器件名称: AT-267TR
功能描述: Digital Attenuator, 1 Bit, 15 dB Step DC - 2.0 GHz
文件大小: 81.46KB 共3页
简 介: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
Parame……
