Overview
The TDF8546J/N1,112 is a cutting-edge audio power amplifier produced by NXP USA Inc. It is part of a new generation of complementary quad Bridge-Tied Load (BTL) audio power amplifiers, specifically designed for automotive applications. This amplifier is notable for its best efficiency mode and full I²C-bus controlled diagnostics, including start-up diagnostics. It can operate at a battery voltage as low as 6 V, making it suitable for stop/start-car operations.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply voltage (VP) | RL = 4 Ω | 6 | 14.4 | 18 | V |
| Supply voltage (VP) | RL = 2 Ω | 6 | 14.4 | 16 | V |
| Quiescent current (Iq) | No load; VP = 14.4 V | - | 260 | 350 | mA |
| 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 | 250 | 500 | 750 | ms |
Key Features
- Full I²C-bus controlled diagnostics, including start-up diagnostics.
- Operates at a battery voltage as low as 6 V, suitable for stop/start-car operations.
- Complementary DMOS output stage in a Silicon-On-Insulator (SOI)-based BCD process for high power output and perfect sound quality.
- Programmable gain (26 dB and 16 dB), independently programmable for the front and rear channels.
- Independent selectable soft mute of front and rear channels.
- Programmable clip detect: 2%, 5%, or 10%.
- Programmable thermal pre-warning.
- 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.
Applications
The TDF8546J/N1,112 is primarily designed for automotive audio systems, particularly in vehicles with advanced audio requirements and stop/start technology. It is suitable for various automotive audio applications where high efficiency, low power dissipation, and robust performance are essential.
Q & A
- What is the TDF8546J/N1,112 used for?
The TDF8546J/N1,112 is used in automotive audio systems, providing high-efficiency audio amplification.
- What is the minimum operating supply voltage for the TDF8546J/N1,112?
The minimum operating supply voltage is 6 V.
- What is the maximum power output per channel of the TDF8546J/N1,112?
The TDF8546J/N1,112 can deliver up to 45 W per channel.
- Does the TDF8546J/N1,112 support I²C-bus control?
- What type of output stage does the TDF8546J/N1,112 use?
- Can the gain of the TDF8546J/N1,112 be programmed?
- Does the TDF8546J/N1,112 have thermal protection features?
- What is the package type of the TDF8546J/N1,112?
- Is the TDF8546J/N1,112 still in production?
- What are the key benefits of the TDF8546J/N1,112 in terms of power dissipation?
