MAX542 MAXIM [Maxim Integrated Products], MAX542 Datasheet - Page 7

• Manufacturer Part Number: MAX542
• Description: +5V, Serial-Input, Voltage-Output, 16-Bit DACs
• Manufacturer: MAXIM [Maxim Integrated Products]

The MAX541/MAX542 voltage-output, 16-bit digital-to-
analog converters (DACs) offer full 16-bit performance
with less than 1LSB integral linearity error and less than
1LSB differential linearity error, thus ensuring monoton-
ic performance. Serial data transfer minimizes the num-
ber of package pins required.
The MAX541/MAX542 are composed of two matched
DAC sections, with a 12-bit inverted R-2R DAC forming
the 12 LSBs and the 4 MSBs derived from 15 identically
matched resistors. This architecture allows the lowest
glitch energy to be transferred to the DAC output on
Figure 2a. Typical Operating Circuit—Unipolar Output
Figure 2b. Typical Operating Circuit—Bipolar Output
( ) ARE FOR MAX542 ONLY
+5V, Serial-Input, Voltage-Output, 16-Bit DACs
MC68XXXX
MC68XXXX
(GND)
(GND)
_______________________________________________________________________________________
PCS0
MOSI
SCLK
PCS0
MOSI
SCLK
IC1
Detailed Description
0.1µF
CS
DIN
SCLK
(
LDAC
CS
DIN
SCLK
LDAC
DGND
)
+5V
V
DD
0.1µF
DGND
+2.5V
+5V
V
DD
REFF
0.1µF
10µF
MAX541/MAX542
AGNDF
REF (REFF)
+2.5V
REFS
MAX542
0.1µF
AGND_
10µF
R
INV
(REFS)
major-carry transitions. It also lowers the DAC output
impedance by a factor of eight compared to a standard
R-2R ladder, allowing unbuffered operation in medium-
load applications.
The MAX542 provides matched bipolar offset resistors,
which connect to an external op amp for bipolar output
swings (Figure 2b). For optimum performance, the
MAX542 also provides a set of Kelvin connections to
the voltage-reference and analog-ground inputs.
AGNDS
R
FB
RFB
INV
OUT
OUT
MAX495
MAX400
EXTERNAL OP AMP
+5V
-5V
EXTERNAL OP AMP
UNIPOLAR
OUT
BIPOLAR
OUT
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