Datasheet

AD5724/AD5734/AD5754
Rev. D | Page 25 of 32
OUTPUT RANGE SELECT REGISTER
The output range select register is addressed by setting the three REG bits to 001. The DAC address bits select the DAC channel and the
range bits (R2, R1, R0) select the required output range (see Table 21 and Table 22).
Table 21. Programming the Required Output Range
MSB LSB
R/
W
Zero REG2 REG1 REG0 A2 A1 A0 DB15 to DB3 DB2 DB1 DB0
0 0 0 0 1 DAC address Don’t care R2 R1 R0
Table 22. Output Range Options
R2 R1 R0 Output Range (V)
0 0 0 +5
0 0 1 +10
0 1 0 +10.8
0 1 1 ±5
1 0 0 ±10
1 0 1 ±10.8
CONTROL REGISTER
The control register is addressed by setting the three REG bits to 011. The value written to the address and data bits determines the
control function selected. The control register options are shown in Table 2 3 and Table 2 4 .
Table 23. Programming the Control Register
MSB LSB
R/
W
Zero REG2 REG1 REG0 A2 A1 A0 DB15 to DB4 DB3 DB2 DB1 DB0
0 0 0 1 1 0 0 0 NOP, data = don’t care
0 0 0 1 1 0 0 1 Don’t care TSD enable Clamp enable CLR select SDO disable
0 0 0 1 1 1 0 0 Clear, data = don’t care
0 0 0 1 1 1 0 1 Load, data = don’t care
Table 24. Explanation of Control Register Options
Option Description
NOP No operation instruction used in readback operations.
Clear Addressing this function sets the DAC registers to the clear code and updates the outputs.
Load Addressing this function updates the DAC registers and, consequently, the DAC outputs.
SDO Disable Set by the user to disable the SDO output. Cleared by the user to enable the SDO output (default).
CLR Select See Table 25 for a description of the CLR select operation.
Clamp Enable
Set by the user to enable the current-limit clamp. The channel does not power down upon detection of an
overcurrent; the current is clamped at 20 mA (default).
Cleared by the user to disable the current-limit clamp. The channel powers down upon detection of an overcurrent.
TSD Enable
Set by the user to enable the thermal shutdown feature. Cleared by the user to disable the thermal shutdown
feature (default).
Table 25. CLR Select Options
Output CLR Value
CLR Select Setting Unipolar Output Range Bipolar Output Range
0 0 V 0 V
1 Midscale Negative full scale