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F1951

6-Bit 0.50dB Glitch-Free Digital Step Attenuator

Product Details

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  • Glitch-Free, < 0.6dB transient overshoot
  • 100MHz to 5000MHz frequency range
  • Spurious free design
  • 3V to 5V supply
  • Attenuation error < 0.2dB at 2GHz
  • Low insertion loss < 1.2dB at 2GHz
  • Excellent linearity +68dBm IP3I
  • Fast settling time, < 400nsec
  • Class 2 JEDEC ESD (> 2kV HBM)
  • Serial interface 31.5dB range
  • 4mm x 4mm thin VFQFPN 24-pin package

The F1951 Digital Step Attenuator (DSA) featuring Glitch-Free™ technology improves system reliability and settling time. It has an attenuation range of 31.5dB with excellent accuracy and very low distortion.

  • Base Station 2G, 3G, 4G, TDD radio cards
  • 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

Product Documents

Datasheet

2025-04-19

F1951 Datasheet

pdf | 2.48 MB
Model - S-parameter

2025-04-19

F1951 S-Parameters

zip | 1.68 MB

Design & Development (Boards and Kit)

Board Image

Evaluation Board for F1951 6-bit Digital Step Attenuator

The F1951EVBI is a fully populated evaluation board which allows the customer to easily evaluate the F1951 digital step attenuator. Attenuation may be set using either the F1951’s parallel control input or its serial control input. A dip switch on the evaluation board allows one to set the attenuation state without off-board connections to the control inputs.

The F1951EVS is a complete hardware and software solution that allows customers to digitally control the F1951EVBI with the USB output on a computer.  The kit includes the F1951EVBI board, as well as a USB Digital Control Board and interface cables. The software, guides , and instructional videos are available for download/viewing on this page.

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Part Numbers (2)

F1951NBGI

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F1951NBGI8

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