PCM1808屬于集成電路（IC）的ADC/DAC-特殊用途。由美國(guó)德州儀器公司制造生產(chǎn)的PCM1808ADC/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(chē)?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。

1FEATURES

23? Qualified for Automotive Applications

? 24-Bit Delta-Sigma Stereo A/D Converter

? Single-Ended Voltage Input: 3 Vp-p

? High Performance:

– THD + N: –93 dB (Typical)

– SNR: 99 dB (Typical)

– Dynamic Range: 99 dB (Typical)

? Oversampling Decimation Filter:

– Oversampling Frequency: ×64

– Pass-Band Ripple: ±0.05 dB

– Stop-Band Attenuation: –65 dB

– On-Chip High-Pass Filter: 0.91 Hz (48 kHz)

? Flexible PCM Audio Interface

– Master/Slave Mode Selectable

– Data Formats: 24-Bit I2S, 24-Bit Left-

Justified

? Power Down and Reset by Halting System

Clock

? Analog Antialias LPF Included

? Sampling Rate: 8 kHz–96 kHz

? System Clock: 256 fS, 384 fS, 512 fS

? Dual Power Supplies:

– 5-V for Analog

– 3.3-V for Digital

? Package: 14-Pin TSSOP

DESCRIPTION

The PCM1808-Q1 is high-performance, low-cost,

single-chip, stereo analog-to-digital converter with

single-ended analog voltage input. The PCM1808-Q1

uses a delta-sigma modulator with 64-times

oversampling and includes a digital decimation filter

and high-pass filter that removes the dc component

of the input signal. For various applications, the

PCM1808-Q1 supports master and slave mode and

two data formats in serial audio interface.

The PCM1808-Q1 supports the power-down and

reset function by means of halting the system clock.

The PCM1808-Q1 is suitable for wide variety of costsensitive

consumer applications where good

performance and operation with a 5-V analog supply

and 3.3-V digital supply is required. The PCM1808-

Q1 is fabricated using a highly advanced CMOS

process and is available in a small, 14-pin TSSOP

package.