7.5 Electrical Characteristics (continued)

at TA = 25°C, VS = ±15 V, VICM = VOCM = midsupply, VCLAMP+ = VS+, VCLAMP– = VS–, G = GIN = GOUT = 1 V/V, and RL = 10 kΩ

(unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

OUTPUT CLAMPING

VCLAMP+ Positive clamp voltage(10) TA = –40°C to +125°C

No output clamping

VS+

V

Output clamp enabled

VS+ – 1.5

VCLAMP–

Negative clamp

voltage(10)

TA = –40°C to +125°C

No output clamping

VS–

V

Output clamp enabled

VS– + 1.5

ΔVCLAMP Clamp voltage(10)

ΔVCLAMP = (VCLAMP+) – (VCLAMP–)

3

V

Power-supply rejection

ratio from VCLAMP to VO (3)

120

dB

Fail-safe current VCLAMP+ VS+ = VS– = 0 V, VCLAMP+ = 10 V

2

mA

ICLAMP+

Positive clamp current

VCLAMP+ ≤ VS+ – 1.5 V

–80

–60

µA

ICLAMP–

Negative clamp current

VCLAMP– ≥ VS– + 1.5 V

60

80

µA

POWER SUPPLY

IQ

Quiescent current

VIN = 0 V

6

7

mA

TA = –40°C to +125°C

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(1)

Offset voltages are uncorrelated. Total offset voltage, referred-to-input (RTI): VOS = √[VOSI 2 + (VOSO(Gout1 or Gout0.2) / GIN)2]. See more

details on Offset Voltage section.

(2)

Offset drifts are uncorrelated. Offset drift, referred-to-input (RTI): ΔVOS(RTI) = √[ΔVOSI 2 + (ΔVOSO / GIN)2].

(3)

Specified by design.

(4)

Specified by characterization.

(5)

Input voltage range of the instrumentation amplifier input stage. The valid input range depends on the common-mode voltage,

differential voltage, gain, and VOCM. See also the Input Common-Mode Range section.

(6)

The values specified for G > 1 do not include the effects of the external gain-setting resistor, RG.

(7)

eNO refers to output stage noise referred to the input of the FDA. See also the Noise Equivalent Model section.

(8)

See also the Input Protection section.

(9)

See also the Typical Characteristics section.

(10) See also the Output Clamping section.

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INA851

SBOS999A – MARCH 2022 – REVISED OCTOBER 2022

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