Rev. 10/25/00

SPX4040

Precision Micropower 2.5V Shunt Voltage Reference

FEATURES

APPLICATIONS

• Low temperature coefficient 100 ppm/°C

• Constant Current Source

• Operating current range 100µA to 15 mA

• Digital Voltmeter

• Low power, 250 mW @ Iin=100 mA

• Power Supply Monitor

• Two terminal "Zener" operation

• Precision Regulators

• Small package: SOT - 23, TO-92, and SO-8

• Battery-Powered Equipment

• Fixed reverse breakdown voltage 2.5 Volt

• Instrumentation

• No output capacitance required

• Automotive Electronics

• Similar replacement for LM4040

• Data Acquisition Systems

• Energy Management

PRODUCT DESCRIPTION

The SPX4040 is a two-terminal, temperature compensated, band-gap voltage reference, which provides a fixed 2.5V output for input

currents between 100

µA to 15mA. The bandgap voltage (2.5V) is independently trimmed from the output voltage to achieve a very

low tempco. This trimming technique process gives a very stable device over the full temperature range (A grade 50 ppm/

°C). The

SPX4040 is available in the sub-miniature (3mm

× 1.3mm) SOT-23, SO-8 surface mount package, or TO-92 package. The operating

temperature is -40°C to 85°C.

The SPX4040 advanced design eliminates the need for an external stabilized capacitor while insuring stability with any capacitive

load, making them easy to use.

PIN CONNECTIONS

Top View

2

1

3

4

8

7

6

5

8-Pin Surface Mount (S)

SOT-23-3 (M)

Top View

2

3

+

-

1

Bottom View

TO-92 (N)

1

3

2

N/C

N/C

N/C

-

N/C

N/C

N/C

+