AD7915/AD7916中文数据手册
AD7915/AD7916是16位、逐次逼近型模数转换器(ADC)，采用单电源VDD供电。 器件内置一个低功耗、高速、16位采样ADC和一个多功能串行接口端口。 在CNV上升沿，AD7915/AD7916对IN+与IN-引脚之间的电压差进行采样， 这两个引脚上的电压摆幅通常在0 V至VREF之间、相位相反。 基准电压(REF)由外部提供，并且可以独立于电源电压(VDD)进行设置。 功耗和吞吐速率呈线性变化关系。
AD7915/AD7916 Chinese Datasheet AD7915/AD7916 is a 16-bit successive approximation analog to digital converter (ADC), a single power supply VDD. It contains a low power, high speed, 16-bit sampling ADC and a versatile serial interface port. On the CNV rising edge, AD7915/AD7916 voltage difference between IN+ and IN- pin is sampled voltage swing these pins usually between 0 V to VREF, the opposite phase. A reference voltage (REF) is applied externally and can be independent of the supply voltage (VDD) settings. Power and throughput rate scales linearly. (2015-06-21, PDF, 916KB, 下载2次)
TDC-GP22 为TDC-GP21的下一代升级产品.这颗芯片是与TDC-GP21芯片100 管脚和功能兼容的芯片,而且带有更
强大的功能. 尤其这颗芯片的最新第一波检测功能,将使TDC-GP22非常适合于高动态范围的超声波水表的应
用.可编程的比较器offset调整范围增加到了 ± 35 mV ,而且这个比较器offset将会在第一波检测后自动回
到0点比较.测量第一个回波脉冲的相对宽度将会给用户一个对于接收信号强度的提示.通过这个提示信息可以
用于系统的长期覆盖物的信号减弱判断,以及用于气泡检测.多个测量脉冲的数据处理和数据读出功能将会比
TDC-GP21更加简单方便.
The next generation TDC-GP22 TDC-GP21 upgrade products. This chip is pin and function compatible chip and the TDC-GP21 chip 100 tube, and with more
Powerful functions. This chip detection function especially the latest first, will make the TDC-GP22 ultrasonic water meter is very suitable for high dynamic range should be
. comparator offset programmable adjustment range increased to 35 mV, and the comparator offset will automatically back in the first wave detection
To 0 points of comparison. Measure the first echo pulse relative width will give the user a for received signal strength by the prompt information can prompt.
A signal for long term covering system weakened judgment, as well as for bubble detection. A plurality of pulse measurement data processing and data read function will be greater than
TDC-GP21 is more simple and convenient. (2014-10-30, PDF, 5745KB, 下载49次)
VS1003 是一个单片MP3/WMA/MIDI音频解码器和ADPCM编码器。它包含一个高性能，自主产权的低功
耗DSP 处理器核VS_DSP4,工作数据存储器，为用户应用提供5KB 的指令RAM 和0.5KB 的数据RAM。
串行的控制和数据接口，4 个常规用途的I/O 口，一个UART，也有一个高品质可变采样率的ADC和立体
声DAC，还有一个耳机放大器和地线缓冲器。
VS1003 is a single-chip MP3/WMA/MIDI ADPCM audio decoder and encoder. It contains a high performance, proprietary low-power
Consumption of DSP processor core VS_DSP4, working data memory, applications for the user instructions 5KB RAM and 0.5KB of data RAM.
Serial control and data interface, four general-purpose I/O port, a UART, there is a high-quality variable-sample rate and stereo ADC
Sound DAC, headphone amplifier and ground and a buffer.
(2011-04-03, PDF, 644KB, 下载5次)
近年来，移动通信技术发展迅速，新技术层出不穷，
宽带无线接入技术由于具有网络设计灵活、安装迅速方
便、建设速度快、建设造价低廉等突出的优点，在高速因
特网接入、信息家电联网、移动办公、军事、救灾、空间
探险等领域具有非常广阔的应用空间。根据目前的技术
标准和将来的发展，主流的宽带接入技术可以分为：固定
宽带无线接入技术（FBWA）、无线局域网（WLAN）和无
线个域网（WPAN）。其中无线个域网的发展使得人们摆
脱电缆束缚，在近距离内实现各种设备间的通信的梦想
得以实现。基于ZigBee 无线接入技术的WPAN 更以其低
成本、低功耗等特有的优势成为无线接入领域的又一颗
璀璨的新星，给现代信息社会中人们的工作和生活方式
带来一场新的革命。
In recent years, mobile communication technology is developing rapidly, the new technologies have Broadband wireless access technology because of network design flexible, speedy and convenient installation, construction speed, construction of low cost highlight the advantages of high-speed Internet access, information appliances, networking, mobile office, the military, disaster relief, Space exploration and other areas with a very wide application of space. Under the current technical standards and future development, the dominant broadband access technology can be divided into : fixed broadband wireless access technology (FBWA) Wireless local area network (WLAN) and Wireless Personal Area Network (WPAN). Which WPAN development and enabled people to escape from cable restraints, In all wi (2007-05-31, PDF, 38KB, 下载39次)