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AD7674 Datasheet(PDF) 3 Page - Analog Devices

Part No. AD7674
Description  18-Bit, 2.5 LSB INL, 800 kSPS SAR ADC
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD7674 Datasheet(HTML) 3 Page - Analog Devices

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AD7674
Rev. A | Page 3 of 28
SPECIFICATIONS
Table 2. –40°C to +85°C, VREF = 4.096 V, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise noted.
Parameter
Conditions
Min
Typ
Max
Unit
RESOLUTION
18
Bits
ANALOG INPUT
Voltage Range
VIN+ – VIN–
–VREF
+VREF
V
Operating Input Voltage
VIN+, VIN– to AGND
–0.1
AVDD
V
Analog Input CMRR
fIN = 100 kHz
65
dB
Input Current
800 kSPS throughput
100
μA
Input Impedance1
THROUGHPUT SPEED
Complete Cycle
In warp mode
1.25
μs
Throughput Rate
In warp mode
1
800
kSPS
Time between Conversions
In warp mode
1
ms
Complete Cycle
In normal mode
1.5
μs
Throughput Rate
In normal mode
0
666
kSPS
Complete Cycle
In impulse mode
1.75
μs
Throughput Rate
In impulse mode
0
570
kSPS
DC ACCURACY
Integral Linearity Error
–2.5
+2.5
LSB2
Differential Linearity Error
–1
+1.75
LSB
No Missing Codes
18
Bits
Transition Noise
VREF = 5 V
0.7
LSB
Zero Error, TMIN to TMAX
In warp mode
–25
+25
LSB
Zero Error, TMIN to TMAX
In normal or impulse mode
–85
+85
LSB
Zero Error Temperature Drift
All modes
±0.5
ppm/°C
Gain Error, TMIN to TMAX3
In warp mode
–0.034
+0.034
% of FSR
Gain Error, TMIN to TMAX3
In normal or impulse mode
–0.048
+0.048
% of FSR
Gain Error Temperature Drift
All modes
±1.6
ppm/°C
Power Supply Sensitivity
AVDD = 5 V ± 5%
±4
LSB
AC ACCURACY
Signal-to-Noise
fIN = 2 kHz, VREF = 5 V
101
dB4
VREF = 4.096 V
97.5
99
dB
fIN = 10 kHz, VREF = 4.096 V
98
dB
fIN = 100 kHz, VREF = 4.096 V
97
dB
Dynamic Range
VIN+ = VIN– = VREF/2 = 2.5 V
103
dB
Spurious-Free Dynamic Range
fIN = 2 kHz
120
dB
fIN = 10 kHz
118
dB
fIN = 100 kHz
105
dB
Total Harmonic Distortion
fIN = 2 kHz
–115
dB
fIN = 10 kHz
–113
dB
fIN = 100 kHz
–98
dB
Signal-to-(Noise + Distortion)
fIN = 2 kHz, VREF = 4.096 V
98
dB
fIN = 2 kHz, –60 dB input
40
dB
–3 dB Input Bandwidth
26
MHz
SAMPLING DYNAMICS
Aperture Delay
2
ns
Aperture Jitter
5
ps rms
Transient Response
Full-scale step
250
ns
Overvoltage Recovery
250
ns


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