Overview
The TDF8546TH/N2ZJ is a high-performance, I²C-bus controlled, 4-channel audio power amplifier designed by NXP USA Inc. This component is part of a new generation of complementary quad Bridge-Tied Load (BTL) audio power amplifiers, specifically intended for automotive applications. It offers advanced features such as programmable gain, independent channel control, and robust protection mechanisms, making it an ideal choice for modern automotive audio systems.
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 = 14.4 V | - | 260 | 350 | 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) | Time to DC output voltage < 0.1 V; ILO = 0 μA | 250 | 500 | 750 | ms |
Key Features
- I²C-Bus Control: The amplifier is controlled via an I²C-bus interface, allowing for programmable gain, clip detection, and thermal pre-warning.
- Programmable Gain: Independent programmable gain for front and rear channels (26 dB and 16 dB).
- Independent Channel Control: Selectable soft mute of front and rear channels.
- AC Load Detection: Detection with low and high current modes.
- Line Driver Mode: Supports engine start at a battery voltage as low as 6 V.
- Thermal Protection: Programmable thermal pre-warning and protection mechanisms).
- Start-Up Diagnostics: Comprehensive start-up diagnostics to ensure proper functioning).
Applications
- Automotive Audio Systems: Designed specifically for automotive applications, providing high-quality audio performance.
- Industrial Control: Can be used in industrial control systems due to its robust and reliable design).
- Other Audio Systems: Suitable for various audio applications requiring multiple channels and advanced control features).
Q & A
- What is the TDF8546TH/N2ZJ used for?
The TDF8546TH/N2ZJ is used primarily in automotive audio systems and other applications requiring high-performance, multi-channel audio amplification.
- What is the operating supply voltage range of the TDF8546TH/N2ZJ?
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 gain of the TDF8546TH/N2ZJ controlled?
The gain is controlled via the I²C-bus interface, allowing for programmable gain settings of 26 dB and 16 dB independently for front and rear channels.
- What protection mechanisms does the TDF8546TH/N2ZJ have?
The amplifier includes thermal pre-warning and protection, clip detection, and soft mute functions for front and rear channels.
- Can the TDF8546TH/N2ZJ operate at low battery voltages?
Yes, it supports engine start at a battery voltage as low as 6 V in line driver mode.
- How many channels does the TDF8546TH/N2ZJ have?
The TDF8546TH/N2ZJ is a 4-channel audio power amplifier.
- What is the typical quiescent current of the TDF8546TH/N2ZJ?
The typical quiescent current is 260 mA at no load and VP = 14.4 V.
- Does the TDF8546TH/N2ZJ have start-up diagnostics?
Yes, it includes comprehensive start-up diagnostics to ensure proper functioning.
- What is the package type of the TDF8546TH/N2ZJ?
The package type is 36-pin HSOP (Heat Sink Small Outline Package).
- Can the TDF8546TH/N2ZJ be used in industrial applications?
Yes, it can be used in industrial control systems due to its robust and reliable design.
