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REF2030AIDDCT
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REF2030AIDDCT 产品设计参考 - TI

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REF2030AIDDCT 产品设计参考

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INA213
V
IN
REF2030
V
REF
3.0 V
V
BIAS
1.5 V
EN
ADC
GND
LOAD
I
SENSE
R
SHUNT
V
IN-
V
IN+
REF
V
OUT
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
Output Voltage Accuracy (%)
Temperature (C)
C001
V
REF
V
BIAS
Product
Folder
Technical
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Software
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REF2025
,
REF2030
,
REF2033
,
REF2041
SBOS600B MAY 2014REVISED JULY 2014
REF20xx Low-Drift, Low-Power, Dual-Output, V
REF
and V
REF
/ 2 Voltage References
1 Features 3 Description
Applications with only a positive supply voltage often
1
Two Outputs, V
REF
and V
REF
/ 2, for Convenient
require additional stable voltage in the middle of the
Use in Single-Supply Systems
analog-to-digital converter (ADC) input range to bias
Excellent Temperature Drift Performance:
input bipolar signals. The REF20xx provides a
8 ppm/°C (max) from –40°C to 125°C
reference voltage (V
REF
) for the ADC and a second
highly-accurate voltage (V
BIAS
) that can be used to
High Initial Accuracy: ±0.05% (max)
bias the input bipolar signals.
V
REF
and V
BIAS
Tracking over Temperature:
The REF20xx offers excellent temperature drift
6 ppm/°C (max) from –40°C to 85°C
(8 ppm/°C, max) and initial accuracy (0.05%) on both
7 ppm/°C (max) from –40°C to 125°C
the V
REF
and V
BIAS
outputs while operating at a
Microsize Package: SOT23-5
quiescent current less than 430 µA. In addition, the
V
REF
and V
BIAS
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 V
REF
and V
BIAS
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
REF20xx 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 V
REF
and V
BIAS
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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REF2030AIDDCT 数据手册 PDF

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REF2030 数据手册 PDF

REF2030
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