LTC6102

LTC6102-1/LTC6102HV

1

6102fe

For more information www.linear.com/LTC6102

Typical applicaTion

FeaTures

applicaTions

DescripTion

Precision Zero Drift

Current Sense Amplifier

TheLTC®6102/LTC6102HVareversatile,highvoltage,high-

side current sense amplifiers. Their high supply voltage

rating allows their use in many high side applications,

while the low drift and offset ensure accuracy across a

wide range of operating conditions. The LTC6102-1 is a

version of the LTC6102 that includes a low power disable

mode to conserve system standby power.

The LTC6102/LTC6102HV monitor current via the voltage

across an external sense resistor (shunt resistor). Internal

circuitry converts input voltage to output current, allowing

a small sense signal on a large common mode voltage to

be translated to a ground-referred signal. Low DC offset

allows the use of very low shunt resistor values and large

gain-setting resistors. As a result, power loss in the shunt

is reduced.

The wide operating supply and high accuracy make the

LTC6102 ideal for a large array of applications, from auto-

motive, to industrial and power management. A maximum

input sense voltage of 2V allows a wide range of currents

and voltages to be monitored. Fast response makes the

LTC6102 the perfect choice for load current warnings and

shutoff protection control.

All versions of the LTC6102 are available in 8-lead MSOP

and 3mm

× 3mm DFN packages.

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Supply Range:

4V to 60V, 70V Maximum (LTC6102)

5V to 100V, 105V Maximum (LTC6102HV)

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±10µV Input Offset Maximum

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±50nV/°C Input Offset Drift Maximum

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Fast Response: 1µs Step Response

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Gain Configurable with Two Resistors

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Low Input Bias Current: 3nA Maximum

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PSRR 130dB Minimum

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Output Currents up to 1mA

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Operating Temperature Range: –40°C to 125°C

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Disable Mode (LTC6102-1 Only): 1µA Maximum

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Available in 8-Lead MSOP and 3mm

× 3mm

DFN Packages

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Current Shunt Measurement

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Battery Monitoring

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Remote Sensing

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Load Protection

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Motor Control

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Automotive Controls

Dynamic Current

Measurement Range

10A Current Sense with 10mA Resolution and 100mW

Maximum Dissipation

TO µP

6102 TA01

LTC2433-1

ROUT

4.99k

VOUT

1µF

5V

L

O

A

D

VOUT =

• VSENSE = 249.5VSENSE

ROUT

RIN

*PROPER SHUNT SELECTION COULD ALLOW

MONITORING OF CURRENTS IN EXCESS OF 1000A

LTC6102

RIN

20

VSENSE

1m

5V TO

105V

V+

V–

OUT

+IN

+

–

–INF

–INS

VREG

0.1µF

+

MAXIMUM SENSE VOLTAGE (V)

0.0001

110

100

90

80

70

60

50

40

30

20

0.001

0.01

1

0.1

6102 TA01b

DYNAMIC RANGE RELATIVE

TO 10µV OFFSET VOLTAGE

RSENSE = 100m

Max VSENSE = 1V

RSENSE = 10m

Max VSENSE = 100µV

L

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