Overview
The TDF8546J/N2,112 is a high-performance, I2C-bus controlled 4-channel audio amplifier produced by NXP USA Inc. This component is designed to deliver exceptional audio quality and efficiency, making it suitable for various automotive and industrial applications. The amplifier features a Class-AB architecture and is capable of driving loads up to 4 ohms with an output power of 45 watts per channel.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Supply Voltage (VP) | RL = 4 Ω | 6 | 14.4 | 18 | V |
| Operating Supply Voltage (VP) | RL = 2 Ω | 6 | 14.4 | 16 | V |
| Quiescent Current (Iq) | No load; VP = 7 V | - | 190 | - | mA |
| Off-state Current (Ioff) | VSTB = 0.4 V | - | 4 | 10 | μA |
| Output Voltage (VO) | DC amplifier on; high gain/low gain mode | 6.6 | 7.1 | 7.6 | V |
| Amplifier Switch-off Time (toff) | I2C-bus mode; with ILO = 5 μA | 250 | 500 | 750 | ms |
| Start-up Diagnostic Time (tsudiag) | From start-up diagnostic command via I2C-bus | - | - | - | nF |
Key Features
- I2C-bus control for flexible configuration and diagnostics.
- Class-AB amplifier architecture for high efficiency and low distortion.
- 4-channel stereo output with up to 45 watts per channel.
- Operating temperature range from -40°C to +150°C.
- Best efficiency mode control for optimized power consumption.
- Start-up diagnostics and amplifier switch-off time control via I2C-bus.
Applications
The TDF8546J/N2,112 is primarily designed for automotive audio systems but can also be used in various industrial and consumer electronics applications where high-quality audio and efficient power management are required. It is suitable for car infotainment systems, audio amplifiers in vehicles, and other applications needing robust and reliable audio performance.
Q & A
- What is the maximum output power per channel of the TDF8546J/N2,112?
The maximum output power per channel is 45 watts. - What is the operating supply voltage range for the TDF8546J/N2,112?
The operating supply voltage range is from 6 V to 18 V for a 4 Ω load and from 6 V to 16 V for a 2 Ω load. - How is the amplifier controlled?
The amplifier is controlled via the I2C-bus, allowing for flexible configuration and diagnostics. - What is the quiescent current of the TDF8546J/N2,112?
The quiescent current is typically 190 mA at VP = 7 V. - What is the off-state current of the TDF8546J/N2,112?
The off-state current is typically 4 μA when VSTB = 0.4 V. - What is the amplifier switch-off time?
The amplifier switch-off time is between 250 ms to 750 ms via the I2C-bus. - Does the TDF8546J/N2,112 support start-up diagnostics?
Yes, it supports start-up diagnostics via the I2C-bus. - What is the best efficiency mode control?
The best efficiency mode control optimizes power consumption by adjusting the output voltage based on the load selected. - What is the operating temperature range of the TDF8546J/N2,112?
The operating temperature range is from -40°C to +150°C. - What are the typical applications of the TDF8546J/N2,112?
The typical applications include automotive audio systems, car infotainment systems, and other industrial and consumer electronics requiring high-quality audio.
