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.
- 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 W or 2 W 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 mW series impedance and a maximum supply decoupling capacitor of 2200 mF)
- 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
I2C-bus mode
- DC load detection: open (no load), normal load, line-driver load
- AC load (tweeter) detection
- Detect which load is connected during start-up to allow the system to be configured to select the gain accordingly (e.g. line-driver mode or normal mode).
- Independently selectable soft mute of front (channel 1 and channel 3) and rear channels (channel 2 and channel 4)
- Independently programmable gain (26 dB and 16 dB) of front (channel 1 and channel 3) and rear (channel 2 and channel 4) channels
- Flexible programmable diagnostic levels:
- Programmable clip detect: 2 %, 5 % or 10 %
- Programmable thermal pre-warning
- Selectable information on the DIAG or STB pin:
- The STB pin can be programmed/multiplexed with second clip detection
- Clip information of each channel separately can be directed to the DIAG pin or the STB pin
- Independent enabling of thermal-, clip- or load fault (short across the load, to VP orto ground) available on the DIAG pin
- Offset detection
