Analog Devices Inc. AD7091 & AD7091R Ultralow Power 12-Bit ADCs

Analog Devices Inc. AD7091 and AD7091R Ultralow Power 12-Bit ADCs offers ultralow power consumption (typically 349μA at 3V and 1MSPS) while achieving fast throughput rates (1MSPS with a 50MHz SCLK). Operating from a single 2.7V to 5.25V power supply, the part contains a wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 7MHz. 

The AD7091 and AD7091R also feature an on-chip conversion clock, accurate reference, and high speed serial interface. The conversion process and data acquisition are controlled using a CONVST signal and an internal oscillator. The AD7091 and AD7091R has a serial interface that allows data to be read after the conversion while achieving a 1MSPS throughput rate. The AD7091 and AD7091R uses advanced design and process techniques to achieve very low power dissipation at high throughput rates.


  • Fast throughput rate of 1MSPS
  • Specified for VDD of 2.7V to 5.25V
  • Logic voltage VDRIVE of 1.65V to 5.25V
  • INL of ±1 LSB maximum
  • Analog input range of 0V to VREF
  • Ultralow power
  • 349μA typical at 3V and 1MSPS
  • 264nA typical at 3V in power-down mode
  • Internal 2.5V reference, ±4.5ppm/°C typical drift
  • Wide input bandwidth
  • Flexible power/throughput rate management
  • High speed serial interface
  • SPI®/QSPI™/MICROWIRE™/DSP compatible
  • BUSY indicator
  • Power-down mode
  • 10-lead, 3mm × 2mm LFCSP and 10-lead MSOP packages
  • Temperature range of −40°C to +125°C


  • Battery-powered systems
  • Handheld meters
  • Medical instruments
  • Mobile communications
  • Instrumentation and control systems
  • Data acquisition systems
  • Optical sensors
  • Diagnostic/monitoring functions
  • Energy harvesting
Publicado: 2013-07-01 | Actualizado: 2022-03-11