MAX548 Maxim, MAX548 Datasheet - Page 8

• Manufacturer Part Number: MAX548
• Description: +2.5V to +5.5V / Low-Power / Single/Dual / 8-Bit Voltage-Output DACs in MAX Package
• Manufacturer: Maxim

function. Data is clocked in starting with unassigned bit
1 (UB1), followed by the remaining control bits and the
DAC data byte. The data byte’s LSB (D0) is the last bit
clocked into the input register (Figure 2).
Table 5 is an example of a 16-bit input word that per-
forms the following functions:
+2.5V to +5.5V, Low-Power, Single/Dual,
8-Bit Voltage-Output DACs in µMAX Package
Figure 2. Serial-Interface Timing Diagram
Figure 3. Detailed Serial-Interface Timing Diagram
8
_______________________________________________________________________________________
LDAC
SCLK
DIN
CS
MAX548A/
MAX550A
LDAC
ONLY
SCLK
CS
DIN
t
CSH0
UB1 UB2 UB3 C2
1
t
CSS0
t
DS
t
C1
DH
t
CH
C0
A1
A0
t
8
CL
OPTIONAL
PAUSE
• Loads 80 hex (128 decimal) into the DAC input regis-
• Updates the DAC register(s) on CS’s rising edge.
Table 6 shows how to calculate the output voltage
based on the input code. Figure 3 gives detailed timing
information.
D7
ter (DAC A for the MAX548A/MAX549A)
9
D6
D5
D4
D3
t
CSH1
D2
D1
t
CSLD
D0
INSTRUCTION
16
EXECUTED
t
CSW
t
LDAC
t
CSS1