Overview
The TDF8546JS/N2ZS is a high-performance, I2C-bus controlled, 4-channel (quad) Class AB audio power amplifier produced by NXP USA Inc. This amplifier is designed for automotive applications, offering best-in-class efficiency and a range of advanced features. It is part of a new generation of complementary quad Bridge-Tied Load (BTL) audio power amplifiers, making it suitable for demanding audio systems in vehicles.
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) | ILO = 0 μA; via pin STB | 250 | 500 | 750 | ms |
Key Features
- Programmable gain (26 dB and 16 dB) independently programmable for the front and rear channels.
- Independent selectable soft mute of front and rear channels.
- AC load (tweeter) detection with low and high current mode.
- Line driver mode supports engine start at a battery voltage as low as 6 V.
- Programmable clip detect: 2%, 5%, or 10%.
- Programmable thermal pre-warning.
- I2C-bus control for advanced configuration and monitoring.
Applications
The TDF8546JS/N2ZS is primarily designed for automotive audio systems, offering high efficiency and robust performance. It is suitable for a variety of applications including:
- In-vehicle infotainment systems.
- Automotive audio amplifiers.
- Advanced driver-assistance systems (ADAS) requiring high-quality audio.
Q & A
- What is the maximum power output of the TDF8546JS/N2ZS amplifier?
The TDF8546JS/N2ZS can deliver up to 4 x 45 W of power. - What is the operating supply voltage range for this amplifier?
The operating supply voltage range is from 6 V to 18 V for RL = 4 Ω and from 6 V to 16 V for RL = 2 Ω. - Does the TDF8546JS/N2ZS support I2C-bus control?
Yes, it supports I2C-bus control for advanced configuration and monitoring. - What are the programmable gain options for this amplifier?
The gain can be programmed to 26 dB and 16 dB, independently for the front and rear channels. - Can the TDF8546JS/N2ZS operate at low battery voltages?
Yes, it supports line driver mode at battery voltages as low as 6 V. - What are the clip detect options available?
The clip detect can be programmed to 2%, 5%, or 10%. - Does the amplifier have thermal pre-warning capabilities?
Yes, it has programmable thermal pre-warning features. - How does the amplifier handle AC load detection?
The amplifier features AC load (tweeter) detection with low and high current modes. - Can the soft mute function be controlled independently for front and rear channels?
Yes, the soft mute function can be independently selected for the front and rear channels. - What is the typical quiescent current of the amplifier?
The typical quiescent current is 260 mA at no load and VP = 14.4 V.
