1. Products
  2. A/D Converters (ADC)
  3. Precision A/D Converters
  4. Single Channel A/D Converters
  5. AD7091


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.


  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 Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
AD7091BCPZ-RL Material Declaration Reliability Data 8-Lead LFCSP (2mm x 2mm w/ EP)
AD7091BCPZ-RL7 Material Declaration Reliability Data 8-Lead LFCSP (2mm x 2mm w/ EP)
Wafer Fabrication Data

PCN-PDN Information

Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

Sample & Buy

Ordering FAQs

See our Ordering FAQs for answers to questions about online orders, payment options and more.


Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Price Table Help


Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

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.