VRE302 Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – Low Cost Precision Reference

VRE302
Product Innovation From
Product Innova tionFrom
VRE302
Precision Voltage Reference
Features
♦ +2.5 V Output, ± 0.250 mV (.01%)
♦ Temperature Drift: 0.6 ppm/ºC
♦ Low Noise: 1.5 μV_P-P (0.1-10Hz)
♦ Industry Standard Pinout: 8-pin DIP or Surface
Mount Package
♦ Excellent Line Regulation: 6 ppm/V Typical
♦ Output Trim Capability
Applications
The VRE302 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 VRE302 offers su-
perior performance over monolithic references.
DESCRIPTION
The VRE302 is a low cost, high precision +2.5 V refer-
ence. Packaged in the industry standard 8-pin DIP, the
device is ideal for upgrading systems that use lower
performance references.
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
VRE302 series the most accurate reference available
in the standard 8-pin DIP package.
For enhanced performance, the VRE302 has an ex-
ternal trim option for users who want less than 0.01%
initial error. A reference ground pin is provided to elimi-
nate socket contact resistance errors.
Figure 1. BLOCK DIAGRAM
Selection Guide
Model
Initial Error Temp. Coeff. Temp. Range
(mV)
(ppm/ºC)
(ºC)
VRE302CS
0.50
VRE302CD
0.50
VRE302JS
0.25
VRE302JD
0.25
VRE302KS
0.40
VRE302LS
0.50
VRE302LD
0.50
2.0
0ºC to +70ºC
2.0
0ºC to +70ºC
0.6
-40ºC to +85ºC
0.6
-40ºC to +85ºC
1.0
-40ºC to +85ºC
2.0
-40ºC to +85ºC
2.0
-40ºC to +85ºC
Package
Options
SMT8 (GD)
DIP8 (KD)
SMT8 (GD)
DIP8 (KD)
SMT8 (GD)
SMT8 (GD)
DIP8 (KD)
8-pin Surface Mount
8-pin DIP
Package Style GD Package Style KD
64 _{http://www.cirrus.com}
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
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APEX − VRE302DSREVH