MAX5302CUA+ Maxim Integrated Products, MAX5302CUA+ Datasheet - Page 7

• Manufacturer Part Number: MAX5302CUA+
• Description: IC DAC 12BIT LP SERIAL 8-UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX5302CUA+

• Settling Time: 14µs
• Number Of Bits: 12
• 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: 1
• Resolution: 12 bit
• Interface Type: Serial (SPI)
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Supply Current: 400 uA
• Voltage Reference: External
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power Dissipation (max): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 2. Connections for MICROWIRE
Figure 3. Connections for SPI/QSPI
Table 1. Serial-Interface Programming Commands
X = Don’t care
C2
X
X
X
1
0
MAX5302
MAX5302
C1
0
0
1
1
1
16-BIT SERIAL WORD
SCLK
SCLK
C0
DIN
_______________________________________________________________________________________
DIN
0
1
0
1
1
CS
CS
Low-Power, 12-Bit Voltage-Output DAC
D11...............D0
MSB
XXXXXXXXXXXX
XXXXXXXXXXXX
XXXXXXXXXXXX
12 bits of data
12 bits of data
CPOL = 0, CPHA = 0
SK
SO
I/O
MOSI
SCK
I/O
LSB
MICROWIRE
SPI/QSPI
PORT
PORT
S0
S0
+5V
0
0
X
X
X
SS
Load input register; DAC register immediately updated (also exit shutdown).
Load input register; DAC register unchanged.
Update DAC register from input register (also exit shutdown; recall previ-
ous state).
Shutdown
No operation (NOP)
by updating the DAC with new data. When powering up
the device or bringing it out of shutdown, allow 20µs for
the output to stabilize.
The MAX5302’s 3-wire serial interface is compatible
with both MICROWIRE (Figure 2) and SPI/QSPI (Figure 3).
The serial-input word consists of 3 control bits followed
by 12+1 data bits (MSB first), as shown in Figure 4. The
3-bit control code determines the MAX5302’s response
outlined in Table 1.
The MAX5302’s digital inputs are double buffered.
Depending on the command issued through the serial
interface, the input register can be loaded without
affecting the DAC register, the DAC register can be
loaded directly, or the DAC register can be updated
from the input register (Table 1).
The MAX5302 requires 16 bits of serial data. Table 1 lists
the serial-interface programming commands. For certain
commands, the 12+1 data bits are “don’t cares.” Data is
sent MSB first and can be sent in two 8-bit packets or
one 16-bit word (CS must remain low until 16 bits are
transferred). The serial data is composed of 3 control
Figure 4. Serial-Data Format
MSB ..................................................................................LSB
C2
with Serial Interface
3 Control
Control
Bits
Bits
C1
C0
Serial-Interface Configurations
FUNCTION
16 Bits of Serial Data
Serial-Interface Description
MSB ................................LSB Sub-Bit
D11 .....................................D0, S0
12+1 Data Bits
Data Bits
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