Overview
The TLV320AIC31IRHBR is a low-power stereo audio codec produced by Texas Instruments. This device is designed with multiple inputs and outputs, and it is programmable in single-ended or fully-differential configurations. It features a stereo headphone amplifier and extensive register-based power control, making it ideal for portable, battery-powered audio and telephony applications. The codec supports a wide range of sampling rates and includes integrated microphone bias, a digitally-controlled stereo microphone pre-amp, and automatic gain control (AGC) for the record path. The playback path includes mix/mux capability from the stereo DAC and selected inputs, through programmable volume controls to various outputs.
Key Specifications
| Parameter | Value |
|---|---|
| Package | VQFN (RHB), 32 pins |
| Operating Temperature Range | -40°C to 85°C |
| Audio DAC SNR | 100 dB (A-Weighted) |
| Audio ADC SNR | 92 dB (A-Weighted) |
| Sampling Rates | 8 kHz to 96 kHz |
| Audio Input Pins | Six, including two stereo differential/single-ended inputs |
| Audio Output Drivers | Six, including four high-power and two fully differential outputs |
| Speaker Drive Capability | Up to 500 mW per channel |
| Power Consumption | 14 mW for stereo 48 kHz playback with 3.3 V analog supply |
| Power Supplies | Analog: 2.7 V to 3.6 V, Digital Core: 1.65 V to 1.95 V, Digital I/O: 1.1 V to 3.6 V |
Key Features
- Stereo Audio DAC with 100 dB (A-Weighted) SNR, supporting 16-/20-/24-/32-bit data and sampling rates from 8 kHz to 96 kHz.
- Stereo Audio ADC with 92 dB (A-Weighted) SNR, supporting sampling rates from 8 kHz to 96 kHz.
- Six audio input pins, including two stereo differential/single-ended inputs.
- Six audio output drivers, including four high-power and two fully differential outputs.
- Integrated headphone and speaker amplifiers with up to 500 mW per channel speaker drive capability.
- Programmable input/output analog gains and automatic gain control (AGC) for recording.
- Programmable microphone bias level and PLL for flexible clock generation.
- I2C control bus and audio serial data bus supporting I2S, left-/right-justified, DSP, and TDM modes.
- Extensive modular power control for low power consumption.
Applications
The TLV320AIC31IRHBR is suitable for a variety of applications, including:
- Portable audio devices such as MP3 players and handheld game consoles.
- Battery-powered telephony devices, including smartphones and VoIP handsets.
- Consumer electronics requiring high-quality audio playback and recording, such as tablets and laptops.
- Automotive infotainment systems needing low-power, high-performance audio codecs.
Q & A
- What is the package type and pin count of the TLV320AIC31IRHBR?
The TLV320AIC31IRHBR comes in a VQFN (RHB) package with 32 pins.
- What are the operating temperature ranges for the TLV320AIC31IRHBR?
The operating temperature range is from -40°C to 85°C.
- What are the signal-to-noise ratios (SNR) for the DAC and ADC?
The DAC has a 100 dB (A-Weighted) SNR, and the ADC has a 92 dB (A-Weighted) SNR.
- What sampling rates are supported by the TLV320AIC31IRHBR?
The device supports sampling rates from 8 kHz to 96 kHz.
- How many audio input and output pins does the TLV320AIC31IRHBR have?
It has six audio input pins and six audio output drivers.
- What is the power consumption for stereo 48 kHz playback?
The power consumption is as low as 14 mW with a 3.3 V analog supply.
- What power supplies are required for the TLV320AIC31IRHBR?
The device requires an analog supply of 2.7 V to 3.6 V, a digital core supply of 1.65 V to 1.95 V, and a digital I/O supply of 1.1 V to 3.6 V.
- Does the TLV320AIC31IRHBR support programmable gain and automatic gain control?
Yes, it supports programmable input/output analog gains and automatic gain control (AGC) for recording.
- What serial interfaces are supported by the TLV320AIC31IRHBR?
The device supports I2C control bus and audio serial data bus with I2S, left-/right-justified, DSP, and TDM modes.
- What are some typical applications for the TLV320AIC31IRHBR?
Typical applications include portable audio devices, battery-powered telephony devices, consumer electronics, and automotive infotainment systems.
