User guide

MAX1272/MAX1273
Fault-Protected, 12-Bit ADCs
with Software-Selectable Input Range
18 ______________________________________________________________________________________
MAX1272
MAX1273
5V
0.1µF
1.0µF
AIN
REF
GND
V
DD
SCLK
DIN
DOUT
I/O
SCK
MOSI
MISO
CS
µP
Typical Operating Circuit
Chip Information
TRANSISTOR COUNT: 6146
PROCESS: BiCMOS
5V V
LOGIC
= 5V GND
SUPPLIES
DGND5V
GND
0.1µF
V
DD
DIGITAL
CIRCUITRY
R* = 5Ω
*OPTIONAL
MAX1272
MAX1273
Figure 14. Power-Supply Grounding Connections