Rainbow Electronics MAX5444 - Manual (Page 6)

MAX5441–MAX5444
+3V/+5V, Serial-Input,
Voltage-Output, 16-Bit DACs
6 _______________________________________________________________________________________
Pin Description
;; ;; ;;;;;;;;; ;; ;;
t CSHO
t
CH
t
CSSO
t
CL
t DH
t DS
t CSH1
t CSS1
t LDACS
CS
SCLK
DIN D15 D14 D0
Figure 1. Timing Diagram
PIN
MAX5441
MAX5443 MAX5442
MAX5444 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 (MAX5441/MAX5443)
or code 32768 (MAX5442/MAX5444).
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 MAX5443/MAX5444 and +5V for MAX5441/MAX5442.
8 10 GND Ground