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F1975

6-Bit 0.5dB, 75Ω, Glitch-Free Digital Step Attenuator

Datasheet

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  • 5MHz to 3000MHz frequency range
  • Glitch-Free™ low transient overshoot
  • Low insertion loss < 1.2dB at 1GHz
  • Excellent linearity +64 dBm IIP3
  • Attenuation step error 0.1dB at 1GHz
  • Serial and Parallel interface 31.5dB range
  • Low spurious design
  • 3V/5V supply, 1.8V/3.3V control logic
  • Fast settling time
  • Class 2 JEDEC ESD (2kV HBM)
  • 4mm x 4mm 20-VFQFPN package

The F1975 Digital-Step-Attenuator (DSA) featuring Glitch-Free™ technology improves system reliability and settling time. The device has an attenuation range of 31.5 dB with excellent accuracy and very low distortion and insertion loss.

  • CATV infrastructure
  • CATV set-top boxes
  • CATV satellite modems
  • Data network equipment
  • Fiber networks

Design & Development (Boards and Kit)

Board Image

Evaluation Board for F1975, 6-bit, 75Ω, Digital Step Attenuator

The F1975EVBI is a fully populated evaluation board which allows the customer to easily evaluate the device. Attenuation may be set using either the parallel control input or its serial control input (through external connection and control). A dip switch on the evaluation board allows one to set the attenuation state without off-board connections to the control inputs.

The F1975EVS is a complete hardware and software solution that allows customers to digitally control the device with the USB output on a computer.  The kit includes the F1975EVBI 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 product web page.

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Part Numbers

F1975NCGI

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F1975NCGI8

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