22 Watt Car Subwoofer Amplifier

Circuit Description

     The stereo signals coming from the line outputs of the car radio amplifier are mixed at the input and, after the Level Control, the signal enters the buffer IC1A and can be phase reversed by means of SW1. This control can be useful to allow the subwoofer to be in phase with the loudspeakers of the existing car radio. Then, a 12dB/octave variable frequency Low Pass filter built around IC1B, Q1 and related components follows, allowing to adjust precisely the low pass frequency from 70 to 150Hz. Q2, R17 and C9 form a simple dc voltage stabilizer for the input and filter circuitry, useful to avoid positive rail interaction from the power amplifier to low level sections.

     This unit is intended to be connected to an existing car stereo amplifier, adding the often required extra "punch" to the music by driving a subwoofer. As very low frequencies are omnidirectional, a single amplifier is necessary to drive this dedicated loudspeaker. The power amplifier used is a good and cheap BTL (Bridge Tied Load) 13 pin IC made by Philips (now NXP Semiconductors) requiring a very low parts count and capable of delivering about 22W into a 4 Ohm load at the standard car battery voltage of 14.4V.

Circuit Diagram

Parts list:

• P1_____________10K Log Potentiometer
• P2_____________22K Dual gang Linear Potentiometer
• R1,R4___________1K 1/4W Resistors
• R2,R3,R5,R6____10K 1/4W Resistors
• R7,R8_________100K 1/4W Resistors
• R9,R10,R13_____47K 1/4W Resistors
• R11,R12________15K 1/4W Resistors
• R14,R15,R17____47K 1/4W Resistors
• R16_____________6K8 1/4W Resistor
• R18_____________1K5 1/4W Resistor
• C1,C2,C3,C6_____4µ7 25V Electrolytic Capacitors
• C4,C5__________68nF 63V Polyester Capacitors
• C7_____________33nF 63V Polyester Capacitor
• C8,C9_________220µF 25V Electrolytic Capacitors
• C10___________470nF 63V Polyester Capacitor
• C11___________100nF 63V Polyester Capacitor
• C12__________2200µF 25V Electrolytic Capacitor
• D1______________LED any color and type
• Q1,Q2_________BC547 45V 100mA NPN Transistors
• IC1___________TL072 Dual BIFET Op-Amp
• IC2_________TDA1516BQ 24W BTL Car Radio Power Amplifier IC
• SW1____________DPDT toggle or slide Switch
• SW2____________SPST toggle or slide Switch capable of withstanding a current of at least 3A
• J1,J2__________RCA audio input sockets
• SPKR___________4 Ohm Woofer or two 8 Ohm Woofers wired in parallel

Technical data:

• Output power (1KHz sinewave): 22W RMS into 4 Ohms at 14.4V supply
• Sensitivity: 250mV input for full output
• Frequency response: 20Hz to 70Hz -3dB with the cursor of P2 fully rotated towards R12, 20Hz to 150Hz -3dB with the cursor of P2 fully rotated towards R11
• Total harmonic distortion: 17W RMS: 0.5% 22W RMS: 10%

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TDA8560Q Audio amplifier 2x40W

TDA8560Q general description:

Unfortunately, some of the proposed scheme in the network and even a scheme recommended by the developer (Philips), fail to achieve the desired result. As an example of how not to suggest that you include the TDA8560 material published on Online Soldering: Car Amplifier 2x40 Watt (I should note that everything except the input circuits and the number of points on diet, still deserves attention). the initial inclusion of IMS (at power up, the load is connected and there is no input signal) can throw you into a state of perplexity / mild shock (it depends on the degree of hope is for your TDA). Chip is unstable, there are noises when the input signal is amplified last weakly and passed with distortions. IC bypass surgery fixed resistor at the input, the other measures in consultation with the source device does not help. Why and what to do? Really caught Palen chip and will have to buy a new one? Not so fast! The fact that Philips did not include measures to prevent the self-excitation of the IC, but I think they know about it, but do not tell anyone (not good, gentlemen!) Rid chip excitement can (and should) in a way that is not described here. This is so far, my little secret. Usually TDA8560 include approximately recommend the following scheme: TDA8560Q Audio amplifier 2x40W

TDA8560Q Features:

• Supply voltage: 6 - 18; typical 14.4 V.
• The peak output current: 7.5 A.
• The current in idle mode: 120 mA.
• Long-term power output, with
• RL = 4 ohms, THD = 10%, F = 1 kHz, 25 W,
• RL = 2 ohms, THD = 10%, F = 1kHz: 40W.
• Voltage gain, Au: 40 dB.
• Input Impedance: 30 ohms.
• Input Sensitivity: 100 mV.
• Frequency response: 20 - 20000 Hz.
• Requires very few external components
• High output power
• 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.

