0.5dB LSB 5-Bit Digital Attenuator SMT, 0.7 - 3.8 GHz

The HMC305ALP4(E) is a broadband 5-bit positive control GaAs IC digital attenuator with CMOS compatible serial-to-parallel drivers packaged in leadless QFN 4x4 mm SMT package. Covering 0.7 to 3.8 GHz, the insertion loss is typically less than 1.5 to 2 dB. The attenuator bit values are 0.5 (LSB), 1, 2, 4, and 8 dB for a total attenuation of 15.5 dB. Attenuation accuracy is excellent at ±0.25 dB typical with an IIP3 of up to +52 dBm. Five bit serial control words are used to select each attenuation state. A single Vcc bias of +3V to +5V applied through an external 5 kOhm resistor is required.

The HMC305ALP4(E) is a replacement for the HMC305LP4(E).

Applications

* Cellular/3G Infrastructure

* Fixed Wireless, WiMax & WiBro

* Test Instrumentation

* 0.5 dB LSB Steps to 15.5 dB

* CMOS Compatible Serial Data Interface

* SPI Compatible Serial Output

* ±0.3 dB Typical Bit Error