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1. Describe
ADC0844 and ADC0848CCV are CMOS 8-bit successive approximation A/D converters with multifunctional analog input multiplexers. The 4-channel or 8-channel multiplexer can be configured in single-ended, differential, or pseudo-differential operating modes through software. Differential mode provides low-frequency input common-mode rejection and allows the analog range of the converter to be shifted. In addition, the A/D reference can be adjusted so that the reduced analog range can be converted with 8-bit resolution. A/D is designed to operate through the control bus of various microprocessors. The three-state output latch that directly drives the data bus allows the A/D to be configured as a memory location or I/O device for the microprocessor without the need for interface logic.
2. Feature
1. Simple interface with all microprocessors
2. Operate proportionally or with a 5 VDC reference voltage
3. No need for zero or full scale adjustment
4. 4-channel or 8-channel multiplexer with address logic
5. Internal clock
6. 0V to 5V input range, single 5V power supply
7. Standard width 20-pin or 24-pin PDIP
8. 28-pin PLCC package
3. Main specifications
1. Resolution: 8 bits
2. Total unadjusted error: ±½ LSB and ± 1 LSB
3. Single power supply: 5 VDC
4. Low power consumption: 15 milliwatts
5. Conversion time: 40 μs
4. Pin configuration
5. Electrical Characteristics
6. Package outline
