Datasheet > DS1843_12

DS1843_12

更新时间： 2022-10-27 16:19:03

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描述
Fast Sample-and-Hold Circuit

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DS1843_12 数据手册

19-4539; Rev 1; 2/12

Fast Sample-and-Hold Circuit

DS1843

General Description

Features

The DS1843 is a sample-and-hold circuit useful for cap-

turing fast signals where board space is constrained. It

includes a differential, high-speed switched capacitor

input sample stage, offset nulling circuitry, and an out-

put 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.

o Fast Sample Time < 300ns

o Hold Time > 100µs

o Low Input Offset

o Buffered Output

o 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

Ordering Information

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

8 µDFN

DS1843D+

DS1843D+TRL

8 µDFN

Sample and Hold

+Denotes a lead(Pb)-free/RoHS-compliant package.

TRL = Tape and reel.

Typical Operating Circuit

SDA

I C

DS1842/

MAX4007

SCL

INTERFACE

MAIN MEMORY

EEPROM/SRAM

3.3V

A/D CONFIG/RESULTS,

SYSTEM STATUS BITS,

ALARMS/WARNINGS,

LOOKUP TABLES,

MON1

BMD

DS1843

INP

OUTP

MON3P

USER MEMORY

MON3N

MON4

OUTN

MOD

DAC

12-BIT

ADC

TEMP

BIAS

DAC

SENSOR

INN

3.3V

SEN

DEN

SEN

STROBE

CONTROL

LOGIC

STROBE

GND

CONTROLLER

Pin Configuration appears at end of data sheet.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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