I2C-Bus Controlled Dual Channel 43 W/2 Ω, Single Channel 85 W/1 Ω Class-D Power Amplifier with Full Diagnostics

TDF8597TH

The TDF8597 is a dual Bridge-Tied Load (BTL) car audio amplifier comprising an NDMOST-NDMOST output stage based on SOI BCDMOS technology. The TDF8597 fully supports start/stop systems as it can operate at a battery voltage as low as 6 V. The TDF8597 can be controlled with or without I2C. I2C allows control of load detection results and fault conditions to be read. The TDF8597 is a high efficiency class-D amplifier with low dissipation. Due to the low dissipation, the device can be used with a smaller heat sink than standard class AB amplifiers. Six different I2C addresses can be selected with external resistors connected to the ADS and MOD pins. If pin ADS is a short-circuit to ground, the TDF8597 operates in non-I2C mode, and no I2C communication is possible. Use pins EN and ON to switch to operating and mute modes.

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Product Details

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Features

Key Features

  • High-efficiency
  • Low quiescent current
  • Operating voltage from 6 V to 24 V
  • Start/Stop ready: continues to operate without audible disturbance during engine startat a battery voltage as low as 6 V
  • 4 Ω or 2 Ω capable stereo BTL channels or 1 Ω capable mono BTL channel
  • Differential inputs
  • Fast-mode I2C-bus
  • I2C-bus mode with 6 I2C-bus addresses or non-I2C-bus mode operation
  • Clip detect selectable at 0.2 % or 10 % THD
  • Independent short-circuit protection for each channel
  • Advanced short-circuit protection for load, GND and supply
  • Thermal foldback and thermal protection
  • DC-offset protection
  • Selectable AD or BD modulation
  • Advanced clocking:
    • Switchable oscillator clock source: internal for Controller mode or external for Slavemode
    • Spread spectrum mode
    • Phase staggering
    • Frequency hopping
  • No ‘pop noise’ caused by DC output offset voltage
  • I2C-bus mode:

    • Load diagnostic

      Amplifier output to ground and to supply shorts

      Speaker load, open load and shorted load

      Tweeter detection

    • Thermal pre-warning diagnostic level setting
    • Identification of activated protection or warnings
    • Selectable diagnostic information available on DIAG and CLIP pins
  • Qualified in accordance with AEC-Q100

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