TDA8560Q amplifier diagram, circuit:

TDA8560Q amplifier diagram, circuit

TDA8560Q layout:

TDA8560Q amplifier Layout

TDA8560Q amplifier pcb

Datasheet for TDA8560Q: Download

TDA8569Q Audio Amplifier 4 x 40W

TDA8569Q general description:

The TDA8569Q is an integrated class-B output amplifier in a 23-lead Single-In-Line (SIL) plastic power package. It contains four amplifiers in Bridge-Tied Load (BTL) configuration, each with a gain of 26 dB. The output power is 4 × 40 W in a 2 Ω load.  TDA8569Q Audio Amplifier 4 x 40W

TDA8569Q features:

Capable of driving 2 Ω loads

Requires very few external components

High output power

Low output offset voltage

Fixed gain

Diagnostic facility (distortion, short-circuit and temperature pre-warning)

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

Pin compatible with the TDA8567Q.

TDA8569Q circuit diagram:

4 x 40W TDA8569Q Audio Amplifier 

TDA8569Q layout:

layout for 4 x 40W TDA8569Q Audio Amplifier 

pcb for layout for 4 x 40W TDA8569Q Audio Amplifier

TDA2005 Audio Amplifier 2x10w

TDA2005 description:

The TDA2005 is a class B dual audio power amplifier in Multiwatt11 package specifically designed for car radio applications. Power booster amplifiers can be easily designed  using this device that provides a high current  capability (up to 3.5 A) and can drive very low  impedance loads (down to 1.6  in stereo  applications) obtaining an output power of more than 20 W (bridge configuration). TDA2005 Audio Amplifier 2x10w

TDA2005 features:

High output power:
Po = 10 + 10 W @ RL = 2 , THD = 10 %
Po = 20 W @ RL = 4 , THD = 10 %.
Protection against:
Output DC and AC short circuit to ground
Overrating chip temperature
Load dump voltage surge
Fortuitous open ground
Very inductive loads
Loudspeaker protection during short circuit for one wire to ground

TDA2005 circuit diagram:

TDA2005 Audio Amplifier 2x10w

TDA2005 layout:

PCB TDA2005 Audio Amplifier 2x10w

Layout TDA2005 Audio Amplifier 2x10w

Audio Power Amplifier 5.8W

General Description:

The NTE1285 and NTE1286 are audio power amplifiers in a 7–Lead SIP type package designed especially for car radio and car stereo applications. These devices are encapsulated in newly developed small packages featuring low thermal resistance, providing easy design for 2Ω. At 14.4V the devices give output power of 7W with RL = 4Ω and 11W with RL = 2Ω.

Features:

High Output Power

Low Transient Noise at Power Supplu Switch ON

Mirror Image Pin Configurations

Protection Circuits are Provided for the Following:

Load Dump Protection

Thermal Shut–Down Protection

Overvoltage Protection

Output Terminal Short–Circuit Protection

Pinout:

Audio Power Amplifier 5.8W

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

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

4 x 45W Audio Power Amplifier

General description:

The TDA8595 is a complementary quad Bridge Tied Load (BTL) audio power amplifier made in BCDMOS technology. It contains four independent amplifiers in BTL configuration. Through the I2C-bus, diagnosis of temperature warning and clipping level is fully programmable and the information available via two diagnostic pins is selectable. The status of each amplifier (output offset, load or no load, short-circuit or speaker incorrectly connected) can be read separately.

Features and benefits:

• Operates in legacy mode (non I2C-bus) and I2C-bus mode (3.3 V and 5 V compliant)
• Three hardware-programmable I2C-bus addresses
• Drive 4  or 2  loads
• Speaker fault detection
• Independent short-circuit protection per channel
• Loss of ground and open VP safe (with 150 m series impedance and a supply  decoupling capacitor of 2200 F maximum)
• All outputs short-circuit proof to ground, supply voltage and across the load
• All pins short-circuit proof to ground
• Temperature-controlled gain reduction to prevent audio holes at high junction temperatures
• Low battery voltage detection
• Offset detection
• This part has been qualified in accordance with AEC-Q100

Circuit Diagram:

Circuit Diagram for 4 x 45W Audio Power Amplifier

Datasheet for TDA8595: Download

4x45W Stereo Power Amplifier Circuit Diagram TDA8596

General description:

The TDA8596 is a quad Bridge Tied Load (BTL) audio power amplifier with symmetrical inputs, made in BCDMOS technology. It contains four independent amplifier channels in BTL configuration with complementary (PMOST/NMOST) output stages. Temperature warning and output signal clipping diagnosis is possible via the I2C-bus and via the diagnostic pins (DIAG and STB pin). The temperature pre-warning level and clip detection levels can be programmed via the I2C-bus. The status of each amplifier channel (i.e. output offset, load connected or not, short circuit condition at the output pins) can be read out separately.

