AD5755-1x AD [Analog Devices], AD5755-1x Datasheet - Page 18

• Manufacturer Part Number: AD5755-1x
• Description: Quad Channel, 16-Bit, Serial Input, 4-20mA & Voltage Output DAC, Dynamic Power Control, HART Connectivity
• Manufacturer: AD [Analog Devices]

AD5755-1
REGISTERS
Table 8 below shows an overview of the Registers for the AD5755-1.
Table 8. Data and Control Registers for AD5755-1
DATA REGISTERS
DAC Data Register (X4)
Gain Register (X4)
Offset Register (X4)
Clear Code Register (X4)
CONTROL REGISTERS
Main Control Register
Software Register
Slew Rate Control Register (X4)
DAC Control Register (X4)
DC-DC Control Register
READBACK
Status Register
Description
Used to write a DAC code to each DAC channel. AD5755-1 Data bits (D15 to D0),
There are four DAC Data Registers, one per DAC Channel.
Used to program gain trim on per channel basis. AD5755-1 Data bits (D15 to D0),
There are four Gain Registers, one per DAC channel.
Used to program offset tro, on per channel basis. AD5755-1 Data bits (D15 to D0),
There are four Offset Registers, one per DAC channel.
Used to program Clear Code on per channel basis. AD5755-1 Data bits (D15 to D0),
There are four Clear Code Registers, one per DAC channel.
Used to Configure the part for main operation. Sets functions such as status
readback during write, enable output on all channels simultaneously, power on all
DC-DC blocks simultaneously, enables and sets conditions of watchdog timer. See
Features Section for more details.
Has two functions. Used to perform a reset. Is also used as part of the watchdog
timer feature to verify correct data communication operation.
Use to program the slew rate of the output.
There are four Slew Rate Control Registers, one per channel.
These registers are used to control the following…
There are four DAC Control Registers, one per DAC channel.
Use to set the DC-DC Control parameters. Can control DC-DC max voltage, phase
and frequency.
1)
2)
3)
4)
5)
6)
Set the output range, e.g. 4-20ma, 0-10v etc..
Set whether Internal/External sense Resistor used
Enable/Disable channel for CLEAR..
Enable/Disable Over-range.
Enable/Disable output on a per channel basis..
Power on DC-DC on a per channel basis.
Rev. PrD | Page 18 of 34
Preliminary Technical Data