MAX5176BEEE Maxim Integrated, MAX5176BEEE Datasheet - Page 12

• Manufacturer Part Number: MAX5176BEEE
• Description: Digital to Analog Converters - DAC
• Manufacturer: Maxim Integrated

Specifications of MAX5176BEEE

• Number Of Converters: 1
• Number Of Dac Outputs: 1
• Resolution: 12 bit
• Interface Type: QSPI, SPI, Serial (3-Wire, Microwire)
• Settling Time: 18 us
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QSOP-16
• Minimum Operating Temperature: - 40 C
• Output Type: Voltage
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V
• Voltage Reference: External

The user-programmable logic output (UPO) allows con-
trol of an external device through the serial interface,
thereby reducing the number of microcontroller I/O pins
required. During power-down, this output will retain its
digital state prior to shutdown. When CLR is pulled low,
UPO will reset to its programmed default state. See
Table 1 for specific commands to control the UPO.
The MAX5174/MAX5176 offers a clear pin (CLR), which
resets the output voltage. If RS = DGND, then CLR
resets the output voltage to 0. If RS = V
resets the output voltage to mid-scale. In either case,
CLR will reset UPO to its programmed default state.
Figure 6 shows the MAX5174/MAX5176 configured for
unipolar, rail-to-rail operation with a gain of 1.638V/V.
Low-Power, Serial, 12-Bit DACs
with Voltage Output
Figure 5. Detailed Serial-Interface Timing Diagram
12
Figure 4. Serial-Interface Timing Diagram
User-Programmable Logic Output (UPO)
______________________________________________________________________________________
SCLK
DIN
CS
Applications Information
DOUT
SCLK
DIN
CS
Reset (RS) and Clear (
C2
1
C1
t
CSO
C0
Unipolar Output
D9
D8
t
DS
t
CSS
DD
D7
, then CLR
D6
CLR )
D5
t
D01
8
t
CH
D4
t
CSH
9
t
Table 2 lists the codes for unipolar output voltages. The
output voltage is limited to V
duce an offset voltage as shown in Figure 7 and
described in the Offset and Buffer Configurations section.
Figure 8 shows the MAX5174/MAX5176 configured for
bipolar output operation. The output voltage is given by
the following equation (OS = AGND):
where N represents the numeric value of the DAC’s
binary input code and V
nal reference. Table 3 shows digital codes and the cor-
responding output voltage for Figure 8’s circuit.
CP
D3
t
D02
t
D2
CL
D1
D0
V
OUT
t
CS1
S2
t
DH
t
CSW
S1
V
REF
S0
REF
16
DD
2
4096
is the voltage of the exter-
. Use the OS pin to intro-
COMMAND
EXECUTED
N
Bipolar Output
1