Analog Devices Inc. AD4001/AD4005 16-Bit Differential SAR ADCs

Analog Devices Inc. AD4001/AD4005 16-Bit Differential Successive Approximation Register (SAR) ADCs feature low noise, low power, and are high-speed ADCs. The AD4001 ADCs offer a 2 MSPS throughput and the AD4005 ADCs offer a 1 MSPS throughput. These 16-bit SAR ADCs operate at 1.8V single-supply voltage with 1.71V to 5.5V logic interface. The AD4001/AD4005 ADCs feature long acquisition phase, input span compression, high-Z mode, input overvoltage clamp circuit, and fast conversion time allows low SPI clock rates.

The AD4001/AD4005 ADCs are compatible with 1.8V, 2.5V, 3V, and 5V logic using the separate VIO supply. These 16-bit ADCs undergo an ability to daisy-chain multiple ADCs and busy indicator. The ADCs are available in a 10-lead 3mm x 3mm LFCSP and 3mm x 4.90mm MSOP and operate at -40°C to 125°C temperature range. Typical applications include battery-powered equipment, precision data acquisition systems, automatic test equipment, and machine automation.

Features

  • Throughput:
    • AD4001 2 MSPS
    • AD4005 1 MSPS
  • Integral Non-Linearity (INL): ±0.4 LSB maximum
  • Guaranteed 16-bit no missing codes
  • Low power:
    • 9.5mW at 2 MSPS and 4.9mW at 1 MSPS (VDD only)
    • 80μW at 10 kSPS and 16mW at 2 MSPS (total)
  • Ease of use features reduce system power and complexity:
    • Input overvoltage clamp circuit
    • Reduced nonlinear input charge kickback
    • High-Z mode
    • Long acquisition phase
    • Input span compression
    • Fast conversion time allows low SPI clock rates
    • SPI-programmable modes, read/write capability, and status word
  • Differential analog input range: ±VREF:
    • 0V to VREF with VREF from 2.4V to 5.1V
  • Single 1.8V supply operation with 1.71V to 5.5V logic interface
  • SAR architecture:
    • No latency/pipeline delay and valid first conversion
  • First accurate conversion
  • -40°C to 125°C operating temperature range
  • SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
  • Ability to daisy-chain multiple ADCs and busy indicator
  • 10-lead packages:
    • 3mm × 3mm LFCSP
    • 3mm × 4.90mm MSOP

Applications

  • Automatic test equipment
  • Machine automation
  • Medical equipment
  • Battery-powered equipment
  • Precision data acquisition systems

Functional block Diagram

Block Diagram - Analog Devices Inc. AD4001/AD4005 16-Bit Differential SAR ADCs
Published: 2020-03-16 | Updated: 2022-06-27