MAX548ACUA+ Maxim Integrated Products, MAX548ACUA+ Datasheet - Page 8

• Manufacturer Part Number: MAX548ACUA+
• Description: IC DAC DUAL V-OUT 8BIT LP 8-UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX548ACUA+

• Settling Time: 4µs
• Number Of Bits: 8
• Data Interface: Serial
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Number Of Dac Outputs: 2
• Resolution: 8 bit
• Interface Type: Serial (SPI)
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Supply Current: 0.55 mA
• Voltage Reference: External
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power Dissipation (max): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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