AD7705 Dual 16 Bit ADC

AD7705 Dual 16 Bit ADC


The AD7705 is a high-resolution, low-power, dual 16-bit sigma-delta analog-to-digital converter (ADC) designed for low-frequency measurement applications. It provides a versatile interface for digitizing a wide range of analog signals, making it ideal for use in precision instrumentation, industrial process control, and other applications requiring accurate data conversion.

Key Features:

  • Dual Channel: Two independent 16-bit ADC channels for simultaneous signal measurement.
  • Sigma-Delta Architecture: Ensures high accuracy and low noise performance.
  • Low Power Consumption: Ideal for battery-powered and portable applications.
  • Programmable Gain: Configurable gain settings to accommodate various signal ranges.
  • Flexible Interface: Supports serial communication with microcontrollers and DSPs.
  • Internal Reference: Includes a stable internal reference for precise measurements.
  • Differential Inputs: Provides differential input capability for improved noise rejection.

Technical Specifications:

  • Resolution: 16 bits
  • Number of Channels: 2
  • Input Type: Differential
  • Reference Voltage: 2.5V (internal) or external reference
  • Power Supply: 2.7V to 3.3V (low voltage version) or 4.75V to 5.25V (standard version)
  • Power Consumption: 1mW (typical at 3V)
  • Data Rate: Up to 1kHz (selectable)
  • Interface: SPI-compatible serial interface
  • Operating Temperature Range: -40°C to +85°C
  • Package Type: 16-lead SOIC, 16-lead PDIP


  • Precision Instrumentation: High-resolution data acquisition for laboratory and industrial instruments.
  • Process Control: Monitoring and control of industrial processes requiring accurate signal conversion.
  • Portable Devices: Low-power ADC for battery-operated measurement systems.
  • Medical Equipment: High-resolution data conversion for medical diagnostic devices.
  • Environmental Monitoring: Accurate measurement of environmental parameters.

For detailed technical specifications, refer to the AD7705 Dual 16 Bit ADC Datasheet.

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