TSV629X datasheet(14/25 Pages) STMICROELECTRONICS

14 / 25 page

Application information

TSV629x, TSV629xA

14/25

Doc ID 16882 Rev 2

4.4

Optimization of DC and AC parameters

These devices use an innovative approach to reduce the spread of the main DC and AC

parameters. An internal adjustment achieves a very narrow spread of current consumption

(29 µA typical, min/max at ±17%). Parameters linked to the current consumption value, such

as GBP, SR and Avd benefit from this narrow dispersion.

4.5

Shutdown function (TSV6293, TSV6295)

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

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

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

VCC+ or VCC-. The turn-on and turn-off times are calculated for an output variation of

200 mV (Figure 21 and Figure 22 show the test configurations).

Figure 21.

Test configuration for turn-on time

(Vout pulled down)

Figure 22.

Test configuration for turn-off time

(Vout pulled down)

+ V

GND

DUT

GND

CC - 0.5 V

+ V

GND

DUT

GND

CC - 0.5 V

Figure 23.

Turn-on time, VCC =5 V,

Vout pulled down, T = 25° C

Figure 24.

Turn-off time, VCC =5V,

Vout pulled down, T = 25° C

Shutdown pulse

Vout

Vcc = 5V

T = 25

°C

connected to GND

Time (

μs)

Shutdown pulse

Vout

Vcc = 5V

T = 25

°C

Time (

μs)

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