AD7707 Analog Devices, AD7707 Datasheet - Page 38

• Manufacturer Part Number: AD7707
• Manufacturer: Analog Devices

Specifications of AD7707

• Resolution (bits): 16bit
• # Chan: 3
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni,SE-Bip
• Ain Range: Bip (Vref)/(PGA Gain),Bip 10V,Bip 5.0V,Uni (Vref)/(PGA Gain),Uni 10V,Uni 5.0V
• Adc Architecture: Sigma-Delta
• Pkg Type: SOIC,SOP

AD7707
WRITE TO COMMUNICATIONS REGISTER SELECTING
CHANNEL AND SETTING UP NEXT OPERATION TO BE A
WRITE TO THE CLOCK REGISTER (20 HEX)
WRITE TO CLOCK REGISTER SETTING THE CLOCK
BITS IN ACCORDANCE WITH THE APPLIED MASTER
CLOCK SIGNAL AND SELECT UPDATE RATE FOR
SELECTED CHANNEL (0C HEX)
WRITE TO COMMUNICATIONS REGISTER SELECTING
CHANNEL AND SETTING UP NEXT OPERATION TO BE A
WRITE TO THE SETUP REGISTER (10 HEX)
WRITE TO COMMUNICATIONS REGISTER SETTING UP
NEXT OPERATION TO BE A READ FROM THE DATA
REGISTER (38 HEX)
CONFIGURE AND INITIALIZE MICROCONVERTER/
MICROPROCESSOR SERIAL PORT
WRITE TO SETUP REGISTER CLEARING F SYNC,
SETTING UP GAIN, OPERATING CONDITIONS AND
INITIATING A SELF-CALIBRATION ON SELECTED
CHANNEL (40 HEX)
POWER-ON/RESET FOR AD7707
READ FROM DATA REGISTER
NO
POLL DRDY PIN
START
DRDY
LOW?
YES
Figure 22. Flowchart for Setting Up and Reading from the AD7707
Rev. B | Page 38 of 52
WRITE TO COMMUNICATIONS REGISTER SETTING UP NEXT
OPERATION TO BE A READ FROM THE COMMUNICATIONS
REGISTER (08 HEX)
WRITE TO COMMUNICATIONS REGISTER SETTING UP
NEXT OPERATION TO BE A READ FROM THE DATA
REGISTER (38 HEX)
POLL DRDY BIT OF COMMUNICATIONS REGISTER
READ FROM COMMUNICATIONS REGISTER
READ FROM DATA REGISTER
NO
DRDY
LOW?
YES