuation in 3 dB Steps to 45 dB s Low DC Power Consumption s Low Cost SOIC-16 Plastic Package PIN 16 SOIC-16 0.050 (1.27 mm) BSC PIN 1 INDICATOR 0.244 (6.20 mm) 0.228 (5.80 mm) Description The AT001D6-25 is an IC FET digital attenuator consisting of four monolithic attenuators with LSB of 3 dB and a total attenuation of 45 dB with all attenuators connected. The attenuator is packaged in the plastic 16 lead surface mount package for low cost commercial cellular radio applications. 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 25C (0, -5 V) Parameter1 Insertion Loss3 Frequency2 DC-0.5 GHz DC-1.0 GHz DC-1.0 GHz Min. Typ. 2.5 3.5 Max. 3.2 4.0 Unit dB dB Attenuation Range4 10% or 0.5 dB Whichever is Greater 12% for 45 dB Attenuation 1.4:1 1.6:1 1.6:1 1.8:1 VSWR (I/O) DC-0.5 GHz DC-1.0 GHz Operating Characteristics at 25C (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 0.50-1.0 GHz 0.05 GHz For Two-tone Input Power +13 dBm 0.50-1.0 GHz 0.05 GHz Frequency Min. Typ. 10 20 20 +24 +14 +43 +32 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 A Max. VHigh = -5 V @ 50 A to -8 V at 200 A Max. 1. All measurements made in a 50 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. Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 3/99A 1 GaAs IC 4 Bit Digital Attenuator 3 dB LSB DC-1 GHz AT001D6-25 Typical Performance Data (0, -5 V) 5 4 3 +85C -40C 15 12 9 dB 2 1 0 DC 0.5 dB 6 3 0 1.0 DC 0.5 1.0 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency 45 40 35 2.5 2.2 1.9 1.6 1.3 1.0 DC 0.5 1.0 DC 3, 6, 12 dB States dB 30 25 20 0.5 1.0 Frequency (GHz) Frequency (GHz) 24, 36, 45 dB States VSWR vs. Frequency (All States) Absolute Maximum Ratings Characteristic RF Input Power Control Voltage Operating Temperature Storage Temperature JC Value 2 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 25C/W Pin Out GND GND J1 GND GND J2 16 15 14 13 12 11 GND GND 10 9 24 dB 6 dB 3 dB 12 dB Note: Exceeding these parameters may cause irreversible damage. 1 2 3 4 5 6 7 8 V8 V7 V6 V5 V4 V3 V2 V1 Truth Table V1 -5 -5 -5 0 -5 0 V2 0 0 0 -5 0 -5 V3 -5 0 -5 -5 -5 0 V4 0 -5 0 0 0 -5 V5 0 0 -5 0 0 -5 V6 6 dB -5 -5 0 -5 -5 0 0 0 0 0 -5 -5 V7 V8 -5 -5 -5 -5 0 0 12 dB 3 dB 24 dB Attenuation J1-J2 Reference I.L. 3 dB 6 dB 12 dB 24 dB 45 dB 2 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 3/99A |
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