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Class-D amplifiers for an A+ audio experience[939775017613]
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I2C-Bus Controlled Quad Channel 45 W / 2 Ω Class-D Power Amplifier with Full Diagnostics
The TDF8530 is a quad Bridge-Tied Load (BTL) car audio amplifier comprising an NDMOST-NDMOST output stage based on SOI BCDMOS technology. Low power dissipation enables the TDF8530 high-efficiency, class-D amplifier to be used with a smaller heat sink than those normally used with standard class-AB amplifiers.
The TDF8530 can operate in either non-I²C-bus mode or I²C-bus mode. When in I²C-bus mode, DC load detection results and fault conditions can be easily read back from the device. Up to 12 I²C-bus addresses can be selected depending on the value of the external resistors connected to pins ADS and MOD.
When pin ADS is short circuited to ground, the TDF8530 operates in non-I²C-bus mode. Switching between Operating mode and Mute mode in non-I²C-bus mode is only possible using pins EN and SEL_MUTE.
製品詳細
Features
Key Features
- High-efficiency
- Low quiescent current
- Operating voltage from 6 V to 24 V
- 4 Ω or 2 Ω capable BTL channels
- Fast-mode I²C-bus
- I²C-bus mode with 12 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
- Load dump protection to 50 V
- 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 Target mode
- Spread spectrum mode
- Phase staggering
- Frequency hopping
- No ‘pop noise’ caused by DC output offset voltage
- I²C-bus mode:
- Load diagnostics
- Speaker load, open load and shorted load
- Amplifier output to ground and to supply shorts
- Tweeter detection
- Thermal pre-warning diagnostic level setting
- Identification of activated protections or warnings
- Selectable diagnostic information available using DIAG pin
- Load diagnostics
- Qualified in accordance with AEC-Q100
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