2 x 23 W high efficiency car radio power amplifier

FEATURES:

Low dissipation due to switching from Single-Ended (SE) to Bridge-Tied Load (BTL) mode

High Common Mode Rejection Ratio (CMRR)

Mute/standby/operating/SE-only (mode select pin)

Zero crossing mute and standby circuit

Load dump protection circuit

Short-circuit safe to ground, to supply voltage and across load

Loudspeaker protection circuit

Device switches to single-ended operation at excessive junction temperatures.

GENERAL DESCRIPTION:

The TDA1561Q is a monolithic power amplifier in a 13 lead single-in-line (SIL) plastic power package. It contains two identical 23 W amplifiers. The dissipation is minimized by switching from SE to BTL mode, only when a higher output voltage swing is needed. The device is primarily developed for car radio applications.

Circuit Diagram:

2 x 23 W high efficiency car radio power amplifier

Datasheet for TDA1561Q: Download

Comments

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Features: Multipower BCD technology DMOS power output High output power capability 4 x 25 W / 4  @ 14.4 V, 1 kHz, 10 % THD, 4 x 35 W EIAJ Max. output power 4 x 60 W / 2  Full I2C bus driving: Standby Independent front/rear soft play/mute Selectable gain 26 dB - 12 dB (for low noise line output function) I2C bus digital diagnostics Full fault protection DC offset detection Four independent short circuit protection Clipping detector ESD protection Description: The TDA7561 is a BCD technology quad bridge type of car radio amplifier in Flexiwatt25 package specially intended for car radio applications. Thanks to the DMOS output stage the TDA7561 has a very low distortion allowing a clear powerful sound. This device is equipped with a full diagnostics array that communicates the status of each speaker through the I2C bus.The possibility to control the configuration and behaviour of the ...

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