User`s guide

36
Chapter 5
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
Table 1. Analog input specifications
A/D converter type
Successive approximation
Resolution
16 bits
Number of channels
16 single-ended/8 differential, software-selectable
Input ranges (SW programmable)
Bipolar: ±10 V, ±5 V, ±2 V, ±1 V , ±0.5 V, ±0.2 V, ±0.1 V
Maximum sample rate
1 MHz
Nonlinearity (integral)
±2 LSB maximum
Nonlinearity (differential)
±1 LSB maximum
A/D pacing
Onboard input scan clock, external source (XAPCR)
Trigger sources and modes
Refer to Table 7
Data transfer
DMA
Configuration memory
Programmable I/O
Maximum usable input voltage
+ common mode voltage (CMV + V
in
)
Range: ±10 V, ±5 V
10.5 V maximum
Range: ±2 V, ±1 V, ±0.5 V, ±0.2 V, ±0.1 V
6.0 V maximum
Signal to noise and distortion
72 dB typical for ±10 V range, 1 kHz fundamental
Total harmonic distortion
–80 dB typical for ±10 V range, 1 kHz fundamental
Calibration
Auto-calibration, calibration factors for each range stored on the board in
non-volatile RAM.
CMRR @ 60 Hz
–70 dB typical DC to 1 kHz
Bias current
40 pA typical (0 °C to 35°C)
Input impedance
10 MΩ single-ended, 20 MΩ differential
Absolute maximum input voltage
±30 V
Accuracy
Table 2. Analog input accuracy specifications
Voltage range
Accuracy
±(% of reading + %
range)
23 °C ±10 °C, 1 year
Temperature coefficient
±(ppm of reading + ppm range)/°C
Noise (cts
RMS)
–10 V to 10 V
Note 1
0.031% + 0.008%
14 + 8
1.5
Note 2
–5 V to 5 V
0.031% + 0.009%
14 + 9
2.0
–2 V to 2 V
0.031% + 0.010%
14 +10
1.6
–1 V to 1 V
0.031% + 0.02%
14 + 12
2.5
–500 mV to 500 mV
0.031% + 0.04%
14 +18
4.0
–200 mV to 200 mV
0.036% + 0.075%
14 +12
5.0
–100 mV to 100 mV
0.042% + 0.15%
14 +18
9.0
Note 1: Specifications assume differential input single-channel scan, 1 MHz scan rate, unfiltered,
CMV=0.0 V, 30 minute warm-up, exclusive of noise.