MAX542 Просмотр технического описания (PDF) - Maxim Integrated
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MAX542 Datasheet PDF : 12 Pages
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+5V, Serial-Input, Voltage-Output, 16-Bit DACs
________________________________________________Pin Descriptions (continued)
MAX542
PIN
NAME
FUNCTION
1
RFB
Feedback Resistor. Connect to external op amp’s output in bipolar mode.
2
OUT
DAC Output Voltage
3
AGNDF
Analog Ground (force)
4
AGNDS
Analog Ground (sense)
5
REFS
Voltage Reference Input (sense). Connect REFS to external +2.5V reference.
6
REFF
Voltage Reference Input (force). Connect REFF to external +2.5V reference.
7
CS
Chip-Select Input
8
SCLK
Serial Clock Input. Duty cycle must be between 40% and 60%.
9
N.C.
No Connection. Not internally connected.
10
DIN
Serial Data Input
11
LDAC
LDAC Input. A falling edge updates the internal DAC latch.
12
DGND
Digital Ground
13
INV
Junction of internal scaling resistors. Connect to external op amp’s inverting input in
bipolar mode.
14
VDD
+5V Supply Voltage
tCSH1
tLDACS
CS
;;;;;;;;; SCLK
tCSHO
DIN
tCSSO
tCH
tDH
tDS
D15
tCL
D14
tCSS1
D0
LDAC*
*MAX542 ONLY
tLDAC
Figure 1. Timing Diagram
6 _______________________________________________________________________________________
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