TAA5242中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Stereo high performance audio ADC

– 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

– Sample rate (fS) = 8kHz to 192kHz

? Key Features

– Pin or Hardware Control

– Audio Serial Interface

? Format: TDM, I2S or Left Justified (LJ)

? Bus Controller and Target Modes

? Daisy chain in TDM Mode

? Word Length: Selectable 24 or 32 Bits

– Digital HPF with selectable cut-off frequency:

? 1Hz or 12Hz, at 48kHz sampling rate

– Pin-selectable digital decimation filter options:

? Linear-phase

? Low-latency

– Integrated PLL and Microphone Bias

– Auto clock detection

– Auto 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 microphones & wireless systems

3 Description

The TAA5242 is a high-performance stereo audio

ADC with 2VRMS differential input and 119dB dynamic

range. The TAA5242 supports both differential

and single-ended line/microphone input signals with

options for AC or DC coupling configurations.

The TAA5242 integrates a low-jitter phase-locked

loop (PLL), a digital high-pass filter (HPF) with

pin-selectable cut-offs, and supports sample rates

up to 192kHz. The TAA5242 supports time-division

multiplexing (TDM), I2S, or left-justified (LJ) audio

formats in controller and target modes, and is

pin or hardware controlled. These integrated highperformance

features, pin control along with a single

supply operation, make TAA5242 an excellent choice

for space-constrained audio applications.