1 Features

• Stereo audio ADC Channels

– Performance:

• Line/Microphone differential input dynamic

range: 119dB

• Differential input THD+N: –98dB

– Input voltage:

• Differential, 2VRMS full-scale inputs

• Single-ended, 1VRMS full-scale inputs

– ADC sample rates (fS) = 8kHz to 192kHz

– Digital HPF with configurable cut-off frequency:

• 1Hz or 12Hz, at 48kHz sampling rate

– Low noise microphone bias

• Stereo audio DAC Channels

– Performance:

• DAC to differential line-out dynamic range:

120 dB

• DAC to pseudo-differential headphone-out

dynamic range: 110 dB

• THD+N: –100 dB

– Output voltage:

• Differential line-out/receiver, 2VRMS full-scale

• Pseudo-differential headphone, 1VRMS fullscale

• Single-ended line-out, 1VRMS full-scale

– DAC sample rates (fs) = 8kHz to 192kHz

• Common Features

– Pin or Hardware Control

– Audio Serial Interface

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

• Bus Controller and Target Modes

• Configurable TDM Slots

• Word Length: Selectable 24 or 32 Bits

– Pin-selectable digital decimation/interpolation

filter options:

• Linear-phase or Low-latency

– Integrated PLL

– Auto clock & sample rate detection

– Interrupt output on clock error

– Single Supply Operation AVDD: 1.8V or 3.3V

– I/O Supply Operation: 1.8V or 3.3V

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

2 Applications

• Video Conference System

• IP Network Camera

• IP Telephone

• Smart Speakers

• Professional audio mixer/control surface

3 Description

The TAC5242 is a high-performance low-power stereo

audio codec with 2VRMS differential input, 119dB

dynamic range ADC and 2VRMS differential output,

120dB dynamic range DAC. The TAC5242 supports

both differential and single-ended inputs and outputs.

The ADC supports both line/microphone input signals

with options for AC or DC coupling configurations

and the DAC output can be configured for either

line-output or headphone loads. The DAC can drive

upto 62.5mW into a 16Ω headphone load. The device

integrates a phase-locked loop (PLL) and supports

sample rates up to 192kHz for both the ADC and

DAC signal chains. The device also integrates a DCremoval

digital high-pass filter (HPF) with configurable

cut-off for the ADC signal chain. The TAC5242

supports time-division multiplexing (TDM), left-justified

(LJ), or I2S audio formats in controller and target

modes, and is pin or hardware controlled. These

integrated high-performance features, pin control

along with a single supply operation, make TAC5242

an excellent choice for space-constrained audio

applications.