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AD7767 Scheda tecnica(PDF) 4 Page - Analog Devices

Il numero della parte AD7767
Spiegazioni elettronici  24-Bit, 8.5 mW, 109 dB, 128 kSPS/64 kSPS/32 kSPS ADCs
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD7767 Scheda tecnica(HTML) 4 Page - Analog Devices

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AD7767
Rev. C | Page 3 of
24
SPECIFICATIONS
AVDD = DVDD = 2.5 V ± 5%, VDRIVE = 1.8 V to 3.6 V, VREF = 5 V, MCLK = 1 MHz, common-mode input = VREF/2, TA = −40°C to +105°C,
unless otherwise noted.
Table 2.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
OUTPUT DATA RATE (ODR)
AD7767
Decimate by 8
128
kHz
AD7767-1
Decimate by 16
64
kHz
AD7767-2
Decimate by 32
32
kHz
ANALOG INPUT1
Differential Input Voltage
VIN+ − VIN−
±VREF
V p-p
Absolute Input Voltage
VIN+
−0.1
+VREF + 0.1
V
VIN−
−0.1
+VREF + 0.1
V
Common-Mode Input Voltage
VREF/2 − 5%
VREF/2
VREF/2 + 5%
V
Input Capacitance
22
pF
DYNAMIC PERFORMANCE
AD7767
Decimate by 8, ODR = 128 kHz
Dynamic Range2
Shorted inputs
108
109.5
dB
Signal-to-Noise Ratio (SNR)2
Full-scale input amplitude, 1 kHz tone
107
108.5
dB
Spurious-Free Dynamic Range (SFDR)2
Full-scale input amplitude, 1 kHz tone
−128
−116
dB
Total Harmonic Distortion (THD)2
Full-scale input amplitude, 1 kHz tone
−118
−105
dB
Intermodulation Distortion (IMD)2
Tone A = 49.7 kHz, Tone B = 50.3 kHz
Second-Order Terms
−133
dB
Third-Order Terms
−109
dB
AD7767-1
Decimate by 16, ODR = 64 kHz
Dynamic Range2
Shorted inputs
111
112.5
dB
Signal-to-Noise Ratio (SNR)2
Full-scale input amplitude, 1 kHz tone
110
111.5
dB
Spurious-Free Dynamic Range (SFDR)2
Full-scale input amplitude, 1 kHz tone
−128
−116
dB
Total Harmonic Distortion (THD)2
Full-scale input amplitude, 1 kHz tone
−118
−105
dB
Intermodulation Distortion (IMD)2
Tone A = 24.7 kHz, Tone B = 25.3 kHz
dB
Second-Order Terms
−133
dB
Third-Order Terms
−108
dB
AD7767-2
Decimate by 32, ODR = 32 kHz
Dynamic Range2
Shorted inputs
114
115.5
dB
Signal-to-Noise Ratio (SNR)2
Full-scale input amplitude, 1 kHz tone
112
113.5
dB
Spurious-Free Dynamic Range (SFDR)2
Full-scale input amplitude, 1 kHz tone
−128
−116
dB
Total Harmonic Distortion (THD)2
Full-scale input amplitude, 1 kHz tone
−118
−105
dB
Intermodulation Distortion (IMD)2
Tone A = 11.7 kHz, Tone B = 12.3 kHz
dB
Second-Order Terms
−137
dB
Third-Order Terms
−108
dB
DC ACCURACY1
For all devices
Resolution
No missing codes
24
Bits
Differential Nonlinearity2
Guaranteed monotonic to 24 bits
Integral Nonlinearity2
18-bit linearity
±3
±7.6
ppm
Zero Error2
20
μV
Gain Error2
0.0075
0.075
% FS
Zero Error Drift2
15
nV/°C
Gain Error Drift2
0.4
ppm/°C
Common-Mode Rejection Ratio2
50 Hz tone
−110
dB


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