text.skipToContent text.skipToNavigation


1.0 Gbps to 4.25 Gbps Rate-Selectable Limiting Amplifier


Package | PIN: RGV | 16
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $2.61
10-24 $2.35
25-99 $2.19
100-249 $1.92
250-499 $1.80
500-749 $1.53
750-999 $1.29
1000+ $1.23


  • Multirate Operation from 1 Gbps up to 4.25 Gbps
  • Loss-of-Signal Detection (LOS)
  • Two-Wire Digital Interface
  • Digitally Selectable LOS Threshold
  • Digitally Selectable Bandwidth
  • Digitally Selectable Output Voltage
  • Low Power Consumption
  • Input Offset Cancellation
  • CML Data Outputs With On-Chip, 50- Back-Termination to VCC
  • Single 3.3-V Supply
  • Surface-Mount, Small-Footprint, 4-mm × 4-mm, 16-Terminal QFN Package
    • Multirate SONET/SDH Transmission Systems
    • 4.25-Gbps, 2.125-Gbps, and 1.0625-Gbps Fibre-Channel Receivers
    • Gigabit Ethernet Receivers

Texas Instruments  ONET4291PARGVR

The ONET4291PA is a versatile, high-speed, rate-selectable limiting amplifier for multiple fiber-optic applications with data rates up to 4.25 Gbps.

The device provides a two-wire interface, which allows digital bandwidth selection, digital output amplitude selection, and digital loss of signal threshold adjust.

This device provides a gain of about 43 dB, which ensures a fully differential output swing for input signals as low as 5 mVp-p.

The ONET4291PA provides loss-of-signal detection with either digital or analog threshold adjust.

The part is available in a small-footprint, 4-mm × 4-mm, 16-terminal QFN package. It requires a single 3.3-V supply.

This power-efficient, rate-selectable limiting amplifier is characterized for operation from -40°C to 85°C ambient temperature.