VRE304 Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – Low Cost Precision Reference

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VRVER3E03044
Precision Voltage Reference
Features
♦ +4.5 V Output, ± 0.450 mV (.01%)
♦ Temperature Drift: 0.6 ppm/ºC
♦ Low Noise: 3μV_p-p (0.1-10Hz)
♦ 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.
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.
Figure 1. BLOCK DIAGRAM
Selection Guide
Model
Initial Error
(mV)
VRE304A
VRE304C
±0.45
±0.90
Temp. Coeff.
(ppm/ºC)
0.6
2.0
Temp. Range
(ºC)
0ºC to +70ºC
0ºC to +70ºC
VRE304DS
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
8-pin Surface Mount
Package Style GD
MAR 2009
APEX − VRE304DSREVE