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AD7694 Scheda tecnica(PDF) 3 Page - Analog Devices

Il numero della parte AD7694
Spiegazioni elettronici  16-Bit, 500 kSPS PulSAR ADC in MSOP/QFN
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

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AD7686
Rev. B | Page 3 of 28
SPECIFICATIONS
VDD = 4.5 V to 5.5 V, VIO = 2.3 V to VDD, VREF = VDD, TA = –40°C to +85°C, unless otherwise noted.
Table 2.
B Grade
C Grade
Parameter
Conditions
Min
Typ
Max
Min
Typ
Max
Unit
RESOLUTION
16
16
Bits
ANALOG INPUT
Voltage Range
IN+ − IN−
0
VREF
0
VREF
V
Absolute Input Voltage
IN+
−0.1
VDD + 0.1
−0.1
VDD + 0.1
V
IN−
−0.1
+0.1
−0.1
+0.1
V
Analog Input CMRR
fIN = 200 kHz
65
65
dB
Leakage Current @ 25°C
Acquisition phase
1
1
nA
Input Impedance
See the Analog Input
section
See the Analog Input
section
ACCURACY
No Missing Codes
16
16
Bits
Differential Linearity Error
−1
±0.7
−1
±0.5
+1.5
LSB1
Integral Linearity Error
−3
±1
+3
−2
±0.6
+2
LSB1
Transition Noise
REF = VDD = 5 V
0.5
0.45
LSB1
Gain Error2, TMIN to TMAX
±2
±8
±2
±6
LSB1
Gain Error Temperature Drift
±0.3
±0.3
ppm/°C
Offset Error2, TMIN to TMAX
±0.1
±1.6
±0.1
±1.6
mV
Offset Temperature Drift
±0.3
±0.3
ppm/°C
Power Supply Sensitivity
VDD = 5 V
± 5%
±0.05
±0.05
LSB1
THROUGHPUT
Conversion Rate
0
500
0
500
kSPS
Transient Response
Full-scale step
400
400
ns
AC ACCURACY
Signal-to-Noise Ratio
fIN = 20 kHz, VREF = 5 V
89
92
91
92.7
dB3
fIN = 20 kHz, VREF = 2.5 V
87.5
88
dB2
Spurious-Free Dynamic Range
fIN = 20 kHz
−106
−110
dB2
Total Harmonic Distortion
fIN = 20 kHz
−106
−110
dB2
Signal-to-(Noise + Distortion)
fIN = 20 kHz, VREF = 5 V
89
92
91
92.5
dB2
fIN = 20 kHz, VREF = 5 V, −60 dB input
32
33.5
dB2
Intermodulation Distortion4
−110
−115
dB2
1 LSB means least significant bit. With the 5 V input range, 1 LSB is 76.3 μV.
2 See the Terminology section. These specifications do include full temperature range variation, but do not include the error contribution from the external reference.
3 All specifications in dB are referred to a full-scale input FSR. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
4 fIN1 = 21.4 kHz, fIN2 = 18.9 kHz, each tone at −7 dB below full scale.


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