12
Chapter 4
Specifications
All specifications are subject to change without notice.
Typical for the range 0 to 60 °C unless otherwise noted.
All voltages are relative to the CH
– signal on each channel unless otherwise noted.
Analog input
Table 1. Analog input specifications
Parameter
Conditions
Specification
Number of channels
4
A/D converter resolution
24-bit
A/D converter type
Delta-Sigma with analog pre-filtering
Sampling mode
Simultaneous
Sample rate range
)
Minimum: 1.613 kS/s
Maximum: 50 kS/s (Note 1)
Sample rates
)
Internal master timebase
)
Frequency: 12.8 MHz
Accuracy: ±100 ppm maximum
Input voltage ranges
CH+ to CH–
±60 V, nominal
±62.64 V, typical
±61.5 V, minimum
Overvoltage protection
±100 V
Input coupling
DC
Input impedance
CH+ to CH–
1 MΩ
Input noise
320 µV rms
Gain drift
±5 ppm/ºC
Offset drift
±150 µV/ºC
Post calibration gain match
channel-to- channel, 20
kHz
0.22 dB maximum
Crosstalk
1 kHz
–130 dB
Phase mismatch
channel-to- channel
0.045º/kHz maximum
Phase nonlinearity
= 50 kS/s
0.11º maximum
Input delay
38.4
+2.6 µs
Passband frequency
0.453 ·
Passband flatness
= 50 kS/s
±100 mdB maximum
Stopband frequency
0.547 ·
Stopband rejection
100 dB
Alias-free bandwidth
0.453 ·
–3 dB pre-filter bandwidth
= 50 kS/s
24.56 kHz
Common mode rejection ratio
(CMRR)
= 60 Hz
116 dB
Spurious free dynamic range
(SFDR)
1 kHz, –60 dBFS
–128 dBFS
Total harmonic distortion
1 kHz, –1 dBFS
–99 dB
1 kHz, –20 dBFS
–105 dB
