AD7922 Analog Devices, AD7922 Datasheet - Page 19

• Manufacturer Part Number: AD7922
• Description: 2-Channel, 2.35 V to 5.25 V, 1 MSPS, 12-Bit A/D Converter
• Manufacturer: Analog Devices

Specifications of AD7922

• Resolution (bits): 12bit
• # Chan: 2
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni Vdd
• Adc Architecture: SAR
• Pkg Type: SOP,SOT

DOUT
SCLK
DOUT
SCLK
DIN
DIN
CS
CS
THE PART BEGINS
TO POWER UP
1
1
DOUT
DOUT
SCLK
SCLK
DIN
DIN
CHANNEL FOR NEXT CONVERSION
CHANNEL FOR NEXT CONVERSION
CS
CS
A
5
THE PART GOES
CONVERSION RESULT
INTO TRACK
INVALID DATA
1
10
10
2
1
12
2
13
INVALID DATA
INVALID DATA
Figure 28. Entering Power- Down Mode
Figure 27. Entering Daisy-Chain Mode
Figure 29. Exiting Power-Down Mode
Figure 26. Normal Mode Operation
14
DAISY-CHAIN MODE
INVALID DATA
INVALID DATA
THE PART ENTERS
16
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16
1
10
THREE-STATE
THREE-STATE
1
10
CHANNEL FOR NEXT CONVERSION
CHANNEL FOR NEXT CONVERSION
THE PART IS FULLY
POWERED UP WITH V
FULLY ACQUIRED
THREE-STATE
THREE-STATE
CONVERSION RESULT
CONVERSION RESULT
12
NORMAL MODE
10
16
IN
12
16
14
AD7912/AD7922
16
AD7912/AD7922
16