Overview
The TDA8947J/N3,112 is a 4-channel audio amplifier IC produced by NXP USA Inc. This device is designed to provide high-quality audio amplification with various configuration options. It can be used as four Single-Ended (SE) channels with a fixed gain of 26 dB, two Bridge-Tied Load (BTL) channels with a fixed gain of 32 dB, or a combination of SE and BTL channels for a 2.1 system setup. The amplifier features an all-NPN output stage and is housed in a 17-pin Dil-Bent-Sil (DBS) power package, ensuring efficient heat dissipation and reliability.
Key Specifications
| Parameter | Conditions | Min | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage) | Operating | -0.3 | +26 | V |
| VCC (Supply Voltage) | No signal (clipping) | -0.3 | +28 | V |
| VI (Input Voltage) | -0.3 | VCC + 0.3 | V | |
| IORM (Repetitive Peak Output Current) | 4 | A | ||
| Tstg (Storage Temperature) | Non-operating | -55 | +150 | °C |
| Output Power (SE) | 1 | 25 | W | |
| Output Power (BTL) | W |
Key Features
- Multiple Configuration Options: Can be used as four Single-Ended (SE) channels, two Bridge-Tied Load (BTL) channels, or a combination of SE and BTL channels for a 2.1 system setup.
- High Output Power: Capable of delivering output power ranging from 1 W to 25 W in SE mode and higher in BTL mode.
- Advanced Protection Circuitry: Features a unique protection circuit based on multiple temperature measurements inside the chip, ensuring maximum output power without unnecessary audio holes and protecting against shorts and high chip temperatures.
- Good Low Frequency Response: Minimized switch-on delay due to the use of small input capacitor values, resulting in good low frequency response and switch-on behavior.
- All-NPN Output Stage: The power amplifier has an all-NPN output stage capable of delivering a peak output current of 4 A.
Applications
- Home Audio Systems: Suitable for use in home audio systems, including stereo and 2.1 channel setups.
- Automotive Audio Systems: Can be used in automotive audio systems due to its robust design and protection features.
- Professional Audio Equipment: Applicable in professional audio equipment where high-quality audio amplification is required.
- Consumer Electronics: Used in various consumer electronics such as soundbars, speakers, and other audio devices.
Q & A
- What is the TDA8947J/N3,112 used for?
The TDA8947J/N3,112 is a 4-channel audio amplifier IC used for high-quality audio amplification in various configurations such as SE, BTL, and 2.1 systems.
- What are the different configuration options for the TDA8947J/N3,112?
The device can be configured as four Single-Ended (SE) channels, two Bridge-Tied Load (BTL) channels, or a combination of SE and BTL channels for a 2.1 system setup).
- What is the maximum output power of the TDA8947J/N3,112 in SE mode?
The maximum output power in SE mode is up to 25 W).
- What type of protection circuitry does the TDA8947J/N3,112 feature?
The device features a unique protection circuit based on multiple temperature measurements inside the chip, protecting against shorts and high chip temperatures).
- What is the package type of the TDA8947J/N3,112?
The TDA8947J/N3,112 is housed in a 17-pin Dil-Bent-Sil (DBS) power package).
- What is the peak output current capability of the TDA8947J/N3,112?
The device can deliver a peak output current of 4 A).
- What are the advantages of using the TDA8947J/N3,112 in BTL mode?
Using the TDA8947J/N3,112 in BTL mode offers advantages such as low peak supply current, ripple frequency on the supply voltage twice the signal frequency, no need for expensive DC-blocking capacitors, and good low frequency performance).
- What is the storage temperature range for the TDA8947J/N3,112?
The storage temperature range is from -55°C to +150°C).
- Is the TDA8947J/N3,112 pin compatible with other models?
Yes, the TDA8947J/N3,112 is pin compatible with the TDA8944AJ and TDA8946AJ).
- What are some common applications of the TDA8947J/N3,112?
The device is commonly used in home audio systems, automotive audio systems, professional audio equipment, and various consumer electronics).
