Overview
The TLV320AIC25CPFBR, produced by Texas Instruments, is a low-cost, low-power, highly-integrated, high-performance dual-voice codec. It features two 16-bit analog-to-digital (A/D) channels and two 16-bit digital-to-analog (D/A) channels. This codec is designed to provide high-resolution signal conversion using oversampling sigma-delta technology with programmable sampling rates. It is ideal for various voice-band applications, including wireless accessories, hands-free car kits, VOIP, cable modems, and speech processing.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Sampling Rate | Up to 26 Ksps with IIR/FIR filter, up to 104 Ksps with IIR/FIR bypassed | Ksps |
| Resolution | 16-bit | - |
| SNR (ADC/DAC) | 84 dB for ADC, 92 dB for DAC over 13 kHz BW | dB |
| Master Clock | Up to 100 MHz | MHz |
| Digital Core Power | 1.65 V - 1.95 V | V |
| Digital I/O Power | 1.1 V - 3.6 V | V |
| Analog Power | 2.7 V - 3.6 V | V |
| Operating Temperature (Commercial) | 0°C to 70°C | °C |
| Operating Temperature (Industrial) | -40°C to 85°C | °C |
| Power Consumption | 14.9 mW per channel at 3 V | mW |
Key Features
- Stereo 16-bit oversampling sigma-delta A/D and D/A converters
- Selectable FIR/IIR filter with bypassing option
- Smart Time Division Multiplexed (SMARTDM®) serial port for glueless interface to DSPs and microcontrollers
- Programmable input and output gain control (PGA)
- Built-in analog functions: analog and digital sidetone, antialiasing filter (AAF), microphone/handset/headset amplifiers
- Differential and single-ended analog input/output
- Extensive power management with hardware/software power-down modes
- Support for different sampling rates for each device and turbo mode for faster data transfer
- Allows up to eight devices to be connected to a single serial port
- 2-wire interface with selectable I²C or S²C
- Test modes including digital loopback and analog loopback
Applications
- Wireless accessories
- Hands-free car kits
- VOIP
- Cable modems
- Speech processing
Q & A
- What is the maximum sampling rate of the TLV320AIC25?
The TLV320AIC25 has a maximum sampling rate of up to 26 Ksps with the on-chip IIR/FIR filter and up to 104 Ksps with the IIR/FIR filter bypassed.
- What is the resolution of the A/D and D/A converters in the TLV320AIC25?
The TLV320AIC25 features 16-bit A/D and D/A converters.
- What is the SNR of the TLV320AIC25?
The TLV320AIC25 produces an SNR of 84 dB for the ADC and 92 dB for the DAC over a 13 kHz bandwidth.
- What is the maximum master clock frequency supported by the TLV320AIC25?
The TLV320AIC25 supports a maximum master clock frequency of up to 100 MHz.
- What are the power supply voltage ranges for the TLV320AIC25?
The TLV320AIC25 operates with a digital core power supply of 1.65 V - 1.95 V, digital I/O power supply of 1.1 V - 3.6 V, and analog power supply of 2.7 V - 3.6 V.
- What is the operating temperature range for the TLV320AIC25?
The TLV320AIC25 is characterized for commercial operation from 0°C to 70°C and industrial operation from -40°C to 85°C.
- How much power does the TLV320AIC25 consume per channel?
The TLV320AIC25 consumes 14.9 mW per channel at 3 V.
- What types of interfaces does the TLV320AIC25 support?
The TLV320AIC25 supports a SMARTDM serial port, a 2-wire interface with selectable I²C or S²C, and differential and single-ended analog input/output.
- Can the TLV320AIC25 be cascaded with other devices?
Yes, the TLV320AIC25 can be gluelessly cascaded to any SMARTDM-based device, allowing up to eight devices to be connected to a single serial port.
- What are some of the built-in analog functions of the TLV320AIC25?
The TLV320AIC25 includes built-in analog functions such as analog and digital sidetone, antialiasing filter (AAF), microphone/handset/headset amplifiers, and programmable input and output gain control (PGA).
