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010202

FEATURES

§ Two temperature-controlled 8-bit Digital-to-

Analog Converters (DACs)

§ DAC settings changeable every 4°C

§ Access to temperature data and device

control through a 2-wire interface

§ Operates with +3.3V or +5V supplies

§ Packaging: 8-pin TSSOP

§ Operating temperature: -40ºC to +95ºC

§ Programming temperature: 0ºC to +70ºC

ORDERING INFORMATION

DS1851E-010

8-pin 173mil TSSOP

DS1851E-010/T&R 8-pin Tape and Reel

TSSOP

PIN ASSIGNMENTS

PIN DESCRIPTIONS

- +3.3V or +5V Power Supply

Input

GND

- Ground

SDA

- 2-Wire Serial Data

Input/Output

SCL

- 2-Wire Serial Clock Input

OutG

- DAC Output with Respect to

Ground

- Reference Input from Ground

OutV

- DAC Output with Respect to

DESCRIPTION

The DS1851 dual temperature-controlled nonvolatile (NV) DACs consists of two DACs, two EEPROM

look-up tables, and a direct-to-digital temperature sensor. Both of the DACs can be programmed with any

temperature coefficient, which means that any system temperature effects can be corrected without any

additional external devices. The DS1851 provides an ideal method for setting and temperature-

compensating bias voltages and currents in control applications using a minimal amount of external

circuitry.

The user-defined settings for both DACs are stored in two EEPROM look-up tables and can be accessed

over the industry-standard 2-wire serial bus, which consists of SDA and SCL pins. These look-up tables

can assign a unique output value to each DAC for every 4°C increment over the -40°C to +95°C range.

The output of the digital temperature sensor is also available as a 12-bit, two’s complement value over the

serial bus.

www.maxim-ic.com

DS1851

Dual Temperature-Controlled NV

Digital-to-Analog Converters

SDA

1

8

SCL

2

7

3

6

OutV

GND

4

5

OutG

8-Pin TSSOP (173mil)