XRT7295AT Datasheet PDF | Exar Corporation

Exar Corporation XRT7295AT

The XRT7295AT DS3/SONET STS-1 integrated line receiver is a fully integrated receive interface that terminates a bipolar DS3 (44.736Mbps) or Sonet STS-1 (51.84Mbps) signal transmitted over coaxial cable. The device also provides the functions of receive equalization (optional), automatic-gain control (AGC), clock-recovery and data retiming, loss-of-signal and loss-of-frequency-lock detection. The digital system interface is dual-rail, with received positive and negative 1s appearing as unipolar digital signals on separate output leads.

Part No.	XRT7295AT
Datasheet	XRT7295AT Download
Manufacturer	Exar Corporation
Description	DS3/Sonet STS-1 Integrated Line Receiver
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FEATURES

D Fully Integrated Receive Interface for DS3 and STS-1 Rate Signals D Integrated Equalization (Optional) and Timing Recovery D Loss-of-Signal and Loss-of-Lock Alarms D Variable Input Sensitivity Control D 5V Power Supply D Pin Compatible with XRT7295AE and XRT7295AC D Companion Device to T7296 Transmitter

APPLICATIONS

D Interface to DS-3 Networks D Digital Cross-Connect Systems D CSU/DSU Equipment D PCM Test Equipment D Fiber Optic Terminals

GENERAL DESCRIPTION

(See Figure 13). The on-chip equalizer is designed for cable distances of 0 to 450ft. from the cross-connect frame to the device. The receive input has a variable input sensitivity control, providing three different sensitivity ORDERING INFORMATION Operating Temperature Range -40°C to + 85°C settings, to adapt longer cables. High input sensitivity allows for significant amounts of flat loss within the system. Figure 1 shows the block diagram of the device. The XRT7295AT device is manufactured using linear CMOS technology.