Overview
The NXP TDF8532HH/N2K is a member of the TDF853x family of ultra-efficient Class-D amplifiers designed to deliver high-quality audio in automotive applications. These amplifiers are optimized for use in vehicles that support 5.5 V stop-start requirements and are known for their seamless audio experience. The TDF8532HH/N2K specifically features four channels, making it suitable for a variety of automotive sound systems and active noise-cancellation applications.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 4 |
| Supply Voltage | 5.5 V to 25 V |
| Max Output Power per Channel | 80 W (at 4 Ω load) |
| Total Harmonic Distortion + Noise (THD+N) | 0.02% |
| Noise Level | 26 µV |
| Idle Power Dissipation | 2.8 W |
| Load Dump Protection | Up to 50 V |
| Over- and Undervoltage Protection | Yes |
| Thermal Protection | Yes |
Key Features
- Four Class-D BTL channels capable of driving 2 or 4 Ω loads, with two channels combinable to drive 1 Ω loads.
- Feedback after low-pass filter for lower BOM cost and better audio quality.
- Digital input in TDM/I²S format for easy board layout.
- Line-driver mode to drive an external amplifier via direct loudspeaker cable.
- Diagnostic features including startup diagnostic, supply voltage feedback, selectable clip detection, and IEEE 1194.1-compliant board-level boundary scan.
- Protection features such as independent output current per channel with selectable thresholds, load dump protection, over- and undervoltage protection, and thermal fold-back and thermal protection.
- Interleaved power stages (optional) for improved EMC and reduced output-filter cost/complexity.
- Quality in accordance with AEC-Q100.
Applications
- Automotive head-unit radios.
- Automotive sound systems.
- Automotive-engine sound design.
- Active noise-cancellation systems.
- Generation of ambient and/or engine sounds in electric vehicles.
Q & A
- What is the TDF8532HH/N2K used for? The TDF8532HH/N2K is used for delivering high-quality audio in automotive applications, including head-unit radios, sound systems, and active noise-cancellation systems.
- How many channels does the TDF8532HH/N2K have? The TDF8532HH/N2K has four Class-D BTL channels.
- What is the maximum output power per channel of the TDF8532HH/N2K? The maximum output power per channel is 80 W at a 4 Ω load.
- What is the supply voltage range of the TDF8532HH/N2K? The supply voltage range is from 5.5 V to 25 V.
- Does the TDF8532HH/N2K support interleaved power stages? Yes, the TDF8532HH/N2K supports interleaved power stages (optional) for improved EMC and reduced output-filter cost/complexity.
- What diagnostic features does the TDF8532HH/N2K have? The TDF8532HH/N2K includes startup diagnostic, supply voltage feedback, selectable clip detection, and IEEE 1194.1-compliant board-level boundary scan.
- Is the TDF8532HH/N2K compliant with automotive standards? Yes, the TDF8532HH/N2K is compliant with AEC-Q100 standards.
- What kind of protection does the TDF8532HH/N2K offer? The TDF8532HH/N2K offers load dump protection, over- and undervoltage protection, and thermal protection.
- Can the TDF8532HH/N2K drive external amplifiers? Yes, the TDF8532HH/N2K can drive external amplifiers via direct loudspeaker cable in line-driver mode.
- What is the noise level of the TDF8532HH/N2K? The noise level is 26 µV.
