Datasheet

MAX1117/MAX1118/MAX1119
Single-Supply, Low-Power,
2-Channel, Serial 8-Bit ADCs
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should be low impedance and as short as possible for
noise-free operation.
High-frequency noise in the V
DD
power supply may
affect the comparator in the ADC. Bypass the supply to
the star ground with a 0.1µF capacitor close to the V
DD
pin of the MAX1117/MAX1118/MAX1119. Minimize
capacitor lead lengths for best supply-noise rejection. If
the power supply is noisy, a 1µF capacitor in conjunc-
tion with a 10Ω series resistor can be connected to
form a lowpass filter.
Chip Information
TRANSISTOR COUNT: 2000
PROCESS: BiCMOS
INPUT
MULTIPLEXER
SCLK
CNVST
CH0
INPUT
TRACK
AND HOLD
INTERNAL
REFERENCE
+2.096V
OR +4.096V
8-BIT
SAR
ADC
OUTPUT
SHIFT
REGISTER
OUT
CONTROL
LOGIC AND
INTERNAL
OCSILLATOR
MAX1117
MAX1119
CH1
V
DD
GND
Functional Diagrams