AD7861 11-Bit Resolution Simultaneous Sampling ADC

Motor Control 3-Phase Power Measurement Cellular Phones Data Acquisition

The AD7861 is a multichannel simultaneous sampling A/D Converter (ADC) configured for the acquisition of voltage inputs in a motor control solution or three-phase power system.

The AD7861 combined with Analog Devices’ 16-bit fixed-point digital signal processor (DSP) provides a low cost 16-bit fixed-point microcontroller solution. The input stage has been designed to accommodate the types of signals frequently found in motor drives. The VIN1, VIN2, and VIN3 channels are simultaneously sampled inputs suitable for stator current acquisition. The AUX0–AUX3 channels are multiplexed and are suitable for slower moving inputs such as temperature and bus voltage of the diode rectifier output in a motor control application.

APPLICATIONS

Features and Benefits
  • 11-Bit Resolution Analog-to-Digital Converter
  • Seven Single-Ended Analog Inputs
    Four Input Channels Simultaneously Sampled
    Expansion with 4 Multiplexed Inputs
  • Internal 2.5 V Reference
  • 3.2 µs Conversion Time per Channel
  • User Definable Channel Sequencing
  • Single Supply +5 V Operation
  • Double Buffered Register Outputs
  • 6.25 MHz to 12.5 MHz Operating Clock Range
Analog to Digital Converters
Data Sheets
Documentnote
AD7861: 11-Bit Resolution Simultaneous Sampling A/D Converter Data Sheet (Rev. B)PDF 95 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
AD7861AP Last Time Buy44 ld PLCCOTH 27-40 to 85C00N
AD7861APZ Production44 ld PLCCOTH 27-40 to 85C18.5115.56Y
Reference Materials
AD7861: 11-Bit Resolution Simultaneous Sampling A/D Converter Data Sheet (Rev. B) ad7861
MS-2210:高速ADC的电源设计 ad9861