VRE3050_10 Datasheet, PDF (1/6 Pages) Cirrus Logic – Precision Voltage Reference

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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 refer-
ence for 14, 16, or 18 bit data converters which re-
quire an external precision reference. The device
is also ideal for calibrating scale factor on high
resolution data converters. The VRE3050 offers
superior performance over monolithic references.
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 exter-
nal capacitor can be attached between the noise re-
duction 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
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Copyright © Cirrus Logic, Inc. 2010
(All Rights Reserved)
FEB2010₁
APEX − VRE3050DSREVG