IDT推出无干扰RF数字步进衰减器

Integrated Device Technology, Inc. announced the industry’s first Glitch-Free radio frequency (RF) digital step attenuator (DSA) with integrated blocking capacitors. The new DSA is a true drop-in replacement for the most popular DSA footprint, allowing customers to reduce the bill-of-materials (BOM), optimize board area, and improve performance in base station and industrial applications.

The IDTF1953 is a 6-bit RF DSA optimized for the demanding requirements of base transceiver station (BTS) receive, transmit, and digital pre-distortion (DPD) paths. The device is pin- and control-compatible with competitors’ offerings, but integrates blocking capacitors and innovative design techniques to reduce the BOM and improve performance. Built on IDT’s Glitch-Free technology platform, the IDTF1953 reduces transient overshoot, or “glitches”, during most significant bit (MSB) transitions by up to 95 percent in multi-standard 4G, 3G, and 2G cellular base station and industrial applications. IDT’s leading DSA solutions enable customers to simplify their software interface, improve reliability, and prevent damage to expensive sub-assemblies, such as power amplifiers.

Features

Glitch-Free, < 0.6 dB transient overshoot
Spurious Free Design
2.7 to 3.3 V supply
Attenuation Error < 0.5 dB at 2 GHz
Low Insertion Loss < 1.4 dB at 2 GHz
Excellent Linearity >+60 dBm IP3I
Fast settling time, < 400 nsec
Class 2 JEDEC ESD (> 2kV HBM)
Serial or Parallel Interface 31.5 dB Range
Stable Integral Non-Linearity over temperature
Low Power Consumption < 200 uA
Integrated DC blocking capacitors
Drop-In replacement
4×4 mm Thin QFN 20 pin package