LT1019AMH-4.5 Linear Technology, LT1019AMH-4.5 Datasheet

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LT1019AMH-4.5

Manufacturer Part Number
LT1019AMH-4.5
Description
Precision Reference
Manufacturer
Linear Technology
FEATURES
APPLICATIO S
TYPICAL
15V
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
Negative Shunt References
A/D and D/A Converters
Precision Regulators
Constant Current Sources
V/F Converters
Bridge Excitation
IN
LT1019-5
357Ω*
0.5W
GND
OUT
LT1637
A1
5V
APPLICATION
+
U
Ultralinear Strain Gauge
BRIDGE
ACTIVE
ELEMENT
350Ω
–15V
357Ω*
0.5W
–5V
U
**
*
REDUCES REFERENCE AND AMPLIFIER
LOADING TO ≈0.
IF R6 = R3, BRIDGE IS NOT LOADED BY R2 AND R4.
A1 V
ACTS AS A DIFFERENTIAL AMPLIFIER.
20k
20k
R2
R4
OS
AND DRIFT ARE NOT CRITICAL BECAUSE A2
R5
2M
+
LT1001
A2
2M
R3
2M
R6**
LT1019 • TA01
DESCRIPTIO
The LT
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.
All other trademarks are the property of their respective owners.
, LTC and LT are registered trademarks of Linear Technology Corporation.
GAIN = 100
®
1019 is a third generation bandgap voltage refer-
U
Precision Reference
1.003
1.002
0.999
0.997
1.001
1.000
0.998
–50
–25
Output Voltage Drift
FULL TEMP RANGE “BOX”
“STANDARD” BANDGAP
0°C TO 70°C “BOX”
0
UNCOMPENSATED
TEMPERATURE (˚C)
DRIFT CURVE
10ppm/°C
5ppm/°C
25
50
LT1019
75
LT1019
CURVE
100
1019 TA02
1019fd
1
125

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