F1951 Datasheet Text
DESCRIPTION
This document describes the specification for the F1951 Digital Step Attenuator. The F1951 is part of a family of Glitch-FreeTM DSAs optimized for the demanding requirements of munications Infrastructure. These devices are offered in a pact 4x4 QFN package with 50 Ω impedances for ease of integration into the radio system.
PETITIVE ADVANTAGE
Digital step attenuators are used in Receivers and Transmitters to provide gain control. The F1951 is a 6bit step attenuator optimized for these demanding applications. The silicon design has very low insertion loss and low distortion (+65 dBm IP3I.). The device has pinpoint accuracy and settles to final attenuation value within 400 nsec. Most importantly, the F1951 includes Renesas’ Glitch-FreeTM technology which results in less than 0.6 dB of overshoot ringing during MSB transitions. This is in stark contrast to peting DSAs that glitch as much as 10 dB during MSB transitions (see p.10).
- Lowest insertion loss for best SNR
- Glitch-FreeTM when transitioning
- won’t damage PA or ADC
- Extremely accurate with low distortion
Glitch-FreeTTMM
APPLICATIONS
- Base Station 2G, 3G, 4G, TDD radiocards
- Repeaters and E911 systems
- Digital Pre-Distortion
- Point to Point Infrastructure
- Public Safety Infrastructure
- WIMAX Receivers and Transmitters
- Military Systems, JTRS radios
- RFID handheld and portable readers
- Cable Infrastructure
PART# MATRIX
Part# F1951 F1950 F1952
Freq range (MHz)
100
- 5000
150
- 5000
100
- 4000
Resolution / Range (dB) 0.50 / 31.5
0.25 / 31.5...
