Datasheet > DS1856B-M50+R

DS1856B-M50+R

更新时间： 2024-01-14 17:58:50

品牌	Logo	应用领域
美信 - MAXIM		监视器
页数	文件大小	规格书
28页	774K
描述
Dual, Temperature-Controlled Resistors with Calibrated Monitors and Password Protection

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DS1856B-M50+R 数据手册

19-6395; Rev 0; 7/12

Dual, Temperature-Controlled Resistors with

Calibrated Monitors and Password Protection

DS1856M

General Description

Features

The DS1856M dual, temperature-controlled, nonvolatile

(NV) variable resistors with three monitors consists of

two 256-position, linear, variable resistors; three analog

monitor inputs (MON1, MON2, MON3); and a direct-to-

digital temperature sensor. The device provides an

ideal method for setting and temperature-compensating

bias voltages and currents in control applications using

minimal circuitry. The variable resistor settings are

stored in EEPROM memory and can be accessed over

the 2-wire serial bus.

♦ SFF-8472 Compatible

♦ 13-Bit ADC

♦ Two Linear, 256-Position, Nonvolatile

Temperature-Controlled Variable Resistors with

2°C Resolution

♦ Three Levels of Security

♦ Access to Monitoring and ID Information

Configurable with Separate Device Addresses

The DS1856M includes 128 bytes of EEPROM memory

at A2h slave address, Table 00/01. The DS1856M also

includes three-levels of password protection. The

DS1856-01 includes 256 bytes of A0h EEPROM memo-

ry. The DS1856B-M50+ and DS1856E-M50+ are drop-

in replacements for the DS1856B-050+ and

DS1866E-050+, respectively. The enhancements

include 256 bytes of EEPROM at A0h; selectable

MON2, MON3 references; and a 13-bit ADC. These are

backward compatible by default with the

DS1856B-050+/DS1856E-050+.

♦ 2-Wire Serial Interface

♦ Two Buffers with TTL/CMOS-Compatible Inputs

and Open-Drain Outputs

♦ Operates from a 3.3V or 5V Supply

♦ -40°C to +95°C Operating Temperature Range

Typical Operating Circuit

Applications

= 3.3V

Optical Transceivers

4.7kΩ

2-WIRE

4.7kΩ

DECOUPLING

CAPACITOR

0.1μF

Optical Transponders

Instrumentation and Industrial Controls

RF Power Amps

SDA

TO LASER BIAS

CONTROL

INTERFACE

SCL

OUT1

IN1

Diagnostic Monitoring

TO LASER

MODULATION

CONTROL

Tx-FAULT

DS1856M

OUT2

LOS

Rx POWER*

IN2

MON3

MON2

MON1

Ordering Information appears at end of data sheet.

Tx POWER*

Tx BIAS*

DIAGNOSTIC

INPUTS

N.C.

GND

*SATISFIES SFF-8472 COMPATIBILITY

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.

12 3 4 5 6 7...28

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与DS1856B-M50+R相关器件

型号	品牌	获取价格	描述	数据表
DS1856B-M50+T	MAXIM	获取价格	Dual, Temperature-Controlled Resistors with Calibrated Monitors and Password Protection
DS1856E-002	MAXIM	获取价格	Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Pr
DS1856E-002/R	MAXIM	获取价格	Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Pr
DS1856E-002/T	MAXIM	获取价格	Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Pr
DS1856E-002/T&R	MAXIM	获取价格	Digital Potentiometer, 2 Func, 10000ohm, 2-wire Serial Control Interface, 256 Positions, P
DS1856E-002+	MAXIM	获取价格	Digital Potentiometer, 2 Func, 10000ohm, 2-wire Serial Control Interface, 256 Positions, P
DS1856E-002+T&R	MAXIM	获取价格	Digital Potentiometer, 2 Func, 10000ohm, 2-wire Serial Control Interface, 256 Positions, P
DS1856E-002R	MAXIM	获取价格	Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Pr
DS1856E-002T	MAXIM	获取价格	Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Pr
DS1856E-020	MAXIM	获取价格	Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Pr

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