AD5372 Analog Devices, AD5372 Datasheet - Page 23

• Manufacturer Part Number: AD5372
• Description: 32-Channel, 16-Bit, Serial Input, Voltage-Output DAC
• Manufacturer: Analog Devices

Specifications of AD5372

• Resolution (bits): 16bit
• Dac Update Rate: 540kSPS
• Dac Settling Time: 20µs
• Max Pos Supply (v): +16.5V
• Single-supply: No
• Dac Type: Voltage Out
• Dac Input Format: Ser,SPI

SPECIAL FUNCTION MODE
If the mode bits are 00, then the special function mode is selected, as shown in Table 15. Bit I21 to Bit I16 of the serial data-word select the
special function, and the remaining bits are data required for execution of the special function, for example, the channel address for data
readback. The codes for the special functions are shown in Table 16. Table 17 shows the addresses for data readback.
Table 15. Special Function Mode
I23
0
Table 16. Special Function Codes
S5
0
0
0
0
0
0
0
0
0
0
0
0
Table 17. Address Codes for Data Readback
F15
0
0
0
0
1
1
1
1
1
1
1
1
1
1
Bit F6 to Bit F0 are don’t cares for the data readback function.
Special Function Code
S4
0
0
0
0
0
0
0
0
0
0
0
0
I22
0
F14
0
0
1
1
0
0
0
0
0
0
0
0
0
S3
0
0
0
0
0
0
0
0
1
1
1
1
I21
S5
F13
0
1
0
1
0
0
0
0
0
0
0
0
0
S2
0
0
0
0
1
1
1
1
0
0
0
0
I20
S4
S1
0
0
1
1
0
0
1
1
0
0
1
1
F12
0
0
0
0
0
0
0
0
0
I19
S3
S0
0
1
0
1
0
1
0
1
0
1
0
1
I18
S2
Data (F15 to F0)
0000 0000 0000 0000
XXXX XXXX XXXX X[F2:F0]
XX[F13:F0]
XX[F13:F0]
Reserved
See Table 17
XXXX XXXX [F7:F0]
XXXX XXXX [F7:F0]
XXXX XXXX [F7:F0]
XXXX XXXX [F7:F0]
Reserved
XXXX XXXX [F7:F0]
I17
S1
F11
0
0
0
0
0
0
0
0
0
I16
S0
Bit F12 to Bit F7 select the channel to be read back,
from Channel 0 = 001000 to Channel 31 = 100111
1
I15
F15
I14
F14
F10
0
0
0
0
0
0
1
1
1
Rev. C | Page 23 of 28
I13
F13
Action
NOP.
F4 = overtemperature indicator (read-only bit). This bit should be 0 when
writing to the control register.
F3 = reserved. This bit should be 0 when writing to the control register.
F2 = 1: Select Register X1B for input.
F2 = 0: Select Register X1A for input.
F1 = 1: Enable thermal shutdown mode.
F1 = 0: Disable thermal shutdown mode.
F0 = 1: Software power-down.
F0 = 0: Software power-up.
Write data in F13 to F0 to OFS0 register.
Write data in F13 to F0 to OFS1 register.
Select register for readback.
Write data in F7 to F0 to A/B Select Register 0.
Write data in F7 to F0 to A/B Select Register 1.
Write data in F7 to F0 to A/B Select Register 2.
Write data in F7 to F0 to A/B Select Register 3.
Block write to A/B select registers.
F7 to F0 = 0: Write all 0s (all channels use the X2A register).
F7 to F0 = 1: Write all 1s (all channels use the X2B register).
Write control register.
I12
F12
F9
0
0
0
1
1
1
0
0
0
I11
F11
I10
F10
F8
0
1
1
0
1
1
0
0
1
I9
F9
I8
F8
I7
F7
F7
1
0
1
0
0
1
0
1
0
I6
F6
I5
F5
AD5372/AD5373
Register Read
X1A register
X1B register
C register
M register
Control register
OFS0 data register
OFS1 data register
Reserved
A/B Select Register 0
A/B Select Register 1
A/B Select Register 2
A/B Select Register 3
Reserved
I4
F4
I3
F3
I2
F2
I1
F1
I0
F0