P r o d u c t I n n o v a t i o n F r o m

VRE304

VRE304DS



DESCRIPTION

The VRE304 is a low cost, high precision +4.5 V refer-

ence. Available in an industry standard 8-pin surface

mount package, the device is ideal for upgrading sys-

tems that use lower performance references.

The device provides ultrastable +4.5 V output with

±0.45 mV (.01%) initial accuracy and a temperature

coefficient of 0.6 ppm/°C. This improvement in accu-

racy is made possible by a unique, patented multipoint

laser compensation technique. Significant improve-

ments have been made in other performance param-

eters as well, including initial accuracy, warm-up drift,

line regulation, and long-term stability.

For enhanced performance, the VRE304 has an exter-

nal trim option for users who want less than 0.01% ini-

tial error. For ultra low noise applications, an external

capacitor can be attached between the noise reduction

pin and the ground pin. A reference ground pin is pro-

vided to eliminate socket contact resistance errors.

FEaTuRES

♦ +4.5 V Output, ± 0.450 mV (.01%)

♦ Temperature Drift: 0.6 ppm/ºC

♦ Low Noise: 3μV

♦ Industry Standard Pinout: 8-Pin Surface Mount

Package

♦ Excellent Line Regulation: 6 ppm/V Typical

♦ Output Trim Capability

aPPlICaTIONS

The VRE304 is recommended for use as a refer-

ence for 14, 16, or 18 bit D/A converters which re-

quire an external precision reference. The device

is also ideal for calibrating scale factor on high

resolution A/D converters. The VRE304 offers su-

perior performance over monolithic references.

Precision Voltage Reference

VRE304

P r o d u c t I n n o v a t i o n F r o m

Figure.BlOCKDIaGRaM

Copyright © Cirrus Logic, Inc. 2009

(All Rights Reserved)

http://www.cirrus.com

MaR2009

APEX − VRE304DSREVE

Model

InitialError

(mV)

Temp.Coeff.

(ppm/ºC)

Temp.Range

(ºC)

VRE304A

VRE304C

±0.45

±0.90

0.6

2.0

0ºC to +70ºC

0ºC to +70ºC

SElECTIONGuIDE

8-pinSurfaceMount

PackageStyleGD