TSV632 datasheet(13/26 Pages) STMICROELECTRONICS

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TSV63x

Application information

Doc ID 15688 Rev 2

13/26

Application information

4.1

Operating voltages

The TSV63x 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 TSV63x characteristics at 1.5 V. Additionally, the

main specifications are guaranteed in extended temperature ranges from -40° C to +125° C.

4.2

Rail-to-rail input

The TSV63x are built with two complementary PMOS and NMOS input differential pairs.

The 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. The transition between the two pairs appears at VCC+ - 0.7 V. In

the transition region, the performance of CMRR, PSRR, Vio (Figure 16 and Figure 17) and

THD is slightly degraded.

The devices are guaranteed without phase reversal.

4.3

Rail-to-rail output

The operational amplifiers’ output levels 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.

4.4

Shutdown function (TSV633 - TSV635)

The operational amplifiers are enabled when the SHDN pin is pulled high. To disable the

amplifiers, the SHDN must be pulled down to VCC-. When in shutdown mode, the amplifiers’

output is in a high impedance state. The SHDN pin must never be left floating, but tied to

VCC+ or VCC-.

Figure 16.

Input offset voltage vs input

common mode at VCC = 1.5 V

Figure 17.

Input offset voltage vs input

common mode at VCC = 5 V

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