By using a half-flash conversion technique, the 8-bit ADC0820-N CMOS A/D offers a 1.5 µs
conversion time and dissipates only 75 mW of power. The half-flash technique consists of 32
comparators, a most significant 4-bit ADC and a least significant 4-bit ADC.
The input to the ADC0820-N is tracked and held by the input sampling circuitry
eliminating the need for an external sample-and-hold for signals moving at less than 100
For ease of interface to microprocessors, the ADC0820-N has been designed to appear as a
memory location or I/O port without the need for external interfacing logic.
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