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AD7177-2BRUZ-RL7 Arkusz danych(PDF) 4 Page - Analog Devices

Numer części AD7177-2BRUZ-RL7
Szczegółowy opis  32-Bit, 10 kSPS, Sigma-Delta ADC with 100 關s Settling and True Rail-to-Rail Buffers
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
Logo AD - Analog Devices

AD7177-2BRUZ-RL7 Arkusz danych(HTML) 4 Page - Analog Devices

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AD7177-2
Data Sheet
Rev. A | Page 4 of 59
SPECIFICATIONS
AVDD1 = 4.5 V to 5.5 V, AVDD2 = 2 V to 5.5 V, IOVDD = 2 V to 5.5 V, AVSS = DGND = 0 V, REF+ = 2.5 V, REF− = AVSS,
internal master clock (MCLK) = 16 MHz, TA = TMIN to TMAX (−40°C to +105°C), unless otherwise noted.
Table 1.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
ADC SPEED AND PERFORMANCE
Output Data Rate (ODR)
5
10,000
SPS
No Missing Codes1
32
Bits
Resolution
See Table 19 to Table 23
Noise
See Table 19 to Table 23
FIR Filter Rejection
See Table 23
ACCURACY
Integral Nonlinearity (INL)
All input buffers disabled
±1
±3.5
ppm of FSR
All input buffers enabled
±3.5
±7.8
ppm of FSR
Offset Error2
Internal short
±40
µV
Offset Drift
Internal short
±80
nV/°C
Gain Error2
All input buffers disabled
±45
±100
ppm of FSR
All input buffers enabled
±2.5
±40
ppm of FSR
Gain Drift
±0.4
±0.75
ppm/°C
REJECTION
Power Supply Rejection
AVDD1, AVDD2, VIN = 1 V
95
dB
Common-Mode Rejection
VIN = 0.1 V
At DC
95
dB
At 50 Hz, 60 Hz1
20 Hz output data rate (post filter),
50 Hz ± 1 Hz and 60 Hz ± 1 Hz
120
dB
Normal Mode Rejection1
50 Hz ± 1 Hz and 60 Hz ± 1 Hz
Internal clock, 20 SPS ODR (postfilter)
71
90
dB
External clock, 20 SPS ODR (postfilter)
85
90
dB
ANALOG INPUTS
Differential Input Range
VREF = (REF+) − (REF−)
±VREF
V
Absolute Voltage Limits1
Input Buffers Disabled
AVSS − 0.05
AVDD1 + 0.05
V
Input Buffers Enabled
AVSS
AVDD1
V
Analog Input Current
Input Buffers Disabled
Input Current
±48
µA/V
Input Current Drift
External clock
±0.75
nA/V/°C
Internal clock (±2.5% clock)
±4
nA/V/°C
Input Buffers Enabled
Input Current
±30
nA
Input Current Drift
AVDD1 − 0.2 V to AVSS + 0.2 V
±75
pA/°C
AVDD1 to AVSS
±1
nA/°C
Crosstalk
1 kHz input
−120
dB
INTERNAL REFERENCE
100 nF external capacitor to AVSS
Output Voltage
REFOUT, with respect to AVSS
2.5
V
Initial Accuracy3
REFOUT, TA = 25°C
−0.12
+0.12
% of V
Temperature Coefficient1
0°C to 105°C
±2
±5
ppm/°C
−40°C to +105°C
±3
±10
ppm/°C
Reference Load Current, ILOAD
−10
+10
mA
Power Supply Rejection
AVDD1, AVDD2 (line regulation)
90
dB
Load Regulation
∆VOUT/∆ILOAD
32
ppm/mA


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