VRE3025 Datasheet, PDF (1/7 Pages) List of Unclassifed Manufacturers – Low Cost Precision Reference

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VREVR3E0320255
Precision Voltage Reference
Features
♦ +2.5 V Output, ± 0.25 mV (.01%)
♦ Temperature Drift: 0.6 ppm/ºc
♦ Low Noise: 1.5 μV_P-P (0.1Hz-10Hz)
♦ 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.
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.
Figure 1. BLOCK DIAGRAM
8
2
R1
R2
+
6
-
R4
5
R3
4
Selection Guide
Model
Initial
Error
(mV)
Temp.
Coeff. Temp. Range
(ppm/ºC)
(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
0ºC to +70ºC SMT8 (GF)
0.6
0ºC to +70ºC DIP8 (KD)
1.0
0ºC to +70ºC SMT8 (GF)
1.0
0ºC to +70ºC DIP8 (KD)
2.0
0ºC to +70ºC SMT8 (GF)
2.0
0ºC to +70ºC DIP8 (KD)
0.6 -40ºC to +85ºC SMT8 (GF)
0.6 -40ºC to +85ºC DIP8 (KD)
2.0 -40ºC to +85ºC SMT8 (GF)
8-pin Surface Mount
Package Style GF
8-pin DIP
Package Style KD
VRE3025DS
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
JUN 20091
APEX − VRE3025DSREVG