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AD7827:  3/5V, 1 MSPS, 8-Bit, Serial Interface Sampling ADC

Product Details

The AD7827 is a high speed, single channel, low power, analog-to- digital converter with a maximum throughput of 1 MSPS that operates from a single 3 V or 5 V supply. The AD7827 contains a track/hold amplifier, an on-chip 2.5 V reference (2% tolerance), a 420 ns 8-bit half-flash ADC and a serial interface. The serial interface is compatible with the serial interfaces of most DSPs (Digital Signal Processors). The throughput rate of the AD7827 is dependent on the clock speed of the DSP serial interface.

FEATURES and BENEFITS

  • 8-Bit Half-Flash ADC with 420 ns Conversion Time 200 ns Acquisition Time
  • 8-Lead Package
  • On-Chip Track-and-Hold
  • On-Chip 2.5 V Reference with 2% Tolerance
  • Operating Supply Range: 3 V ± 10% and 5 V ± 10%
  • Specifications @ 3 V and 5 V
  • DSP/Microcontroller Compatible Serial Interface
  • Automatic Power-Down at End of Conversion
  • Input Ranges:
    0 V to 2 V, VDD = 3 V
    0 V to 2.5 V, VDD = 5 V

Functional Block Diagram for AD7827

Documentation

Title Content Type File Type
AD7827: 3/5 V, 1 MSPS, 8-Bit Serial Interface Sampling ADC Data Sheet (Rev 0, 01/1998) (pdf, 185 kB) Data Sheets PDF
AN-215: Designer's Guide to Flash-ADC Testing, Part 1, 2 & 3  (pdf, 1596 kB)
Flash ADCs Provide the Basis for High Speed Conversion.
Application Notes PDF
AN-592: Application Considerations for the Convert Start Input (CONVST Bar) of the AD7822/AD7825/AD7827/AD7829  (pdf, 37 kB) Application Notes PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

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