max5133beee Maxim Integrated Products, Inc., max5133beee Datasheet - Page 16

• Manufacturer Part Number: max5133beee
• Description: 5v/3v, 13-bit, Serial, Force/sense Dacs With 10ppm/ ? Internal Reference
• Manufacturer: Maxim Integrated Products, Inc.

+5V/+3V, 13-Bit, Serial, Force/Sense DACs
with 10ppm/°C Inter nal Reference
where NB is the numeric value of the DAC’s binary
input code, V
nal) precision reference, and G is the overall gain. The
application circuit in Figure 10 uses a low-cost op amp
(MAX4162) external to the MAX5132/MAX5133.
Together with the MAX5132/MAX5133, this circuit offers
an overall gain of 2V/V. Table 6 lists example codes for
bipolar output voltages.
The MAX5132/MAX5133 DACs feature a clear pin
(CLR), which resets the output to a certain value,
depending upon how RSTVAL is set. RSTVAL = DGND
selects an output of 0, and RSTVAL = V
midscale output when CLR is pulled low.
The CLR pin has a minimum input resistance of 40k
series with a diode to the supply voltage (V
digital voltage is higher than the supply voltage for the
part, a small input current may flow, but this current will
be limited to (V
Note: Clearing the DAC will also cause the part to exit
software shutdown (PD = 0).
Any number of MAX5132/MAX5133s may be daisy-
chained simply by connecting the serial data output pin
(DOUT) of one device to the serial data input pin (DIN)
of the following device in the chain (Figure 11).
Another configuration (Figure 12) allows several
MAX5132/MAX5133 DACs to share one common DIN
signal line. In this configuration, the data bus is com-
mon to all devices; data is not shifted through a daisy
chain. However, more I/O lines are required in this con-
figuration because each IC needs a dedicated CS line.
Figure 11. Daisy-Chaining Multiple Devices with the Digital I/Os DIN/DOUT
16
______________________________________________________________________________________
REF
CLR
is the voltage of the internal (or exter-
- V
DD
SCLK
DIN
CS
Daisy-Chaining Devices
- 0.5V) / 40k .
MAX5132
MAX5133
Clear (
Reset (RSTVAL) and
I
DOUT
CLR ) Functions
DD
DD
selects a
). If the
SCLK
DIN
CS
MAX5132
MAX5133
in
II
DOUT
Figure 9. Unipolar Output Circuit Using Internal (+1.25V/+2.5V)
or External Reference. With external reference, pull REFADJ
to V
Figure 10. Unity-Gain Bipolar Output Circuit Using Internal
(+1.25V/+2.5V) or External Reference. With external reference,
pull REFADJ to V
DD
REF
.
DAC
MAX5132
MAX5133
GAIN = 2 V/V
REF
+5V/+3V
DD
DAC
SCLK
DIN
CS
DGND
V
DD
MAX5132
MAX5133
.
MAX5132
MAX5133
III
AGND
AGND
DOUT
+5V/+3V
OUT
FB
V
DD
50k
DGND
TO OTHER
SERIAL DEVICES
FB
OUT
V+
V-
50k
MAX4162
50k
50k
V
OUT