Single-Supply, Low-Power,

2-Channel, Serial 8-Bit ADCs

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3

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

EXTERNAL REFERENCE (MAX1118 ONLY)

Input Voltage Range

1.0

V

Input Current

10

20

µA

POWER REQUIREMENTS

MAX1118

2.7

5.5

MAX1117

2.7

5.5

Supply Voltage

MAX1119

4.5

5.5

V

zero-scale input

182

230

zero-scale input

135

190

zero-scale input

19

25

zero-scale input

14

21

Supply Current (Note 2)

Shutdown

0.8

10

µA

Supply Rejection Ratio

PSRR

Full-scale or 0 input

±0.5

±1

LSB/V

DIGITAL INPUTS (CNVST AND SCLK)

Input High Voltage

2

V

Input Low Voltage

0.8

V

Input Hystersis

0.2

V

Input Current High

±10

µA

Input Current Low

±10

µA

Input Capacitance

2

pF

DIGITAL OUTPUT (DOUT)

Output High Voltage

V

0.4

V

Output Low Voltage

0.8

V

Three-State Leakage Current

±0.01

±10

µA

Three-State Output Capacitance

4pF

TIMING CHARACTERISTICS (Figures 6a–6d)

CNVST High Time

100

ns

CNVST Low Time

100

ns

Conversion Time

7.5

µs

Serial Clock High Time

75

ns

Serial Clock Low Time

75

ns

Serial Clock Period

200

ns

Falling of CNVST to DOUT Active

100

ns

ELECTRICAL CHARACTERISTICS (continued)

unless otherwise noted.)