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AD7682 Datasheet(PDF) 4 Page - Analog Devices

Part # AD7682
Description  16-Bit, 4-Channel/8-Channel, 250 kSPS PulSAR ADCs
PDF  35 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7682 Datasheet(HTML) 4 Page - Analog Devices

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AD7682/AD7689
Data Sheet
Rev. H | Page 4 of 35
SPECIFICATIONS
VDD = 2.3 V to 5.5 V, VIO = 1.8 V to VDD, VREF = VDD, all specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
Test Conditions/
Comments
AD7689A
AD7682B/AD7689B
Unit
Min
Typ
Max
Min
Typ
Max
RESOLUTION
16
16
Bits
ANALOG INPUT
Voltage Range
Unipolar mode
0
+VREF
0
+VREF
V
Bipolar mode
−VREF/2
+VREF/2
−VREF/2
+VREF/2
Absolute Input Voltage
Positive input, unipolar
and bipolar modes
−0.1
VREF + 0.1
−0.1
VREF + 0.1
V
Negative or COM input,
unipolar mode
−0.1
+0.1
−0.1
+0.1
V
Negative or COM input,
bipolar mode
VREF/2 − 0.1
VREF/2
VREF/2 + 0.1
VREF/2 − 0.1
VREF/2
VREF/2 + 0.1
V
Analog Input CMRR
fIN = 250 kHz
68
68
dB
Leakage Current at 25°C
Acquisition phase
1
1
nA
Input Impedance1
THROUGHPUT
Conversion Rate
Full Bandwidth2
VDD = 4.5 V to 5.5 V
0
250
0
250
kSPS
VDD = 2.3 V to 4.5 V
0
200
0
200
kSPS
¼ Bandwidth2
VDD = 4.5 V to 5.5 V
0
62.5
0
62.5
kSPS
VDD = 2.3 V to 4.5 V
0
50
0
50
kSPS
Transient Response
Full-scale step, full
bandwidth
1.8
1.8
μs
Full-scale step,
¼ bandwidth
14.5
14.5
μs
ACCURACY
No Missing Codes
15
16
Bits
Integral Linearity Error
−4
+4
−1.5
±0.4
+1.5
LSB3
Differential Linearity Error
−1
±0.25
+1.5
LSB
Transition Noise
REF = VDD = 5 V
0.6
0.5
LSB
Gain Error4
−32
+32
−8
±1
+8
LSB
Gain Error Match
±2
−4
±0.5
+4
LSB
Gain Error Temperature
Drift
±1
±1
ppm/°C
Offset Error4
VDD = 4.5 V to 5.5 V
−32
+32
−8
±1
+8
LSB
VDD = 2.3 V to 4.5 V
±32
±5
LSB
Offset Error Match
±2
−4
±0.5
+4
LSB
Offset Error Temperature
Drift
±1
±1
ppm/°C
Power Supply Sensitivity
VDD = 5 V ± 5%
±1.5
±1.5
LSB
AC ACCURACY5
Dynamic Range
90.5
93.8
dB6
Signal-to-Noise
LFCSP
fIN = 20 kHz, VREF = 5 V
90
92.5
93.5
dB
fIN = 20 kHz, VREF = 4.096 V,
internal REF
89
91
92.3
dB
fIN = 20 kHz, VREF = 2.5 V,
internal REF
86
87.5
88.8
dB



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