General Description

The DS1843 is a sample-and-hold circuit useful for capturing fast signals where board space is constrained. It includes a differential, high-speed switched capacitor input sample stage, offset nulling circuitry, and an output buffer. The DS1843 is optimized for use in optical line transmission (OLT) systems for burst-mode RSSI measurement in conjunction with an external sense resistor.

Features

♦ Fast Sample Time < 300ns

♦ Hold Time > 100µs

♦ Low Input Offset

♦ Buffered Output

♦ Small, 8-Pin µDFN (2mm x 2mm) Pb-Free Package

Applications

    Gigabit Passive Optical Network (GPON) OLT

    Gigabit Ethernet Passive Optical Network (GEPON) OLT

    GPON Optical Network Unit

    Sample and Hold