Chapter 4 Specifications; Analog Input - Measurement Computing USB-1208HS-2AO User Manual

Specifications
All specifications are subject to change without notice.
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.

Analog input

Parameter
A/D converter
Input ranges
Number of channels
Input configuration
Channel gain queue
Absolute maximum input
voltage
Input impedance
Input bandwidth (–3 dB)
Input leakage current
Input capacitance
Offset error drift
Gain error drift
Maximum working voltage
(signal + common mode)
Sample rate
Sample clock source
Burst mode
Throughput
Resolution
A/D no missing codes
(uncalibrated)
CMRR
Crosstalk
Table 1. Analog input specifications
Condition
Software-selectable
per channel
8 unique consecutive elements
CHx IN to GND
All input ranges
±20 V
±10 V
±5 V
Software paced
Scan to PC memory
Differential mode
Single-ended mode
60hz
SE mode, all ranges, 250 kHz
input signal
Differential mode, all ranges,
250 kHz input signal
16
Specification
Analog Devices AD7329
13-bit successive approximation type
Differential: ±20 V, ±10 V, ±5 V (The voltage level on

each individual AIN input is limited to ±14 V.)
SE: ±10 V, ±5 V, ±2.5 V, 0 V to 10 V

4 differential, 8 single-ended
Software-selectable
Multiplexed
Software-selectable range for each channel
±25 V max (power on)
±12 V max (power off)
35 MΩ min
2 MHz typ
±250 nA typ
32 pf typ
5 ppm/°C typ
25 ppm/°C typ
±14 V
±11 V
±5.5 V
1 S/s to 1 MS/s, software programmable
Internal A/D clock or AICKI
Software-selectable, burst rate = 1µs
33 S/s to 4000 S/s typ, system dependent
1 MS/s max
13 bits
13 bits
12 bits
74 dB typ
–62 dB typ
–78 dB typ
Chapter 4