7.3 Feature Description

7.3.1 Input Common-Mode Voltage Range

The INA151 input common-mode voltage range extends from 4.3V up to 110V from negative supply and features

a high DC CMRR of 140dB (typical).

Common-Mode Voltage (V)

-10

0

10

20

30

40

50

60

70

80

90 100 110

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

G = 1

G = 2/3

G = 1/2

G = 1/4

Figure 7-2. Offset Voltage (Input Referred) vs Input Common-Mode Voltage

Figure 7-2 outlines the linear performance region of the INA151. A high common-mode rejection can be

expected when operating within the limits of the VCM versus VOUT graph.

The INA151 is protected against negative common-mode voltages extending down to −85V. This is useful when

multiple battery cells are connected in stack and accidental miswiring occurs. The reverse current is limited by

the input resistors and supply resistors of maximum 5mA at a negative common-mode voltage of −85V.

Common-Mode Voltage (V)

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-0.15

0.15

0.45

0.75

1.05

1.35

Figure 7-3. Input Bias Current vs Reverse Input Common-Mode Voltage

If the external power supply cannot sink reverse current an additional reverse path through DGND pin is

provided.

A minimum input common-mode voltage of 4.3V above the negative supply is required to operate the input

amplifier in the linear region.

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INA151

SLVSIL6B – JANUARY 2026 – REVISED MARCH 2026

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Product Folder Links: INA151