Thursday, September 18, 2014
4 x 45 W power amplifier
General description
The TDA8593J is a complementary quad BTL audio power amplifier made in BCDMOS technology. It contains four independent amplifiers in Bridge Tied Load (BTL) configuration. Through the I2C-bus, the diagnostic information of each amplifier and speaker can be read separately. Both front and both rear channel amplifiers can be configured independently in line driver mode with a gain of 20 dB.
Features
- I2C-bus control
- Hardware programmable I2C-bus address
- Can drive a 2 Ω load with a battery voltage of up to 16 V and a 4 Ω load with a battery voltage of up to 18 V
- DC-load detection: open, short and present
- AC-load (tweeter) detection
- Programmable clip detection: 1 % or 3 %
- Programmable thermal protection pre-warning
- Independent short-circuit protection per channel
- Low gain line driver mode (20 dB)
- Loss-of-ground and open VP safe
- All outputs protected from short-circuit to ground, to VP, or across the load
- All pins protected from short-circuit to ground
- Soft thermal clipping to prevent audio holes
- Low battery detection.
Circuit Diagram
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| Circuit diagram for TDA8593 |
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| PCB layout of test and application circuit; components bottom |
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| PCB layout of test and application circuit; copper layer bottom |
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| PCB layout of test and application circuit; components top |
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| PCB layout of test and application circuit; copper layer top |
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