Features and Benefits

  • 8-Bit ADC with 4 µs Conversion Time
  • Small Footprint 8-Lead microSOIC Package
  • Specified Over a –40°C to +125°C Temperature Range
  • Inherent Track-and-Hold Functionality
  • Operating Supply Range: 2.7 V to 5.5 V
  • Optional Automatic Power-Down
  • Microcontroller Compatible Serial Interface
  • Specifications at 2.7 V to 5.5 V and 
    5 V ± 10%
  • Low Power Operation:
    570 µW at 10 kSPS Throughput Rate
    2.9 mW at 50 kSPS Throughput Rate
  • Analog Input Range: 0 V to VREF
  • Reference Input Range: 0 V to VDD
  • "Drop In" Upgrade to 10 Bits Available (AD7810)

Product Details

The AD7823 is a high speed, low power, 8-bit A/D converter that operates from a single 2.7 V to 5.5 V supply. The part contains a 4.5 µs successive approximation A/D converter, inherent track-and-hold functionality (with a pseudo differential input) and a high speed serial interface that interfaces to most microcontrollers. AD7823 is fully specified over a temperature range of -40°C to +125°C.

By using a technique that samples the state of the CONVST (convert start) signal at the end of a conversion, the AD7823 may be used in an automatic power-down mode. When used in this mode, the AD7823 powers down automatically at the end of a conversion and "wakes up" at the start of a new conversion. This feature significantly reduces the power consumption of the part at lower throughput rates. The AD7823 can also operate in a high speed mode where the part is not powered down between conversions. In this high speed mode of operation, the conversion time of the AD7823 is 4.5 µs. The maximum throughput rate is dependent on the speed of the serial interface of the microcontroller.

The part is available in a small, 8-pin 0.3" wide, plastic dual-in-line package (mini-DIP); in an 8-lead, small outline IC (SOIC); and in an 8-lead microSOIC package.

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

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