This document describes the features and characteristics of TLV320AIC20, TLV320AIC21, TLV320AIC24, TLV320AIC25, TLV320AIC20K, and TLV320AIC24K products. These products are low-power, highly-integrated, programmable 16-bit, 26KSPS, dual-channel CODECs. They support differential and single-ended analog input/output, stereo 16-bit oversampling sigma-delta A/D converter, and built-in analog functions such as stereo 16-bit oversampling sigma-delta D/A converter, analog and digital sidetone converter, anti-aliasing filter (AAF), programmable input and output gain (PGA), microphone/handset/headset amplifiers, etc. These products also feature selectable FIR/IIR filter, programmable sampling rate, and on-chip FIR, providing 84dB SNR for ADC and 92dB SNR for DAC over 13kHz bandwidth. They are fully compatible with common TMS320® DSP and microcontroller, and support smart time division multiplexed (SMARTDM®) serial port and internally generated master/slave device addresses.
The TLV320AIC2x family provides two 16‑bit A/D and two 16‑bit D/A channels that can be connected to handsets, headsets, speakers, microphones or subscriber lines via a programmable analog crosspoint. The devices support a SMARTDM™ 4‑wire serial port that can be gluelessly cascaded, allowing up to eight codecs on a single serial port.
Key features include selectable FIR/IR filters, programmable sampling rates (up to 26 kS/s with filters, 104 kS/s bypassed), low power consumption (14.9 mW per channel at 3 V), and a wide supply voltage range (2.7‑3.6 V analog, 1.65‑1.95 V digital core). The datasheet also contains electrical characteristics, mechanical dimensions, and ordering information.
| Maximum Sampling Rate (with FIR/IR filter) | 26 kS/s |
|---|---|
| Maximum Sampling Rate (filter bypassed) | 104 kS/s |
| Power Consumption per Channel | 14.9 mW at 3 V |
| Analog Supply Voltage Range | 2.7 V – 3.6 V |
| Digital Core Supply Voltage Range | 1.65 V – 1.95 V |
| Maximum Master Clock | 100 MHz |
| Devices per SMARTDM Serial Port | Up to 8 |
The devices can sample up to 26 kS/s with the on‑chip FIR/IR filter, or up to 104 kS/s when the filter is bypassed.
Up to eight codecs can be cascaded on one SMARTDM serial port.
Each channel consumes about 14.9 mW when powered at 3 V.