Overview
The TDF8546JV/N2ZU is a high-efficiency, I2C-bus controlled 4 x 45 W audio amplifier produced by NXP USA Inc. This component is designed for automotive and other high-power audio applications, offering advanced features such as programmable gain, independent channel control, and thermal pre-warning. The amplifier is optimized for low power consumption and high reliability, making it suitable for a variety of demanding 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 |
| Amp Switch-Off Time (toff) | ILO = 0 μA; via pin STB | 250 | 500 | 750 | ms |
Key Features
- AC load (tweeter) detection with low and high current mode
- Gain select after start-up without audible disturbance
- Independent selectable soft mute of front and rear channels
- Programmable gain (26 dB and 16 dB), independently programmable for the front and rear channels
- 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
- Pin STB can be programmed/multiplexed with second-clip detect
Applications
The TDF8546JV/N2ZU is primarily used in automotive audio systems, but it is also suitable for other high-power audio applications such as professional audio equipment, home audio systems, and industrial audio solutions. Its robust design and advanced features make it an ideal choice for environments requiring high reliability and efficiency.
Q & A
- What is the maximum output power of the TDF8546JV/N2ZU? The TDF8546JV/N2ZU can deliver up to 45 W per channel.
- What is the operating supply voltage range for this amplifier? 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.
- Does the TDF8546JV/N2ZU support I2C-bus control? Yes, it is controlled via the I2C-bus, allowing for programmable features and diagnostics.
- What are the key features of the gain select in this amplifier? The gain can be selected after start-up without audible disturbance, and it is programmable to 26 dB and 16 dB independently for the front and rear channels.
- How does the line driver mode function in this amplifier? The line driver mode supports engine start at a battery voltage as low as 6 V.
- Can the clip detect be programmed in this amplifier? Yes, the clip detect can be programmed to 2%, 5%, or 10%.
- What is the purpose of the thermal pre-warning feature? The thermal pre-warning feature alerts the system of potential overheating before it becomes critical.
- How is the amplifier switched off? The amplifier can be switched off via the pin STB, and the switch-off time is between 250 ms to 750 ms.
- What are the typical applications of the TDF8546JV/N2ZU? It is primarily used in automotive audio systems but is also suitable for other high-power audio applications.
- What is the quiescent current of the TDF8546JV/N2ZU? The quiescent current is typically 260 mA with no load at VP = 14.4 V.
