The ADC0844 and ADC0848 are CMOS 8-bit successive approximation A/D converters with versatile analog input multiplexers. The 4-channel or 8-channel multiplexers can be software configured for single-ended, differential or pseudo-differential modes of operation. The differential mode provides low frequency input common mode rejection and allows offsetting the analog range of the converter. In addition, the A/D’s reference can be adjusted enabling the conversion of reduced analog ranges with 8-bit resolution. The A/Ds are designed to operate from the control bus of a wide variety of microprocessors. TRI-STATE output latches that directly drive the data bus permit the A/Ds to be configured as memory locations or I/O devices to the microprocessor with no interface logic necessary.
The ADC0844 and ADC0848 are CMOS 8‑bit successive‑approximation A/D converters featuring 4‑channel or 8‑channel analog input multiplexers that can be configured for single‑ended, differential or pseudo‑differential operation. They are designed for direct connection to a microprocessor data bus with tri‑state output latches, requiring no external interface logic.
The document provides a complete description of the devices, including functional block diagrams, pin‑outs, electrical characteristics, timing diagrams, typical performance curves, mechanical dimensions, ordering information and a life‑support policy notice.
| Resolution | 8 bits |
|---|---|
| Total Unadjusted Error | +% LSB and +1 LSB |
| Supply Voltage | 5 V (single supply) |
| Power Consumption | 15 mW (low power) |
| Conversion Time | 40 µs |
| Multiplexer Channels | 4‑channel or 8‑channel |
| Package Types | 20‑pin or 24‑pin DIP, 28‑pin molded chip carrier |
The conversion time is 40 µs.
They operate from a single 5 V supply.
The device offers either a 4‑channel or an 8‑channel multiplexer.
The converters consume about 15 mW of power.