MAX5253AEAP Maxim Integrated Products, MAX5253AEAP Datasheet - Page 13

• Manufacturer Part Number: MAX5253AEAP
• Description: IC DAC QUAD +3V 12BIT 20-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5253AEAP

• Settling Time: 16µs
• Number Of Bits: 12
• Data Interface: Serial
• Number Of Converters: 4
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power Dissipation (max): -

For a unipolar output, the output voltages and the refer-
ence inputs have the same polarity. Figure 9 shows the
MAX5253 unipolar output circuit, which is also the typi-
cal operating circuit. Table 2 lists the unipolar output
codes.
For rail-to-rail outputs, see Figure 10. This circuit shows
the MAX5253 with the output amplifiers configured with
a closed-loop gain of +2.6 to provide 0V to 3.25V full-
scale range when a 1.25V reference is used.
Table 2. Unipolar Code Table
Table 3. Bipolar Code Table
__________Applications Information
1 1 1 1
1 0 0 0
0 1 1 1
0 0 0 0
0 0 0 0
1 1 1 1
1 0 0 0
0 1 1 1
0 0 0 0
0 0 0 0
1000
1000
MSB
MSB
DAC CONTENTS
DAC CONTENTS
1 1 1 1
0 0 0 0
1 1 1 1
0 0 0 0
0 0 0 0
1 1 1 1
0 0 0 0
1 1 1 1
0 0 0 0
0 0 0 0
0000
0000
1 1 1 1
0 0 0 0
1 1 1 1
0 0 0 1
0 0 0 0
1 1 1 1
0 0 0 0
1 1 1 1
0 0 0 1
0 0 0 0
______________________________________________________________________________________
0001
0001
LSB
LSB
+3V, Quad, 12-Bit Voltage-Output DAC
+V
-V
REF
ANALOG OUTPUT
ANALOG OUTPUT
REF
+V
+V
+V
+V
+V
+V
Unipolar Output
-V
-V
(
(
REF
REF
REF
REF
REF
REF
REF
REF
———
———
2048
4096
2048
2048
(
(
(
(
0V
(
(
0V
(
(
———
———
———
———
———
———
———
———
4095
4096
2047
4096
4096
2047
2048
2048
2047
4096
2049
2048
2048
)
)
1
1
1
= ————
= -V
+V
)
)
)
)
)
)
)
)
REF
REF
2
The MAX5253 outputs can be configured for bipolar
operation using Figure 11’s circuit.
where NB is the numeric value of the DAC’s binary
input code. Table 3 shows digital codes (offset binary)
and corresponding output voltages for Figure 11’s
circuit.
Figure 9. Unipolar Output Circuit
MAX5253
with Serial Interface
REFAB
V
OUT
REFERENCE INPUTS
= V
DAC A
DAC B
DAC C
DAC D
REF
REFCD
[(2NB / 4096) - 1]
AGND
V
DD
+3.3V
Bipolar Output
DGND
FBA
FBB
FBC
FBD
OUTA
OUTB
OUTC
OUTD
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