TSZ182IST datasheet(21/39 Pages) STMICROELECTRONICS

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TSZ182

Application information

DocID029836 Rev 1

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5.2

Operating voltages

The TSZ182 device can operate from 2.2 to 5.5 V. The parameters are fully specified for

2.2 V, 3.3 V, and 5 V power supplies. However, the parameters are very stable in the full

VCC range and several characterization curves show the TSZ182 device characteristics at

2.2 V and 5.5 V. Additionally, the main specifications are guaranteed in extended

temperature ranges from -40 to 125 °C.

5.3

Input pin voltage ranges

The TSZ182 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 50: "Input current limitation".

Figure 50: Input current limitation

5.4

Rail-to-rail input/output

The TSZ182 has a rail-to-rail input, and the input common mode range is extended from

(VCC-) - 0.1 V to (VCC+) + 0.1 V.

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

above and below the rail when connected to a 10

kΩ resistive load to VCC/2.

Vin

VCC+

VCC-

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