DS1857 Datasheet PDF | Maxim Integrated

Maxim Integrated DS1857

The DS1857 dual temperature-controlled nonvolatile (NV) variable resistors with external temperature input and monitors consists of two 50kΩ 256-position linear variable resistors, two analog monitor inputs (MON1, MON2), and an external temperature sensor input. 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.

Part No.	DS1857
Datasheet	DS1857 Download
Manufacturer	Maxim Integrated
Description	Dual Temperature-Controlled Resistors with External Temperature Input and Monitors
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GENERAL DESCRIPTION

FEATURES

♦ Four Total Monitored Channels (Temperature, VCC, MON1, MON2) ♦ Two External Analog Inputs (MON1, MON2) ♦ Interface to External Temperature Sensor (LM50) ♦ Two 50kΩ, Linear, 256-Position, Nonvolatile Temperature-Controlled Variable Resistors ♦ Resistor Settings Changeable Every 2°C ♦ Access to Monitoring and ID Information Configurable with Separate Device Addresses ♦ Resistor Disable (Open-Circuit) Function ♦ 2-Wire Serial Interface ♦ Three Address Lines for Multiple Devices ♦ Operates from a 3.3V or 5V Supply ♦ SFF-8472 Compatible DS1857

APPLICATIONS

Optical Transceivers Optical Transponders Instrumentation and Industrial Controls RF Power Amps Diagnostic Monitoring Ordering Information PART DS1857E-050 DS1857E-050/T&R DS1857B-050 TEMP RANGE PIN-PACKAGE -40°C to +95°C 16 TSSOP -40°C to +95°C 16 TSSOP (Tape-and-Reel) -40°C to +95°C 16 Ball CSBGA Typical Operating Circuit VCC VCC = 3.3V 4.7kΩ 2-WIRE INTERFACE VCC 4.7kΩ 1 2 3 4 5 SDA SCL A0** A1** A2** VCC...