Rainbow Electronics MAX5231 - Manual (Page 17)

MAX5230/MAX5231
3V/5V, 12-Bit, Serial Voltage-Output Dual DACs
with Internal Reference
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DAC A
V DD
DOUT
AGND SCLK DIN CS DGND
AMP A
AMP B
BANDGAP
REFERENCE
REFERENCE
BUFFER
DAC B
2.5V (1.25V)
( ) FOR MAX5230 ONLY
OUTA
OSA
OSB
OUTB
121k Ω
1k Ω
1k Ω SHUTDOWN
1k Ω SHUTDOWN
77.25k Ω
16-BIT
SHIFT REGISTER
SR
CONTROL
1
REF
1.25V
LDAC
RSTV
PDL
CLR
MAX5230
MAX5231
121k Ω
77.25k Ω
2X
(1X)
DAC
REGISTER
INPUT
REGISTERS
DECODE
CONTROL
Functional Diagram