EVAL-AD7982SDZ View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
'EVAL-AD7982SDZ' PDF : 26 Pages View PDF
AD7982
Data Sheet
SPECIFICATIONS
VDD = 2.5 V, VIO = 1.71 V to 5.5 V, VREF = 5 V, TA = −40°C to +85°C, unless otherwise noted.
Table 2.
Parameter
RESOLUTION
ANALOG INPUT
Voltage Range
Absolute Input Voltage
Common-Mode Input Range
Analog Input Common Mode Rejection
Ratio (CMRR)
Leakage Current at 25°C
Input Impedance
ACCURACY
No Missing Codes
Differential Linearity Error (DNL)
Integral Linearity Error (INL)
Transition Noise
Gain Error, TMIN to TMAX2
Gain Error Temperature Drift
Zero Error, TMIN to TMAX2
Zero Temperature Drift
Power Supply Rejection Ratio (PSRR)
THROUGHPUT
Conversion Rate
Transient Response
AC ACCURACY
Dynamic Range
Oversampled Dynamic Range4
Signal-to-Noise Ratio (SNR)
Spurious-Free Dynamic Range (SFDR)
Total Harmonic Distortion5 (THD)
Signal-to-Noise-and-Distortion (SINAD)
Test Conditions/Comments
IN+ − IN−
IN+ and IN−
IN+ and IN−
fIN = 450 kHz
Acquisition phase
VREF = 5 V
VDD = 2.5 V ± 5%
VIO > 2.3 V
VIO ≤ 2.3 V
Full-scale step
VREF = 5 V
VREF = 2.5 V
FO = 1 kSPS
fIN = 1 kHz, VREF = 5 V
fIN = 1 kHz, VREF = 2.5 V
fIN = 10 kHz
fIN = 10 kHz
fIN = 1 kHz, VREF = 5 V
Min
Typ
Max
Unit
18
Bits
−VREF
+VREF
V
−0.1
VREF + 0.1
V
VREF × 0.475
VREF × 0.5 VREF × 0.525
V
67
dB
200
nA
See the Analog Inputs section
18
−0.85
−2
−0.023
±0.5
±1
1.05
+0.004
±1
±100
0.5
90
+1.5
+2
+0.023
+700
Bits
LSB1
LSB1
LSB1
% of FS
ppm/°C
μV
ppm/°C
dB
0
1
MSPS
0
800
kSPS
290
ns
97
99
dB3
93
dB3
129
dB3
95.5
98
dB3
92.5
dB3
−115
dB3
−120
dB3
97
dB3
1 LSB means least significant bit. With the ±5 V input range, 1 LSB is 38.15 μV.
2 See Terminology section. These specifications include full temperature range variation but not the error contribution from the external reference.
3 All specifications expressed in decibels are referred to a full-scale range (FSR ) and tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
4 Dynamic range is obtained by oversampling the ADC running at a throughput FS of 1 MSPS followed by postdigital filtering with an output word rate of FO.
5 Tested fully in production at fIN = 1 kHz.
Rev. E | Page 4 of 26
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