|
TDA8594 Datasheet, PDF (1/48 Pages) NXP Semiconductors – I2C-bus controlled 4 X 50 W power amplifier | |||
|
TDA8594
I2C-bus controlled 4 à 50 W power ampliï¬er
Rev. 02 â 11 December 2007
Product data sheet
1. General description
The TDA8594 is a complementary quad Bridge Tied Load (BTL) audio power ampliï¬er
made in BCDMOS technology. It contains four independent ampliï¬ers in BTL
conï¬guration. 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 ampliï¬er (output offset, load or no load, short-circuit or speaker incorrectly
connected) can be read separately.
2. Features
2.1 General
I Operates in legacy mode (non I2C-bus) and I2C-bus mode (3.3 V and 5 V compliant)
I Three hardware-programmable I2C-bus addresses
I Drives 4 ⦠or 2 ⦠loads
I Speaker fault detection
I Independent short-circuit protection per channel
I Loss of ground and open VP safe (with 200 m⦠series impedance and a supply
decoupling capacitor of 2200 µF maximum)
I All outputs short-circuit proof to ground, supply voltage and across the load
I All pins short-circuit proof to ground
I Temperature-controlled gain reduction to prevent audio holes at high junction
temperatures
I Low battery voltage detection
I Offset detection
I This part has been qualiï¬ed in accordance with AEC-Q100
2.2 I2C-bus mode
I DC load detection: open-circuit, short-circuit and load present
I AC load (tweeter) detection
I During start-up, can detect which load is connected so the appropriate gain can be
selected without audio pop
I Independently selectable soft mute of front channels (channel 1 and channel 3) and
rear channels (channel 2 and channel 4)
I Programmable gain (26 dB and 16 dB) of front channels (channel 1 and channel 3)
and rear channels (channel 2 and channel 4)
|
▷ |