Date: 11/05/04

SPX385-1.2 Micropower Voltage Reference

© Copyright 2004 Sipex Corporation

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FEATURES

■ Low Output Voltage ................................ 1.235V

■ Dynamic Impedance...............................1Ω max

■ Low Temperature Coefficient........30ppm/°C (typ)

■ Operating Current ........................ 10µA to 20mA

■ Extended Temperature Range .. -40°C to +85°C

■ Initial Tolerance..................................1% and 2%

■ Pin Compatible with LM185/285/385, 1.23V

Micropower Voltage Reference

SPX385-1.2

The SPX385-1.2 is a micropower 2-terminal band-gap voltage reference with a very wide

operating current range from 10µA to 20mA that provides a stable voltage. The high stability of

this device is primarily the result of the low temperature coefficient Thin Film Resistor process and

Laser Trimming of the output voltage at the wafer level.

The SPX385-1.2 is available in a TO-92, SOIC-8 and SOT-89 package with an operating

temperature range of -40°C to 85°C. A 2.5 and 5.0 volt devices are also available - SPX385-2.5,

SPX385-5.0.

®

Figure 1: Block Diagram

APPLICATIONS

■ Portable Meter Reference

■ Portable Test Instruments

■ Battery Operated Systems

■ Panel Meters

1.235V

+

-

Cathode (K)

Anode (A)

DESCRIPTION

BLOCK DIAGRAM

Now Available in Lead Free Packaging

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2

3

4

5

6

7

8

SPX385-1.2

8 Pin nSOIC

CATHODE

N/C

ANODE

N/C

N/C

N/C

N/C

N/C