AD7194 Analog Devices, AD7194 Datasheet - Page 5

• Manufacturer Part Number: AD7194
• Description: 8-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
• Manufacturer: Analog Devices

Specifications of AD7194

• Resolution (bits): 24bit
• # Chan: 8
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref/PGA Gain) p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: CSP

Parameter
REFERENCE INPUT
TEMPERATURE SENSOR
BURNOUT CURRENTS
DIGITAL OUTPUTS (P0 to P3)
INTERNAL/EXTERNAL CLOCK
LOGIC INPUTS
LOGIC OUTPUT (DOUT/ RDY )
REFIN Voltage
Absolute REFIN Voltage
Average Reference Input
Average Reference Input
Normal Mode Rejection
Common-Mode
Reference Detect Levels
Accuracy
Sensitivity
AIN Current
Output High Voltage, V
Output Low Voltage, V
Floating-State Leakage
Floating-State Output
Internal Clock
External Clock/Crystal
Input High Voltage, V
Input Low Voltage, V
Hysteresis
Input Currents
Output High Voltage, V
Output Low Voltage, V
Floating-State Leakage
Floating-State Output
Data Output Coding
Limits
Current
Current Drift
Rejection
Current
Capacitance
Frequency
Duty Cycle
Frequency
Input Low Voltage, V
Input High Voltage, V
Input Current
Current
Capacitance
2
2
2
INL
INH
OL
OH
INL
OL
INH
2
2
OH
2
2
2
0.3
4.72
2.4576
−10
−10
Min
1
AGND − 0.05
AV
4
−100
2.5
3.5
2
0.1
DV
4
−10
DD
DD
− 0.6
− 0.6
Typ
4.5
±0.03
±1.3
Same as for
analog inputs
100
±2
2815
500
10
50:50
4.9152
10
Offset binary
Rev. 0 | Page 5 of 56
Max
AV
AV
0.6
0.4
0.4
+100
5.12
5.12
0.8
0.4
+10
0.8
0.25
+10
0.4
0.4
+10
DD
DD
+ 0.05
Unit
V
V
μA/V
nA/V/°C
nA/V/°C
dB
V
°C
Codes/°C
nA
V
V
V
V
nA
pF
MHz
%
MHz
V
V
V
V
μA
V
V
V
μA
V
V
V
V
μA
pF
Test Conditions/Comments
REFIN = REFINx(+) − REFINx(−), the
differential input must be limited to
±(AV
External clock
Internal clock
Applies after user calibration at 25°C
Bipolar mode
Analog inputs must be buffered and chop
disabled
AV
AV
AV
AV
DV
DV
DV
DV
DV
DV
DV
DV
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
= 3 V, I
= 3 V, I
= 5 V, I
= 3 V, I
= 5 V, I
= 5 V
= 3 V
= 3 V
= 5 V
= 5 V, I
= 3 V, I
= 5 V, I
− 1.25 V)/gain when gain > 1
SOURCE
SOURCE
SOURCE
SINK
SINK
SOURCE
SINK
SINK
= 100 μA
= 800 μA
= 100 μA
= 1.6 mA
= 100 μA
= 100 μA
= 200 μA
= 200 μA
AD7194
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