5

Application information

5.1

Operating voltages

The TSB7191, TSB7191A, TSB7192 and TSB7192A devices can operate from 2.7 to 36 V. The parameters are

and several characterization curves show the TSB7191, TSB7191A, TSB7192 and TSB7192A device

characteristics over the full operating range. Additionally, the main specifications are guaranteed in extended

temperature range from -40 to 125 °C.

5.2

Input pin voltage range

The TSB7191, TSB7191A, TSB7192 and TSB7192A devices have an internal ESD diode protection on the

inputs. These diodes are connected between the inputs and each supply rail to protect the input stage from

electrical discharge, as shown in the figure below.

TSB7192

100Ω

100Ω

In-

In+

Out

Vcc+

Vcc-

-

+

Out

D1

D2

When the input pin voltage exceeds the power supply, the ESD diodes become conductive and, depending on

this voltage, excessive current can flow through them. Without limitation this overcurrent can damage the device.

In this case, the current has to be limited to 10 mA by adding a resistance in series with the input pin.

Similarly, in order to avoid excessive current in the protection diodes between the positive and negative inputs,

the differential voltage should be limited to ± 2 V, or the current limited to 10 mA. Such a high differential voltage

can be reached when the output is in saturation mode, or slew rate limited. In particular, it can happen when the

device is used in comparator mode.

The TSB7191, TSB7191A, TSB7192 and TSB7192A do not show any phase reversal for any input common

200 mV.

TSB7191, TSB7191A, TSB7192, TSB7192A

Application information

DS12641 - Rev 5

page 17/34