AT-267

Digital Attenuator, 1 Bit, 15 dB Step DC - 2.0 GHz V 2.00 AT-267 Features     Functional Schematic V2 PIN 5 Single 15 dB Step Low Loss, 0.3 dB Typical @ 900 MHz 2.7 to 5.0 Volt Operation Insertion Loss, Attenuation insensitive to Control Voltage  Low Cost SOT-25 Plastic Package  Tape and Reel Packaging Available V1 Description M/A-COM’s AT-267 is a 1 bit, 15 dB step GaAs MMIC digital attenuator in a low cost SOT-25 5 lead surface mount plastic package. The AT-267 is ideally suited for use where high accuracy, very low power consumption and low intermodulation products are required. Typical applications include wireless handsets, base stations, wireless LAN equipment, GPS receivers and any RF applications with automatic gain/level control circuits. The AT-267 is fabricated as a monolithic GaAs integrated circuit using a proven self-aligned gate process. The process features full chip passivation for performance and reliability. PIN 1 RF1 GND RF2 Positive Control Voltage V2 5 V1 4 Truth Table 1, 2, 3 Mode (Control) Positive1 Postitive/ Negative1,2 Negative3 V1 0 ± 0.2 V +2.5 V to +5 V -Vc ± 0.2 V +Vc 0 ± 0.2 V -2.5 V to -5 V V2 +2.5 V to +5 V 0 ± 0.2 V +Vc -Vc ± 0.2 V -2.5 V to -5 V 0 ± 0.2 V Atten 15 dB IL 15 dB IL IL 15 dB 1 39 pF 39 pF 2 3 39 pF RF1 GND RF2 1. External DC blocking capacitors are required as noted* 2. |-Vc|+ Vc  8 V 3. If negative control is used, DC blocking capacitors are not required on RF Ports and Ground. Absolute Maximum Ratings1...