Overview
. It is specifically designed for high-efficiency stereo applications, such as home theater receivers and professional audio systems, by using a built-in shift power supply circuit to switch supply voltages based on input signal levels. Key Technical Specifications
| Pin | Function | |-----|----------| | 1 | Non-inverting input (Ch1) | | 2 | Inverting input (Ch1) | | 3 | Ground | | 4 | Bootstrap (Ch1) | | 5 | Output (Ch1) | | 6 | +VCC | | 7 | -VCC | | 8 | Standby control | | 9 | -VCC (power ground) | | 10 | Output (Ch2) | | 11 | Bootstrap (Ch2) | | 12 | Ground | | 13 | Inverting input (Ch2) | | 14 | Non-inverting input (Ch2) | | 15 | Signal ground |
- High Output Power: 150W + 150W (Typical) at THD = 0.4%, Vcc = ±48V, RL = 6Ω.
- Wide Operating Voltage Range: ±25V to ±55V (Recommended: ±48V).
- Low Distortion: THD (Total Harmonic Distortion) as low as 0.08% at 1kHz, 50W output.
- Built-in Protection: Internal thermal shutdown and overcurrent protection (though external protection is recommended).
- Compact Form Factor: SIP (Single Inline Package) with 18 pins (often 16 active pins).
- Good Ripple Rejection: 60dB typical, reducing need for ultra-regulated power supplies.
Pin Configuration & Internal Block Diagram
STK412-230 , thick-film hybrid audio power amplifier IC manufactured by
Class H
STK412-230 is a high-performance audio power amplifier hybrid IC , originally designed by Sanyo (now part of Panasonic ). It is primarily used in hi-fi audio systems and home theater receivers due to its high efficiency and powerful output. Core Specifications Output Power: 150W + 150W (2 channels) into an 8-ohm load.
- Pin configuration diagram
- Thermal resistance curves (Tc vs. Po)
- Distortion vs. frequency graphs
- Recommended PCB copper pattern
- Safe operating area (SOA) curve
The STK412-230 datasheet highlights several key features that make this IC an attractive choice for audio amplifier designs: