1 Features

• AEC-Q100 qualified for automotive applications

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

• Mono audio ADC channel

– Performance:

• Line/Microphone differential input dynamic

range: 104dB

• Differential input THD+N: –95dB

• Channel summing mode supports high

SNR: 107dB

– 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

• Mono audio DAC channel

– Performance:

• DAC to differential line-out DR: 114dB

• DAC to single-ended headphone-out DR:

108dB

• THD+N: –96dB

– Headphone/Line-out output voltage:

• Differential, 2VRMS full-scale

• Single-ended, 1VRMS full-scale

– DAC sample rate (fs) = 4kHz to 768kHz

• Common Features

– Low-latency & Ultra low-latency decimation/

interpolation filter options

– Programmable HPF and Biquad filters

– I2C or SPI control interface

– Audio Serial Interface

• Format: TDM, I2S or Left-justified (LJ)

• Word Length: 16, 20, 24 or 32 Bits

– Programmable PLL for flexible clocking

– Low Power Modes

– Single supply operation AVDD: 3.3V

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

2 Applications

• Emergency Call- E-Call

• Telematics Control Unit

• Automotive active noise cancellation

• Automotive head units

3 Description

The TAC5311-Q1 is a low-power mono codec with

10VRMS differential input, 104dB ADC and 2VRMS

differential output, 114dB DAC. The TAC5311-Q1

supports both differential and single-ended inputs

and outputs. The device supports both microphone

and line inputs on ADC channel with options for

AC and DC coupling configurations. The DAC output

can be configured for either line-out or headphone

loads. TAC5311-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 full fault diagnostic capability for direct-coupled

inputs. The TAC5311-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 TAC5311-Q1 integrates a programable channel

gain, digital volume control, a low-jitter phase-locked

loop (PLL), a programmable high-pass filter (HPF),

programmable EQ and biquad filters, interpolation

and decimation filters with low and ultra-low latency

filter modes. It allows for sample rates up to 768kHz.

The TAC5311-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, makes TAC5311-Q1 an excellent

choice for space-constrained automotive systems.