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Current Sense Amplifiers | NCS21671

Current-Shunt Monitors, Zero-Drift, 40 V Common Mode, Bidirectional, Shutdown

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Overview

The NCS21671 and NCV21671 are a series of voltage output current sense amplifiers offered in gains of 25, 50, 100, and 200 V/V. These parts can measure voltage across shunts at common mode voltages from -0.1 V to 40 V, independent of supply voltage. The low offset of the zero-drift architecture enables current sensing with voltage drops across sense resistors as low as 10 mV full-scale. An optional enable function is provided to reduce current drain through the input pins and power supply pins to negligible levels. Two optional pins are included to simplify input filtering. These devices can operate from a single +1.8 V to +5.5 V power supply, drawing a maximum of 40 μA of supply current. These parts are available in Micro10 and SC70-6 packages.

  • High Side Current Sensing
  • Low Side Current Sensing
  • Power Management
  • Battery Charging and Discharging
  • Wide common mode input range: -0.1 V to 40 V
  • Supply voltage range: 1.7 V to 5.5 V
  • Low offset voltage: ±25 µV max
  • Enable pin
  • Integrated Filters

Material Composition

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Channels

Gain (V/V)

Gain Error Max (%)

Vs Min (V)

Vs Max (V)

VCM (V)

Iq Typ (mA)

Bandwidth Typ (-3dB)

Vos Max (mV)

Vos Drift Max (µV/°C)

Operating Temperature Range (°C)

CMRR Typ (dB)

Reference Price

NCS21671DM025R2G

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Active

CAD Model

Pb

A

H

P

Micro10

846B

1

260

REEL

4000

Y

1

25

0.3

1.8

5.5

40

0.045

40

0.016

0.7

-40 to 125

109

$0.7498

More Details

NCS21671DM050R2G

Loading...

Active

CAD Model

Pb

A

H

P

Micro10

846B

1

260

REEL

4000

Y

1

50

0.4

1.8

5.5

40

0.045

40

0.012

0.5

-40 to 125

109

$0.7498

More Details

NCS21671DM100R2G

Loading...

Active

CAD Model

Pb

A

H

P

Micro10

846B

1

260

REEL

4000

Y

1

100

0.5

1.8

5.5

40

0.045

35

0.01

0.5

-40 to 125

109

$0.7498

More Details

NCS21671DM200R2G

Loading...

Active

CAD Model

Pb

A

H

P

Micro10

846B

1

260

REEL

4000

Y

1

200

0.5

1.8

5.5

40

0.045

20

0.01

0.5

-40 to 125

109

$0.7498

More Details

NCS21671SQ025T2G

Loading...

Active

CAD Model

Pb

A

H

P

SC-88-6 / SC-70-6 / SOT-363-6

419B-02

1

260

REEL

3000

Y

1

25

0.3

1.8

5.5

40

0.045

40

0.016

0.7

-40 to 125

109

$0.672

More Details

NCS21671SQ050T2G

Loading...

Active

CAD Model

Pb

A

H

P

SC-88-6 / SC-70-6 / SOT-363-6

419B-02

1

260

REEL

3000

Y

1

50

0.4

1.8

5.5

40

0.045

40

0.012

0.5

-40 to 125

109

$0.672

More Details

NCS21671SQ100T2G

Loading...

Active

CAD Model

Pb

A

H

P

SC-88-6 / SC-70-6 / SOT-363-6

419B-02

1

260

REEL

3000

Y

1

100

0.5

1.8

5.5

40

0.045

35

0.01

0.5

-40 to 125

109

$0.672

More Details

NCS21671SQ200T2G

Loading...

Active

CAD Model

Pb

A

H

P

SC-88-6 / SC-70-6 / SOT-363-6

419B-02

1

260

REEL

3000

Y

1

200

0.5

1.8

5.5

40

0.045

20

0.01

0.5

-40 to 125

109

$0.672

More Details

NCV21671DM025R2G

Loading...

Active

CAD Model

Pb

A

H

P

Micro10

846B

1

260

REEL

4000

Y

1

25

0.3

1.8

5.5

40

0.045

40

0.016

0.7

-40 to 125

109

$0.7498

More Details

NCV21671DM050R2G

Loading...

Active

CAD Model

Pb

A

H

P

Micro10

846B

1

260

REEL

4000

Y

1

50

0.4

1.8

5.5

40

0.045

40

0.012

0.5

-40 to 125

109

$0.7498

More Details

NCV21671DM100R2G

Loading...

Active

CAD Model

Pb

A

H

P

Micro10

846B

1

260

REEL

4000

Y

1

100

0.5

1.8

5.5

40

0.045

35

0.01

0.5

-40 to 125

109

$0.7498

More Details

NCV21671DM200R2G

Loading...

Active

CAD Model

Pb

A

H

P

Micro10

846B

1

260

REEL

4000

Y

1

200

0.5

1.8

5.5

40

0.045

20

0.01

0.5

-40 to 125

109

$0.7498

More Details

NCV21671SQ025T2G

Loading...

Active

CAD Model

Pb

A

H

P

SC-88-6 / SC-70-6 / SOT-363-6

419B-02

1

260

REEL

3000

Y

1

25

0.3

1.8

5.5

40

0.045

40

0.016

0.7

-40 to 125

109

$0.6808

More Details

NCV21671SQ050T2G

Loading...

Active

CAD Model

Pb

A

H

P

SC-88-6 / SC-70-6 / SOT-363-6

419B-02

1

260

REEL

3000

Y

1

50

0.4

1.8

5.5

40

0.045

40

0.012

0.5

-40 to 125

109

$0.6808

More Details

NCV21671SQ100T2G

Loading...

Active

CAD Model

Pb

A

H

P

SC-88-6 / SC-70-6 / SOT-363-6

419B-02

1

260

REEL

3000

Y

1

100

0.5

1.8

5.5

40

0.045

35

0.01

0.5

-40 to 125

109

$0.6808

More Details

NCV21671SQ200T2G

Loading...

Active

CAD Model

Pb

A

H

P

SC-88-6 / SC-70-6 / SOT-363-6

419B-02

1

260

REEL

3000

Y

1

200

0.5

1.8

5.5

40

0.045

20

0.01

0.5

-40 to 125

109

$0.6808

More Details

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