Rainbow-electronics MAX6632 Manual do Utilizador descarregar pdf (Página 4)

MAX6629–MAX6632

12-Bit + Sign Digital Temperature Sensors

with Serial Interface

4 _______________________________________________________________________________________

100

200

150

300

250

400

350

-55 -5 20 45-30 70 95 120 145

OPERATING SUPPLY CURRENT vs.

TEMPERATURE

MAX6629-32 toc01

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

MAX6629

= +5.5V

= +4.5V

= +5.0V

= +3.0V

= +3.3V

= +3.6V

0.6

1.0

0.8

1.4

1.2

1.8

1.6

2.0

2.4

2.2

2.6

-55 -5 20 45-30 70 95 120 145

POWER-ON RESET (POR)

THRESHOLD vs.TEMPERATURE

MAX6629-32 toc02

TEMPERATURE (°C)

POWER-ON RESET THRESHOLD (V)

-4

-2

-3

-1

-55 -5 20 45-30 70 95 120 145

TEMPERATURE ERROR vs.

TEMPERATURE

MAX6629-32 toc03

TEMPERATURE (°C)

TEMPERATURE ERROR (°C)

MAX6629

10 100k 10M1k100 10k 1M 100M

TEMPERATURE ERROR vs.

POWER-SUPPLY NOISE FREQUENCY

MAX6629-32 toc04

FREQUENCY (Hz)

TEMPERATURE ERROR (°C)

= SQUARE WAVE

APPLIED TO V

WITH NO

0.1µF CAPACITOR

= 250mVp-p

100

125

-2 20 4 6 8 10 12 14

RESPONSE TO THERMAL SHOCK

MAX6629-32 toc05

TIME (s)

TEMPERATURE (°C)

Typical Operating Characteristics

= +3.3V, T

= +25°C, unless otherwise noted.)

MAX6629

MAX6631

MAX6630

MAX6632

NAME FUNCTION

1 2 N.C. No Connect. Connect to ground plane for better thermal performance to the PC board.

2 1 GND Ground

33V

Supply Voltage Input. Bypass V

to GND with a 0.1µF capacitor. V

can also be

powered from a logic output as long as the voltage level is greater than 3.0V and the logic

output is not noisy. Setting the logic output low provides a hardware shutdown mode.

4 4 SCK Serial Clock Input

55CS

Chip-Select Input. Enables the interface. A rising edge off CS initiates the next conversion.

Pulling CS low initiates an idle state.

6 6 SO Serial Data Output

Pin Description

1 2 3 4 5 6 7 8

MAX6629–MAX6632 1

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