Pin descriptions – Rainbow Electronics MAX5144 User Manual
Page 6
MAX5141–MAX5144
+3V/+5V, Serial-Input,
Voltage-Output, 14-Bit DACs
6
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Pin Descriptions
PIN
MAX5141
MAX5143
MAX5142
MAX5144
NAME
FUNCTION
1
1
REF
Voltage Reference Input
2
2
CS
Chip-Select Input
3
3
SCLK
Serial Clock Input. Duty cycle must be between 40% and 60%.
4
4
DIN
Serial Data Input
5
5
CLR
Clear Input. Logic low asynchronously clears the DAC to code 0
(MAX5141/MAX5143) or code 8192 (MAX5142/MAX5144).
6
6
OUT
DAC Output Voltage
—
7
INV
Junction of Internal Scaling Resistors. Connect to external op amp’s inverting input in
bipolar mode.
—
8
RFB
Feedback Resistor. Connect to external op amp’s output in bipolar mode.
7
9
V
DD
Supply Voltage. Use +3V for MAX5143/MAX5144 and +5V for MAX5141/MAX5142.
8
10
GND
Ground
;;
;;
;;;;;;;;;
;;
;;
t
CSHO
t
CH
t
CSSO
t
CL
t
DH
t
DS
t
CSH1
t
CSS1
t
LDACS
CS
SCLK
DIN
D13 D12
S0
Figure 1. Timing Diagram