| Technical specifications |
| Analog input |
| Number of channels | Up to 32 channels individually software-configurable as single-ended or differential.
Thermocouples require differential mode.
For each channel configured as differential, you essentially lose a single-ended channel. |
| Channel configurations | Temperature sensor input, software programmable to match sensor type |
| Voltage input |
| Resolution | 16 bit |
| Input voltage range | Thermocouple mode | ±0.078125 V |
| Voltage mode | ±20 V, ±10 V, ±5 V, ±2.5 V, ±1.25 V, ±0.625 V, ±0.3125 V, ±0.15625 V, ±0.078125 V, software- configurable |
| Absolute maximum input voltage | ±30 V maximum (power on)
±10 V maximum (power off) |
| Input impedance | 2 GΩ (power on)
390 Ω (power off) |
| Input leakage current | ±20 nA |
| ±1 uA maximum |
| Input capacitance | 590 pf |
| Maximum working voltage (signal + common mode) | Voltage mode: ±20V range | ±20.01 V maximum |
| Voltage mode: all other voltage input ranges | ±10.25 V maximum |
| Crosstalk | 100 dB |
| Input coupling | DC |
| Warm-up time | 15 minutes minimum |
| CJC sensor accuracy | 15 °C to 35 °C | ±0.15 °C typical |
| 0 °C to 55 °C | ±0.5 °C maximum |
| Open thermocouple detect | Automatically enabled when the channel is configured for a thermocouple sensor. |
| Digital input |
| Number of I/O | 16 channels |
| Configuration | Each DIO bit can be independently read from (DIN) or written to (DOUT).
The DIN bits can be read at any time whether the DOUT is active or tri-stated. |
| Input voltage range | 0 to +15 V |
| Input type | CMOS (Schmitt trigger) |
| Input characteristics | 47 kΩ pull-up/pull-down resistor, 28 kΩ series resistor |
| Maximum input voltage range | 0 to +20 V maximum (power on/off, relative to DGND pins 29,30,61,62) |
| Pull-up/pull-down configuration | All pins pulled up to +5 V via individual 47 kΩ resistors.
The JP1 (DIO 8- 15) shorting block default position is pull-up or "HI."
The JP2 (DIO 16- 23) shorting block default position is pull-up or "HI."
Pull down capability is available by placing either of the JP1 and JP2 shorting blocks in the "LO" position. |
| Transfer rate (software paced) | 500 port reads or single-bit reads per second, typical. |
| Input high voltage | 1.3 V minimum, 2.2 V maximum |
| Input low voltage | 1.5 V maximum, 0.6 V minimum |
| Schmitt trigger hysteresis | 0.4 V minimum, 1.2 V maximum |
| Digital output |
| Number of I/O | 16 channels |
| Configuration | Each DIO bit can be independently read from (DIN) or written to (DOUT).
The DIN bits may be read at any time whether the DOUT is active or tri-stated |
| Output characteristics | 47 kΩ pull-up, open drain (DMOS transistor) |
| Pull-up configuration | All pins pulled up to +5 V via individual 47 kΩ resistors.
The JP1 (DIO 8- 15) shorting block default position is pull-up or "HI."
The JP2 (DIO 16- 23) shorting block default position is pull-up or "HI." |
| Transfer rate (software paced) | Digital output – 500 port writes or single-bit writes per second typical. |
| Output voltage range | 0 to +5 V (no external pull up resistor, internal 47 kΩ pull-up resistors connected to +5 V by default)
0 to +15 V maximum (Note 4) |
| Drain to source breakdown voltage | +50 V minimum |
| Off state leakage current | 0.1 μA |
| Sink current capability | 150 mA maximum (continuous) per output pin
150 mA maximum (continuous) for all eight channels |
| DMOS transistor on-resistance (drain to source) | 4 Ω |
