The AD7679 is an 18-bit, 570 kSPS charge redistribution SAR analog-to-digital converter that operates on a single 5 V supply. The datasheet lists an internal conversion clock, an internal reference buffer, error correction circuits, and both serial and parallel system interface ports; the part is available in a 48-lead LQFP or 48-lead LFCSP and specified from –40°C to +85°C.
The document provides specifications, timing specifications, absolute maximum ratings, pin configuration and function descriptions, typical performance characteristics, circuit information, conversion control, digital interface details, application hints, layout guidance, outline dimensions, and an ordering guide.
| Resolution | 18 Bits |
|---|---|
| Throughput | 570 kSPS |
| Differential Input Range | ±VREF (VREF up to 5 V) |
| Integral Linearity Error | ±2.5 LSB max |
| Supply Operation | Single 5 V supply |
| Power Dissipation | 76 mW @ 500 kSPS; 150 μW @ 1 kSPS |
| Package | 48-lead LQFP or 48-lead LFCSP |
| Temperature Range | –40°C to +85°C |
The AD7679 is an 18-bit, 570 kSPS charge redistribution SAR ADC.
It provides parallel (18-, 16-, or 8-bit bus) and serial 5 V/3 V interfaces.
The part is available in a 48-lead LQFP or 48-lead LFCSP package.
Power dissipation is 76 mW at 500 kSPS.