Pin description – Rainbow Electronics MAX5233 User Manual
Page 10

MAX5232/MAX5233
3V/5V, 10-Bit, Serial Voltage-Output Dual DACs
with Internal Reference
10
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PIN
NAME
FUNCTION
1
OSA
DAC A Offset Adjust
2
OUTA
DAC A Output
3
RSTV
Reset Value Input
1: Connect to V
DD
to select midscale as the reset value.
0: Connect to DGND to select zero as the reset value.
4
LDAC
Load DACs A and B
5
CLR
Clear Input. Both DAC outputs go to zero or midscale. Clears both DAC internal registers (input
register and DAC register) to its predetermined (RSTV) state.
6
CS
Chip-Select Input
7
DIN
Serial Data Input. Data is clocked in on the rising edge of SCLK.
8
SCLK
Serial Clock Input
9
DGND
Digital Ground
10
DOUT
Serial Data Output
11
PDL
Power-Down Lockout. Disables shutdown of both DACs when low.
12
REF
Reference Output. Reference provides a 2.465V (MAX5233) or 1.234V (MAX5232) nominal output.
13
AGND
Analog Ground
14
V
DD
Positive Power Supply. Bypass V
DD
with a 0.1µF capacitor in parallel with a 4.7µF capacitor to
AGND, and bypass V
DD
with a 0.1µF capacitor to DGND.
15
OUTB
DAC B Output
16
OSB
DAC B Offset Adjust
Pin Description
CS
SCLK
DIN
COMMAND EXECUTED
9
8
16
(1)
1
C1
C2
S0
C0
D9
D8
D7
D6
D3
D2
D1
D0
S2
(MODE 0)
(MODE 1)
DOUT
DOUT
C2
C1
C2 C1
S1
D5
D4
Figure 1. Serial Interface Timing