DS1843 Datasheet | Maxim Integrated

19-4539; Rev 1; 2/12 Fast Sample-and-Hold Circuit 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. Applications Gigabit Passive Optical Network (GPON) OLT Gigabit Ethernet Passive Optical Network (GEPON) OLT GPON Optical Network Unit Sample and Hold Features o Fast Sample Time < 300ns o Hold Time > 100µs o Low Input Offset o...