Pico ADC-20 – High-Resolution Data Logger
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Pico ADC-20 - High-Resolution Data Logger Specs
| ADC-20 | ADC-24 |
| Input channels Differential Single-ended | Configurable up to 4 Configurable up to 8 |
| Conversion time per channel | 60 ms, 100 ms, 180 ms, 340 ms, 660 ms |
| Input voltage ranges | 2 ranges ±1250 mV and ±2500 mV |
| Resolution | 20 bits |
| Noise-free resolution | See table below |
| Overvoltage protection | ±30 V between any input and common |
| Common-mode range Channel to common Channel to common Common to earth ground | ±1.9 V (±39 mV to ±1250 mV ranges) ±3.0 V (±2500 mV range) ±30 V |
| Noise rejection | 120 dB typical at 50 to 60 Hz |
| Input impedance | 2 MΩ (differential), 1 MΩ (single-ended) |
| Gain error from source impedance | 0.5 ppm per ohm source impedance due to input impedance |
| Gain error | 0.2% |
| Offset error | 6 µV (±39 mV range) 7 µV (±78 mV range) 9 µV (±156 mV range) 13 µV (±313 mV range) 20 µV (±625 mV range) 36 µV (±1250 mV range) 400 µV (±2500 mV range) |
| Digital I/O | None |
| Output level, high Output level, low Input level, high Input level, low | > 2.40 V 2.20 V < 0.88 V |
| Isolation (input to input) | None |
| Isolation (input to ground) | Galvanic, up to ±30 V AGND and DGND isolated |
| Reference output | +2.5 V ±2.5 mV @ 2 mA |
| Power outputs | +5 V ±1.0 V @ 2 mA -5 V ±1.5 V @ 2 mA |
| Environmental conditions Operating temperature Quoted input accuracy Storage temperature Operating humidity Storage humidity | 0 ºC to 45 ºC 20 ºC to 30 ºC -20 ºC to 60 ºC 5% to 80% RH, non-condensing 5% to 95% RH, non-condensing |
| Recommended calibration interval | 1 year |
| PC connection | USB 1.1 (USB 2.0 compatible) Cable length approx. 4.4 m (13.8 ft) |
| Input connector | DB25 female |
| Power supply | 100 mA (max.) from USB port |
| Dimensions | 13.5 cm x 18.4 cm x 3.6 cm (5.31 in x 7.24 in x 1.41 in) |
| Weight | Approx. 505 g (17.8 oz) |
| Conversion time per channel | Voltage range & Noise-free resolution (bits) |
| 39 mV | 78 mV |
| ADC-24 only | ADC-20 and ADC-24 |
| 660 ms | 17 |
| 340 ms | 17 |
| 180 ms | 16 |
| 100 ms | 16 |
| 60 ms | 15 |
- ADC-20 High-Resolution Data Logger
- Pico Technology Software and Reference CD
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