AD5370 Analog Devices, AD5370 Datasheet - Page 23

• Manufacturer Part Number: AD5370
• Description: 40-Channel, 16-Bit, Serial Input, Voltage-Output DACs
• Manufacturer: Analog Devices

Specifications of AD5370

• 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, the special function mode is selected, as shown in Table 12. 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 13. Table 14 shows the addresses for data readback.
Table 12. Special Function Mode
I23
0
Table 13. Special Function Codes
S5
0
0
0
0
0
0
0
0
0
0
0
0
0
Special Function Code
S4
0
0
0
0
0
0
0
0
0
0
0
0
1
I22
0
S3
0
0
0
0
0
0
0
0
1
1
1
1
1
I21
S5
S2
0
0
0
0
1
1
1
1
0
0
0
0
1
I20
S4
S1
0
0
1
1
0
0
1
1
0
0
1
1
0
I19
S3
S0
0
1
0
1
0
1
0
1
0
1
0
1
0
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 14
XXXX XXXX [F7:F0]
XXXX XXXX [F7:F0]
XXXX XXXX [F7:F0]
XXXX XXXX [F7:F0]
XXXX XXXX [F7:F0]
XXXX XXXX [F7:F0]
Reserved
I17
S1
I16
S0
I15
F15
I14
F14
I13
F13
Rev. 0 | Page 23 of 28
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 temperature shutdown.
F1 = 0: disable temperature shutdown.
F0 = 1: soft power-down.
F0 = 0: soft power-up.
Write data in F13:F0 to OFS0 register.
Write data in F13:F0 to OFS1 register.
Reserved.
Select register for readback.
Write data in F7:F0 to A/B Select Register 0.
Write data in F7:F0 to A/B Select Register 1.
Write data in F7:F0 to A/B Select Register 2.
Write data in F7:F0 to A/B Select Register 3.
Write data in F7:F0 to A/B Select Register 4.
Block write A/B select registers.
F7:F0 = 0, write all 0s (all channels use X2A register).
F7:F0 = 1, write all 1s (all channels use X2B register).
Write to the Control register.
I12
F12
I11
F11
I10
F10
I9
F9
I8
F8
I7
F7
I6
F6
I5
F5
I4
F4
I3
F3
I2
F2
AD5370
I1
F1
I0
F0