VRE4112 CIRRUS [Cirrus Logic], VRE4112 Datasheet

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VRE4112

Manufacturer Part Number
VRE4112
Description
Precision Voltage Reference
Manufacturer
CIRRUS [Cirrus Logic]
Datasheet
FEAtuRES
♦ +1.250, +2.500, +4.096 V Output
♦ Initial Error: ± 0.05% Max.
♦ Temperature Drift: 1.0 ppm/ºC Max.
♦ Low Noise: 2.2 μV
♦ Low Thermal Hysteresis: 20 ppm
♦ ±8 mA Output Source
♦ Power Down Mode
♦ Industry Standard SOIC 8-pin Package
♦ Commercial and Industrial Temp Ranges
♦ Second source for ADR29X, REF19X ,LT1460,
SElEction GuiDE
VRE4100DS
VRE4112C
VRE4125B
VRE4125K
VRE4141B
VRE4141K
VRE4112K
LT1461, LT1798, MAX616X, REF102
Model
http://www.cirrus.com
output
+1.250
+1.250
+2.500
+2.500
+4.096
+4.096
(V)
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
Precision Voltage Reference
(0.1 Hz-10 Hz, 1.024 V)
temp. coeff.
(ppm/ºc)
2.0
3.0
1.0
3.0
1.0
3.0
-40ºC to +85ºC
-40ºC to +85ºC
-40ºC to +85ºC
temp. Range
0ºC to +70ºC
0ºC to +70ºC
0ºC to +70ºC
Copyright © Cirrus Logic, Inc. 2009
(ºc)
(All Rights Reserved)
ApplicAtionS
This series is recommended for use as a reference for
14, 16, or 18-bit data converters which require a preci-
sion reference. The series offers superior performance
over standard on-chip references commonly found
with data converters.
DEScRiption
The VRE4112/VRE4125/VRE4141 are low cost, high
precision bandgap references that operate from +5 V.
These devices feature low noise, digital error correc-
tion, and an SOIC-8 package. The ultra stable output
is 0.05% accurate with a temperature coefficient as
low as 1.0 ppm/ºC. The improvement in overall accu-
racy is made possible by using EEPROM registers and
CMOS DAC’s for temperature and initial error correc-
tion. The DAC trimming is done after assembly which
eliminates assembly related shifts.
APEX − VRE4100DSREVA
package Style FX
VRE4125
VRE4141
VRE4112
8-pin Soic
VRE4100
ApR 2009
1

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VRE4112 Summary of contents

Page 1

... The series offers superior performance over standard on-chip references commonly found with data converters. DEScRiption The VRE4112/VRE4125/VRE4141 are low cost, high precision bandgap references that operate from +5 V. These devices feature low noise, digital error correc- tion, and an SOIC-8 package. The ultra stable output is 0.05% accurate with a temperature coefficient as low as 1.0 ppm/º ...

Page 2

... ABSolutE MAXiMuM RAtinGS Power Supply to any input pin ......-0.3V to +5.6V Operating Temp. (B,C) ...................... 0ºC to 70ºC Operating Temp. (K) ....................-40ºC to +85ºC Storage Temperature Range .....-65ºC to +150ºC ElEctRicAl SpEciFicAtionS for VRE4112 for VRE4125 and VRE4141 +25º parameter Symbol Input Voltage V IN ...

Page 3

tYpicAl pERFoRMAncE cuRVES Load Regulation vs Temperature Line Regulation vs Temperature Enable Response VRE4100DS Output Voltage vs Load ...

Page 4

VRE4100 Total Current ( Supply Voltage (ON) Output Voltage Change vs Sink Current I Dropout Voltage vs Load Current (V OUT 4 ...

Page 5

... The proper connection for the VRE4112/VRE4125/VRE4141 series voltage references is shown below. To achieve the specified performance, pay careful attention to the layout. Commons should be connected to a single point to minimize interconnect resistances. This will reduce voltage errors, noise pickup, and noise coupled from the power supply ...

Page 6

... Reference TC vs. ∆T change from 25°C for 1 LSB change 4. opERAtionAl notES input cApAcitoR An input capacitor is recommended for the VRE4112/VRE4125/VRE4141. A supply bypass capacitor on the input will assure that the reference is working from a low impedance source which will improve stability. It can improve the transient response when the load current is suddenly increased. ...

Page 7

... MEchAnicAl hYStERESiS Recommendations to minimize mechanical stress: 1) Mount the VRE4112/VRE4125/VRE4141 near the edges or corners of the PCB. The center of the board generally has the highest mechanical and thermal stress. 2) Mechanically isolate the device by cutting a U shaped slot around the package. This provides some mechanical and thermal isolation from the rest of the circuit ...

Page 8

VRE4100 contActinG ciRRuS loGic SuppoRt For all Apex Precision Power product questions and inquiries, call toll free 800-546-2739 in North America. For inquiries via email, please contact tucson.support@cirrus.com. International customers can also request support by contacting their local Cirrus Logic Sales Representative. To ...

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