VRE505 Datasheet, PDF (1/4 Pages) Cirrus Logic – Precision Voltage Reference

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VRVER5E05055
Precision Voltage Reference
Features
♦ +5 V Output, ± 1.0 mV (.02%)
♦ Temperature Drift: 1 ppm/ºC
♦ Low Noise: 3 μV_P-P (0.1-10 Hz)
♦ Industry Standard Pinout: 8-pin Surface Mount
Package
♦ Excellent Line Regulation: 6 ppm/V Typ.
♦ Output Trim Capability
DESCRIPTION
The VRE505 is a low cost, high precision +5 V refer-
ence. The device is ideal for upgrading systems that
use lower performance references.
The device provides ultrastable +5 V output with ±0.5
mV (.01%) initial accuracy and a temperature coeffi-
cient of 0.6 ppm/ºC. This improvement in accuracy is
made possible by a unique, patented multipoint laser
compensation technique. Significant improvements
have been made in other performance parameters as
well, including initial accuracy, warm-up drift, line regu-
lation, and long-term stability, making the VRE505 the
most accurate reference available.
For enhanced performance, the VRE505 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 reduc-
tion pin and the ground pin. A reference ground pin is
provided to eliminate socket contact resistance errors.
The VRE505 is recommended for use as a reference
for 14, 16, or 18 bit D/A converters which require an
external precision reference. The device is also ideal
for calibrating scale factor on high resolution A/D con-
verters. The VRE505 offers superior performance over
monolithic references.
Figure 1. BLOCK DIAGRAM
Selection Guide
Initial Error Temp. Coeff.
Model
(mV)
(ppm/ºC)
VRE505K
±1.0
2.0
Temp. Range
(ºC)
-40ºC to +85ºC
8-pin Surface Mount
Package Style GF
VRE5_h0_tt5_pD_://S_{www.cirrus.com}
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
AUG 2009₁
APEX - VRE505DSREVC