DocID023043 Rev 7

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STPA001

Overview

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Overview

The STPA001 is a complementary quad audio power amplifier. It is available in three

different packages, Flexiwatt25 (vertical), Flexiwatt25 (horizontal) and Flexiwatt27. It

embeds four independent amplifiers working in class AB, a standby and a mute pin, a

clipping detector and diagnostics output and, only for the Flexiwatt27 package, an offset

detector pin. The amplifier is fully operational down to a battery voltage of 6 V, without

producing pop noise and continuing to play during battery transitions.

The STPA001 can drive 2 Ω loads and has a very high immunity to disturbs without need of

external components or compensation. It is protected against any kind of short or open

circuit, over-voltage and over-temperature.

1.1

Block diagram and application circuit

Figure 1. Block diagram