EVAL-AD5764EB Analog Devices Inc, EVAL-AD5764EB Datasheet - Page 6

• Manufacturer Part Number: EVAL-AD5764EB
• Description: BOARD EVAL FOR AD5764
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD5764EB

• Number Of Dac's: 4
• Number Of Bits: 16
• Outputs And Type: 4, Single Ended
• Sampling Rate (per Second): 30M
• Data Interface: Serial
• Settling Time: 8µs
• Dac Type: Voltage
• Voltage Supply Source: Dual ±
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: AD5764
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

EVAL-AD5764EB
Read/Write Registers
The Read/Write Registers section allows you to write a value
to—or read a value from—all of the AD5764 registers. The logic
values of all bits in the input register are also displayed. Access
to the registers is via two drop-down boxes. The first drop-
down box lets you select the required register, and the second
drop-down box lets you select one of the four DAC channels. In
the case of the function register, the second drop-down box is
not available. Depending on the register selected, either another
drop-down box (if coarse gain register is selected) or a text box
is displayed. For instance, to write to the data register of DAC C,
select Data Register from the first drop-down box and DAC C
from the second drop-down box. Two text boxes are now
displayed where you can type a voltage value or a 16-bit data
value (the toggle button to the right selects whether the entry is
in hex or decimal). Clicking the Enter key completes the write
operation.
Calibration
The Calibration section allows you to remove any offset or gain errors that can exist on each of the DACs. The procedure to calibrate a
DAC channel is as follows:
1.
2.
3.
4.
5.
Select the DAC to be calibrated in the Read/Write Registers section.
In the Calibration section, click the Perform Offset & Gain Calibration on Selected DAC button. The calibration section display
changes as shown in Figure 3.
In the Read/Write Registers section, load 0 V to the DAC and measure the output voltage of the DAC. Enter the measured value in
the Calibration section. Click the Done button. The offset error should now have been reduced and the Calibration section displays
changes as shown in Figure 4.
In the Read/Write Registers section, load zero scale to the DAC (−10 V, −10.2564 V or −10.5263 V). Measure the output voltage of
the DAC and enter the measured value in the Calibration section. Click the Done button. The gain error should now have been reduced.
Repeat this procedure for the other three DACs.
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Figure 3.
Figure 4.
Function Register Configuration
The Function Register Configuration section allows you to
define the configuration of the function register. Simply click
the relevant buttons to enable/disable the various functions.
Hardware Configuration
The Hardware Configuration section lets you configure the
hardware setup of the AD5764, that is, to set the configuration
of the BIN/ 2sCOMP , CLR , LDAC
addition, when the D0 and D1 ports are defined as inputs, the
user can then drive the D0 and D1 pins high or low and read
their values in the Function Register Configuration section.
Measure AD5764 Core Temperature (AD5764R)
Using the on-board ADC, the voltage at the TEMP pin can be
measured. The value of this voltage is related to the AD5764
core temperature.
, and
RSTIN
pins. In