9/12/2014
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:
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| circuit diagram for Dual channel 46 W |
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| circuit diagram for sigle channel 92 W |
Datasheet for TDA1566: Download
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:
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| 2 × 40 W/2 Ω stereo BTL car radio power amplifier |
Overview:
The LA4628 is a 2-channel general-purpose BTL audio power amplifier provided in a miniature package. It was designed for the best possible audio quality and features an extended low band roll-off frequency provided by a newly-developed NF circuit that does not require an external capacitor. Furthermore, crosstalk, which can cause muddiness in the audio output, has been significantly reduced by both circuit and wiring pattern improvements. Thus this amplifier can provide powerful lows an clear highs. Note that this device is pin compatible with the 13.5 W × 2-channel LA4625, and allows end products differentiated by their power rating to share the same printed circuit board.
Features:
- Total output: 20 W + 20 W (at VCC = 13.5 V, RL = 4 Ω,THD = 10%)
- High-fidelity design (fL < 10 Hz, fH = 130 kHz)
- Extremely low impulse noise levels
- An arbitrary amplifier startup time can be set up with external components.
- Full complement of built-in protection circuits (includes circuits that protect against shorting to VCC, shorting to ground, load shorting, overvoltages and excessive temperatures)
Circuit Diagram:
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| Two-Channel 20 W BTL Audio Power Amplifier |
FEATURES
- 2 × 30 W (BTL) Into 6 Ω at 1 kHz 95-dB Dynamic Range (in System With TAS5026) < 0.2% THD+N (in System – 30 W RMS Into 6-Ω Resistive Load)
- Device Power Efficiency Typical >90% Into
- 6-Ω Load
- Self-Protection Design (Including
- Undervoltage, Overtemperature, and Short
- Conditions) With Error Reports
- Internal Gate Drive Supply Voltage Regulator
- EMI Compliant When Used With
- Recommended System Design
DESCRIPTION
The TAS5122 is a high-performance, integrated stereo digital amplifier power stage designed to drive 6-Ω speakers at up to 30 W per channel. The device incorporates TI’s PurePath Digital technology and is used with a digital audio PWM processor (TAS50XX) and a simple, passive demodulation filter to deliver high-quality, high-efficiency, true-digital audio amplification. The efficiency of this digital amplifier is typically greater than 90%. Overcurrent protection, overtemperature protection, and undervoltage protection are built into the TAS5122, safeguarding the device and speakers against
fault conditions that could damage the system.
Circuit Diagram:
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| 30 Watt stereo digital amplifier power stage |
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