VRE3050 Datasheet, PDF (1/7 Pages) List of Unclassifed Manufacturers – VRE3050 Low Cost Precision Reference

P r o d u c t IInnnnoovvaa t i o n FFr roomm
VREVR3E0350500
Precision Voltage Reference
Features
♦ +5 V Output, ± 0.5 mV (.01%)
♦ Temperature Drift: 0.6 ppm/ºC
♦ Low Noise: 3 μV_P-P (0.1Hz-10Hz)
♦ Low Thermal Hysterisis: 1 ppm Typical
♦ ±15mA Output Source and Sink Current
♦ Excellent Line Regulation: 5 ppm/V Typical
♦ Optional Noise Reduction and Voltage Trim
♦ Industry Standard Pinout: 8-pin Surface Mount
Package
Applications
The VRE3050 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 VRE3050
offers superior performance over monolithic ref-
erences.
DESCRIPTION
The VRE3050 is a low cost, high precision 5 V refer-
ence that operates from +10 V. The device features
a buried zener for low noise and excellent long term
stability. Packaged in an 8-pin SMT, the device is ideal
for high resolution data conversion systems.
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 reg-
ulation, and long-term stability, making the VRE3050
series the most accurate reference available.
For enhanced performance, the VRE3050 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 Temp. Coeff. Temp. Range
(mV)
(ppm/ºC)
(ºC)
VRE3050A
±0.5
VRE3050B
±0.8
VRE3050C
±1.0
VRE3050J
±0.5
VRE3050K
±0.8
VRE3050L
±1.0
0.6
0ºC to +70ºC
1.0
0ºC to +70ºC
2.0
0ºC to +70ºC
0.6
-40ºC to +85ºC
1.0
-40ºC to +85ºC
2.0
-40ºC to +85ºC
8-pin Surface Mount
Package Style GF
VRE3050DS
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
MAR 2009
APEX − VRE3050DSREVF