描述 Description

The TDF8597 is a dual Bridge-Tied Load (BTL) car audio amplifier comprising anNDMOST-NDMOST output stage based on SOI BCDMOS technology. The TDF8597 fullysupports start/stop systems as it can operate at a battery voltage as low as 6 V. TheTDF8597 can be controlled with or without I2C. I2C allows control of load detection resultsand fault conditions to be read. The TDF8597 is a high efficiency class-D amplifier withlow dissipation. Due to the low dissipation, the device can be used with a smaller heat sinkthan standard class AB amplifiers. Six different I2C addresses can be selected withexternal resistors connected to the ADS and MOD pins. If pin ADS is a short-circuit toground, 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.

特性 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 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:
? 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