Hx8872c Datasheet [better] (PREMIUM)

HX8872C Datasheet: A Complete Technical Deep Dive for Engineers and Hobbyists

4.1 RGB Interface Timing:

• DOTCLK frequency: Up to 30 MHz (supports 60 fps on 864 resolution).
• HSYNC period: 400 to 1200 DOTCLK cycles.
• VSYNC period: Minimum 1 HSYNC line.
• Data setup/hold time: 10 ns typical.

HX8872C — Overview and Key Specifications

Type: Single-chip audio power amplifier (class AB, low-voltage)
Typical use: Portable audio devices, battery-powered speakers, phones, multimedia devices.
Package: Commonly available in SOP-8 or MSOP-8 (check supplier).
Supply voltage (Vcc): Typical range 2.5 V to 5.5 V (verify with specific vendor datasheet)
Output power: Up to ~3 W per channel into 4 Ω at 5 V (single-ended) — actual power depends on supply voltage, load impedance, and THD+N.
Quiescent current: Typically low (tens to hundreds of μA in standby; a few mA in active mode) — refer to datasheet section for exact figures.
Shutdown/Standby pin: Usually provided to reduce power consumption.
Gain: Fixed internally (commonly around 20–30 dB) or set by external resistors depending on variant.
Thermal protection: Integrated thermal shutdown and short-circuit protection.
Pop-and-click suppression: Soft-start and mute functions included on many revisions.
Inputs: Differential or single-ended input pins; input coupling capacitors recommended.
Outputs: BTL (bridge-tied load) outputs for speaker driving, may also support single-ended configurations with external components.
ESD protection: I/O protection on most commercial samples.

(Note: HX8872C naming is used by multiple small IC manufacturers; exact parameters can vary. Use the manufacturer's datasheet for pinout, absolute maximum ratings, and typical performance curves.) hx8872c datasheet

Chapter 5: Command Set – Configuring the Driver IC

The HX8872C is register-programmable. The datasheet dedicates 10+ pages to command definitions. Here are the most commonly used commands: HX8872C Datasheet: A Complete Technical Deep Dive for

| Command (Hex) | Function | Description | |---------------|----------|-------------| | 0x11 | Sleep Out | Exits sleep mode, enables oscillator | | 0x29 | Display ON | Turns on the display panel | | 0x28 | Display OFF | Turns off without losing register settings | | 0x36 | MADCTL | Memory access control (scan direction, RGB/BGR swap) | | 0x3A | COLMOD | Interface pixel format (e.g., 0x66 = 18-bit, 0x77 = 24-bit) | | 0x2A | Column Address Set | Defines horizontal display range | | 0x2B | Page Address Set | Defines vertical display range | | 0x2C | Write Memory | Starts writing pixel data to GRAM | DOTCLK frequency : Up to 30 MHz (supports

Package Information

• Package Type: [Insert, e.g., QFN, WLCSP]
• Package Size: [Insert dimensions, e.g., 3.9mm x 3.9mm]
• Pin Configuration: [Provide a detailed pinout]

Typical Application Circuit and Design Notes

• Use short traces and place decoupling capacitors (0.1 μF ceramic + 10 μF electrolytic) close to VCC and GND pins to maintain stability and handle transient currents when driving speakers.
• For BTL output, no output capacitors are required between amplifier outputs and speaker; connect speaker directly between OUT+ and OUT−. For single-ended outputs, use coupling capacitors per datasheet.
• Add a small resistor (0.1–1 Ω) and/or ferrite bead in series with each output if oscillation or EMI issues occur.
• Use the BYPASS/MUTE capacitor recommended to minimize pop-on/pop-off; typical values 0.01–0.1 μF.
• If using shutdown, ensure SHDN pin is driven cleanly to avoid unintended audible transients.
• Thermal considerations: ensure PCB copper area under the IC provides heat dissipation; consider airflow or heatsinking for continuous high-power use.
• Avoid driving into loads below the recommended minimum impedance; lower impedances raise dissipation and may trigger thermal or current limiting.

2.2 Display Interface Pins

• R[0:7], G[0:7], B[0:7]: 24-bit RGB data lines.
• HSYNC, VSYNC, DOTCLK, DEN: Synchronization and data enable signals.
• IM0, IM1, IM2: Interface mode select pins (choose RGB, MCU, or SPI).