VRE3050KS Cirrus Logic Inc, VRE3050KS Datasheet

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VRE3050KS

Manufacturer Part Number
VRE3050KS
Description
IC VOLT REF PREC 5V 8-SMD
Manufacturer
Cirrus Logic Inc
Datasheet

Specifications of VRE3050KS

Reference Type
Series
Voltage - Output
5V
Tolerance
±0.8mV
Temperature Coefficient
1ppm/°C
Voltage - Input
8 ~ 36 V
Number Of Channels
1
Current - Quiescent
4mA
Current - Output
15mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SMD
Product
Voltage References
Topology
Series References
Output Voltage
5 V
Average Temperature Coefficient (typ)
1 PPM / C
Series Vref - Input Voltage (max)
40 V
Shunt Current (max)
15 mA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Cathode
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
FEATURES
♦ +5 V Output, ± 0.5 mV (.01%)
♦ Temperature Drift: 0.6 ppm/ºC
♦ Low Noise: 3 μV
♦ 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
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.
SELECTION GUIDE
VRE3050DS
VRE3050A
VRE3050B
VRE3050C
VRE3050J
VRE3050K
VRE3050L
Package
Model
www.cirrus.com
Initial Error
®
(mV)
®
±0.5
±0.8
±1.0
±0.5
±0.8
±1.0
P r o d u c t I n n o v a t i o n F r o m
P r o d u c t I n n o v a t i o n F r o m
P-P
VRE3050
(0.1Hz-10Hz)
Precision Voltage Reference
Temp. Coeff.
(ppm/ºC)
0.6
1.0
2.0
0.6
1.0
2.0
Figure 1. BLOCK DIAGRAM
-40ºC to +85ºC
-40ºC to +85ºC
-40ºC to +85ºC
Temp. Range
0ºC to +70ºC
0ºC to +70ºC
0ºC to +70ºC
R1
Copyright © Cirrus Logic, Inc. 2010
(ºC)
R2
8
(All Rights Reserved)
4
R3
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.
R4
+
-
2
5
8-pin Surface Mount
6
Package Style GF
APEX − VRE3050DSREVG
VRE3050
VRE3050
FEB2010
1

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VRE3050KS Summary of contents

Page 1

VRE3050 ...

Page 2

VRE3050 1. CHARACTERISTICS AND SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Power Supply ........................... -0.3V to +40V OUT, TRIM ................................ -0.3V to +12V NR .............................................. -0.3V to +6V Operating Temp. (A,B,C) ........... 0ºC to +70ºC Operating Temp. (J,K,L) ......... -40ºC to +85ºC ELECTRICAL ...

Page 3

TYPICAL PERFORMANCE CURVES V vs. TEMPERATURE OUT 1.00 0.75 0.50 Upp er Li mit Up per Lim ...

Page 4

VRE3050 JUNCTION TEMP. RISE VS. OUTPUT CURRENT Output Current (mA) OUTPUT NOISE-VOLTAGE DENSITY vs. FREQUENCY 100 100 1k Frequency (Hz) 4 ® ...

Page 5

THEORY OF OPERATION The following discussion refers to the block diagram in Figure 1. A FET current ...

Page 6

VRE3050 Figure 3. 10000 1000 100 10 1 0.1 0.01 1 Reference TC vs. ∆T change from 25°C for 1 LSB change 5. TEMPERATURE PERFORMANCE The VRE3050 is designed for applications where the initial error at room temperature and drift ...

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