TDA8542 2 × 1 W BTL audio amplifier

General Description:

The TDA8542(T) is a two channel audio power amplifier for an output power of 2 × 1 W with an 8 Ω load at a 5 V supply. The circuit contains two BTL amplifiers with a complementary PNP-NPN output stage and standby/mute logic. The TDA8542T comes in a 16 pin SO package and the TDA8542 in a 16 pin DIP package.

Circuit Diagram:

Circuit diagram for TDA8542 2 × 1 W BTL audio amplifier

22 W bridge/stereo audio amplifier with clipping detector

Features:

• Very few external components
• No Boucherot cells
• No bootstrap capacitors
• High output power
• No switch on/off noise
• Very low standby current
• Fixed gain (20 dB stereo)
• Programmable turn-on delay
• Clipping detector
• Protections:
• Output AC-DC short circuit to ground and to supply voltage
• Very inductive loads
• Loudspeaker protection
• Overrating chip temperature
• Load dump voltage
• Fortuitous open ground
• ESD

Description:

The TDA7360 is a new technology class AB Audio Power Amplifier in the Multiwatt® package designed for car radio applications. Thanks to the fully complementary PNP/NPN  output configuration the high power performance  of the TDA7360 is obtained without bootstrap  capacitors.

A delayed turn-on mute circuit eliminates audible  on/off noise, and a novel short circuit protection system prevents spurious intervention with highly  inductive loads. The device provides a circuit for the detection of  clipping in the output stages. The output, an open  collector, is able to drive systems with automatic  volume control.

Circuit Diagram:

22 W bridge/stereo audio amplifier with clipping detector

DUAL BRIDGE AUDIO AMPLIFIER FOR CAR RADIO

CIRCUIT DIAGRAM for DUAL BRIDGE AUDIO AMPLIFIER FOR CAR RADIO

PCB LAYOUT for DUAL BRIDGE AUDIO AMPLIFIER FOR CAR RADIO

2 x 1 W BTL audio amplifier with output channel switching

FEATURES:

• Selection between output channels
• Flexibility in use
• Few external components
• Low saturation voltage of output stage
• Gain can be fixed with external resistors
• Standby mode controlled by CMOS compatible levels
• Low standby current
• No switch-on/switch-off plops
• High supply voltage ripple rejection
• Protected against electrostatic discharge
• Outputs short-circuit safe to ground, VCC and across theload
• Thermally protected.

APPLICATIONS:

• Telecommunication equipment
• Portable consumer products
• Personal computers
• Motor-driver (servo).

GENERAL DESCRIPTION:

The TDA8547(T) is a two channel audio power amplifier for an output power of 2 × 1 W with an 8 Ω load at a 5 V supply. The circuit contains two BTL amplifiers with a complementary PNP-NPN output stage and standby/mute logic. The operating condition of all channels of the device (standby, mute or on) is externally controlled by the MODE pin. With the SELECT pin one of the output channels can be switched in the standby condition. This feature can be used for loudspeaker selection and also reduces the quiescent current consumption. The TDA8547T comes in a SO16 package and the TDA8547 in a DIP16 package.

Circuit Diagram:

Circuit diagram for 2 x 1 W BTL audio amplifier with output channel switching

1 W BTL audio amplifier with digital volume control

FEATURES:

One pin digital volume control

Volume setting with UP/DOWN pulses

Flexibility in use

Few external components

Low saturation voltage of output stage

Standby mode controlled by CMOS compatible levels

Low standby current

No switch-on/switch-off plops

High supply voltage ripple rejection

Protected against electrostatic discharge

Outputs short circuit safe to ground, VP and across the load

Thermally protected.

GENERAL DESCRIPTION:

The TDA8551; TDA8551T is a one channel 1 W Bridge-Tied Load (BTL) audio power  amplifier capable of delivering 1 W output power to an 8 Ω load at THD = 10%  using a 5 V power supply. The circuit contains a BTL  power amplifier, a digital volume control and standby/mute  logic. The TDA8551T comes in an 8 pin SO package and  the TDA8551 in a 8 pin DIP package.

Circuit diagram for 1 W BTL audio amplifier with digital  volume control

Datasheet: TDA8851

2 x 24 W BTL or 4 x 12 W single-ended car amplifier

FEATURES:

Requires very few external components

High output power

Flexibility in use - Quad single-ended or stereo BTL

Low output offset voltage

Fixed gain

Diagnostic facility (distortion, short-circuit and temperature detection)

Good ripple rejection

Mode select switch (operating, mute and standby)

Load dump protection

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

Low power dissipation in any short-circuit condition

Thermally protected

Reverse polarity safe

Electrostatic discharge protection

No switch-on/switch-off plop

Flexible leads

Low thermal resistance

Identical inputs (inverting and non-inverting).

GENERAL DESCRIPTION:

The TDA8564Q is an integrated class-B output amplifier in a 17-lead DIL-bent-SIL power package. It contains 4 × 12 W single-ended or 2 × 24 W bridge amplifiers.

Circuit Diagram:

Circuit diagram for 2 x 24 W BTL

Circuit diagram for 4 x 12 W TDA8564Q

DUAL LOW-NOISE OPERATIONAL AMPLIFIERS

General Description:

The NE5532, NE5532A, SA5532, and SA5532A are high-performance operational amplifiers combining excellent dc and ac characteristics. They feature very low noise, high output-drive capability, high unity-gain and maximum-output-swing bandwidths, low distortion, high slew rate, input-protection diodes, and output short-circuit protection. These operational amplifiers are compensated internally for unity-gain operation. These devices have specified maximum limits for equivalent input noise voltage.

Circuit Diagram:

DUAL LOW-NOISE OPERATIONAL AMPLIFIERS