MAX545 MAXIM [Maxim Integrated Products], MAX545 Datasheet - Page 6

• Manufacturer Part Number: MAX545
• Description: +5V, Serial-Input, Voltage-Output, 14-Bit DACs
• Manufacturer: MAXIM [Maxim Integrated Products]

+5V, Serial-Input, Voltage-Output, 14-Bit DACs
MAX545
Figure 1. Timing Diagram
6
LDAC*
SCLK
DIN
CS
_______________________________________________________________________________________
*MAX545 ONLY
PIN
10
11
12
13
14
1
2
3
4
5
6
7
8
9
t
CSHO
t
CSSO
AGNDF
AGNDS
NAME
DGND
t
LDAC
SCLK
REFS
REFF
DS
OUT
N.C.
RFB
V
DIN
INV
D13
CS
DD
t
DH
t
CH
Feedback Resistor. Connect to external op amp’s output in bipolar mode.
DAC Output Voltage
Analog Ground (force)
Analog Ground (sense)
Voltage Reference Input (sense). Connect REFS to external +2.5V reference.
Voltage Reference Input (force). Connect REFF to external +2.5V reference.
Chip-Select Input
Serial-Clock Input. Duty cycle must be between 40% and 60%.
No Connection. Not internally connected.
Serial-Data Input
LDAC Input. A falling edge updates the internal DAC latch.
Digital Ground
Junction of internal scaling resistors. Connect to external op amp’s inverting input in
bipolar mode.
+5V Supply Voltage
t
CL
D12
Pin Descriptions (continued)
FUNCTION
S0
t
CSH1
t
CSS1
t
LDACS
t
LDAC