ADM1032

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4

ELECTRICAL CHARACTERISTICS

Parameter

Unit

Max

Typ

Min

Conditions

Serial Bus Timing (Note 2)

SDATA Output Low Sink Current

SDATA forced to 0.6 V

6.0

mA

ALERT Output Low Sink Current

ALERT forced to 0.4 V

1.0

mA

−1.0

+1.0

mA

Input Capacitance, SCLK, SDATA

5.0

pF

Clock Frequency

400

kHz

SMBus Timeout (Note 3)

25

64

ms

1.3

ms

0.6

ms

600

ns

Time from 10% of SDATA to 90% of SCLK

600

ns

Time from 90% of SCLK to 10% of SDATA

600

ns

Data Valid to SCLK Rising Edge Time,

Time for 10% or 90% of SDATA to 10% of SCLK

100

ns

300

ns

Between start/stop condition

1.3

ms

300

ns

300

ns

1. See Table 6 for information on other conversion rates.

2. Guaranteed by design, not production tested.

3. The SMBus timeout is a programmable feature. By default, it is not enabled. Details on how to enable it are available in the Serial Bus

Interface section.

Figure 2. Diagram for Serial Bus Timing

P

S

PS

SCLK

SDATA