TSV620 datasheet(12/24 Pages) STMICROELECTRONICS

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Application information

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DocID14912 Rev 3

Application information

3.1

Operating voltages

The TSV620, TSV620A, TSV621, and TSV621A can operate from 1.5 to 5.5 V. Their

parameters are fully specified for 1.8, 3.3, and 5 V power supplies. However, the parameters

are very stable in the full VCC range and several characterization curves show the TSV62x

characteristics at 1.5 V. Additionally, the main specifications are guaranteed in extended

temperature ranges from -40 °C to 125 °C.

3.2

Rail-to-rail input

The TSV62x is built with two complementary PMOS and NMOS input differential pairs. The

device 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 transition between the two pairs appears at VCC - 0.7 V.

In the transition region, the performances of CMRR, PSRR, Vio and THD are slightly

degraded (as shown in Figure 14 and Figure 15 for Vio vs. Vicm).

The device is guaranteed without phase reversal.

3.3

Rail-to-rail output

The operational amplifier’s output level can go close to the rails: 35 mV maximum above

and below the rail when connected to a 10 k

Ω resistive load to VCC/2.

Figure 14. Input offset voltage vs input common

mode at VCC+ = 1.5 V

Figure 15. Input offset voltage vs input common

mode at VCC+ = 5 V

-0.2

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

-0.5

-0.4

-0.3

-0.2

-0.1

0.0

0.1

0.2

0.3

0.4

0.5

Input Common Mode Voltage (V)

0.0

1.0

2.0

3.0

4.0

5.0

-0.4

-0.2

0.0

0.2

0.4

Input Common Mode Voltage (V)

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