The LTC2440 is a high speed 24-bit No Latency Δ∑TM ADC with 5ppm INL and 5μV offset. It uses proprietary delta-sigma architecture enabling variable speed and resolution with no latency. Ten speed/resolution combinations (6.9Hz/200nVRMS to 3.5kHz/25μVRMS) are programmed through a simple serial interface. Alternatively, by tying a single pin HIGH or LOW, a fast (880Hz/2μVRMS) or ultralow noise (6.9Hz, 200nVRMS, 50/60Hz rejection) speed/resolution combination can be easily selected.
The LTC2440 is a 24‑bit delta‑sigma ADC offering up to 3.5 kHz output rate with selectable speed and resolution. It provides low noise (2 µV RMS at 880 Hz) and excellent linearity (0.0005 % INL) while consuming only 30 pA in sleep mode.
The device operates from a 4.5 V to 5.5 V supply, supports both 3‑wire and 4‑wire digital interfaces, and includes pins for differential analog input, reference, and programmable speed selection. Ten speed/resolution combinations are available, and the part is pin‑compatible with the LTC2410.
| Resolution | 24 bits |
|---|---|
| Integral Nonlinearity (INL) | 0.0005 % (5 ppm) |
| Speed/Resolution Options | 10 combinations |
It provides ten selectable speed/resolution combinations.