Data Translation DT9857, User Manual, Page: 143 / 192

Specifications
143
DC Accuracy
Offset error
d
±1 mV ±1 mV
Offset error temperature coefficient ±(7.2

V/

C )/ Gain) ± 100

V/

C ±(7.2

V/

C )/ Gain) ± 100

V/

C
Gain error
Gain of 1:
Gain of 10: ±0.02%
±0.5% ±0.02%
±0.5%
Gain error temperature coefficient 50 ppm/

C 50 ppm/

C
ADC Integral Non-Linearity error, INL ±0.0006% of full-scale range ±0.0006% of full-scale range
ADC Differential Non-Linearity error, DNL Monotonic to 24 bits Monotonic to 24 bits
Dynamic Performance
e
Gain of 1 Gain of 10 Gain of 1 Gain of 10
Effective Number of Bits, ENOB
f
(1 kHz input, 105.5 kSPS)
–1 dBFS input:
–6 dBFS input: 15.5 bits
16.4 bits 15.4 bits
15.9 bits 15.9 bits
16.4 bits 15.8 bits
16.2 bits
Signal to Noise and Distortion Ratio, SINAD
g
(1 kHz input, 105.5 kSPS)
–1 dBFS input:
–6 dBFS input: 94 dB
94 dB 93 dB
91 dB 97 dB
94 dB 96 dB
93 dB
Signal to Noise Ratio, SNR
h
(1 kHz input, 105.5 kSPS)
–1 dBFS input:
–6 dBFS input: 98 dB
94 dB 96 dB
91 dB 98 dB
94 dB 97 dB
93 dB
Total Harmonic Distortion, THD
i
(1 kHz input, 105.5 kSPS)
–1 dBFS input:
–6 dBFS input: –96 dB
–104 dB –96 dB
–101 dB –104 dB
–110 dB –103 dB
–109 dB
Spurious Free Dynamic Range, SFDR
j
(1 kHz input, 105.5 kSPS)
–1 dBFS input:
–6 dBFS input: 98 dBFS
110 dBFS 98 dBFS
109 dBFS 105 dBFS
118 dBFS 105 dBFS
118 dBFS
Noise Floor
(50

input termination, 105.5 kSPS) 58

VRMS 7.5

VRMS 58

VRMS 7.5

VRMS
Overvoltage Protection
Overvoltage protection
Power on:
Power off: +40 V to –20 V
±40 V +40 V to –20 V
±40 V
ESD protection
Arc:
Contact: 8 kV
4 kV 8 kV
4 kV
a. The total frequency response is the combined frequency response of the ADC Delta Sigma filter and the analog filter.
b. Channel 0 is the reference channel with a 20 Vpp signal and a maximum sample rate of 105.469 kSamples/s.
c. Cable capacitance of 30 pF per foot (typical) must be added.
d. Offset errors are referred to the input.
Table 24: Analog Input Subsystem Specifications (cont.)
Feature DT9857 Specifications DT9857E Specifications