MAX5232_09 Datasheet, PDF (10/18 Pages) Maxim Integrated Products – 3V/5V, 10-Bit, Serial Voltage-Output Dual DACs with Internal Reference

3V/5V, 10-Bit, Serial Voltage-Output Dual DACs
with Internal Reference
Pin Description
PIN
NAME
1
OSA
DAC A Offset Adjust
2
OUTA
DAC A Output
FUNCTION
Reset Value Input
3
RSTV
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
CS
COMMAND EXECUTED
SCLK
DIN
DOUT
(MODE 0)
DOUT
(MODE 1)
1
8
C2 C1 C0 D9 D8 D7 D6 D5
9
16
(1)
D4 D3 D2 D1 D0 S2 S1 S0
C2 C1
C2 C1
Figure 1. Serial Interface Timing
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