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F1953

6-Bit 0.50dB Glitch-Free Digital Step Attenuator with Internal DC Blocks

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  • Glitch-Free, < 0.6dB transient overshoot
  • Spurious free design
  • 2.7V to 3.3V supply
  • Attenuation error < 0.5dB at 2GHz
  • Low insertion loss < 1.4dB at 2GHz
  • Excellent linearity > +63dBm IP3I
  • Fast settling time, < 400nsec
  • Class 2 JEDEC ESD (> 2kV HBM)
  • Serial or parallel interface 31.5dB range
  • Stable integral non-linearity over temperature
  • Low power consumption < 200µA
  • Integrated DC-blocking capacitors
  • Drop-in replacement
  • 4mm x 4mm thin VFQFPN 20-pin package

The F1953 digital step attenuator 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. In addition, it features internal DC-blocking capacitors to reduce the system's bill of materials (BOM).

  • 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

Design & Development (Boards and Kit)

Board Image

Evaluation Board for F1953 6-bit Digital Step Attenuator

The F1953EVBI is a fully populated evaluation board which allows the customer to easily evaluate the F1953 digital step attenuator. Attenuation may be set using either the F1953’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 F1953EVS is a complete hardware and software solution that allows customers to digitally control the F1953EVBI with the USB output on a computer.  The kit includes the F1953EVBI 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

F1953NCGI

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F1953NCGI8

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