SKY12343-364LF

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

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.

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

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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. IP_{1 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)

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