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REF1925AIDDCR Datasheet(PDF) 1 Page - Texas Instruments

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Part # REF1925AIDDCR
Description  Voltage References
Download  31 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

REF1925AIDDCR Datasheet(HTML) 1 Page - Texas Instruments

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INA213
VIN
REF1930
VREF
3.0 V
VBIAS
1.5 V
EN
ADC
GND
ISENSE
RSHUNT
VIN-
VIN+
REF
VOUT
Power
Supply
-0.05
-0.04
-0.03
-0.02
-0.01
0
0.01
0.02
0.03
0.04
0.05
±75
±50
±25
0
25
50
75
100
125
150
Temperature (
ƒC)
C001
V
REF
V
BIAS
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
Reference
Design
REF1925, REF1930, REF1933, REF1941
SBOS697 – SEPTEMBER 2014
REF19xx Low-Drift, Low-Power, Dual-Output, VREF and VREF / 2 Voltage References
1 Features
3 Description
Applications with only a positive supply voltage often
1
Two Outputs, VREF and VREF / 2, for Convenient
require an additional stable voltage in the middle of
Use in Single-Supply Systems
the analog-to-digital converter (ADC) input range to
Excellent Temperature Drift Performance:
bias input bipolar signals. The REF19xx provides a
25 ppm/°C (max) from –40°C to 125°C
reference voltage (VREF) for the ADC and a second
highly-accurate voltage (VBIAS) that can be used to
High Initial Accuracy: ±0.1% (max)
bias the input bipolar signals.
VREF and VBIAS Tracking over Temperature:
The
REF19xx
offers
excellent
temperature
drift
6 ppm/°C (max) from –40°C to 85°C
(25 ppm/°C, max) and initial accuracy (0.1%) on both
7 ppm/°C (max) from –40°C to 125°C
the VREF and VBIAS outputs while operating at a
Microsize Package: SOT23-5
quiescent current less than 430 µA. In addition, the
VREF and VBIAS outputs track each other with a
Low Dropout Voltage: 10 mV
precision of 6 ppm/°C (max) across the temperature
High Output Current: ±20 mA
range of –40°C to 85°C. All these features increase
Low Quiescent Current: 360
μA
the precision of the signal chain and decrease board
space, while reducing the cost of the system as
Line Regulation: 3 ppm/V
compared to a discrete solution. Extremely low
Load Regulation: 8 ppm/mA
dropout voltage of only 10 mV allows operation from
very low input voltages, which can be very useful in
2 Applications
battery-operated systems.
Digital Signal Processing:
Both the VREF and VBIAS voltages have the same
Power Inverters
excellent specifications and can sink and source
current equally well. Very good long-term stability and
Motor Controls
low noise levels make these devices ideally-suited for
Current Sensing
high-precision industrial applications.
Industrial Process Controls
Medical Equipment
Device Information(1)
PART NAME
PACKAGE
BODY SIZE (NOM)
Data Acquisition Systems
REF19xx
SOT (5)
2.90 mm × 1.60 mm
Single-Supply Systems
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
space
space
Application Example
VREF and VBIAS vs Temperature
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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