Automotive stereo audio codec with 112dB ADC, 120dB DAC, high-voltage input, mic bias & diagnostics

The TAC5412-Q1

is a high-performance

stereo audio codec

with 10VRMS differential input, 112dB ADC and

2VRMS differential output, 120dB DAC. The TAC5412-Q1 supports both differential and

single-ended inputs and outputs. The device supports both microphone and line inputs

on the ADC channels with options for AC and DC coupling configurations. The DAC

outputs can be configured for either line-out or headphone loads. TAC5412-Q1 can drive up to 62.5mW into a 16Ω

headphone load. The device also offers an integrated high-voltage, programmable

microphone bias and input diagnostic circuitry that allows direct connection to

microphone-based automotive systems with complete fault diagnostic capability for

direct-coupled inputs. The TAC5412-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 TAC5412-Q1

integrates a programmable channel gain, digital volume control, a low-jitter

phase-locked loop (PLL), a programmable high-pass filter (HPF), programmable EQ and

biquad filters, and interpolation and decimation filters with low and ultra-low

latency filter modes. The device allows for sample rates up to 768kHz. The TAC5412-Q1 supports time-division multiplexing

(TDM), I2S, or left-justified (LJ) audio formats and can be controlled

with I2C or SPI. These integrated high-performance features, along with a

single, 3.3V supply operation, make TAC5412-Q1 an

excellent choice for space-constrained automotive systems.