Description
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.
- 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 O or 2 O capable stereo BTL channels or 1 O 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 Master mode or external for Slavemode
- Spread spectrum mode
- Phase staggering
- Frequency hopping
- No ‘pop noise’ caused by DC output offset voltage
- I²C-bus mode:
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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
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- Qualified in accordance with AEC-Q100
