TDA8594: I²C-bus controlled 4 x 50 W power amplifier ARCHIVED

General

• 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
• Speaker fault detection
• Independent short-circuit protection per channel
• Loss of ground and open V_P safe (with 200 mΩ series impedance and a supply decoupling capacitor of 2200 μF 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

I²C-bus mode

• DC load detection: open-circuit, short-circuit and load present
• AC load (tweeter) detection
• During start-up, can detect which load is connected so the appropriate gain can be selected without audio pop
• Independently selectable soft mute of front channels (channel 1 and channel 3) and rear channels (channel 2 and channel 4)
• Programmable gain (26 dB and 16 dB) of front channels (channel 1 and channel 3) and rear channels (channel 2 and channel 4)
• Fully programmable diagnostic levels can be set:
  • Programmable clip detection: 2 %, 5 % or 10 %
  • Programmable thermal pre-warning
• Selectable information on the DIAG and STB pins:
  • The STB pin can be programmed/multiplexed with second clip detection
  • Clip information of each channel can be directed separately to the DIAG pin or the STB pin
  • Independent enabling of thermal, clip or load fault detection (short across or to V_P or to ground) on DIAG pin