Features and Benefits

  • Fast throughput rate: 1 MSPS
  • Specified for VDD of 2.09 V to
    5.25 V
  • INL of ±1 LSB maximum
  • Analog input range of 0 V to VDD
  • Ultralow power
    367 µA typical at 3 V and 1 MSPS
    324 nA typical at 3 V in power-down mode
  • Reference provided by VDD
  • Flexible power/throughput rate management
  • High speed serial interface:
  • Busy indicator
  • Power-down mode
  • 8-lead, 2 mm × 2 mm LFCSP package
  • Temperature range: -40°C to +125°C

Product Details

The AD7091 is a 12-bit successive approximation register analog-to-digital converter (SAR ADC) that offers ultralow power consumption (typically 367 μA at 3 V and 1 MSPS) while achieving fast throughput rates (1 MSPS with a 50 MHz SCLK). The AD7091 operates from a single 2.09 V to 5.25 V power supply. The AD7091 also features an on-chip conversion clock and a high speed serial interface.

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

The reference is derived internally from VDD. This design allows the widest dynamic input range to the ADC; that is, the analog input range for the AD7091 is from 0 V to VDD.

Product Highlights

  1. Lowest power 12-bit SAR ADC available.
  2. High Throughput Rate with Ultralow Power Consumption.
  3. Flexible Power/Throughput Rate Management. Average power scales with the throughput rate. Power-down mode allows the average power consumption to be reduced when the device is not performing a conversion.
  4. Reference Derived from the Power Supply.
  5. Single Supply Operation.


  • Battery-powered systems
     Handheld meters
     Medical instruments
     Mobile communications
  • Instrumentation and control systems
  • Data acquisition systems
  • Optical sensors
  • Diagnostic/monitoring functions
  • Energy harvesting

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

Software & Systems Requirements

Tools & Simulations

IBIS Models

Product Recommendations

AD7091 Companion Parts

Recommended Driver Amplifiers

Recommended External References for Vdd

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.