Overview
The TLV320AIC22C, produced by Texas Instruments, is a dual voice over internet protocol (VoIP) codec designed for voice applications. This integrated circuit contains two coders/decoders (codecs) that support various audio interfaces, including handsets, headsets, speakers, and microphones. It features a flexible serial interface and can be controlled via either the serial port or the I2C bus. The device is optimized for low power consumption and high audio quality, making it suitable for a range of voice communication systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (AVDD1, AVDD2, AVDD3, DVDD) | 3.0 - 3.6 | V |
| Analog Signal Peak-to-Peak Input Voltage | 4 | V |
| Master Clock Input Frequency | 32.768 MHz or 24.576 MHz | Hz |
| Operating Temperature Range | -40 to 85 | °C |
| Power Consumption (Typical) | 120 mW | mW |
| Package Type | 48-Terminal Low-Profile Plastic Quad Flatpack (LQFP) | |
| ADC/DAC Conversion Rate | 7.2 kHz to 16 kHz | Hz |
| Signal-to-Noise Ratio (SNR) | Up to 70 dB | dB |
| Total Harmonic Distortion + Noise (THD + N) | Up to 26 dB | dB |
Key Features
- Two analog-to-digital converter (ADC) channels and two digital-to-analog converter (DAC) channels.
- Flexible serial interface compatible with a single multichannel buffered serial port (McBSP) of a C54x or C6x digital signal processor (DSP).
- Programmable-gain amplifiers (PGAs), preamp gain, microphone bias voltages, and analog crosspoint configurable via serial or I2C interface.
- Hardware and software power-down capabilities for reduced power dissipation.
- Differential outputs with low crosstalk (< -85 dB).
- Support for cascading up to four units to achieve eight channels.
Applications
The TLV320AIC22C is designed for various voice communication applications, including:
- Voice over Internet Protocol (VoIP) systems.
- Telephony systems.
- Conference phones and speakerphones.
- Headset and handset interfaces.
- Subscriber line interfaces.
Q & A
- What is the primary function of the TLV320AIC22C?
The TLV320AIC22C is a dual VoIP codec designed for voice applications, including VoIP, telephony, and other voice communication systems. - How many ADC and DAC channels does the TLV320AIC22C have?
The TLV320AIC22C has two ADC channels and two DAC channels. - What is the typical power consumption of the TLV320AIC22C?
The typical power consumption is 120 mW. - What is the operating temperature range of the TLV320AIC22C?
The operating temperature range is -40°C to 85°C. - How can the TLV320AIC22C be controlled?
The TLV320AIC22C can be controlled via either the serial interface or the I2C bus. - Can multiple TLV320AIC22C units be cascaded?
Yes, up to four units can be cascaded to achieve up to eight channels. - What is the package type of the TLV320AIC22C?
The TLV320AIC22C is available in a 48-terminal Low-Profile Plastic Quad Flatpack (LQFP) package. - What are the key features of the TLV320AIC22C's audio interface?
The device features programmable-gain amplifiers, preamp gain, microphone bias voltages, and an analog crosspoint, all configurable via the serial or I2C interface. - How does the TLV320AIC22C manage power consumption?
The TLV320AIC22C has hardware and software power-down capabilities to reduce power dissipation. - What is the signal-to-noise ratio (SNR) of the TLV320AIC22C?
The SNR can be up to 70 dB.
