文件名称：ads8345使用手册
文件大小：800KB
文件格式：PDF
更新时间：2017-03-30 17:19:12
ads8345
ads834516-Bit, 8-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTER FEATURES ● BIPOLAR INPUT RANGE ● PIN-FOR-PIN COMPATIBLE WITH THE ADS7844 AND ADS8344 ● SINGLE SUPPLY: 2.7V to 5V ● 8-CHANNEL SINGLE-ENDED OR 4-CHANNEL DIFFERENTIAL INPUT ● UP TO 100kHz CONVERSION RATE ● 85dB SINAD ● SERIAL INTERFACE ● QSOP-20 AND SSOP-20 PACKAGES DESCRIPTION The ADS8345 is an 8-channel, 16-bit, sampling Analog-to-Digital (A/D) converter with a synchronous serial interface. Typical power dissipation is 8mW at a 100kHz throughput rate and a +5V supply. The reference voltage (VREF) can be varied between 500mV and VCC/2, providing a corresponding input voltage range of ±VREF. The device includes a shutdown mode which reduces power dissipation to under 15µW. The ADS8345 is ensured down to 2.7V operation. Low-power, high-speed, and an onboard multiplexer make the ADS8345 ideal for battery-operated systems such as personal digital assistants, portable multi-channel data log- gers, and measurement equipment. The serial interface also provides low-cost isolation for remote data acquisition. The ADS8345 is available in a QSOP-20 or SSOP-20 package and is ensured over the –40°C to +85°C temperature range. CDAC SAR Comparator 8-Channel Multiplexer Serial Interface and Control CH4 CH5 CH6 CH7 COM VREF CS SHDN DIN DOUT BUSY DCLK CH0 CH1 CH2 CH3 ® A D S 8 3 4 5 ® ADS8345 ADS8345 SBAS177C – FEBRUARY 2001 – REVISED APRIL 2003 www.ti.com PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2001-2003, Texas Instruments Incorporated Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. APPLICATIONS ● DATA ACQUISITION ● TEST AND MEASUREMENT EQUIPMENT ● INDUSTRIAL PROCESS CONTROL ● PERSONAL DIGITAL ASSISTANTS ● BATTERY-POWERED SYSTEMS