LM4040AIZ-5.0 National Semiconductor, LM4040AIZ-5.0 Datasheet

LM4040AIZ-5.0

Manufacturer Part Number

LM4040AIZ-5.0

Description

Precision Micropower Shunt Voltage Reference

Manufacturer

National Semiconductor

Datasheet

1.LM4040AIZ-5.0.pdf (24 pages)

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LM4040

Precision Micropower Shunt Voltage Reference

General Description

Ideal for space critical applications, the LM4040 precision

voltage reference is available in the sub-miniature (3 mm x

1.3 mm) SOT-23 surface-mount package. The LM4040’s ad-

vanced design eliminates the need for an external stabilizing

capacitor while ensuring stability with any capacitive load,

thus making the LM4040 easy to use. Further reducing de-

sign effort is the availability of several fixed reverse break-

down voltages: 2.500V, 4.096V, 5.000V, 8.192V, and

10.000V. The minimum operating current increases from

60 µA for the LM4040-2.5 to 100 µA for the LM4040-10.0. All

versions have a maximum operating current of 15 mA.

The LM4040 utilizes fuse and zener-zap reverse breakdown

voltage trim during wafer sort to ensure that the prime parts

have an accuracy of better than

Bandgap reference temperature drift curvature correction

and low dynamic impedance ensure stable reverse break-

down voltage accuracy over a wide range of operating tem-

peratures and currents.

Also available is the LM4041 with two reverse breakdown

voltage versions: adjustable and 1.2V. Please see the

LM4041 data sheet.

Features

n Small packages: SOT-23, TO-92

n No output capacitor required

Connection Diagrams

*This pin must be left floating or connected to pin 2.

(JEDEC Registration TO-236AB)

See NS Package Number M03B

Top View

SOT-23

DS011323-1

0.1% (A grade) at 25˚C.

DS011323

n Tolerates capacitive loads

n Fixed reverse breakdown voltages of 2.500V, 4.096V,

Key Specifications (LM4040-2.5)

Applications

n Portable, Battery-Powered Equipment

n Data Acquisition Systems

n Instrumentation

n Process Control

n Energy Management

n Product Testing

n Automotive

n Precision Audio Components

n Output voltage tolerance

n Low output noise

n Wide operating current range

n Industrial temperature range

n Extended temperature range

n Low temperature coefficient

5.000V, 8.192V, and 10.000V

(A grade, 25˚C)

(10 Hz to 10 kHz)

See NS Package Number Z03A

Bottom View

TO-92

DS011323-3

100 ppm/˚C (max)

−40˚C to +125˚C

60 µA to 15 mA

September 1998

−40˚C to +85˚C

35 µV

www.national.com

0.1% (max)

rms

(typ)

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