Application information

TSB611

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3

Application information

3.1

Operating voltages

The TSB611 operational amplifier can operate from 2.7 V to 36 V. The parameters are fully

specified at 2.7 V, 12 V, and 36 V power supplies. However, parameters are very stable in

temperature range from -40 to 125 °C.

3.2

Input common-mode range

The TSB611 has an input common-mode range that includes ground. The input common-

3.3

Rail-to-rail output

The operational amplifier's output levels can go close to the rails: 100 mV maximum below

the positive rail and 110 mV maximum above the negative rail when connected to a 10 kΩ

3.4

Input offset voltage drift over temperature

The maximum input voltage drift variation over temperature is defined as the offset

variation related to the offset value measured at 25 °C. The operational amplifier is one of

the main circuits of the signal conditioning chain, and the amplifier input offset is a major

contributor to the chain accuracy. The signal chain accuracy at 25 °C can be compensated

during production at application level. The maximum input voltage drift over temperature

enables the system designer to anticipate the effect of temperature variations.

The maximum input voltage drift over temperature is computed using Equation 1.

Equation 1

Where T = -40 °C and 125 °C.

The datasheet maximum value is guaranteed by measurements on a representative

3.5

Long term input offset voltage drift

To evaluate product reliability, two types of stress acceleration are used:

Voltage acceleration, by changing the applied voltage

Temperature acceleration, by changing the die temperature (below the maximum

junction temperature allowed by the technology) with the ambient temperature.

The voltage acceleration has been defined based on JEDEC results, and is defined using

Equation 2.

∆V

io

∆T

ma x

V

V

–

T

25 °C

–

=

°C