1 Features

• AEC-Q100 qualified for automotive applications

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

• ADC performance:

– Line/Microphone differential input dynamic

range: 112dB

– Differential input THD+N: –99dB

– Channel summing mode supports high SNR:

114dB

• ADC input voltage:

– Differential, 10VRMS full-scale inputs

– Single-ended, 5VRMS full-scale inputs

• ADC sample rate (fS) = 4kHz to 768kHz

• Programmable microphone bias (3V to 10V):

– With an integrated efficient boost converter, or

– With external high voltage HVDD supply

• Programmable microphone input fault diagnostics:

– Open inputs or shorted inputs

– Short to ground, MICBIAS, or VBAT

– MICBIAS over current protection

• Up to 4 Record Channels

– 2 Channel Analog + 2 Channel Digital

– 1 Channel Analog + 3 Channel Digital

– 4 Channel Digital

• Low-latency and Ultra low-latency decimation filter

options

• Programmable HPF and biquad digital filters

• Automatic gain controller (AGC)

• Programmable channel settings:

– Digital volume control: –80dB to 47dB

– Gain calibration with 0.1dB resolution

– Phase calibration with 325.5ns resolution

• Gain and phase calibration for ADC channels

• I2C or SPI controls

• Audio serial data interface:

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

– Word length: 16, 20, 24, or 32 Bits

– Bus controller and target modes

• Programmable PLL for flexible clocking

• Low Power Modes

– < 18.5mW for 2-ch recording

• Single-supply operation AVDD: 3.3V

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

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 with 112dB

dynamic range. The TAA5412-Q1 supports line and

microphone inputs, and allows for both single-ended

and differential input configurations with options

for AC and DC coupling. 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. The

device can also directly use an external high-voltage

supply (HVDD), which is any readily available supply

in the system to generate this 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, decimation filters with low and ultra-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 an excellent choice for

scalable, space-constrained automotive systems.