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| 型号： | TDA7521 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP44 |
| 封装： | 10 X 10 MM, 1.40 MM HEIGHT, TQFP-44 |
| 文件页数： | 1/11页 |
| 文件大小： | 97K |
| 代理商： | TDA7521 |
1/11
PRODUCT PREVIEW
This is preliminary information on a new product now in development. Details are subject to change without notice.
TDA7521
Analog Front End
TDA7521 is a BiCMOS analog front end for CD appli-
cations. Four input signals (AC*, BD*, E* and F*),
coming from the pick-up (whose laser diode is driven
and controlled by the device itself), are preamplified
by a programmable voltage-to-voltage or current-to-
voltage stage, depending on the used pick-up. The
output signals from the preamplifier stage (AC, BD, E,
F and HF, a radio frequency signal obtained by com-
bining the photo-detector outputs as A+B+C+D) are
fed to an 8-bit HF ADC (for HF, which carries encoded
audio data) and a 6-bit Servo ADC (for AC, BD, E and
F, used for focusing, tracking the laser beam and con-
trolling revolution speed). All these signals are digi-
tized, multiplexed, synchronized with the external
clock (768
×Fs or 394×Fs, Fs=44.1KHz) and fed to the
digital counterpart in one only digital stream (AC/HF/
BD/HF/E/HF/F/HF). Two stereo DACs convert the in-
put bitstreams from TDA7522.
All the clock signals (for ADCs and DACs) are generated by a low-jitter PLL-based clock manager. All
TDA7521’s analog preprocessing is controlled by TDA7522 by means of an UART interface (which imple-
ments an I2C-like protocol). Housed in a TQFP 44, 10
×10mm package, TDA7521 features the functions
shown in figure below.
TDA7521 uses the HF4CMOS technology and is supplied @5Vdc.
May 1998
TQFP44
(10 x 10 x 1.40 mm body)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7522 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Digital Servo & Decoder |
| TDA7528 | 功能描述:射频接收器 AM/FM car radio Front-End IF Signal RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| TDA7528TR | 功能描述:音频放大器 AM/FM car radio Front-End IF Signal RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TDA7529 | 功能描述:调谐器 RF front-end AM/FM DSP car-radio IF Sig RoHS:否 制造商:NXP Semiconductors 功能: 噪声系数: 工作电源电压: 最小工作温度: 最大工作温度: |
| TDA7529_11 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:RF front-end for AM/FM DSP car-radio with IF sampling |
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