MAX541 データシートの表示（PDF） - Maxim Integrated
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MAX541 Datasheet PDF : 12 Pages
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+5V, Serial-Input, Voltage-Output, 16-Bit DACs
MC68XXXX
+5V
0.1µF
VDD
+2.5V
10µF
0.1µF
REF (REFF) (REFS)
PCS0
CS
MOSI
DIN
MAX541/MAX542
OUT
SCLK
(GND)
SCLK
(LDAC)
DGND
AGND_
( ) ARE FOR MAX542 ONLY
Figure 2a. Typical Operating Circuit—Unipolar Output
MC68XXXX
PCS0
MOSI
SCLK
IC1
(GND)
+2.5V
10µF
+5V
0.1µF
0.1µF
VDD
CS
DIN
SCLK
LDAC
DGND
REFF
REFS
RINV
MAX542
AGNDF
RFB
RFB
INV
OUT
AGNDS
MAX495
UNIPOLAR
OUT
EXTERNAL OP AMP
+5V
BIPOLAR
MAX400
OUT
EXTERNAL OP AMP
-5V
Figure 2b. Typical Operating Circuit—Bipolar Output
Detailed Description
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
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.
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