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ADR510

1.0 V Precision Low Noise

Shunt Voltage Reference

FEATURES

Precision 1.000 V Voltage Reference

Ultracompact 3 mm

3 mm SOT-23 Package

No External Capacitor Required

Low Output Noise: 4

V p-p (0.1 Hz to 10 Hz)

Initial Accuracy:

0.35% Max

Temperature Coefficient: 70 ppm/ C Max

Operating Current Range: 100

A to 10 mA

Output Impedance: 0.3

Max

Temperature Range: –40 C to +85 C

APPLICATIONS

Precision Data Acquisition Systems

Battery-Powered Equipment:

Cellular Phone, Notebook Computer, PDA,

and GPS

3 V/5 V, 8-/12-Bit Data Converters

Portable Medical Instruments

Industrial Process Control Systems

Precision Instruments

GENERAL DESCRIPTION

Designed for space critical applications, the ADR510 is a low

voltage (1.000 V), precision shunt-mode voltage reference in the

ultracompact (3 mm

3 mm) SOT-23 package. The ADR510

features low temperature drift (70 ppm/ C), high accuracy

( 0.35%), and ultralow noise (4 V p-p) performance.

The ADR510’s advanced design eliminates the need for an

external capacitor, yet it is stable with any capacitive load. The

minimum operating current increases from a scant 100

A to a

maximum of 10 mA. This low operating current and ease of

use make the ADR510 ideally suited for hand-held battery-

powered applications.

A TRIM terminal is available on the ADR510 to provide adjust-

ment of the output voltage over

0.5% without affecting the

temperature coefficient of the device. This feature provides

users with the flexibility to trim out any system errors.

PIN CONFIGURATION

3-Lead SOT-23

1

3

2

ADR510

TRIM/NC

ADR510

Output

Initial

Temperature

Voltage

Accuracy

Coefficient

Model

(mV)

(%)

(ppm/ C)

ADR510ART-REEL7 1.000

3.5

0.35

70

(OPTIONAL)

ADR510

Figure 1. Typical Operating Circuit