12-Bit + Sign Digital Temperature Sensors

with Serial Interface

4

_______________________________________________________________________________________

Typical Operating Characteristics

100

200

150

300

250

400

350

-55

-5

20

45

-30

70

95

120 145

OPERATING SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

MAX6629

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

TEMPERATURE (

°C)

-4

-2

-3

0

-1

2

1

3

-55

-5

20

45

-30

70

95

120 145

TEMPERATURE ERROR

vs. TEMPERATURE

TEMPERATURE (

°C)

MAX6629

10

100k

10M

1k

100

10k

1M

100M

TEMPERATURE ERROR

vs. POWER-SUPPLY NOISE FREQUENCY

FREQUENCY (Hz)

0

4

2

6

8

10

12

0.1

μF CAPACITOR

0

25

50

75

100

125

-2

2

0

4

6

8

10

12

14

RESPONSE TO THERMAL SHOCK

TIME (s)

Pin Description

PIN

NAME

FUNCTION

MAX6629

MAX6631

MAX6630

MAX6632

1

2

N.C.

No Connect. Connect to ground plane for better thermal performance to the PC board.

2

1

GND

Ground

3

3

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

5

5

CS

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

—

—

EP

Exposed Pad (TDFN only). Connect to GND or leave unconnected.