LMV821 datasheet(16/32 Pages) STMICROELECTRONICS

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Application information

LMV82x, LMV82xA

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DocID022467 Rev 4

Application information

4.1

Operating voltages

The LMV82x and LMV82xA can operate from 2.5 to 5.5 V. The devices’ parameters are fully

specified for 2.5, 2.7, and 5 V power supplies. Additionally, the main specifications are

guaranteed at extended temperature ranges from -40° C to +125° C.

4.2

Input common mode range

The LMV82x and LMV82xA devices have an input common mode range that includes

ground. The input common mode range is extended from Vcc- - 0.2 V to Vcc+ - 1 V, with no

output phase reversal.

4.3

Rail-to-rail output

The operational amplifiers’ output levels can go close to the rails: 150 mV maximum above

and below the rail when connected to a 2 k

Ω resistive load to V

cc/2.

4.4

Input offset voltage drift over temperature

The maximum input voltage drift over temperature variation is defined in Equation 1.

Equation 1

for Tmin < T < Tmax.

4.5

PCB layouts

For correct operation, it is advised to add 10 nF decoupling capacitors as close as possible

to the power supply pins.

4.6

Macromodel

Accurate macromodels of the LMV82x and LMV82xA are available on STMicroelectronics’

web site at www.st.com. These models are a trade-off between accuracy and complexity

(that is, time simulation) of the LMV82x and LMV82xA operational amplifiers. They emulate

the nominal performances of a typical device within the specified operating conditions

mentioned in the datasheet. They also help to validate a design approach and to select the

right operational amplifier, but they do not replace on-board measurements.

ΔVio

ΔT

-------------

max Vio T

() Vio 25°C

()

–

T25

°C

–

----------------------------------------------------

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