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AD7980 датащи(PDF) 4 Page - Analog Devices

номер детали AD7980
подробное описание детали  Dual Differential 16-Bit, 1 MSPS PulSAR ADC 12.0 mW in QSOP
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
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Data Sheet
AD7903
Rev. A | Page 3 of 28
SPECIFICATIONS
VDD = 2.5 V, VIO = 2.3 V to 5.5 V, VREF = 5 V, TA = −40°C to +125°C, unless otherwise noted.1
Table 2.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
RESOLUTION
16
Bits
ANALOG INPUT
Voltage Range
INx+ − INx−
−VREF
+VREF
V
Absolute Input Voltage
INx+, INx−
−0.1
VREF + 0.1
V
Common-Mode Input Range
INx+, INx−
VREF × 0.475
VREF × 0.5
VREF × 0.525
V
Analog Input CMRR
fIN = 450 kHz
67
dB
Leakage Current at 25°C
Acquisition phase
200
nA
Input Impedance
See the Analog Inputs section
ACCURACY
No Missing Codes
16
Bits
Differential Nonlinearity Error
VREF = 5 V
−1.0
±0.4
+1.0
LSB2
VREF = 2.5 V
±0.7
LSB2
Integral Nonlinearity Error
VREF = 5 V
−2.0
±0.5
+2.0
LSB2
VREF = 2.5 V
±0.4
LSB2
Transition Noise
VREF = 5 V
0.75
LSB2
VREF = 2.5 V
1.2
LSB2
Gain Error3
TMIN to TMAX
−0.04
±0.006
+0.04
% FS
Gain Error Temperature Drift
0.19
ppm/°C
Gain Error Match3
TMIN to TMAX
0.0
0.025
% FS
Offset Error3
TMIN to TMAX
−0.5
±0.015
+0.5
mV
Offset Temperature Drift
0.3
ppm/°C
Offset Error Match3
TMIN to TMAX
0.05
1.0
mV
Power Supply Sensitivity
VDD = 2.5 V ± 5%
±0.1
LSB2
THROUGHPUT
Conversion Rate
VIO ≥ 2.3 V up to 85°C, VIO ≥ 3.3 V
above 85°C, up to 125°C
0
1
MSPS
Transient Response
Full-scale step
290
ns
AC ACCURACY
Dynamic Range
VREF = 5 V
95.5
dB4
VREF = 2.5 V
92.5
dB4
Oversampled Dynamic Range
fOUT = 10 kSPS
113.5
dB4
Signal-to-Noise Ratio (SNR)
fIN = 1 kHz, VREF = 5 V
92
94
dB4
fIN = 1 kHz, VREF = 2.5 V
89
91
dB4
Spurious-Free Dynamic Range (SFDR)
fIN = 1 kHz
−115
dB4
Total Harmonic Distortion (THD)
fIN = 1 kHz
−112
dB4
Signal-to-(Noise + Distortion) (SINAD)
fIN = 1 kHz, VREF = 5 V
91.5
93.5
dB4
fIN = 1 kHz, VREF = 2.5 V
88.5
90.5
dB4
Channel-to-Channel Isolation
fIN = 10 kHz
−120
dB4
1
In this data sheet, the voltages for the VDDx, VIOx, and REFx pins are indicated by VDD, VIO, and VREF, respectively.
2
With the 5 V input range, 1 LSB = 152.6 µV. With the 2.5 V input range, 1 LSB = 76.3 µV.
3
See the Terminology section. These specifications include full temperature range variation, but they do not include the error contribution from the external reference.
4
All specifications in decibels (dB) are referred to a full-scale input FSR. Although these parameters are referred to full scale, they are tested with an input signal at 0.5 dB below
full scale, unless otherwise specified.


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