AD5570 Analog Devices, AD5570 Datasheet - Page 18

• Manufacturer Part Number: AD5570
• Manufacturer: Analog Devices

Specifications of AD5570

• Resolution (bits): 16bit
• Dac Update Rate: 83kSPS
• Dac Settling Time: 12µs
• Max Pos Supply (v): +16.5V
• Single-supply: No
• Dac Type: Voltage Out
• Dac Input Format: SPI

AD5570
Readback
The AD5570 allows the data contained in the DAC register to
be read back, if required. As with daisy chaining, an external
pull-up resistor of ~5 kΩ on SDO is required. The data in the
DAC register is available on SDO on the falling edges of SCLK
when SYNC is low. On the 16
repeat SDIN with a delay of 16 clock cycles.
th
SCLK edge, SDO is updated to
68HC11*
MISO
*ADDITIONAL PINS OMITTED FOR CLARITY.
Figure 38. Daisy-Chaining Using the AD5570
MOSI
SCK
PC7
PC6
Rev. C | Page 18 of 24
SDIN
SCLK
SYNC
LDAC
SCLK
SYNC
LDAC
SCLK
SYNC
LDAC
To read back the contents of the DAC register without writing
to the part, take SYNC low while LDAC is held high.
Daisy-chaining readback is also possible through the SDO pin
of the last device in the DAC chain because the DAC data passes
through the DAC chain with the appropriate latency.
AD5570*
AD5570*
AD5570*
SDIN
SDIN
SDO
SDO
SDO
R
R
R
V
LOGIC