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AD7175-8BCPZ Arkusz danych(PDF) 3 Page - Analog Devices

Numer części AD7175-8BCPZ
Szczegółowy opis  24-Bit, 8-/16-Channel, 250 kSPS, Sigma- Delta ADC with True Rail-to-Rail Buffers
Download  64 Pages
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
Logo AD - Analog Devices

AD7175-8BCPZ Arkusz danych(HTML) 3 Page - Analog Devices

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Data Sheet
AD7175-8
Rev. 0 | Page 3 of 64
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
250,000
SPS
No Missing Codes1
Excluding sinc3 filter ≥ 125 kSPS
24
Bits
Resolution
See Table 19 to Table 23
Noise
See Table 19 to Table 23
ACCURACY
Integral Nonlinearity (INL)
All input buffers enabled
±4.5
10
ppm of FSR
All input buffers disabled
±1
±4.5
ppm of FSR
Offset Error2
Internal short
±60
µV
Offset Drift
Internal short
±150
nV/°C
Gain Error2
±80
±110
ppm of FSR
Gain Drift1
±0.5
±0.75
ppm/°C
REJECTION
Power Supply Rejection
AVDD1, AVDD2, for V
IN = 1 V
90
dB
Common-Mode Rejection
V
IN = 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
V
REF = (REF+) − (REF−)
±V
REF
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
±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, T
A = 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, I
LOAD
−10
+10
mA
Power Supply Rejection
AVDD1, AVDD2 (line regulation)
95
dB
Load Regulation
∆V
OUT/∆ILOAD
32
ppm/mA
Voltage Noise
e
N, 0.1 Hz to 10 Hz, 2.5 V reference
4.5
µV rms
Voltage Noise Density
e
N, 1 kHz, 2.5 V reference
215
nV/√Hz


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