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.