AD7190BRUZ-REEL Analog Devices Inc, AD7190BRUZ-REEL Datasheet - Page 24

• Manufacturer Part Number: AD7190BRUZ-REEL
• Description: 2ch UltraLow Noise 24Bit SD ADC IC.
• Manufacturer: Analog Devices Inc

Specifications of AD7190BRUZ-REEL

• Design Resources: Precision Weigh Scale Design Using AD7190 with Internal PGA (CN0102)
• Number Of Bits: 24
• Sampling Rate (per Second): 4.8k
• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP (0.173", 4.40mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7190
Table 20. Channel Selection
Channel Enable Bits in the Configuration Register
CH7
1
DATA REGISTER
(RS2, RS1, RS0 = 0, 1, 1; Power-On/Reset = 0x000000)
The conversion result from the ADC is stored in this data
register. This is a read-only, 24-bit register. On completion of a
read operation from this register, the RDY pin/bit is set. When
the DAT_STA bit in the mode register is set to 1, the contents of
the status register are appended to each 24-bit conversion. This
is advisable when several analog input channels are enabled
because the three LSBs of the status register (CHD2 to CHD0)
identify the channel from which the conversion originated.
CH6
1
CH5
1
CH4
1
CH3
1
CH2
1
CH1
1
CH0
1
Rev. B | Page 24 of 40
Channel Enabled
Positive Input
AIN(+)
AIN1
AIN3
AIN2
AIN1
AIN2
AIN3
AIN4
Temperature sensor
ID REGISTER
RS2, RS1, RS0 = 1, 0, 0; Power-On/Reset = 0xX4
The identification number for the AD7190 is stored in the ID
register. This is a read-only register.
GPOCON REGISTER
(RS2, RS1, RS0 = 1, 0, 1; Power-On/Reset = 0x00)
The GPOCON register is an 8-bit register from which data can
be read or to which data can be written. This register is used to
enable the general-purpose digital outputs.
Table 21 outlines the bit designations for the GPOCON register.
GP0 through GP7 indicate the bit locations. GP denotes that the
bits are in the GPOCON register. GP7 denotes the first bit of
the data stream. The number in parentheses indicates the
power-on/reset default status of that bit.
AIN2
AIN4
AIN2
AINCOM
AINCOM
AINCOM
AINCOM
Negative Input
AIN(−)
Status Register
Bits CHD[2:0]
000
001
010
011
100
101
110
111
Calibration
Register Pair
0
1
None
0
0
1
2
3