THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR The TDA7438 is an integrated circuit (IC) manufactured by STMicroelectronics (ST). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** STMicroelectronics (ST)
- **Type:** Digital Controlled Audio Processor
- **Package:** SO28 (28-pin Small Outline package)
- **Operating Voltage:** 8V to 10V (typical)
- **Supply Voltage Range:** 6V to 10.2V
- **Total Harmonic Distortion (THD):** < 0.01% (typical)
- **Signal-to-Noise Ratio (SNR):** > 90dB
- **Control Interface:** I²C (Inter-Integrated Circuit) serial bus
- **Number of Inputs:** 4 stereo inputs
- **Number of Outputs:** 1 stereo output
- **Adjustable Functions:** Volume, Bass, Treble, Balance, Fader, Input Selector
### **Descriptions:**
The TDA7438 is a digitally controlled audio processor designed for high-quality audio applications, such as car radios and home audio systems. It allows for precise adjustment of audio parameters via an I²C interface, making it suitable for microcontroller-based systems. The IC integrates multiple functions, including input selection, volume control, tone adjustment (bass and treble), and balance/fader control.
### **Features:**
- **Digital Control:** Adjustable via I²C bus (easy integration with microcontrollers).
- **Multiple Inputs:** Four stereo inputs (selectable via software).
- **Volume Control:** Wide range with low distortion.
- **Tone Control:** Independent bass and treble adjustment.
- **Balance & Fader:** Adjusts left/right and front/rear speaker balance.
- **Low Noise & Distortion:** High-quality audio processing.
- **Mute Function:** Soft mute capability for smooth transitions.
- **Standby Mode:** Low-power consumption when inactive.
This information is based solely on the manufacturer's datasheet and technical documentation.
