RFMW
Part number F1953NCGI8 Product Type RF Attenuator from Manufacturer Axiro Semiconductor Inc.

Status: Standard | Data Sheet: pdf link image   | RoHS Compliance: Rohs Compliant

The IDT F1953 is part of a family of Glitch-FreeTM DSAs optimized for the demanding requirements of communications Infrastructure. These devices are offered in a compact 4x4 QFN package with 50 Ω impedances for ease of integration.
Digital step attenuators are used in Receivers and Transmitters to provide gain control. The IDT F1953 is a 6-bit step attenuator optimized for these demanding applications. The silicon design has very low insertion loss and low distortion (> +60 dBm IP3I.) The device has pinpoint accuracy and settles to final attenuation value within 400 ns. Most importantly, the F1953 includes IDT’s Glitch-FreeTM technology which results in less than 0.5 dB of overshoot ringing during MSB transitions. This is in stark contrast to competing DSAs that glitch as much as 10 dB.

  • Lowest insertion loss for best SNR
  • Glitch-FreeTM when transitioning – won’t damage PA or ADC
  • Extremely accurate with low distortion

Features:

  • Glitch-FreeTM, < 0.6 dB transient overshoot
  • Spurious Free Design
  • 2.7 to 3.6 V supply
  • Attenuation Error < 0.5 dB @ 2 GHz
  • Low Insertion Loss < 1.4 dB @ 2 GHz
  • Excellent Linearity >+60 dBm IP3I
  • Fast settling time, < 400 ns
  • Serial or Parallel Interface 31.5 dB Range
  • Stable Integral Non-Linearity over temperature
  • Low Power Consumption < 200 uA
  • Integrated DC blocking capacitors
  • Drop-In replacement
  • 4x4 mm Thin QFN 20 pin package
Part Number:
F1953NCGI8
Manufacturer:
Axiro Semiconductor Inc.
Frequency Min:
400 MHz
Frequency Max:
4000 MHz
Bits:
6
Attn Range:
31.5 dB
Attenuation Step:
0.5 dB
Impedance:
50 Ohms
Insertion Loss Min:
1.4 dB
IIP3:
63 dBm
Package:
20L QFN
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