Application information

TSX7191, TSX7191A

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DocID026747 Rev 3

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Application information

4.1

Operating voltages

The TSX7191, TSX7191A device can operate from 2.7 to 16 V. The parameters are fully

specified for 4 V, 10 V, and 16 V power supplies. However, the parameters are very stable

temperature ranges from -40 to +125 °C.

4.2

Input pin voltage ranges

The TSX7191, TSX7191A device has internal ESD diode protection on the inputs. These

diodes are connected between the input and each supply rail to protect the input MOSFETs

from electrical discharge.

If the input pin voltage exceeds the power supply by 0.5 V, the ESD diodes become

conductive and excessive current can flow through them. Without limitation this over

current can damage the device.

In this case, it is important to limit the current to 10 mA, by adding resistance on the input

pin, as described in Figure 30.

Figure 30: Input current limitation

4.3

Rail-to-rail input

The TSX7191, TSX7191A device has a rail-to-rail input, and the input common mode range

4.4

Rail-to-rail output

The operational amplifier output levels can go close to the rails: to a maximum of 30 mV

9R

2

R

2

Vcc

Vin

R

1