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AD7685 Arkusz danych(PDF) 3 Page - Analog Devices

Numer części AD7685
Szczegółowy opis  16-Bit, 250 kSPS PulSAR ADC in MSOP
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Strona internetowa  http://www.analog.com
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AD7685 Arkusz danych(HTML) 3 Page - Analog Devices

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AD7694
Rev. A | Page 3 of 16
SPECIFICATIONS
VDD = 2.7 V to 5.25 V; VREF = VDD; TA = –40°C to +85°C, unless otherwise noted.
Table 2.
A Grade
B 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
Leakage Current at 25°C
Acquisition phase
1
1
nA
Input Impedance
See the Analog Input section
ACCURACY
No Missing Codes
15
16
Bits
Integral Linearity Error
−6
+6
−4
+4
LSB
Transition Noise
REF = VDD = 5 V
0.5
0.5
LSB
Gain Error1, TMIN to TMAX
±2
±30
±2
±15
LSB
Gain Error Temperature Drift
±0.3
±0.3
ppm/°C
Offset Error1, TMIN to TMAX
±0.7
±3.5
±0.7
±3.5
mV
Offset Temperature Drift
±0.3
±0.3
ppm/°C
Power Supply Sensitivity
VDD = 5 V
± 5%
±0.05
±0.05
LSB
THROUGHPUT
Conversion Rate
VDD = 4.75 V to 5.25 V
0
250
0
250
kSPS
VDD = 2.7 V to 4.75 V
0
150
0
150
kSPS
AC ACCURACY
Signal-to-Noise
fIN = 20 kHz, VREF = 5 V
90
88
92
dB2
fIN = 20 kHz, VREF = 2.5 V
86
87
dB
Spurious-Free Dynamic Range
fIN = 20 kHz
−100
−106
dB
Total Harmonic Distortion
fIN = 20 kHz
−100
−106
dB
Signal-to-(Noise + Distortion)
fIN = 20 kHz, VREF = 5 V
89
88
92
dB
fIN = 20 kHz, VREF = 2.5 V
86
87
dB
1 See the Terminology section. These specifications include full temperature range variation, but do not include the error contribution from the external reference.
2 All specifications in dB refer to a full-scale input, FS. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified.


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