Overview
The TDF8546JS/N2,512 from NXP USA Inc. is a highly advanced I2C-bus controlled 4-channel audio amplifier, designed to deliver exceptional performance and efficiency. This amplifier is particularly suited for automotive and other high-demand audio applications, offering features such as programmable gain, soft mute, and thermal pre-warning. With its robust design and comprehensive set of functionalities, it ensures reliable and high-quality audio output in various environments.
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 |
| 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 |
| Output Voltage (VO) | Line driver mode; IB4[D2] = 0 | -45 | 0 | +45 | mV |
| Amp Switch-Off Time (toff) | ILO = 0 μA; via pin STB | 250 | 500 | 750 | ms |
Key Features
- Programmable Gain: The amplifier allows for programmable gain (26 dB and 16 dB) independently for the front and rear channels, ensuring flexible audio configuration.
- Soft Mute and Independent Channel Control: Independent selectable soft mute of front and rear channels, enabling smooth audio transitions without audible disturbance.
- AC Load Detection: Features AC load (tweeter) detection with low and high current modes, enhancing system reliability and performance.
- Line Driver Mode: Supports engine start at a battery voltage as low as 6 V, making it suitable for automotive applications.
- Programmable Clip Detect and Thermal Pre-Warning: Allows for programmable clip detect (2%, 5%, or 10%) and thermal pre-warning, ensuring the amplifier operates within safe limits).
Applications
The TDF8546JS/N2,512 is primarily designed for automotive audio systems but can also be used in other high-demand audio applications. Its robust design and comprehensive feature set make it suitable for use in:
- Automotive infotainment systems
- High-performance audio systems
- Industrial audio applications requiring high reliability and efficiency
Q & A
- What is the operating supply voltage range for the TDF8546JS/N2,512?
The operating supply voltage range is 6 V to 18 V for RL = 4 Ω and 6 V to 16 V for RL = 2 Ω. - What is the quiescent current of the amplifier?
The quiescent current is typically 260 mA at VP = 14.4 V and 190 mA at VP = 7 V. - Does the amplifier support programmable gain?
Yes, the amplifier supports programmable gain (26 dB and 16 dB) independently for the front and rear channels. - What is the purpose of the AC load detection feature?
The AC load detection feature is used to detect tweeter loads with low and high current modes, enhancing system reliability and performance. - Can the amplifier operate at low battery voltages?
Yes, the amplifier supports engine start at a battery voltage as low as 6 V in line driver mode. - What are the programmable clip detect options?
The amplifier allows for programmable clip detect at 2%, 5%, or 10%. - Is thermal pre-warning available on this amplifier?
Yes, the amplifier features programmable thermal pre-warning to ensure safe operation. - How does the soft mute feature work?
The soft mute feature allows for independent selectable soft mute of front and rear channels, enabling smooth audio transitions without audible disturbance. - What is the typical switch-off time for the amplifier?
The typical switch-off time is 500 ms via pin STB. - In which types of applications is the TDF8546JS/N2,512 commonly used?
The TDF8546JS/N2,512 is commonly used in automotive infotainment systems, high-performance audio systems, and industrial audio applications requiring high reliability and efficiency.
