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AD7981 датащи(PDF) 3 Page - Analog Devices

номер детали AD7981
подробное описание детали  High Temperature, 16-Bit, 600 kSPS PulSAR ADC
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD7981 датащи(HTML) 3 Page - Analog Devices

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Data Sheet
AD7981
SPECIFICATIONS
VDD = 2.5 V, VIO = 2.3 V to 5.5 V, VREF = 5 V, TA = −55°C to +175°C, unless otherwise noted.
Table 1.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
RESOLUTION
16
Bits
ANALOG INPUT
Voltage Range
IN+ − IN−
0
VREF
V
Absolute Input Voltage
IN+
−0.1
VREF + 0.1
V
IN−
−0.1
+0.1
V
Analog Input Common-Mode Rejection Ratio (CMRR)
fIN = 100 kHz
60
dB
Leakage Current at 25°C
Acquisition phase
1
nA
Input Impedance
See the Analog Input section
ACCURACY
No Missing Codes
16
Bits
Differential Nonlinearity
VREF = 5 V
−0.9
±0.4
+0.9
LSB1
VREF = 2.5 V
±0.5
LSB1
Integral Nonlinearity
VREF = 5 V
−2.0
±0.7
+2.0
LSB1
VREF = 2.5 V
±0.6
LSB1
Transition Noise
VREF = 5 V
0.75
LSB1
VREF = 2.5 V
1.2
LSB1
Gain Error2
TMIN to TMAX
±2
LSB1
Gain Error Temperature Drift
±0.35
ppm/°C
Zero Error2
TMIN to TMAX
−1
±0.08
+1
mV
Zero Temperature Drift
0.45
ppm/°C
Power Supply Sensitivity
VDD = 2.5 V ± 5%
±0.1
LSB1
THROUGHPUT
Conversion Rate
0
600
kSPS
Transient Response
Full-scale step
290
ns
AC ACCURACY3
Dynamic Range
VREF = 5 V
92
dB
VREF = 2.5 V
87
dB
Oversampled Dynamic Range4
OSR = 256
110
dB
Signal-to-Noise Ratio (SNR)
fIN = 1 kHz, VREF = 5 V
89
91
dB
fIN = 1 kHz, VREF = 2.5 V
86
dB
Spurious-Free Dynamic Range (SFDR)
fIN = 1 kHz
104
dB
Total Harmonic Distortion (THD)
fIN = 1 kHz
−102
dB
Signal-to-Noise-and-Distortion (SINAD)
fIN = 1 kHz, VREF = 5 V
90.5
dB
fIN = 1 kHz, VREF = 2.5 V
85.5
dB
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 include full temperature range variation, but not the error contribution from the external reference.
3
All ac accuracy specifications in dB are referred to an input full-scale range (FSR). Tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
4
The oversampled dynamic range is the ratio of the peak signal power to the noise power (for a small input) measured in the ADC output FFT from dc up to fS/(2 × OSR),
where fS is the ADC sample rate and OSR is the oversampling ratio.
Rev. 0 | Page 3 of 25


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