AD5425 Analog Devices, AD5425 Datasheet - Page 21

• Manufacturer Part Number: AD5425
• Description: High Bandwidth, CMOS 8-Bit Serial Interface Multiplying D/A Converter
• Manufacturer: Analog Devices

Specifications of AD5425

• Resolution (bits): 8bit
• Dac Update Rate: 2.47MSPS
• Dac Settling Time: 100ns
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Ser,SPI

MICROWIRE-to-AD5425 Interface
Figure 44 shows an interface between the DAC and any
MICROWIRE
the falling edge of the serial clock, SK, and is clocked into the
DAC input shift register on the rising edge of SK, which
corresponds to the falling edge of the DAC’s SCLK.
1
ADDITIONAL PINS OMITTED FOR CLARITY.
MICROWIRE
Figure 44. MICROWIRE-to-AD5425 Interface
™
1
-compatible device. Serial data is shifted out on
SO
SK
CS
SYNC
SCLK
SDIN
AD5425
1
Rev. A | Page 21 of 28
PIC16C6x/7x-to-AD5425
The PIC16C6x/7x synchronous serial port (SSP) is configured
as an SPI master with the clock polarity bit (CKP) = 0. This is
done by writing to the synchronous serial port control register
(SSPCON) (see the PIC16/17 microcontroller user manual). In
this example, I/O Port RA1 is being used to provide a SYNC
signal and enable the DAC serial port. This microcontroller
transfers eight bits of data during each serial transfer operation.
Figure 45 shows the connection diagram.
1
ADDITIONAL PINS OMITTED FOR CLARITY.
PIC16C6x/7x
SCK/RC3
SDI/RC4
Figure 45. PIC16C6x/7x-to-AD5425 Interface
RA1
1
SCLK
SDIN
SYNC
AD5425
AD5425
1