TDA2004R

The STMicroelectronics TDA2004R is a Class B dual audio power amplifier housed in a Multiwatt11 package, specifically engineered for automotive applications like car radio systems. This amplifier supports high output currents up to 3.5 A and is capable of driving low-impedance loads down to 1.6 Ω.

Designed for efficiency and space-saving in automotive audio setups, the TDA2004R requires minimal external components and does not need electrical insulation between the package and heatsink. Internally, it integrates two amplifiers, allowing for stereo output or bridge-mode configurations for increased power.

The TDA2004R operates by amplifying audio signals with relatively low power loss, where each output transistor handles half of the input signal waveform. Its pin configuration includes inputs for two channels, supply voltage rejection ratio filtering, ground, bootstrap connections, and outputs for each channel. The test and application circuit typically involves coupling capacitors for DC blocking, feedback networks for gain and frequency response control, and power supply filtering components.

Outputs are delivered through coupling capacitors to speakers, with series resistors for current sensing and short-circuit protection. This design ensures clean sound and robust performance in demanding automotive environments.