TS2012EI datasheet(25/32 Pages) STMICROELECTRONICS

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TS2012EI

Application information

4.7

Consumption in shutdown mode

Between the shutdown pin and GND there is an internal 300 k

 (+-/20%) resistor. This

resistor forces the TS2012EI to be in shutdown when the shutdown input is left floating.

However, this resistor also introduces additional shutdown power consumption if the

shutdown pin voltage is not at 0 V.

With a 0.4 V shutdown voltage pin for example, you must add 0.4 V/300 k

 = 1.3 µA typical

(0.4 V/240 k

 = 1.66 µA maximum) for each shutdown pin to the standby current specified

in Table 6 to Table 8. Of course, this current will be provided by the external control device

for the standby pins.

4.8

Single-ended input configuration

It is possible to use the TS2012EI in a single-ended input configuration. However, input

coupling capacitors are mandatory in this configuration. Figure 39 shows a typical single-

ended input application.

Figure 39. Typical application for single-ended input configuration

TS2012

Left speaker

Right speaker

Cin

Left Input

Cin

Right Input

Standby Control

VCC

Cs1

1uF

VCC

Cs2

0.1uF

Gain Select

Control

Gain

Select

Oscillator

PWM

Gain

Select

Standby

Control

Protection

Circuit

Bridge

Lin+

Lin-

Rin+

Rin-

STBYL

STBYR

Lout+

Lout-

Rout+

Rout-

PVCC

PGND

AGND

AVCC

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