VRE305 Datasheet, PDF (1/5 Pages) Cirrus Logic – Precision Voltage Reference

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VRVER3E03055
Precision Voltage Reference
Features
♦ +5 V Output, ± 0.5 mV (.01%)
♦ Temperature Drift: 0.6 ppm/ºC
♦ Low Noise: 3 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 VRE305 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 VRE305 offers su-
perior performance over monolithic references.
DESCRIPTION
The VRE305 is a low cost, high precision +5 V refer-
ence. Packaged in an industry standard 8-pin DIP or
SMT, 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/°C. 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
regulation, and long-term stability, making the VRE305
series the most accurate reference available in a stan-
dard 8-pin DIP or SMT.
For enhanced performance, the VRE305 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 Temp. Coeff. Temp. Range
(mV)
(ppm/ºC)
(ºC)
VRE305AS
0.5
VRE305AD
0.5
VRE305BS
0.8
VRE305BD
0.8
VRE305CS
1.0
VRE305CD
1.0
VRE305JS
0.5
VRE305JD
0.5
VRE305KS
0.8
VRE305KD
0.8
VRE305LS
1.0
VRE305LD
1.0
0.6
0ºC to +70ºC
0.6
0ºC to +70ºC
1.0
0ºC to +70ºC
1.0
0ºC to +70ºC
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
1.0
-40ºC to +85ºC
2.0
-40ºC to +85ºC
2.0
-40ºC to +85ºC
Package
Options
SIP8 (GD)
DIP8 (KD)
SIP8 (GD)
DIP8 (KD)
SIP8 (GD)
DIP8 (KD)
SIP8 (GD)
DIP8 (KD)
SIP8 (GD)
DIP8 (KD)
SIP8 (GD)
DIP8 (KD)
8-pin Surface Mount
8-pin DIP
Package Style GD Package Style KD
VRE305DS
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
MAR 2009
APEX − VRE305DSREVE