TSX712IST datasheet(17/31 Pages) STMICROELECTRONICS

17 / 31 page

TSX711, TSX711A, TSX712

Application information

DocID025959 Rev 5

17/31

Application information

5.1

Operating voltages

The TSX711, TSX711A, and TSX712 devices 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 in the full VCC range. Additionally, the main specifications are

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

5.2

Input pin voltage ranges

The TSX711, TSX711A, and TSX712 devices have 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 33: "Input current limitation".

Figure 33: Input current limitation

5.3

Rail-to-rail input

The TSX711, TSX711A, and TSX712 devices have a rail-to-rail input, and the input

common mode range is extended from (VCC-) - 0.1 V to (VCC+) + 0.1 V.

5.4

Rail-to-rail output

The operational amplifier output levels can go close to the rails: to a maximum of 40 mV

above and below the rail wh

en connected to a 10 kΩ resistive load to VCC/2.

Vin

16 V

Vout

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