Rainbow-electronics MAX6652 Manual de usuario descargar pdf (Pagina 3)

MAX6652

Temperature Sensor and System Monitor

in a 10-Pin µMAX

_______________________________________________________________________________________ 3

Note 1: Total monitoring time includes temperature conversion and four analog input voltage conversions.

Note 2: A master device must provide at least a 300ns hold time for the SDA signal, referred to V

of the SCL signal, to bridge the

undefined region of SCL’s falling edge.

Note 3: C

= total capacitance of one bus line in pF. Rise and fall times are measured between 0.3 x V

to 0.7 x V

Note 4: Input filters on SDA, SCL, and ADD suppress noise spikes <50ns.

Note 5: Guaranteed but not tested over the entire temperature range.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

START Condition Hold Time t

HD:STA

0.6 µs

STOP Condition Hold Time t

SU:STO

0.6 µs

Clock Low Period t

LOW

1.3 µs

Clock High Period t

HIGH

0.6 µs

Data Setup Time t

SP:DAT

100 ns

Data Hold Time t

HD:DAT

(Note 2) 0 0.9 µs

Receive SCL/SDA Minimum

Rise Time

(Note 3)

20 +

0.1C

Receive SCL/SDA Maximum

Rise Time

(Note 3) 300 ns

Receive SCL/SDA Minimum

Fall Time

(Note 3)

20 +

0.1C

Receive SCL/SDA Maximum

Fall Time

(Note 3) 300 ns

Transmit SDA Fall Time t

400pF, I

SINK

= 3mA

20 +

0.1C

300 ns

Pulse Width of Spike

Suppressed

(Note 4) 50 ns

ELECTRICAL CHARACTERISTICS (continued)

= -40°C to +125°C, unless otherwise noted. Typical values are at V

= +5V, T

= +25°C.)

Typical Operating Characteristics

= +5V, ADD = GND, ALERT = 10k

Ω

to V

, T

= +25°C, unless otherwise noted.)

100

200

150

250

300

2.5 3.5 4.03.0 4.5 5.0 5.5

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX6652 toc01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (µA)

A: T

= +125°C

B: T

= +85°C

C: T

= +25°C

D: T

= 0°C

E: T

= -40°C

250

225

200

175

150

1 1000

SUPPLY CURRENT

vs. SCL CLOCK FREQUENCY

MAX6652 toc02

CLOCK FREQUENCY (kHz)

SUPPLY CURRENT (µA)

= +5V

SCL = 0 to +5V

-5

-2

-3

-4

-1

2.5 3.53.0 4.0 4.5 5.0 5.5

TEMPERATURE ERROR

vs. SUPPLY VOLTAGE

MAX6652 toc03

SUPPLY VOLTAGE (V)

TEMPERATURE ERROR (°C)

= +85°C

= 0°C

= -40°C

1 2 3 4 5 6 7 8 ... 11 12

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Rainbow-electronics MAX6652 Manual de usuario Pagina 3

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