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AD7175-2BRUZ-RL Arkusz danych(PDF) 4 Page - Analog Devices

Numer części AD7175-2BRUZ-RL
Szczegółowy opis  24-Bit, 250 kSPS, Sigma-Delta ADC with 20 us Settling and True Rail-to-Rail Buffers
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
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AD7175-2BRUZ-RL Arkusz danych(HTML) 4 Page - Analog Devices

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AD7175-2
Data Sheet
Rev. A | Page 4 of 63
Product
Overview
Online
Documentation
Design
Resources
Discussion
Sample
& Buy
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,
MCLK = internal master clock = 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 6 and Table 7
Noise
See Table 6 and Table 7
ACCURACY
Integral Nonlinearity (INL)
Analog input buffers enabled
±3.5
±7.8
ppm of FSR
Analog input buffers disabled
±1
±3.5
ppm of FSR
Offset Error2
Internal short
±40
µV
Offset Drift
Internal short
±80
nV/°C
Gain Error2
±35
±85
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 Coefficient
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
Voltage Noise
eN, 0.1 Hz to 10 Hz, 2.5 V reference
4.5
µV rms


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