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AD7124-8BCPZ データシート(PDF) 9 Page - Analog Devices

部品番号 AD7124-8BCPZ
部品情報  8-Channel, Low Noise, Low Power, 24-Bit Sigma-Delta ADC with PGA and Reference
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

AD7124-8BCPZ データシート(HTML) 9 Page - Analog Devices

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AD7124-8
Data Sheet
Rev. D | Page 8 of 92
Parameter1
Min
Typ
Max
Unit
Test Conditions/Comments
EXCITATION CURRENT SOURCES (IOUT0/IOUT1)
Available on any analog input pin
Output Current
50/100/250/
500/750/1000
µA
Initial Tolerance
±4
%
TA = 25°C
Drift
50
ppm/°C
Current Matching
±0.5
%
Matching between IOUT0 and
IOUT1, VOUT = 0 V
Drift Matching2
5
30
ppm/°C
Line Regulation (AVDD)
2
%/V
AVDD = 3 V ± 5%
Load Regulation
0.2
%/V
Output Compliance2
AVSS − 0.05
AVDD − 0.37
V
50 µA/100 µA/250 µA/500 µA
current sources, 2% accuracy
AVSS − 0.05
AVDD − 0.48
V
750 µA and 1000 µA current
sources, 2% accuracy
BIAS VOLTAGE (VBIAS) GENERATOR
Available on any analog input pin
VBIAS
AVSS + (AVDD
AVSS)/2
V
VBIAS Generator Start-Up Time
6.7
µs/nF
Dependent on the capacitance
connected to AINx
TEMPERATURE SENSOR
Accuracy
±0.5
°C
Sensitivity
13,584
codes/°C
LOW-SIDE POWER SWITCH
On Resistance (RON)
7
10
Allowable Current2
30
mA
Continuous current
BURNOUT CURRENTS
AIN Current
0.5/2/4
µA
Analog inputs must be buffered
DIGITAL OUTPUTS (P1 to P4)
Output Voltage
High, VOH
AVDD − 0.6
V
ISOURCE = 100 µA
Low, VOL
0.4
V
ISINK = 100 µA
DIAGNOSTICS
Power Supply Monitor Detect Level
Analog Low Dropout Regulator (ALDO)
1.6
V
AVDD − AVSS ≥ 2.7 V
Digital LDO (DLDO)
1.55
V
IOVDD ≥ 1.75 V
Reference Detect Level
0.7
1
V
REF_DET_ERR bit active if VREF < 0.7 V
AINM/AINP Overvoltage Detect Level
AVDD + 0.04
V
AINM/AINP Undervoltage Detect Level
AVSS − 0.04
V
INTERNAL/EXTERNAL CLOCK
Internal Clock
Frequency
614.4 − 5%
614.4
614.4 + 5%
kHz
Duty Cycle
50:50
%
External Clock
Frequency
2.4576
MHz
Internal divide by 4
Duty Cycle Range
45:55 to 55:45
%
LOGIC INPUTS2
Input Voltage
Low, VINL
0.3 × IOVDD
V
1.65 V ≤ IOVDD < 1.9 V
0.35 × IOVDD
V
1.9 V ≤ IOVDD < 2.3 V
0.7
V
2.3 V ≤ IOVDD ≤ 3.6 V
High, VINH
0.7 × IOVDD
V
1.65 V ≤ IOVDD < 1.9 V
0.65 × IOVDD
V
1.9 V ≤ IOVDD < 2.3 V
1.7
V
2.3 V ≤ IOVDD < 2.7 V
2
V
2.7 V ≤ IOVDD ≤ 3.6 V
Hysteresis
0.2
0.6
V
1.65 V ≤ IOVDD ≤ 3.6 V
Input Currents
−1
+1
µA
VIN = IOVDD or GND
Input Capacitance
10
pF
All digital inputs


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