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AD7680 数据表(PDF) 1 Page - Analog Devices |
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AD7680 数据表(HTML) 1 Page - Analog Devices |
1 / 11 page AD7680 a REV. PrE 11/02 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 Analog Devices, Inc., 2002 3mW, 100kSPS, 16-Bit ADC in 6 Lead SOT-23 Preliminary Technical Data PRELIMINARY TECHNICAL DATA FUNCTIONAL BLOCK DIAGRAM FEATURES Fast Throughput Rate: 100kSPS Specified for VDD of 2.5 V to 5.25 V Low Power: 2.5mW typ at 100kSPS with 3V Supplies 15mW typ at 100kSPS with 5V Supplies Wide Input Bandwidth: 85dB SNR at 10kHz Input Frequency Flexible Power/Serial Clock Speed Management No Pipeline Delays High Speed Serial Interface SPI/QSPI/ µµµµµWire/DSP Compatible Standby Mode: 0.5 µA max 6-Lead SOT-23, and 8-Lead MSOP Packages APPLICATIONS Battery-Powered Systems Personal Digital Assistants Medical Instruments Mobile Communications Instrumentation and Control Systems Remote Data Acquisition Systems High-Speed Modems Optical Sensors GENERAL DESCRIPTION The AD7680 is a 16-bit, fast, low power, successive-ap- proximation ADC. The part operates from a single 2.5 V to 5.25 V power supply and features throughput rates up to 100kSPS. The part contains a low-noise, wide band- width track/hold amplifier which can handle input fre- quencies in excess of 100kHz. The conversion process and data acquisition are controlled using CS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and the conversion is also initiated at this point. There are no pipelined delays associated with the part. The AD7860 uses advanced design techniques to achieve very low-power dissipation at fast throughput rates. The reference for the part is taken internally from VDD. This allows the widest dynamic input range to the ADC. Thus the analog input range for the part is 0 to VDD. The conversion rate is determined by the SCLK frequency. PRODUCT HIGHLIGHTS 1. First 16-Bit ADC in a SOT-23 package. 2. High Throughput with Low Power Consumption 3. Flexible Power/Serial Clock Speed Management The conversion rate is determined by the serial clock allowing the conversion time to be reduced through the serial clock speed increase. This allows the average power consumption to be reduced when a powerdown mode is used while not converting. The part also features a shut- down mode to maximize power efficiency at lower throughput rates. Power consumption is 0.5 µA max when in shutdown. 4. Reference derived from the power supply. 5. No Pipeline Delay The part features a standard successive-approximation ADC with accurate control of the sampling instant via a CS input and once off conversion control. T/H VIN AD7680 VDD 16-BIT SUCCESSIVE APPROXIMATION ADC SCLK CONTROL LOGIC SDATA +5 GND |
类似零件编号 - AD7680 |
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类似说明 - AD7680 |
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