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ONET4291PARGVR
1.0 Gbps to 4.25 Gbps Rate-Selectable Limiting Amplifier
www.ti.com
FEATURES
APPLICATIONS
DESCRIPTION
ONET4291PASLLS671–SEPTEMBER 2005
1-Gbps to 4.25-Gbps Rate-Selectable Limiting Amplifier CML Data Outputs With On-Chip, 50-Ω
Back-Terminationto VCC•
Multirate Operation from1 Gbps upto
4.25 Gbps •
Single 3.3-V Supply Loss-of-Signal Detection (LOS) •
Surface-Mount, Small-Footprint, 4-mm×
4-mm, 16-Terminal QFN Package•
Two-Wire Digital Interface Digitally Selectable LOS Threshold Digitally Selectable Bandwidth •
Multirate SONET/SDH Transmission Systems•
Digitally Selectable Output Voltage •
4.25-Gbps, 2.125-Gbps, and 1.0625-Gbps•
Low Power Consumption Fibre-Channel Receivers Input Offset Cancellation •
Gigabit Ethernet ReceiversThe ONET4291PAisa versatile, high-speed, rate-selectable limiting amplifier for multiple fiber-optic applications
with data ratesupto 4.25 Gbps.
The device providesa two-wire interface, which allows digital bandwidth selection, digital output amplitude
selection, and digital lossof signal threshold adjust.
This device providesa gainof about43 dB, which ensuresa fully differential output swing for input signalsas low5 mVp-p.
The ONET4291PA provides loss-of-signal detection with either digitalor analog threshold adjust.
The partis availableina small-footprint, 4-mm× 4-mm, 16-terminal QFN package.It requiresa single 3.3-V
supply.
This power-efficient, rate-selectable limiting amplifieris characterized for operation from –40°Cto 85°C ambient
temperature.
