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LMP91200

SNAS571E – JANUARY 2012 – REVISED FEBRUARY 2016

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Copyright © 2012–2016, Texas Instruments Incorporated

Electrical Characteristics (continued)

Unless otherwise specified, all limits specified for TA = 25°C. VS = (VDD – GND) = 3.3 V. VREF = 3.3 V.

(1)(2)(3)

PARAMETER

TEST CONDITIONS

MIN(4)

TYP(5)

MAX(4)

UNIT

(12) VCMHI voltage average drift is determined by dividing the change in VCMHI at the temperature extremes by the total temperature

change.

(13) VCMHI_acc vs. VREF is determined by dividing the change in VCMHI_acc at the VREF extremes by the total VREF change.

VCM BUFFER

VCMHI_acc

VCMHI accuracy

–1.6

1.6

mV

Tc_VCMHI

VCMHI temperature

coefficient(9)(12)

–40°C < TA < 125°C

–18

–5

8

µV/°C

VCMHI_acc_VREF VCMHI_acc vs. VREF(9)(13)

1.8 V < VREF < 5 V

–500

–100

300

µV/V

RoutVCMHI

VCMHI Output Impedance(9)

VCMHI = 1/2 VREF

250

K

Ω

AolVCM

Open-loop Gain(6)

VCMHI = 1/2 VREF, 300

mV < VCM < VDD – 300

mV

120

dB

at the temperature

extremes

90

VosVCM

(VCM – VCMHI)(6)

VCMHI = 1/2 VREF

–200

200

µV

at the temperature

extremes

–350

350

TcVosVCM

Input offset voltage drift

(VCM-VCMHI)(8)(9)

VCMHI = 1/2 VREF

–2.5

2.5

µV/°C

ZoutVCM

Output Impedance(9)

f = 1 KHz

4

Ω

PSRRVCM

DC_Power supply rejection

ratio

1.8 V < VDD < 5 V,

VCMHI = 1/2 VREF

80

dB

En_RMSVCM

Input referred noise (low

frequency)(9)

Integrated 0.1 Hz to 10 Hz

2.6

µVPP

enVCM

Input referred noise (high

frequency)(9)

f = 1 KHz

90

nV/

√Hz

IscVCM

Output short circuit

current(11)

Sourcing, Vout to GND

VCMHI = 1/2 VREF

16

mA

at the temperature

extremes

10

Sinking, Vout to VDD

VCMHI = 1/2 VREF

12

at the temperature

extremes

8