Analog Devices Inc. AD4003/AD4007/AD4011 18-Bit Differential SAR ADCs

Analog Devices Inc. AD4003/AD4007/AD4011 18-Bit Differential Successive Approximation Register (SAR) ADCs feature high accuracy, high speed, and are low power ADCs. The 18-bit SAR ADCs operate at 1.8V single supply operation with 1.71V to 5.5V logic interface. These SAR ADCs with high throughput allows accurate capture of high frequency signals and decimation to achieve high Signal-to-Noise Ratio (SNR). The AD4003/AD4007/AD4011 18-bit ADCs undergo an ability to daisy-chain ADCs and operate at -40°C to 125°C temperature range. These SAR ADCs include SPI compatible versatile serial interface that features seven different programmable modes with an optional busy indicator.

The AD4003/AD4007/AD4011 18-bit SAR ADCs are compatible with 1.8V, 2.5V, 3V, and 5V logic that uses a separate supply VIO. Typical applications include automatic test equipment, precision data acquisition systems, machine automation, medical equipment, and battery-powered equipment.


  • 2MSPS/1MSPS/500kSPS throughput options
  • ±1.0 LSB (±3.8ppm) maximum INL
  • Guaranteed 18-bit no missing codes
  • Low power
    • 4.9mW/MSPS, 2.4mW @ 500kSPS, VDD only
    • 8mW/MSPS, 80μW @ 10kSPS, 16mW @ 2MSPS total
  • SNR:
    • 100.5dB @ fIN = 1kHz, 99dB @ fIN = 100kHz
  • Oversampled SNR:
    • 103.5dB @ 1.0MSPS, OSR = 2
    • 130.5dB @t 1.9kSPS, OSR = 1024
  • THD:
    • -123dB @ fIN = 1kHz and -100dB @ fIN = 100kHz
  • SINAD:
    • 89dB @ fIN = 1MHz
  • Easy drive:
    • Greatly reduced input kickback
      • Input current reduced to 0.5μA/MSPS
    • Long acquisition phase, ≥79% of cycle time at 1MSPS
    • Input span compression for single-supply operation
    • Input overvoltage clamp protection sinks up to 50mA
  • ±VREF differential input range
  • 2.4V to 5.1V VREF input range
  • Single 1.8V supply operation with 1.71V to 5.5V logic interface
  • First conversion accurate, no latency/pipeline delay
  • Fast conversion time allows low SPI clock rates
  • SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
  • Ability to daisy-chain multiple ADCs
  • -40°C to 125°C operating temperature range
  • 10-lead packages:
    • 3mm x 3mm LFCSP and 3mm x 4.90mm MSOP
  • Pin compatible with AD4000/AD4004/AD4008 family

Functional Block Diagram

Block Diagram - Analog Devices Inc. AD4003/AD4007/AD4011 18-Bit Differential SAR ADCs
Published: 2020-03-09 | Updated: 2022-03-10