DatasheetsPDF.com

AD7768-4 Dataheets PDF



Part Number AD7768-4
Manufacturers Analog Devices
Logo Analog Devices
Description Simultaneous Sampling ADC
Datasheet AD7768-4 DatasheetAD7768-4 Datasheet (PDF)

Data Sheet AD7768/AD7768-4 8-/4-Channel, 24-Bit, Simultaneous Sampling ADCs with Power Scaling, 110.8 kHz Bandwidth FEATURES ► Precision ac and dc performance ► 8-/4-channel simultaneous sampling ► 256 kSPS maximum ADC ODR per channel ► 108 dB dynamic range ► DC to 110.8 kHz maximum input bandwidth (−3 dB bandwidth) ► −120 dB THD, typical ► ±2 ppm of full-scale range (FSR) integral nonlinearity (INL), ±50 µV offset error, ±30 ppm of FSR gain error ► Optimized power dissipation vs. noise vs. i.

  AD7768-4   AD7768-4



Document
Data Sheet AD7768/AD7768-4 8-/4-Channel, 24-Bit, Simultaneous Sampling ADCs with Power Scaling, 110.8 kHz Bandwidth FEATURES ► Precision ac and dc performance ► 8-/4-channel simultaneous sampling ► 256 kSPS maximum ADC ODR per channel ► 108 dB dynamic range ► DC to 110.8 kHz maximum input bandwidth (−3 dB bandwidth) ► −120 dB THD, typical ► ±2 ppm of full-scale range (FSR) integral nonlinearity (INL), ±50 µV offset error, ±30 ppm of FSR gain error ► Optimized power dissipation vs. noise vs. input bandwidth ► Selectable power, speed, and input bandwidth ► Fast (highest speed): 110.8 kHz bandwidth, 51.5 mW per channel ► Median (half speed): 55.4 kHz bandwidth, 27.5 mW per channel ► Low power (lowest power): 13.8 kHz bandwidth, 9.375 mW per channel ► Per channel digital filter ► Programmable input bandwidth/sampling rates ► CRC error checking on data interface ► Daisy-chaining FUNCTIONAL BLOCK DIAGRAM ► Linear phase digital filter ► Low latency sinc5 filter ► Wideband brick wall filter: ±0.005 dB pass band ripple to 102.4 kHz ► Analog input precharge and reference precharge buffers ► Power supply ► AVDD1 = 5.0 V, AVDD2 = 2.25 V to 5.0 V ► IOVDD = 2.5 V to 3.3 V or IOVDD = 1.8 V ► 64-lead LQFP, no exposed pad ► Temperature range: −40°C to +105°C APPLICATIONS ► Data acquisition systems: USB/PXI/Ethernet ► Instrumentation and industrial control loops ► Audio testing and measurement ► Vibration and asset condition monitoring ► 3-phase power quality analysis ► Sonar ► High precision medical electroencephalogram (EEG)/electro- myography (EMG)/electrocardiogram (ECG) Figure 1. Rev. C DOCUMENT FEEDBACK TECHNICAL SUPPORT Information furnished by Analog Devices is believed to be accurate and reliable "as is". However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Data Sheet TABLE OF CONTENTS Features................................................................ 1 Applications........................................................... 1 Functional Block Diagram......................................1 General Description...............................................4 Specifications........................................................ 5 1.8 V IOVDD Specifications............................. 12 Timing Specifications....................................... 16 1.8 V IOVDD Timing Specifications..................17 Absolute Maximum Ratings.................................21 Thermal Resistance......................................... 21 ESD Caution.....................................................21 Pin Configurations and Function Descriptions.....22 Typical Performance Characteristics................... 30 Terminology......................................................... 40 AC Common-Mode Rejection Ratio (AC CMRR)........................................................... 40 Gain Error.........................................................40 Gain Error Drift................................................. 40 Integral Nonlinearity (INL) Error....................... 40 Intermodulation Distortion (IMD)...................... 40 Least Significant Bit (LSB)................................40 Offset Error.......................................................40 Power Supply Rejection Ratio (PSRR)............ 40 Signal-to-Noise Ratio (SNR)............................ 40 Signal-to-Noise-and-Distortion Ratio (SINAD).......................................................... 40 Spurious-Free Dynamic Range (SFDR)...........40 Total Harmonic Distortion (THD)...................... 40 Theory of Operation.............................................41 Clocking, Sampling Tree, and Power Scaling.. 41 Noise Performance and Resolution..................43 Applications Information...................................... 45 Power Supplies................................................ 46 Device Configuration........................................ 47 Pin Control .......................................................47 SPI Control....................................................... 50 SPI Control Functionality .................................51 SPI Control Mode Extra Diagnostic Features...54 Circuit Information............................................... 55 Core Signal Chain ........................................... 55 Analog Inputs................................................... 56 VCM................................................................. 58 Reference Input................................................58 Clock Selection.................................................58 Digital Filtering...


AD7770 AD7768-4 AD7761


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)