Features and Benefits

  • Normal Operation
    AD7859: 15 mW (VDD = 3 V)
    AD7859L: 5.5 mW (VDD = 3 V)
  • Using Automatic Power-Down After Conversion (25 µW)
    AD7859: 1.3 mW (VDD = 3 V 10 kSPS)
    AD7859L: 650 µW (VDD = 3 V 10 kSPS)
  • Specified for VDD of 3 V to 5.5 V
  • AD7859–200 kSPS
  • AD7859L–100 kSPS
  • System and Self-Calibration
  • Flexible Parallel Interface:
    16-Bit Parallel/8-Bit Parallel
  • 44-Pin PQFP and PLCC Packages

Product Details

The AD7859/AD7859L are high speed, low power, 8-channel, 12-bit ADCs which operate from a single 3 V or 5 V power supply, the AD7859 being optimized for speed and the AD7859L for low power. The ADC contains self-calibration and system calibration options to ensure accurate operation over time and temperature and have a number of power-down options for low power applications.

The AD7859 is capable of 200 kHz throughput rate while the AD7859L is capable of 100 kHz throughput rate. The input track-and-hold acquires a signal in 500 ns and features a pseudo-differential sampling scheme. The AD7859 and AD7859L input voltage range is 0 to VREF (unipolar) and -VREF/2 to +VREF/2 about VREF/2 (bipolar) with both straight binary and 2s complement output coding respectively. Input signal range is to the supply and the part is capable of converting full-power signals to 100 kHz.

CMOS construction ensures low power dissipation of typically 5.4 mW for normal operation and 3.6 µW in power-down mode. The part is available in 44-pin, plastic quad flatpack package (PQFP) and plastic lead chip carrier (PLCC).

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.

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.

PCN-PDN Information

Sample & Buy

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


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.

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