Datasheet

MAX1117/MAX1118/MAX1119
Single-Supply, Low-Power,
2-Channel, Serial 8-Bit ADCs
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Typical Operating Characteristics (continued)
(V
DD
= +3V (MAX1117), V
DD
= +5V (MAX1119), V
DD
= V
REF
= +3V (MAX1118), f
SCLK
= 5MHz, f
SAMPLE
= 100ksps, C
LOAD
= 100pF,
T
A
= +25°C, unless otherwise noted.)
0
10.5%
7.0%
3.5%
17.5%
21.0%
14.0%
3.980 4.020 4.1404.1004.060 4.180
REFERENCE VOLTAGE vs.
NUMBER OF PIECES
MAX1115 toc25
REFERENCE VOLTAGE (V)
0
10.5%
7.0%
3.5%
17.5%
21.0%
14.0%
1.982 2.008 2.0862.0602.034 2.112
REFERENCE VOLTAGE vs.
NUMBER OF PIECES
MAX1117/18/19 toc26
REFERENCE VOLTAGE (V)
Pin Description
PIN NAME FUNCTION
1V
DD
Positive Supply Voltage
2 CH0 CH0 Analog Voltage Input
3 CH1 CH1 Analog Voltage Input
4 GND Ground
5
I.C.(REF)
Internally Connected. Connect to ground. (Reference Input, MAX1118 only.)
6 CNVST Convert/Start Input. CNVST initiates a power-up and starts a conversion on its falling edge.
7DOUT
Serial Data Output. Data is clocked out on the falling edge of SCLK. DOUT goes low at the start of a
conversion and presents the MSB at the completion of a conversion. DOUT goes high impedance
once data has been fully clocked out.
8 SCLK Serial Clock. Used for clocking out data on DOUT.