| ADC-20 |
ADC-24 |
| Resolution |
20 bits |
24 bits |
| Number of channels# |
4 differential / 8 single-ended |
8 differential / 16 single-ended |
| Conversion time (per channel) |
660 ms, 340 ms, 180 ms, 100 ms, 60 ms |
| Voltage ranges |
±2500 mV
±1250 mV |
±2500 mV
±1250 mV
±625 mV
±312 mV
±156 mV
±78 mV
±39 mV |
| Accuracy |
0.2% |
0.1% (±39 mV to 1250 mV range)
0.2% (±2500 mV range) |
| Noise rejection |
120 dB typical at 50/60 Hz |
| Input impedance |
Differential: 2 MΩ
Single-ended: 1 MΩ |
| Common mode input range, channel to common |
±1.9 V (±39 mV to ±1250 mV ranges)
±3.0 V (±2500 mV range) |
| Common mode input range, common to earth ground |
±30 V |
| Common mode rejection ratio, channel to common |
95 dB (DC to 60 Hz) |
| Common mode rejection ratio, common to earth ground |
> 125 dB (DC to 60 Hz) |
| Overvoltage protection |
±30 V |
| Digital I/O |
none |
4 bidirectional (3.3 V CMOS) |
| Reference output |
+2.5 V ±2.5 mV @ 2 mA
+5 V ±1.0 V @ 2 mA
–5 V ±1.5 V @ 2 mA |
# The ADC-20 and ADC-24 have four and eight true differential input channels respectively. For flexibility each of these channels can be configured as either one differential channel or two single-ended channels.
| PC requirements |
| Minimum |
Processor: 1 GHz.
Memory: 512 MB.
Free disk space: 32-bit: 600 MB, 64-bit: 1.5 GB.
Operating system: 32-bit or 64-bit edition of Microsoft Windows 7, Windows 8 or 10.
Ports: USB 1.1. |
| Recommended |
Processor: 1 GHz.
Memory: 512 MB.
Free disk space: 32-bit: 850 MB, 64-bit: 2 GB.
Operating system: 32-bit or 64-bit edition of Microsoft Windows 7, 8 or 10.
Ports: USB 1.1 or higher. |
| Environmental |
| For quoted accuracy |
20 °C to 30 °C |
| General operation |
0 °C to 45 °C |
| Relative humidity |
5% to 80% RH |
|