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LT1019ACN8-10 View Datasheet(PDF) - Linear Technology

Part NameLT1019ACN8-10 Linear
Linear Technology Linear
DescriptionPrecision Reference


LT1019ACN8-10 Datasheet PDF : 12 Pages
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LT1019
Precision Reference
FEATURES
Tight Initial Output Voltage: < 0.05%
Ultralow Drift: 3ppm/°C Typical
Series or Shunt Operation
Curvature Corrected
Ultrahigh Line Rejection: 0.5ppm/V
Low Output Impedance: 0.02
Plug-In Replacement for Present References
Available at 2.5V, 4.5V, 5V, and 10V
100% Noise Tested
Temperature Output
Industrial Temperature Range in SO-8
Available in 8-Lead N8 and S8 Packages
U
APPLICATIO S
Negative Shunt References
A/D and D/A Converters
Precision Regulators
Constant Current Sources
V/F Converters
Bridge Excitation
DESCRIPTIO
The LT®1019 is a third generation bandgap voltage refer-
ence utilizing thin film technology and a greatly improved
curvature correction technique. Wafer level trimming of
both reference and output voltage combines to produce
very low TC and tight initial output voltage tolerance.
The LT1019 can both sink and source up to 10mA and can
be used in either the series or shunt mode, allowing the
reference to operate with positive or negative output
voltages without external components. Minimum input/
output voltage is less than 1V in the series mode, providing
improved tolerance of low line conditions and excellent
line regulation.
The LT1019 is available in four voltages: 2.5V, 4.5V, 5V
and 10V. It is a direct replacement for most bandgap
references presently available including AD580, AD581,
REF-01, REF-02, MC1400, MC1404 and LM168.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
15V 357*
0.5W 5V
IN OUT
LT1019-5
GND
A1
LT1637
Ultralinear Strain Gauge
350
BRIDGE
ACTIVE
ELEMENT
– 5V
357*
0.5W
– 15V
R3
2M
R2
20k
R4
A2
20k
+LT1001
GAIN = 100
R5
2M
R6**
2M
LT1019 • TA01
*REDUCES REFERENCE AND AMPLIFIER
LOADING TO 0.
**IF R6 = R3, BRIDGE IS NOT LOADED BY R2 AND R4.
A1 VOS AND DRIFT ARE NOT CRITICAL BECAUSE A2
ACTS AS A DIFFERENTIAL AMPLIFIER.
Output Voltage Drift
1.003
1.002
1.001
1.000
10ppm/°C
FULL TEMP RANGE “BOX”
LT1019
CURVE
0.999
5ppm/°C
0°C TO 70°C “BOX”
0.998
UNCOMPENSATED
“STANDARD” BANDGAP
0.997
DRIFT CURVE
–50 –25 0 25 50 75
TEMPERATURE (˚C)
100 125
1019 TA02
1019fd
1
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DESCRIPTION
The LT®1019 is a third generation bandgap voltage reference utilizing thin film technology and a greatly improved curvature correction technique. Wafer level trimming of both reference and output voltage combines to produce very low TC and tight initial output voltage tolerance. The LT1019 can both sink and source up to 10mA and can be used in either the series or shunt mode, allowing the reference to operate with positive or negative output voltages without external components. Minimum input/output voltage is less than 1V in the series mode, providing improved tolerance of low line conditions and excellent line regulation.

FEATURES
■ Tight Initial Output Voltage: <0.05%
■ Ultralow Drift: 3ppm/°C Typical
■ Series or Shunt Operation
■ Curvature Corrected
■ Ultrahigh Line Rejection: ≈0.5ppm/V
■ Low Output Impedance: ≈0.02Ω
■ Plug-In Replacement for Present References
■ Available at 2.5V, 4.5V, 5V, and 10V
■ 100% Noise Tested
■ Temperature Output
■ Industrial Temperature Range in SO-8
■ Available in 8-Lead N8 and S8 Packages

APPLICATIONS
■ Negative Shunt References
■ A/D and D/A Converters
■ Precision Regulators
■ Constant Current Sources
■ V/F Converters
■ Bridge Excitation

 

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