AD1970集成電路（IC）的編碼器解碼器轉(zhuǎn)換器規(guī)格書PDF中文資料

AD1970屬于集成電路（IC）的編碼器解碼器轉(zhuǎn)換器。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD1970編碼器，解碼器，轉(zhuǎn)換器該系列產(chǎn)品可用于將信息封裝或編碼為適合于傳輸或存儲的格式，和/或在通信路徑的另一端執(zhí)行逆運算，通常是通過使用某些形式的調(diào)制過程。示例包括從數(shù)字數(shù)據(jù)生成模擬視頻信號的器件（反之亦然）；基于傳輸目的對按鈕的狀態(tài)進行編碼的器件（實現(xiàn)遠程控制功能）；以及便于將標準 UART 連接到標準紅外收發(fā)器的器件。

GENERAL DESCRIPTION

The AD1970 is a complete analog or digital-in, analog-out BTSC encoder which includes pilot-tone generation and subcarrier mixing functions. The stereo ADC provides the means for digitization of the analog baseband audio signal. A built-in high performance DAC is provided to output the BTSC baseband composite signal. The output of the AD1970 can be connected with minimal external circuitry to the input of a 4.5 MHz aural FM modulator.

FEATURES

Complete BTSC encoder

Pilot tone generator

Includes subcarrier modulation

Channel separation: 30 dB

Bandwidth up to 14 kHz

Stereo analog or digital input

Phat-Stereo? algorithm for stereo image enhancement

Dialog enhancement function for playing wide dynamic

range video sources over built-in TV speakers

Includes L ? R dual-band compressor

I2C port for control of modes, effects, and parameters

Analog input performance

74 dB dynamic range

?72 dB THD + N

Digital input performance

87 dB dynamic range

?83 dB THD + N

Integrated op amps for analog inputs and outputs

Single-ended output reduces external part count

Integrated PLL generates all clocks from composite video,

48 kHz sample clock, or high speed master clock

Sync stripper to recover video clock from composite

video signal

Output level control for setting aural carrier deviation

Macrovision?-compliant

Dolby? RF mode-compatible

48-pin LQFP plastic package

APPLICATIONS

Digital set top box

DVD player

DVD recorder