TAC5142_V02中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Stereo audio ADC Channels

– Performance:

? Line/Microphone differential input dynamic

range: 103dB

? Differential input THD+N: –91dB

– 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:

110 dB

? DAC to pseudo-differential headphone-out

dynamic range: 107 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 TAC5142 is a stereo audio codec with 2VRMS

differential input, 103dB dynamic range ADC and

2VRMS differential output, 110dB dynamic range DAC.

The TAC5142 supports both differential and singleended

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 phaselocked

loop (PLL) and supports sample rates up to

192kHz for both the ADC and DAC signal chains.

The device also integrates a DC-removal digital

high-pass filter (HPF) with configurable cut-off for

the ADC signal chain. The TAC5142 supports timedivision

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

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 TAC5142 an excellent choice

for space-constrained audio applications.