EVAL-AD7708EBZ Analog Devices Inc, EVAL-AD7708EBZ Datasheet - Page 11

• Manufacturer Part Number: EVAL-AD7708EBZ
• Description: BOARD EVAL FOR AD7708
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD7708EBZ

• Number Of Adc's: 1
• Number Of Bits: 16
• Sampling Rate (per Second): 1.37k
• Data Interface: Serial
• Inputs Per Adc: 8 Single or 4 Differential
• Input Range: ±2.5 V
• Power (typ) @ Conditions: 3.84mW @ 3 V
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: AD7708
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: EVAL-AD7708EB; EVAL-AD7708EB

EVAL-AD7708-EB
Fig. 9. The I/O and Current Source Control RegisterScreen
The I/O Control Register Screen
Fig.9. shows the I/O Control Register Screen. This screen allows the user to control the I/O ports P1 & P2. When
the screen is loaded, the software reads the current contents of the I/O Control Register of the AD7708 and sets
the buttons accordingly.
The two I/0 ports P1 & P2 can be selected as inputs or outputs, the user can set the outputs as required - note
a 'high' represents a 5V output on the pin, 'low' represents AGND. The user can also read in the value at the inputs
P1 & P2 if configured as inputs. Note pressing Update Display button will read the current contents of the I/
O Control Register and update the screen.
Everytime a change is made, the software writes the new conditions to the AD7708 and then reads back from
the I/O Control Register for conformation - ignoring databits P1DAT - P2DAT. Refer to AD7708 datasheets
for more information.
The Mode Register Screen
The Mode Register Screen is shown in Fig. 10. When the screen is loaded the software reads the current contents
from the Mode Register of the AD7708 and sets the buttons accordingly. This screen allows the user to change
the operating mode of the AD7708, change the channel configuration, turn chopping on/off, select the reference
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