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AD7091:  1 MSPS, Ultralow Power 12-Bit ADC in 8-Lead LFCSP

Product Details

Product Status:Recommended for New Designs

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.

Applications

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

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:
     SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible
  • Busy indicator
  • Power-down mode
  • 8-lead, 2 mm × 2 mm LFCSP package
  • Temperature range: -40°C to +125°C

AD7091 Functional Block Diagram

Similar Products

Low Resolution - Single Channel Unipolar/Bipolar 8/10/12-Bit PulSAR ADCs

Documentation

Title Content Type File Type
AD7091: 1 MSPS, Ultralow Power, 12-Bit ADC in 8-Lead LFCSP Data Sheet (Rev A, 06/2013) (PDF, 415 kB) Data Sheets PDF
AN-1141: Powering a Dual Supply Precision ADC with Switching Regulators  (pdf, 640 kB) Application Notes PDF
AN-931: Understanding PulSAR ADC Support Circuitry  (pdf, 299 kB)
This application note discusses in general the pitfalls that occur regularly when using SAR ADCs and, more importantly, how to easily prevent them.
Application Notes PDF
AN-935: Designing an ADC Transformer-Coupled Front End  (pdf, 363 kB) Application Notes PDF
The Data Conversion Handbook Design Handbooks HTML
MT-001: Taking the Mystery out of the Infamous Formula, "SNR=6.02N + 1.76dB," and Why You Should Care  (pdf, 94 kB) Tutorials PDF
UG-447: Evaluation Board for the AD7091 Analog-to-Digital Converter  (pdf, 1236 kB) User Guides PDF
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD7091 IBIS Model  (ibs) IBIS Models IBS
BeMicro FPGA Project for AD7091/AD7091R with Nios driver (Wiki Site) Device Drivers HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products


Recommended Driver Amplifiers for the AD7091 Recommended External References for Vdd for the AD7091
  • For a 3V, low power, low noise, we recommend the ADR4530 or the REF193.
  • For a 5V, low power, low noise, we recommend the ADR4550 or the REF195.
Recommended Power Solutions

  • For selecting voltage regulator products, use ADIsimPower.

Were these recommendations helpful?

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Price, packaging, availability

AD7091 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7091BCPZ-RL Status: Production LFCSP:LEADFRM CHIP SCALE 8 Ind Reel, 10000 - $1.60 Y  Material Info PCN Purchase
AD7091BCPZ-RL7 Status: Production 8 ld LFCSP (2x2, w/1.6 x1.0 ep) 8 Ind Reel, 3000 - $1.60 Y  Material Info PCN Purchase Sample
Price Table Help

The USA 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. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

AD7091 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD7091SDZ Status: Production Evaluation Board $59.00 Yes -
EVAL-SDP-CB1Z Status: Production Evaluation Controller Board $99.00 Yes -
AD7091R Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD7091RSDZ Status: Production Evaluation Board $59.00 Yes -
EVAL-SDP-CB1Z Status: Production Evaluation Controller Board $99.00 Yes -

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.

Check Inventory & Purchase

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