SKY12343-364LF

0.01 – 4.0 GHz Seven-Bit Digital Attenuator with Serial and Parallel Drivers


Please note: SKY12343-364LF is being discontinued and is not recommended for new designs.



The SKY12343-364LF is a GaAs broadband seven-bit pHEMT digital attenuator with a 0.25 dB Least Significant Bit (LSB). A TTL/CMOS-compatible, dual mode serial or parallel programming interface (SPI) controller is integrated into the device.

The SKY12343-364LF attenuator features low insertion loss, excellent attenuation accuracy, a 31.75 dB attenuation range, and high linearity performance. The device is an ideal choice for a wide variety of 3G and 4G cellular infrastructure applications.

Attenuation is controlled by an SPI controller. Depending on the SPI sequence applied to the DATA_IN pin, the attenuation state between the RF1 and RF2 pins is programmed between a low insertion loss state or up to 31.75 dB. The V1 through V7 DC control pins determine the attenuation state if parallel mode is enabled.

Specifications

Product LifecycleLast Time Buy
Control Bits/ Interface Parallel/Serial7/P
Frequency (GHz) Min.0.01
Frequency (GHz) Max.4
LSB Attenuation (dB)0.25
Attenuation Range (dB)31.75
Typ. IL (dB)1.8-1.9
Typ. IIP3 (dBm)50
Typ. IP1 dB (dBm)35
PackageQFN, 32L
Package (mm)5 x 5 x 0.9

Features

  • Broadband operation: 0.01 to 4.0 GHz
  • Attenuation range: 31.75 dB with 0.25 dB LSB
  • TTL/CMOS-compatible serial, parallel, or latched parallel control interface
  • Single supply voltage: +3.3 or +5 V
  • Small, QFN (32-pin, 5 x 5 mm) Pb-free package (MSL1, 260 °C per JEDEC J-STD-020)

Product Documents