Texas Instruments LM4051-N Handleiding

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LM4051-N Precision Micropower Shunt Voltage Reference

1 Features

•No output capacitor required

•Tolerates capacitive loads

•Reverse breakdown voltage options of 1.225V and

adjustable

•Key specifications:

–Output voltage tolerance (A Grade, 25 C) ±

0.1% (maximum)

–Output noise (10Hz to 10kHz) 20μVrms

–Operating current range: 60μA to 12mA

–Industrial temp. range: −40 C to +85 C

–Extended temp. range: −40 C to +125 C

–Temperature coefficient: 50ppm/ C (maximum)

2 Applications

•Battery-Powered Equipment

•Data-Acquisition Systems

•Instrumentation and Test Equipment

•Process Control

•Energy Management/Metering

•Automotive Electronics

•Precision Audio

•Base Stations

•Battery Chargers

•Medical Equipment

•Communication

R

S

V

DD

V

OUT

= 1.225 V

Cathode

LM4051-1.2

Anode

1.2 V

REF

Simplified Schematic

3 Description

Designed for space critical applications, the LM4051-

N precision voltage reference is available in the

sub-miniature (3mm x 1.30mm) SOT-23 surface

mount package. The LM4051-N’s advanced design

eliminates the need for an external stabilizing

capacitor while maintaining stability with any

capacitive load, thus making the LM4051-N easy to

use. Further reducing design effort is the availability

of a fixed (1.225V) and adjustable reverse breakdown

voltage. The minimum operating current is 60μA for

the LM4051-1.2 and the LM4051-ADJ. Both versions

have a maximum operating current of 12mA.

The LM4051-N comes in three grades (A, B, and C).

The best grade devices (A) have an initial accuracy of

0.1%, while the B-grade have 0.2% and the C-grade

0.5%, all with a tempco of 50 ppm/ C designed for

−40°C to 125°C.

The LM4051-N utilizes fuse and zener-zap trim of

reference voltage during wafer sort to ensure that the

prime parts have an accuracy of better than ± 0.1% (A

grade) at 25°C.

Device Information

PART NUMBERPACKAGE

(1)

BODY SIZE (NOM)

(2)

LM4051-NSOT-23 (3)3.00mm x 1.30mm

(1)For all available packages, see the orderable addendum at

the end of the data sheet.

(2)The package size (length × width) is a nominal value and

includes pins, where applicable.

R

S

V

DD

V

OUT

= ADJ

LM4051-ADJ

R

1

R

2

Adjustable Reference Simplified Schematic

LM4051-N

SNOS491E – FEBRUARY 2000 – REVISED MARCH 2025

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Product specificaties