ADS7824

® ADS 782 4 ADS7824 782 4 ADS www.burr-brown.com/databook/ADS7824.html 4 Channel, 12-Bit Sampling CMOS A/D Converter FEATURES q 25µs max SAMPLING AND CONVERSION q SINGLE +5V SUPPLY OPERATION q PIN-COMPATIBLE WITH 16-BIT ADS7825 q PARALLEL AND SERIAL DATA OUTPUT q 28-PIN 0.3" PLASTIC DIP AND SOIC q ±0.5 LSB max INL AND DNL q 50mW max POWER DISSIPATION q 50µW POWER DOWN MODE q ±10V INPUT RANGE, FOUR CHANNEL MULTIPLEXER q CONTINUOUS CONVERSION MODE DESCRIPTION The ADS7824 can acquire and convert 12 bits to within ±0.5 LSB in 25µs max while consuming only 50mW max. Laser-trimmed scaling resistors provide the standard industrial ±10V input range and channelto-channel matching of ±0.1%. The ADS7824 is a low-power 12-bit sampling A/D with a four channel input multiplexer, S/H, clock, reference, and a parallel/serial microprocessor interface. It can be configured in a continuous conversion mode to sequentially digitize all four channels. The 28-pin ADS7824 is available in a plastic 0.3" DIP and in a SOIC, both fully specified for operation over the industrial –40°C to +85°C range. Continuous Conversion 40kΩ AIN0 Clock 20kΩ 40kΩ AIN1 20kΩ 40kΩ AIN2 20kΩ 40kΩ AIN3 20kΩ 8kΩ CAP 6kΩ REF 8kΩ 8kΩ 8kΩ CDAC CONTC Channel A0 A1 R/C CS PWRD Successive Approximation Register and Control Logic BUSY Serial Comparator Data Out or Parallel Data Out Buffer Internal +2.5V Ref 8 D7-D0 BYTE SDATA DATACLK International Airport Industrial Park Mailing Address: PO Box 11400, Tucson, AZ 8573...