For example, running at the 3.5kHz conversion speed but reading data at a 100Hz rate draws 240♚ average current (1.1mW) while reading data at a 7Hz output rate draws only 25♚ (125µW).The LTC2440 communicates through a flexible 3-wire or 4-wire digital interface that is compatible with the LTC2410 and is available in a narrow 16-lead SSOP package.ĪDI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. Power dissipation may be reduced by increasing the duration of this sleep state. Since there is no latency, a speed/resolution change may be made between conversions with no degradation in performance.įollowing each conversion cycle, the LTC2440 automatically enters a low power sleep state. The accuracy (offset, full-scale, linearity, drift) and power dissipation are independent of the speed selected. Alternatively, by tying a single pin HIGH or LOW, a fast (880Hz/2µV RMS) or ultralow noise (6.9Hz, 200nV RMS, 50/60Hz rejection) speed/resolution combination can be easily selected. Ten speed/resolution combinations (6.9Hz/ 200nV RMS to 3.5kHz/25µV RMS) are programmed through a simple serial interface. It uses proprietary Delta Sigma architecture enabling variable speed and resolution with no latency. The LTC2440 is a high speed 24-bit No Latency ∆∑ ™ ADC with 5ppm INL and 5µV offset.
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