TDA1554 Audio Amplifier: Datasheet, Applications and Circuit

There are 17 pins on this audio power amplifier. TDA1554Q contains four audio amplifiers with differential inputs, as previously described. With two noninverting and two inverting pins, we can differentially input data. As a result, it can be used in single-ended or bridge mode configurations. Check out the samples at the conclusion of the tutorial for further information.

TDA1554 Pinout

TDA1554 Symbol

TDA1554 Footprint

TDA1554 is a power amplifier IC with an inbuilt Class-B output amplifier that can handle 4*11W single-ended or 2*22W dual-ended power. TDA1554 is available in a single-in-line package with 17 leads. A 4*11W single-ended or 2*22W bridge amplifier is included in the internal circuitry. Two of the four amplifiers are inverting, whereas the other two are not. Additionally, each amplifier has a 20dB gain (26dB in BTL). Mute/stand-by is likewise available on the TDA1554.

• Requires very few external components

• Flexibility in use − Quad single-ended or stereo BTL

• High output power

• Low offset voltage at outputs (important for BTL)

• Fixed gain

• Good ripple rejection

• Mute/stand-by switch

• Load dump protection

• AC and DC short-circuit-safe to ground and VP

• Thermally protected

• Reverse polarity safe

• Capability to handle high energy on outputs (VP = 0 V)

• Protected against electrostatic discharge

• No switch-on/switch-off plop

• Low thermal resistance

• Identical inputs (inverting and non-inverting)

• Flexible leads

• Stereo amplifiers

• Home audio circuits

• Car radios

This IC is designed for usage in automobile radios. Its outputs have a low offset voltage, which is critical for BTL applications. It can manage significant energy outputs. This IC is utilized in 22W stereo amplifiers and 11W single-ended home audio circuits.

TDA1554 is an amplifier IC that may be used to create stereo audio power amplifier circuits of 2*22 watts and 4*11 watts. A strong heatsink is required because the circuit dissipated roughly 28 watts of heat. At full loudness, the circuit uses 12 volts and 5 amps. When the volume is reduced, the current consumption is reduced, and less heat is dissipated.

Now, as we know we can use this IC for 2*22 watts and 4* 11-watt stereo audio power amplifier circuits. The connection diagram for both is given below:

2*22 Watt Stereo Audio Power Amplifier Circuit

The BTL arrangement is represented in the circuit above. In both circuits, the components are nearly identical. Each speaker is driven by a single MOSFET half-bridge in single-ended mode, while in bridge-tied load (BTL); the speaker is connected between the two MOSFET half-bridges.

4*11 Watt Stereo Audio Power Amplifier Circuit

TDA1554 is used in the circuit above, which is a 4-channel 11-watt home audio circuit. There are four channels on each amplifier. It uses a DC voltage range of 12 to 18 volts to operate. A 12-volt power supply capable of delivering 2 Amps can be used to provide this voltage supply. 

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