Overview
The NXP TDF8532HH/N3K is a high-performance Class-D audio amplifier designed for automotive applications. It is part of the TDF853x family, known for delivering unparalleled sound quality and reducing system costs. This amplifier is particularly suited for use in automotive head-unit radios, sound systems, and active noise-cancellation systems.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 4 |
| Supply Voltage | 5.5 V to 25 V |
| Maximum Output Power per Channel | 80 W @ 2 Ω |
| Total Harmonic Distortion + Noise (THD+N) | 0.02 % |
| Noise Floor | 26 µV |
| Idle Power Dissipation | 2.8 W |
| Operating Temperature | -40°C to 85°C |
| Package Type | 100-HLQFP |
Key Features
- Three, four, or five 2 or 4 Ω load Class-D BTL channels, with the ability for two BTL channels to combine and drive 1 Ω loads.
- Feedback after low-pass filter for lower BOM cost and better audio quality.
- Digital input in TDM/I²S format to ensure easy board layout.
- Line-driver mode to drive an external amplifier via direct loudspeaker cable.
- Diagnostic features including startup diagnostic for AC and DC coupled loads, supply voltage feedback with 8-bit resolution, and selectable clip detection.
- Protection features such as independent output current per channel with selectable thresholds, load dump protection (50 V), over- and undervoltage protection, and thermal fold-back and thermal protection.
- Interleaved power stages (optional) for improved EMC and reduced output-filter cost/complexity.
- Compliance with AEC-Q100 automotive quality standards.
Applications
- Automotive head-unit radios
- Automotive sound systems
- Active noise-cancellation systems
- Automotive-engine sound design, particularly in electric vehicles to generate ambient and/or engine sounds.
Q & A
- What is the TDF8532HH/N3K used for?
The TDF8532HH/N3K is used in automotive applications such as head-unit radios, sound systems, and active noise-cancellation systems.
- How many channels does the TDF8532HH/N3K have?
The TDF8532HH/N3K has four Class-D BTL channels.
- What is the maximum output power per channel of the TDF8532HH/N3K?
The maximum output power per channel is 80 W at 2 Ω loads.
- What is the operating voltage range of the TDF8532HH/N3K?
The operating voltage range is from 5.5 V to 25 V.
- Does the TDF8532HH/N3K support AEC-Q100 automotive quality standards?
Yes, the TDF8532HH/N3K is compliant with AEC-Q100 standards.
- What diagnostic features are available on the TDF8532HH/N3K?
The device includes startup diagnostic for AC and DC coupled loads, supply voltage feedback with 8-bit resolution, and selectable clip detection.
- What protection features are built into the TDF8532HH/N3K?
The device features independent output current per channel with selectable thresholds, load dump protection (50 V), over- and undervoltage protection, and thermal fold-back and thermal protection.
- Can the TDF8532HH/N3K drive external amplifiers?
Yes, it has a line-driver mode to drive an external amplifier via direct loudspeaker cable.
- What is the package type of the TDF8532HH/N3K?
The package type is 100-HLQFP.
- What is the operating temperature range of the TDF8532HH/N3K?
The operating temperature range is from -40°C to 85°C.
