LT6657

1

6657fb

For more information www.linear.com/LT6657

Typical applicaTion

FeaTures

DescripTion

1.5ppm/°C Drift, Low Noise,

Buffered Reference

TheLT®6657isaprecisionvoltagereferencethatcombines

robust operating characteristics with extremely low drift

and low noise. With advanced curvature compensation,

this bandgap reference achieves 1.5ppm/°C drift with

predictable temperature behavior, and an initial voltage

low temperature cycling hysteresis.

TheLT6657isalowdropoutreferencethatcanbepowered

from as little as 50mV above the output voltage, up to 40V.

The buffered output supports ±10mA of output drive with

low output impedance and precise load regulation. The

high sink current capability allows operation as a negative

voltage reference with the same precision as a positive

reference. This part is safe under reverse battery condi-

tions, and includes current protection when the output is

short-circuited and thermal shutdown for overload condi-

tions. A shutdown is included to allow power reduction

while enabling a quick turn-on.

TheLT6657isfullyspecifiedoverthetemperaturerangeof

–40°Cto125°C.Itisavailableinthe8-leadMSOPpackage.

L

, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Basic Connection

Output Voltage Temperature Drift

n

Low Drift

n

A Grade: 1.5ppm/°C Max

n

B Grade: 3ppm/°C Max

n

Low Noise:

n

n

n

Wide Supply Range to 40V

n

Sources and Sinks 10mA Min

n

Line Regulation: 0.2ppm/V

n

Load Regulation: 0.7ppm/mA

n

Reverse Supply Protection

n

Reverse Output Protection

n

Low Power Shutdown: <4µA Max

n

Thermal Protection

n

Can Operate in Shunt Mode

n

Configurable as a Negative Reference

n

Available Output Voltage Options: 2.5V, 3V, 5V

n

MSOP-8 Package

applicaTions

n

High Temperature Industrial

n

High Resolution Data Acquisition Systems

n

Instrumentation and Process Control

n

Automotive Control and Monitoring

n

Medical Equipment

n

Shunt and Negative Voltage References

LT6657

0.1µF

OUT

IN

GND

1µF

6657 TA01a

2

SHDN

3

6

4

TEMPERATURE (°C)

–45

200

100

–100

0

–200

5

105

55

6657 TA01b

130

–20

80

30

THREE TYPICAL PARTS

1ppm/°C BOX