The ADS7821 is a complete 16-bit sampling A/Dusing state-of-the-art CMOS structures. It contains acomplete 16-bit, capacitor-based, SAR A/D with S/H,reference, clock, interface for microprocessor use, andthree-state output drivers.The ADS7821 is specified at a 100kHz sampling rate,and guaranteed over the full temperature range. Lasertrimmedscaling resistors provide a 0 to +5V inputrange, with power dissipation under 100mW.The 28-pin ADS7821 is available in a plastic 0.3" DIPand in an SOIC, both fully specified for operation overthe –25°C to +85°C range.
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