DS1631S

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P16

DS1631/DS1631A/DS1731

4 of 15

DC ELECTRICAL CHARACTERISTICS

(V

DD

= 2.7V to 5.5V; T

A

= -55°C to +125°C.)

PARAMETER SYMBOL CONDITION MIN MAX UNITS NOTES

Supply Voltage V

DD

2.7 5.5 V 1

0°C to +70°C,

3.0V ≤ V

DD

≤ 5.5V

±0.5

0°C to +70°C,

2.7V ≤ V

DD

< 3.0V

±1

DS1631, DS1631A

Thermometer Error

T

ERR

-55°C to +125°C ±2

°C 2

-10°C to +85°C,

3.0V ≤ V

DD

≤ 5.5V

±1

-10°C to +85°C,

2.7V ≤ V

DD

< 3.0V

±1.5

DS1731

Thermometer Error

T

ERR

-55°C to +125°C ±2

°C 2

Low-Level Input

Voltage

V

IL

-0.5 0.3 x V

DD

V

High-Level Input

Voltage

V

IH

0.7 x

V

DD

V

DD

+ 0.3 V

V

OL1

3mA sink current 0 0.4 SDA Low-Level

Output Voltage

V

OL2

6mA sink current 0 0.6

V

Input Current Each

I/O Pin

0.4 < V

I/O

< 0.9V

DD

-10 +10 µA

Temperature

conversion

-55°C to +85°C

1

Temperature

conversion

+85°C to +125°C

1.25

mA

E

2

write 400

Active Supply

Current

I

DD

Communication only 110

µA

3

Standby Supply

Current

I

STBY

0°C to +70°C 800 nA 4

V

OH

1mA source current 2.4 V 1 T

OUT

Output Logic

Voltage

V

OL

4mA sink current 0.4 V 1

DS1631/DS1631A/DS1731

5 of 15

AC ELECTRICAL CHARACTERISTICS

(V

DD

= 2.7V to 5.5V; T

A

= -55°C to +125°C.)

PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES

9-bit resolution 93.75

10-bit

resolution

187.5

11-bit

resolution

375

Temperature

Conversion Time

t

TC

12-bit

resolution

750

ms

SCL Frequency f

SCL

0 400 kHz

Bus Free Time

Between a STOP and

START Condition

t

BUF

1.3 µs 5

START and Repeated

START Hold Time

from Falling SCL

t

HD:STA

0.6 µs 5, 6

Low Period of SCL t

LOW

1.3 µs 5

High Period of SCL t

HIGH

0.6 µs 5

Repeated START

Condition Setup Time

to Rising SCL

t

SU:STA

0.6 µs 5

Data-Out Hold Time

from Falling SCL

t

HD:DAT

0

0.9 µs 5

Data-In Setup Time to

Rising SCL

t

SU:DAT

100 ns 5

Rise Time of SDA and

SCL

t

R

20 + 0.1C

B

1000 ns 5, 7

Fall Time of SDA and

SCL

t

F

20 + 0.1C

B

300 ns 5, 7

STOP Setup Time to

Rising SCL

t

SU:STO

0.6 µs 5

Capacitive Load for

Each Bus Line

C

B

400 pF

I/O Capacitance C

I/O

10 pF

Input Capacitance C

I

5 pF

Spike Pulse Width that

can be Suppressed by

Input Filter

t

SP

0 50 ns

NOTES:

1) All voltages are referenced to GND.

2) See Figure 2 for Typical Operating Curves.

3) Specified with T

OUT

pin open; A

0

, A

1

, A

2

= 0V or V

DD

; and f

SCL

≥ 2Hz.

4) Specified with temperature conversions stopped; T

OUT

pin open; SDA = V

DD

; SCL = V

DD

; and A

0

, A

1

,

A

2

= 0V or V

DD

.

5) See Timing Diagram in Figure 3. All timing is referenced to 0.9 x V

DD

and 0.1 x V

DD

.

6) After this period the first clock pulse is generated.

7) For example, if C

B

= 300pF, then t

R

[min] = t

F

[min] = 50ns.

DS1631/DS1631A/DS1731

6 of 15

EEPROM AC ELECTRICAL CHARACTERISTICS

(V

DD

= 2.7V to 5.5V; T

A

= -55°C to +125°C.)

PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS

EEPROM Write Cycle Time t

wr

4 10 ms

EEPROM Writes N

EEWR

-55°C to +55°C 50k Writes

EEPROM Data Retention t

EEDR

-55°C to +55°C 10 Years

Figure 2. TYPICAL OPERATING CURVES

Figure 3. TIMING DIAGRAM

All timing is referenced to 0.9 x V

DD

and 0.1 x V

DD

.

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 10 20 30 40 50 60 70

+3

σ

-3

σ

Mean

REFERENCE TEMPERATURE (°C)

ERROR (°C)

DS1631/DS1631A

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

-10 0 10 20

30 40 50 60 70 80

+3

σ

-3

σ

Mean

REFERENCE TEMPERATURE (°C)

ERROR (°C)

DS1731

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P16

DS1631S

Mfr. #:

Manufacturer:

Description:

SENSOR DIGITAL -55C-125C 8SOIC

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

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