Nanopower single comparator integrates a precision 1.182 V reference and programmable hysteresis. The device operates from a 2 V to 11 V single supply or ±1 V to ±5.5 V dual supplies with typical 0.28 µA supply current at 3 V. Inputs include the negative supply and extend to within 1.3 V of the positive supply, while the CMOS/TTL-compatible output can source continuous current. The DD package is an 8-lead 3 mm × 3 mm plastic DFN with a low 0.8 mm profile.
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| Function | Comparator with voltage reference |
| Comparator channels | 1 |
| Supply voltage range | 2 to 11 single supply; ±1 to ±5.5 dual supplyV |
| Supply current | 0.28 typ, 0.61 max at 3 V, C-gradeµA |
| Reference voltage | 1.182 typV |
| Reference voltage accuracy | ±2 commercial, DFN% |
| Reference source current | 1 maxmA |
| Input offset voltage | ±12 typ, ±15 maxmV |
| Input leakage current | ±0.01 typ, ±1 maxnA |
| Input common-mode range | V- to V+ - 1.3V |
| Propagation delay | 70 at 10 mV overdrive, 60 at 100 mV overdrive, 3 V supplyµs |
| Output high voltage | V+ - 0.4 min at -8 mAV |
| Output low voltage | GND + 0.4 max at 0.8 mAV |
| Hysteresis | Programmable via HYST pin |
| Operating temperature range | 0 to 70, C-grade°C |
| Package dimensions | 3 × 3 × 0.8 nominal DFNmm |
| Pin count | 8 |
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These are design resources that include the Analog LTC1540CDD
Quick start guide for the DC600A evaluation board, featuring the LTC1540 nano-power comparator in a 3mm x 3mm DFN package with an integrated 1.182V voltage reference.
