Analog Devices Inc. AD7264 Simultaneous Sampling SAR ADCs

Analog Devices AD7264 Simultaneous Sampling SAR ADCs are dual, 14-bit, high speed, low power, successive approximation ADCs. The AD7264 operates from a single 5V power supply and features throughput rates of up to 1MSPS per on-chip ADC. Two complete ADC functions allow simultaneous sampling and conversion of two channels. Each ADC is preceded by a true differential analog input with a PGA. There are 14 gain settings available: ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, and ×128.

The AD7264 contains four comparators. Comparator A and Comparator B are optimized for low power, whereas Comparator C and Comparator D have fast propagation delays. The AD7264 features a calibration function to remove any device offset error and programmable gain adjust registers to allow input path (for example, sensor) offset and gain compensation. The AD7264 has an on-chip 2.5V reference that can be disabled if an external reference is preferred. The AD7264 is available in 48-lead LFCSP and LQFP packages.


  • Dual, simultaneous sampling, 14-bit, 2-channel ADC
  • True differential analog inputs
  • ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, ×128 programmable gain stage
  • Throughput rate per ADC
    • 1MSPS for AD7264
  • >1GΩ analog input impedance
  • Wide input bandwidth
    • -3dB bandwidth: 1.7MHz at gain = 2
  • 4 on-chip comparators
  • SNR
    • 78dB typical at gain = 2
    • 71dB typical at gain = 32
  • Device offset calibration
  • System gain calibration
  • 2.5V on-chip reference
  • -40°C to +105°C operation
  • High-speed serial interface compatible with SPI, QSPI™, MICROWIRE™, and DSP
  • 48-lead LFCSP and LQFP packages
Publicado: 2018-03-28 | Atualizado: 2023-01-27