Features

• Operates in legacy mode (non I2C-bus) and I2C-bus mode (3.3 V and 5 V compliant)
• Three hardware-programmable I2C-bus addresses
• Drives 4 Ω or 2 Ω loads
• Balanced/symmetrical inputs
• Speaker fault detection
• Programmable gain (26 dB and 16 dB) also available in legacy mode
• Independent short circuit protection per channel
• Loss of ground and loss of VP safe (with 300 mΩ series impedance and a maximum supply decoupling capacitor of 2200 µF)
• All outputs are short-circuit proof to ground, supply voltage and across the load
• All pins are short circuit proof to ground
• Temperature-controlled gain reduction to prevent audio holes at high junction temperatures
• Low battery voltage detection
• Qualified in accordance with AEC-Q100

Circuit Diagram:

4x45W Stereo Power Amplifier Circuit Diagram TDA8596

Datasheet for TDA8596: Download

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

General description:

The TDA8566 is an integrated class-B output amplifier which is available in several packages. TDA8566TH is contained in a 20-lead small outline plastic package. The TDA8566TH1 is a 24-lead small outline plastic package which is pin compatible with the I2C-bus controlled amplifier TDA1566TH for one board layout. TDA8566Q is a 17-pinDIL-bent-SIL package. The device contains 2 amplifiers in a Bridge-Tied Load (BTL) configuration. The output power is 2 × 25 W in a 4 Ω load or 2 × 40 W in a 2 Ω load. It has a differential input stage and 2 diagnostic outputs. The device is primarily developed for car radio applications.

Features:

Differential inputs

Very high Common Mode Rejection Ratio (CMRR)

High common mode input signal handling

Requires very few external components

High output power

4 Ω and 2 Ω load driving capability

Low offset voltage at output

Fixed gain

Diagnostic facility (distortion, short-circuit and temperature pre-warning)

Good ripple rejection

Mode select switch (operating, mute and standby)

Load dump protection

Short-circuit proof to ground, to VP and across the load

Low power dissipation in any short-circuit condition

Thermally protected

Reverse polarity safe

Protected against electrostatic discharge

No switch-on/switch-off plops

Low thermal resistance

TDA8566TH1 is pin compatible with TDA1566TH

Circuit Diagram:

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

MAX. OUTPUT POWER 4x72W/2Ω TDA7564

Features:
DMOS POWER OUTPUT
■ NON-SWITCHING HI-EFFICIENCY
■ HIGH OUTPUT POWER CAPABILITY 4x28W/4Ω
@ 14.4V, 1KHZ, 10% THD, 4x40W EIAJ
■ MAX. OUTPUT POWER 4x72W/2Ω
■ FULL I2C BUS DRIVING:
– ST-BY
– INDEPENDENT FRONT/REAR SOFT PLAY/
MUTE
– SELECTABLE GAIN 26dB - 12dB (FOR
LOW NOISE LINE OUTPUT FUNCTION)
– HIGH EFFICIENCY ENABLE/DISABLE
– I2C BUS DIGITAL DIAGNOSTICS
■ FULL FAULT PROTECTION
■ DC OFFSET DETECTION
■ FOUR INDEPENDENT SHORT CIRCUIT
PROTECTION
■ CLIPPING DETE

Circuit Diagram:

4 x 70 W circuit diagram TDA7564

45W/2Ω BRIDGE CAR RADIO AMPLIFIER WITH DIAGNOSTIC FACILITY

Circuit Diagram:

TDA7396 circuit diagram

22W BRIDGE / STEREO AUDIO AMPLIFIER WITH CLIPPING DETECTOR TDA7360

General Description:

TDA7360 is a new technology class AB Audio Power Amplifier in the Multiwatt package
designed for car radio applications.

Circuit Diagram

TDA7360 bridge

TDA7360 stereo

22W BRIDGE-STEREO AMPLIFIER FOR CAR RADIO TDA7350

Features

• VERY FEW EXTERNAL COMPONENTS
• NO BOUCHEROT CELLS
• NO BOOSTRAP CAPACITORS
• HIGH OUTPUT POWER
• NO SWITCH ON/OFF NOISE
• VERY LOW STAND-BY CURRENT
• FIXED GAIN (30dB STEREO)
• PROGRAMMABLE TURN-ON DELAY
• 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

Circuit Diagram

22W BRIDGE-STEREO AMPLIFIER FOR CAR RADIO TDA7350

10W CAR RADIO AUDIO AMPLIFIER

DESCRIPTION:

The TDA 2003 hasimproved performancewith the same pin configuration as the TDA 2002. The additional features of TDA 2002, very low numberof externalcomponents,ease of assembly, space and cost saving, are maintained. Thedeviceprovidesa high outputcurrentcapability (up to 3.5A) very low harmonic and cross-over distortion. Completely safe operation is guaranteed due to protectionagainst DCand ACshort circuit between all pins and ground,thermal over-range,load dump voltage surge up to 40V and fortuitous open ground.

