Overview
The TDF8546J/N2ZU is an I2C-bus controlled 4 x 45 W best efficiency amplifier produced by NXP USA Inc. This component is designed for high-efficiency audio amplification and is particularly suited for automotive and other high-power audio applications. However, it is important to note that the TDF8546J/N2ZU is currently obsolete and no longer manufactured, though substitutes may be available.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Supply Voltage (VP(oper)) | RL = 4 Ω | 6 | 14.4 | 18 | V |
| Operating Supply Voltage (VP(oper)) | 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
- 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 TDF8546J/N2ZU is primarily used in automotive audio systems and other high-power audio applications where efficient and reliable amplification is crucial. It is also suitable for use in various industrial and consumer electronics where advanced audio control and monitoring are required.
Q & A
- What is the TDF8546J/N2ZU?
The TDF8546J/N2ZU is an I2C-bus controlled 4 x 45 W best efficiency amplifier produced by NXP USA Inc.
- What are the key features of the TDF8546J/N2ZU?
Key features include AC load detection, gain select after start-up, independent soft mute, programmable gain, line driver mode, programmable clip detect, and thermal pre-warning.
- What is the operating supply voltage range for the TDF8546J/N2ZU?
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 TDF8546J/N2ZU?
The quiescent current is typically 190 mA at VP = 7 V.
- Is the TDF8546J/N2ZU still in production?
No, the TDF8546J/N2ZU is currently obsolete and no longer manufactured.
- What are some potential applications for the TDF8546J/N2ZU?
It is used in automotive audio systems and other high-power audio applications.
- How does the line driver mode function in the TDF8546J/N2ZU?
The line driver mode supports engine start at a battery voltage as low as 6 V.
- Can the gain be programmed independently for front and rear channels?
- What is the purpose of the pin STB in the TDF8546J/N2ZU?
The pin STB can be programmed/multiplexed with second-clip detect.
- How long does the start-up diagnostic time take?
The start-up diagnostic time from the start-up diagnostic command via I2C-bus until completion is not specified in the provided sources, but it involves a series of diagnostic checks.
