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

VRE3025

VRE3025DS

1

DESCRIPTION

The VRE3025 is a low cost, high precision +2.5 V ref-

erence that operates from +10 V. The device features

a buried zener for low noise and excellent long term

stability. Packaged in either an 8-pin DIP or SMT op-

tion, the device is ideal for high resolution data conver-

sion systems.

The device provides ultrastable +2.5 V output with

±0.25 mV (.01%) initial accuracy and a temperature

coefficient of 0.6 ppm/ºC. 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, making the

VRE3025 series the most accurate reference avail-

able.

For enhanced performance, the VRE3025 has an ex-

ternal trim option for users who want less than 0.01%

initial error. For ultra low noise applications, an external

capacitor can be attached between the noise reduction

pin and the ground pin.

FEaTuRES

♦ +2.5 V Output, ± 0.25 mV (.01%)

♦ Temperature Drift: 0.6 ppm/ºc

♦ Low Noise: 1.5 μV

♦ Low Thermal Hysteresis: 1 ppm Typical

♦ ±15 mA Output Source and Sink Current

♦ Excellent Line Regulation: 5 ppm/V Typical

♦ Optional Noise Reduction and Voltage Trim

♦ Industry Standard Pinout: 8-pin DIP or

Surface Mount Package

aPPlICaTIONS

The VRE3025 is recommended for use as a ref-

erence for 14, 16, or 18 bit data converters which

require an external precision reference. The de-

vice is also ideal for calibrating scale factor on

high resolution data converters. The VRE3025

offers superior performance over monolithic ref-

erences.

Precision Voltage Reference

VRE3025

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

6

8

5

2

4

R1

R2

R3

R4

+

-

Figure 1. BlOCK DIaGRaM

Copyright © Cirrus Logic, Inc. 2009

(All Rights Reserved)

http://www.cirrus.com

JuN 2009

APEX − VRE3025DSREVG

Model

Initial

Error

(mV)

Temp.

Coeff.

(ppm/ºC)

Temp. Range

(ºC)

Package

Options

VRE3025AS

VRE3025AD

VRE3025BS

VRE3025BD

VRE3025CS

VRE3025CD

VRE3025JS

VRE3025JD

VRE3025LS

0.250

0.250

0.375

0.375

0.500

0.500

0.250

0.250

0.500

0.6

0.6

1.0

1.0

2.0

2.0

0.6

0.6

2.0

0ºC to +70ºC

0ºC to +70ºC

0ºC to +70ºC

0ºC to +70ºC

0ºC to +70ºC

0ºC to +70ºC

-40ºC to +85ºC

-40ºC to +85ºC

-40ºC to +85ºC

SMT8 (GF)

DIP8 (KD)

SMT8 (GF)

DIP8 (KD)

SMT8 (GF)

DIP8 (KD)

SMT8 (GF)

DIP8 (KD)

SMT8 (GF)

SElECTION GuIDE

8-pin Surface Mount

Package Style GF

8-pin DIP

Package Style KD