AD7194 Analog Devices, AD7194 Datasheet - Page 26

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AD7194

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

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

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AD7194
Channel Selection (Pseudo Bit = 0)
Table 22. Positive Input Selection
Positive Input Enable Bits in
the Configuration Register
CH7
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Table 24. Channel Selection (Pseudo Bit = 1)
CH7
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Channel Enable Bits in the Configuration Register
CH6
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
CH6
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
CH5
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
CH5
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
CH4
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
CH4
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Positive
Input Enabled
AIN(+)
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
AIN9
AIN10
AIN11
AIN12
AIN13
AIN14
AIN15
AIN16
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
CH3
CH2
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Status
Register Bits
CHD[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
CH1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Rev. 0 | Page 26 of 56
CH0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
AIN9
AIN10
AIN11
AIN12
AIN13
AIN14
AIN15
AIN16
Positive Input AIN(+)
Table 23. Negative Input Selection
CH3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Negative Input Enable Bits in the
Configuration Register
CH2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Channel Enabled
Negative Input AIN(−)
AINCOM
AINCOM
AINCOM
AINCOM
AINCOM
AINCOM
AINCOM
AINCOM
AINCOM
AINCOM
AINCOM
AINCOM
AINCOM
AINCOM
AINCOM
AINCOM
CH1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
CH0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Status Register
Bits CHD[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Negative
Input Enabled
AIN(−)
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
AIN9
AIN10
AIN11
AIN12
AIN13
AIN14
AIN15
AIN16

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