SKY12339-350LF 0.4-3.0 GHz 5-Bit Digital Attenuator (1 dB LSB)

The SKY12339-350LF is a monolithic, GaAs binary-weighted five-bit single positive control voltage digital attenuator. The device operates from 0.4 to 3.0 GHz. DC power consumption is very low, typically 1.5 mA, with a supply voltage of 5 V. The SKY12339-350LF has an LSB of 1 dB and total attenuation of 31 dB. The two RF ports are bilateral; each can be used as the RF input or the RF output. An external supply voltage of 4.5 to 5.5 V is required. The SKY12339-350LF is comprised of five cascaded fixed attenuators, each of which has a shunt bypass switch. Beginning at the 1 dB LSB, each succeeding fixed attenuator produces twice the attenuation of the preceding stage. The state of each bypass switch is controlled by the logic level voltage applied to the associated control voltage input. A logic high voltage closes the associated switch, which bypasses that fixed attenuator stage; a logic low opens the switch to force the input signal to that stage through the associated attenuator.

技术特性

Broadband operation: 0.4 to 3.0 GHz
Attenuation: 31 dB
LSB attenuation: 1 dB
Low insertion loss: 1.2 dB @ 900 MHz
Positive voltage operation: 4.5 to 5.5 V
Low current consumption: 1.5 mA typical @ 5 V
Small, QFN (16-pin, 3 x 3 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

订购信息 Ordering Information

SKY12339-350LF

应用领域 APPLICATION

WiMAX, GSM, CDMA, WCDMA, WLAN, Bluetooth®, Zigbee®, and mobile radio base stations or terminal equipment
Telecommunications and instrumentation

功能框图 Functional Block Diagram

应用技术支持与电子电路设计开发资源下载	版本信息	大小
SKY12339-350LF 数据资料DataSheet下载:pdf	Rev.V2	2 页