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F1950

7-Bit 0.25dB Glitch-Free Digital Step Attenuator

Product Details

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  • Glitch-Free, < 0.6dB transient overshoot
  • 150MHz to 5000MHz frequency range
  • Spurious free design
  • 3V to 5V supply
  • Attenuation error < 0.3dB at 2GHz
  • Low insertion loss < 1.3dB at 2GHz
  • Excellent linearity +65dBm IP3I
  • Fast settling time, < 400nsec
  • Class 2 JEDEC ESD (> 2kV HBM)
  • Serial and parallel interface 31.75dB range
  • 4mm x 4mm thin VFQPFN 24-pin package

The F1950 Digital Step Attenuator (DSA) featuring Glitch-Free™ technology improves system reliability and settling time. It has an attenuation range of 31.75dB 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

F1950 Datasheet

pdf | 2.15 MB
Model - S-parameter

2025-04-19

F1950 S-Parameters

zip | 2.17 MB
Application Note

2025-04-19

AT0069 - F1950 Intermodulation Product at 3.5 GHz

pdf | 294.43 KB

Design & Development (Boards and Kit)

Board Image

Evaluation Board for F1950 7-bit Digital Step Attenuator

The F1950EVBI is a fully populated evaluation board which allows the customer to easily evaluate the F1950 digital step attenuator. Attenuation may be set using either the F1950’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 F1950EVS is a complete hardware and software solution that allows customers to digitally control the F1950EVBI with the USB output on a computer.  The kit includes the F1950EVBI board, as well as a USB Digital Control Board and interface cables. The software, guides , and instructional videos are available for download/viewing on the page.

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Part Numbers (2)

F1950NBGI

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F1950NBGI8

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