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

Audio Power Amplifier Series Stereo 60W, Mono 120W Audio Power Amplifier

Audio Power Amplifier Series Stereo 60W, Mono 120W Audio Power Amplifier

Datasheet: Download

Dual channel 46 W/2 Ω, single channel 92 W/1 Ω amplifier

General description:

The TDA1566 is a car audio power amplifier with a complementary output stage realized in BCDMOS. The TDA1566 has two Bridge Tied Load (BTL) output stages and comes in a HSOP24 or DBS27P package. The TDA1566 can be controlled with or without I2C-bus. With I2C-bus control gain settings per channel and diagnostic trigger levels can be selected. Failure conditions as well as load identification can be read with I2C-bus. The load identification detects whether the outputs of a BTL channel are connected with a DC or AC load and discriminates between a speaker load, a line driver load and an open (unconnected) load. The TDA1566 can be configured in a single BTL mode and drive a 1 Ω load. For the single BTL mode it is necessary to connect on the Printed-Circuit Board (PCB) the outputs of both BTL channels in parallel.

Features:

• Operates in I2C-bus mode and non-I2C-bus mode
• TH version: four I2C-bus addresses controlled by two pins; J version: two I2C-bus addresses controlled by one pin
• Two 4 Ω or 2 Ω capable BTL channels or one 1 Ω capable BTL channel
• Low offset
• Pop free off/standby/mute/operating mode transitions
• Speaker fault detection
• Selectable gain (26 dB and 16 dB)
• In I2C-bus mode:
• DC load detection: open, short and speaker or line driver present
• AC load (tweeter) detection
• Programmable trigger levels for DC and AC load detection
• Per channel programmable gain (26 dB and 16 dB, selectable per channel)
• Selectable diagnostic levels for clip detection and thermal pre-warning
• Selectable information on the DIAG pin for clip information of each channel separately and independent enabling of thermal-, offset- or load fault
• Independent short-circuit protection per channel
• Loss of ground and open VP safe
• All outputs short-circuit proof to VP, GND and across the load
• All pins short-circuit proof to ground
• Temperature controlled gain reduction at high junction temperatures

Circuit Diagram:

circuit diagram for Dual channel 46 W

circuit diagram for sigle channel 92 W

Datasheet for TDA1566: Download

Stereo 45 Watt Amplifier circuit diagram

Circuit Diagram Stereo 45 Watt Amplifier circuit diagram

2 × 40 W/2 Ω stereo BTL car radio power amplifier

FEATURES:

• Requires very few external components
• High output power
• 4 Ω and 2 Ω load impedance
• 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
• Short-circuit safe to ground, to VP and across the load
• 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.

GENERAL DESCRIPTION:

The TDA8563AQ is an integrated class-B output amplifier in a 13-lead single-in-line (SIL) power package. It contains 2 × 40 W/2 Ω amplifiers in BTL configuration. The device is primarily developed for car radio applications.

Circuit Diagram:

2 × 40 W/2 Ω stereo BTL car radio power amplifier