Specifications; Analog Input - Measurement Computing miniLAB 1008 User Manual

Specifications

Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.

Analog Input

Parameter
A/D converter type
Input voltage range for linear operation,
single-ended mode
Input voltage range for linear operation,
differential mode
Absolute maximum input voltage
Input current (Note 1)
Number of channels
Input ranges, single-ended mode
Input ranges, differential mode
Throughput
Channel gain queue
Resolution (Note 2)
CAL accuracy
Integral linearity error
Differential linearity error
Repeatability
CAL current
Trigger source
Input current is a function of applied voltage on the analog input channels. For a given input voltage,
Note 1:
Vin, the input leakage is approximately equal to (8.181*Vin-12) µA.
The AD7870 converter only returns 11-bits (0-2047 codes) in single-ended mode.
Note 2:
Conditions
CHx to GND
CHx to GND
CHx to GND
Vin = +10 V
Vin = 0 V
Vin = -10 V
Software paced
Continuous scan
Burst scan to 4K sample
FIFO
Up to 8 elements
Differential
Single-ended
CAL = 2.5 V
Source
Sink
Software selectable
4-1
Chapter 4
Specification
Successive approximation type
±10 V max
-10 V min, +20V max
±40 V max
70 µA typ
-12 µA typ
-94 µA typ
8 single-ended / 4 differential,
software selectable
±10 V, G=2
±20 V, G=1
±10 V, G=2
±5 V, G=4
±4 V, G=5
±2.5 V, G=8
±2.0 V, G=10
±1.25 V, G=16
±1.0 V, G=20
Software selectable
50 S/s
1.2 kS/s
8 kS/s
Software configurable channel, range,
and gain.
12 bits, no missing codes
11 bits
±0.05% typ, ±0.25% max
±1 LSB typ
±0.5 LSB typ
±1 LSB typ
5 mA max
20 µA min, 200 nA typ
External digital: DIO0-DIO3