1

LT1019

1019fd

Precision Reference

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.

■

Ultralow Drift: 3ppm/°C Typical

■

Ultrahigh Line Rejection: ≈ 0.5ppm/V

■

Available at 2.5V, 4.5V, 5V, and 10V

■

Industrial Temperature Range in SO-8

Ultralinear Strain Gauge

Output Voltage Drift

FEATURES

DESCRIPTIO

APPLICATIO S

–

+

A1

†

LT1637

A2

LT1001

R3

2M

R2

20k

R4

20k

GAIN = 100

R5

2M

R6**

2M

IN

LT1019-5

GND

OUT

15V

5V

357Ω*

0.5W

ACTIVE

ELEMENT

350Ω

BRIDGE

–15V

–5V

357Ω*

0.5W

REDUCES REFERENCE AND AMPLIFIER

LOADING TO ≈0.

IF R6 = R3, BRIDGE IS NOT LOADED BY R2 AND R4.

ACTS AS A DIFFERENTIAL AMPLIFIER.

*

**

†

LT1019 • TA01

TEMPERATURE (˚C)

–50

1.001

1.002

1.003

25

75

1019 TA02

1.000

0.999

–25

0

50

100

125

0.998

0.997

5ppm/°C

0°C TO 70°C “BOX”

LT1019

CURVE

UNCOMPENSATED

“STANDARD” BANDGAP

DRIFT CURVE

10ppm/°C

FULL TEMP RANGE “BOX”

, LTC and LT are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.