Applications

 Cellular infrastructure

 Wireless receivers

Features

 Positive voltage operation with integrated decoder

 Broadband operation: 0.35 to 4.0 GHz

 Attenuation: 18 dB with 6 dB LSB

 Low insertion loss: 0.6 dB @ 2 GHz

 Absorptive in 50 Ω systems

 Small QFN (12-pin, 3 x 3 mm) package

(MSL1, 260 C per JEDEC J-STD-020)

Description

The SKY12355-337LF is a GaAs pHEMT two-bit digital attenuator

I/C. The device is provided in a 3 x 3 mm, 12-pin Quad Flat No-

Lead (QFN) package.

The SKY12355-337LF is particularly suited for low-cost

commercial applications for which high attenuation accuracy, low

insertion loss, and low intermodulation products are required.

A functional block diagram is shown in Figure 1. The pin

configuration and package are shown in Figure 2. Signal pin

assignments and functional pin descriptions are provided in

Table 1.