1 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

2 Applications

? Emergency call (eCall)

? Telematics control unit

? Automotive head units

? Automotive external amplifiers

3 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 highvoltage,

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 leftjustified

(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.