Circuit diagram:

Circuit diagram 10W CAR RADIO AUDIO AMPLIFIER

2 x 40 W car radio power amplifier

FEATURES

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

Differential inputs with high Common Mode Rejection Ratio (CMRR)

Mute, standby or operating mode selectable by pin

Load dump protection circuit

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

Loudspeaker protection circuit

Thermal protection at high junction temperature

Device switches to single-ended operation at high junction temperature

Clip detection at 2.5 % THD

Diagnostic signal indicating clipping, short-circuit protection and pre-warning of thermal protection.

GENERAL DESCRIPTION

The TDA1565TH is a monolithic power amplifier in a 20-lead heatsink small outline plastic package. It contains two identical 40 W amplifiers. Power dissipation is minimized by switching from SE to BTL mode only when a higher output voltage swing is needed. The device is developed primarily for car radio applications.

Circuit Diagram:

Circuit diagram 2 x 40 W car radio power amplifier

PCB layout:

PCB layout TDA1564 2 x 40 W car radio power amplifier

12 to 20 W Audio Power Amplifier

Features:

• Thermal protection
• Low intermodulationa distortion
• Low transient intermodulation distortion
• Built-in output current limiter
• Low input offset voltage
• Output stage with low cross-over distortion
• SIL power package

Circuit Diagram:

Circuit Diagram

24 W BTL or 2 x 12 W stereo car radio power amplifier

General Description:

The TDA1515BQ is a monolithic integrated class-B output amplifier in a 13-lead single in-line (SIL) plastic power package. The device is primarily developed for car radio applications, and also to drive low-impedance loads (down to 1,6 Ω). At a supply voltage VP = 14,4 V, an output power of 24 W can be delivered into a 4 Ω BTL (Bridge Tied Load), or, when used as stereo amplifier, it delivers 2 × 12 W into 2 Ω or 2 × 7 W into 4 Ω.

Features:

• flexibility in use − mono BTL as well as stereo
• high output power
• low offset voltage at the output (important for BTL)
• large usable gain variation
• very good ripple rejection
• internal limited bandwidth for high frequencies
• low stand-by current possibility (typ. 1 µA), to simplify required switches; TTL drive possible
• low number and small sized external components
• high reliability.
• The following currently required protections are incorporated in the circuit. These protections also have positive influence on reliability in the applications.
• load dump protection
• a.c. and d.c. short-circuit safe to ground up to VP = 18 V
• thermal protection
• speaker protection in bridge configuration
• SOAR protection
• outputs short-circuit safe to ground in BTL
• reverse polarity safe.

Circuit description:

car radio power amplifier mono

car radio power amplifier stereo

24 W BTL or 2 x 12 W stereo car radio power amplifier

GENERAL DESCRIPTION

The TDA1510AQ is a class-B integrated output amplifier encapsulated in a 13-lead single in-line (SlL) plastic power package. Developed primarily for car radio application, the device can also be used to drive low impedance loads (down to 1,6 Ω). With a supply voltage (VP) of 14,4 V, an output power of 24 W can be delivered into a 4 Ω Bridge Tied Load (BTL), or when used as a stereo amplifier, 2 × 12 W into 2 Ω or 2 × 7 W into 4 Ω.

Features

• Flexibility − stereo as well as mono BTL
• Low offset voltage at the output (important for BTL)
• Load dump protection
• A.C. short-circuit-safe to ground
• Low number, small sized external components
• Internal limiting of bandwidth for high frequencies
• High output power
• Large useable gain variation
• Good ripple rejection
• Thermal protection
• Low stand-by current possibility
• High reliability.

Circuit diagram:

BTL circuit  car radio power amplifier

Stereo Circuit  car radio power amplifier

Datasheet for TDA1510: Download

12 W car radio power amplifier

General Description

The TDA1020 is a monolithic integrated 12 W audio amplifier in a 9-lead single in-line (SIL) plastic package. The device is primarily developed as a car radio amplifier. At a supply voltage of VP= 14,4 V, an output power of 7 W can be delivered into a 4 Ω load and 12 W into 2 Ω. To avoid interferences and car ignition signals coming from the supply lines into the IC, frequency limiting is used beyond the audio spectrum in the preamplifier and the power amplifier. The maximum supply voltage of 18 V makes the IC also suitable for mains-fed radio receivers, tape recorders or record players. However, if the supply voltage is increased above 18 V (< 45 V), the device will not be damaged (load dump protected). Also a short-circuiting of the output to ground (a.c.) will not destroy the device. Thermal protection is built-in. As a special feature, the circuit has a low stand-by current possibility.

Circuit Diagram:

12 W car radio power amplifier

Datasheet for TDA1020: Download