ADM1033ARQ-REEL7 Просмотр технического описания (PDF) - Analog Devices

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производитель

ADM1033ARQ-REEL7

Thermal Monitor and Fan Speed (RPM) Controller

Analog Devices 

ADM1033

Parameter

TACHOMETER ACCURACY

Fan Speed Measurement Accuracy

AGTL + INPUT (THERM)

Input High Level

Input Low Level

SERIAL BUS TIMING3

Clock Frequency, fSCLK

Glitch Immunity, tSW

Bus Free Time, tBUF

Start Setup Time, tSU:STA

Start Hold Time, tHD:STA

Stop Condition Setup Time, tSU:STO

SCL Low Time, tLOW

SCL High Time, tHIGH

SCL, SDA Rise Time, tr

SCL, SDA Fall Time, tf

Data Setup Time, tSU:DAT

Detect Clock Low Timeout, tTIMEOUT

Min Typ

Max Units

±4

%

0.75 × REF

V

0.4

V

50

1.3

0.6

0.6

0.6

1.3

0.6

100

25

400 kHz

ns

µs

µs

µs

µs

µs

µs

1000 ns

300 ns

ns

35

ms

Test Conditions/Comments

See Figure 2

See Note 4

1 Typicals are at TA = 25°C and represent most likely parametric norm. Standby current typ is measured with VCC = 3.3 V. Timing specifications are tested at logic levels of

VIL = 0.8 V for a falling edge and VIH = 2.1 V for a rising edge.

2 Operation at 5.5 V is guaranteed by design, not production tested.

3 Guaranteed by design, not production tested.

4 SMBus timeout disabled by default. See the SMBus Timeout section for more information.

SCL

tLOW tR

tHD:STA

tHD:DAT

SDA

tBUF

P

S

tF

tHIGH

tSU:DAT

tHD:STA

tSU:STA

S

Figure 2. Serial Bus Timing Diagram

tSU:STO

P

Rev. 0 | Page 5 of 40

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