2.7V to 3.6V and 4.5V to 5.5V, Low-Power,

4-/12-Channel 2-Wire Serial 8-Bit ADCs

4

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ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER REQUIREMENTS

MAX1037/MAX1039

2.7

3.6

Supply Voltage (Note 10)

MAX1036/MAX1038

4.5

5.5

V

Internal REF, external clock

350

650

188ksps

External REF, external clock

250

External REF, external clock

110

75ksps

External REF, internal clock

150

External REF, external clock

8

10ksps

External REF, internal clock

10

External REF, external clock

2

1ksps

External REF, internal clock

2.5

Supply Current

Power-down

1

10

µA

Power-Supply Rejection Ratio

PSRR

(Note 11)

±0.25

±1

LSB/V

TIMING CHARACTERISTICS FOR 2-WIRE FAST MODE (Figures 1A and 2)

Serial Clock Frequency

400

kHz

Bus Free Time Between a STOP

and a START Condition

1.3

µs

Hold Time for Start Condition

0.6

µs

Low Period of the SCL Clock

1.3

µs

High Period of the SCL Clock

0.6

µs

Setup Time for a Repeated START

Condition (Sr)

0.6

µs

Data Hold Time

(Note 12)

0

150

ns

Data Setup Time

100

ns

Rise Time of Both SDA and SCL

Signals, Receiving

(Note 13)

300

ns

Fall Time of SDA Transmitting

(Note 13)

300

ns

Setup Time for STOP Condition

0.6

µs

Capacitive Load for Each Bus Line

400

pF

Pulse Width of Spike Suppressed

50

ns

TIMING CHARACTERISTICS FOR 2-WIRE HIGH-SPEED MODE (Figures 1B and 2)

Serial Clock Frequency

(Note 14)

1.7

MHz

Hold Time (Repeated) Start

Condition

160

ns

Low Period of the SCL Clock

320

ns

High Period of the SCL Clock

120

ns