–3–

REV. 0

ADM1024

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

SERIAL BUS DIGITAL INPUTS

(SCL, SDA)

2.2

V

0.8

V

Hysteresis

500

mV

Glitch Immunity

100

ns

DIGITAL INPUT LOGIC LEVELS

(See Note 7)

(ADD, CI,

RESET, VID0–VID4, FAN1, FAN2)

2.2

V

0.8

V

NTEST_IN

2.2

V

DIGITAL INPUT CURRENT

–1

µAV

1

20

pF

SERIAL BUS TIMING

8

400

kHz

See Figure 1

50

ns

See Figure 1

1.3

µs

See Figure 1

600

ns

See Figure 1

600

ns

See Figure 1

1.3

µs

See Figure 1

0.6

µs

See Figure 1

300

ns

See Figure 1

300

µs

See Figure 1

100

ns

See Figure 1

900

ns

See Figure 1

NOTES

°C and represent most likely parametric norm. Shutdown current typ is measured with V

protection resistor value between zero and 1 k

Ω.

× 755 µs + n × 33244 µs, where m is the number of channels configured as analog inputs, plus two for the internal V

CC

measurement and internal temperature sensor, and n is the number of channels configured as external temperature channels (D1 and D2).

Specifications subject to change without notice.

P

S

P

S

SCL

SDA

Figure 1. Diagram for Serial Bus Timing