The AD1170 is a complete microcomputer-based measurement subsystem featuring a charge balancing converter, a single chip microcomputer, and a custom CMOS controller. It offers low nonlinearity (integral: + 0.001%, differential: + 0.00035%) and programmable integration times ranging from 1 to 350 milliseconds.
The device supports resolutions from 7 to 22 bits with a throughput of over 50 conversions per second for line cycle integration. It includes auto-zeroed operation, electronic calibration eliminating the need for trim potentiometers, and interfaces via an 8-bit data bus in memory or I/O mapped fashion.
| Integral Nonlinearity | + 0.001% |
|---|---|
| Differential Nonlinearity | + 0.00035% |
| Programmable Integration Time | 1 to 350ms |
| Resolution Range | 7 to 22 Bits |
| High Normal Mode Rejection | 54dB at 60Hz |
| Package Size | 1.24" x 2.5" x 0.55" |
It uses electronic digital calibration that eliminates the need for trim potentiometers, with data stored in an internal nonvolatile memory chip.
The maximum conversion rate is greater than 250 conversions per second when using a one millisecond integration period.