TAA5412-Q1中文资料具有 110dB 动态范围、HV 输入集成 HV-MICBIAS 和诊断功能的汽车立体声音频 ADC数据手册TI规格书

描述 Description

The TAA5412-Q1 is a 2-channel high-performance, audio analog-to-digital converter (ADC) that supports analog input signals up to 10VRMS. The TAA5412-Q1 supports line and microphone inputs, and allows for both single-ended and differential input configurations. This device offers an integrated high-voltage, programmable microphone bias, and input diagnostic circuitry that allows direct connection to microphone-based automotive systems with full fault diagnostic capability for direct-coupled inputs. The TAA5412-Q1 integrates an efficient boost converter to generate a high voltage microphone bias using an external, low-voltage, 3.3V supply, which is a readily available supply in the system to generate the high-voltage, programmable microphone bias. The TAA5412-Q1 integrates the programable channel gain, digital volume control, a low-jitter phase-locked loop (PLL), a programmable high-pass filter (HPF), biquad filters, low-latency filter modes, and allows for sample rates up to 768kHz. The TAA5412-Q1 supports time-division multiplexing (TDM), I2S, or left-justified (LJ) audio formats, and can be controlled with either the I2C or SPI interface. These integrated high-performance features, along with a single, 3.3V supply operation, make the TAA5412-Q1 device along with TAC5xxx-Q1 device family an excellent choice for scalable, space-constrained automotive systems. The TAA5412-Q1 is part of a larger TAC5412-Q1 device family, available for download at ti.com.

特性 Features

AEC-Q100 qualified for automotive applications

Temperature grade 1: –40°C ≤ TA ≤ +125°C



ADC performance:

Line differential input dynamic range: 108dB

Microphone differential input dynamic range: 108dB

THD+N: –95dB

Channel summing mode supports high SNR



ADC input voltage:

Differential, 10VRMS full-scale inputs

Single-ended, 5VRMS full-scale inputs



ADC sample rate (fS) = 8kHz to 768kHz

Programmable channel settings:

Digital volume control: –100dB to 27dB

Gain calibration with 0.1dB resolution

Phase calibration with 163ns resolution



Programmable microphone bias (5V to 10V):

With an integrated efficient boost converter



Programmable microphone input fault diagnostics:

Open inputs or shorted inputs

Short to ground, MICBIAS, or VBAT

Microphone bias over current protection



Low-latency signal processing filter selection

Programmable HPF and biquad digital filters

Automatic gain controller (AGC)

I2C or SPI controls

Audio serial data interface:

Format: TDM, I2S, or left-justified (LJ)

Word length: 16 bits, 20 bits, 24 bits, or 32 bits

Master or slave interface



Single-supply, 3.3V operation

I/O supply operation: 3.3V, 1.8V or 1.2V

Power consumption:

< 18.5mW/channel at 48kHz