Datasheet

MAX5308/MAX5309
Low-Power, Low-Glitch, Octal 10-Bit Voltage-
Output DACs with Serial Interface
8 _______________________________________________________________________________________
16-BIT SERIAL WORD
CONTROL BITS DATA BITS
MSB LSB
C3 C2 C1 C0 D09 D08 D07 D06 D05 D04 D03 D02 D01 D00 DESC. FUNCTION
0000XXXXXXXXXX00NOPNo Operation
0001XXXXXXXXXX00RESET
RESET All Internal Registers.
Power-down DACs, outputs
pulled down with 100kΩ.
Equivalent to software CLR.
0010 00
DAC
1
D9–D0 to Input Register 1, DAC
Output Unchanged
0011 00
DAC
2
D9–D0 to Input Register 2,
DAC Output Unchanged
0100 00
DAC
3
D9–D0 to Input Register 3,
DAC Output Unchanged
0101 00
DAC
4
D9–D0 to Input Register 4,
DAC Output Unchanged
0110 00
DAC
5
D9–D0 to Input Register 5,
DAC Output Unchanged
0111 00
DAC
6
D9–D0 to Input Register 6,
DAC Output Unchanged
1000 00
DAC
7
D9–D0 to Input Register 7,
DAC Output Unchanged
1001 00
DAC
8
D9–D0 to Input Register 8,
DAC Output Unchanged
1010 00
DAC
1–4
D9–D0 to Input Registers
1–4 and DAC Registers 1–4,
DAC Outputs Updated
(Write-Thru).
1011 00
DAC
5–8
D9–D0 to Input Registers
and DAC Registers, DAC
Outputs Updated (Write-Thru).
1100 00
DAC
1–8
D9–D0 to Input Registers
and DAC Registers, DAC
Outputs Updated (Write-Thru).
1101 00
DAC
1–8
D9–D0 to Input Registers,
DAC Outputs Unchanged
1110
DAC
8
DAC
7
DAC
6
DAC
5
DAC
4
DAC
3
DAC
2
DAC
1
XX00
DAC
1–8
Input Registers to DAC Registers
Indicated by Ones, DAC Outputs
Updated, Equivalent to Software
LDAC. (No effect on DACs
indicated by 0s.)
Table 1. Serial Interface Configuration
X = Don’t Care