1 Features

? Stereo high-performance ADC:

– 2-channel analog microphones or line-in

? ADC line and microphone differential and singleended

input performance:

– PCM1822 dynamic range:

? 117-dB, dynamic range enhancer enabled

? 111-dB, dynamic range enhancer disabled

– THD+N: –95 dB

? 1-VRMS full-scale input

? ADC sample rate (fS) = 8 kHz to 192 kHz

? Hardware pin control configurations

? Linear-phase or low-latency filter selection

? Flexible audio serial data interface:

– Master or slave interface selection

– 32-bits, 2-channel TDM

– 32-bits, 2-channel I2S

? Automatic power-down upon loss of audio clocks

? Integrated high-performance audio PLL

? Single-supply operation: 3.3 V

? I/O-supply operation: 3.3 V or 1.8 V

? Power consumption for 3.3-V AVDD supply:

– 19.6 mW/channel at 16-kHz sample rate

– 21.3 mW/channel at 48-kHz sample rate

2 Applications

? Smart Speakers

? DVD recorders and players

? AV receivers

? Video conference systems

? IP network cameras

3 Description

The PCM1822 is a high-performance, Burr-Brown?

audio analog-to-digital converter (ADC) that supports

simultaneous sampling of up to two analog channels.

The device supports single-ended and differential line

and microphone inputs with a 1-VRMS full-scale signal.

The device integrates a phase-locked loop (PLL),

a DC removal high-pass filter (HPF), and supports

sample rates up to 192 kHz. The device supports

time-division multiplexing (TDM) or I2S audio formats,

selectable with the hardware pin level. Additionally,

the PCM1822 supports master and slave mode

selection for the audio bus interface operation. These

integrated high-performance features, along with the

ability to be powered from a single supply of 3.3

V, make the device an excellent choice for costsensitive,

space-constrained audio systems in far-field

microphone recording applications.

The PCM1822 is specified from –40°C to +125°C, and

is offered in a 20-pin WQFN package.

TLV320ADC5120屬于集成電路（IC） > ADC/DAC - 特殊用途。美國(guó)德州儀器公司制造生產(chǎn)的TLV320ADC5120ADC/DAC - 特殊用途該產(chǎn)品族中的產(chǎn)品可用于模擬和數(shù)字表示的信息轉(zhuǎn)換，適用于特定用例，或集成了通用數(shù)據(jù)轉(zhuǎn)換器中不常見(jiàn)的其他功能。例如針對(duì)超聲或汽車?yán)走_(dá)應(yīng)用集成了低噪聲放大器和可變?cè)鲆婕?jí)的器件、注重音頻和視頻的產(chǎn)品、在段碼式顯示器上集成顯示測(cè)量值功能的器件、集成輸入輸出電氣隔離的器件等。