LM76 datasheet(4/22 Pages) TI

4 / 22 page

LM76

SNIS109E – JANUARY 2000 – REVISED MARCH 2013

www.ti.com

Temperature-to-Digital Converter Characteristics

Unless otherwise noted, these specifications apply for +VS = +5.0 Vdc ±10% for the LM76CHM-5.

(1). Boldface limits apply

for TA = TJ = TMIN to TMAX; all other limits TA = TJ = +25°C, unless otherwise noted.

Typical(2)

LM76CNM-3

LM76CHM-5

Units

Parameter

Conditions

Limits(3)

(Limit)

TA = +70°C to +100°C

±1.0

TA = −20°C to +85°C for

±1.5

LM76CHM-5

Accuracy(1)

TA = −10°C to +45°C

±1.0

TA = +25°C

±0.5

Bits

Resolution

See(4)

0.0625

°C

Temperature Conversion Time

See(5)

400

500

1000

I2C Inactive

0.25

I2C Active

0.25

0.5

0.45

mA (max)

Shutdown Mode:

µA

Quiescent Current

µA (max)

TA = +85°C

µA (max)

TA = +25°C

µA (max)

THYST Default Temperature

See(6)(7)

°C

TLOW Default Temperature

See(7)

°C

THIGH Default Temperature

See(7)

°C

TCRIT Default Temperature

See(7)

°C

(1)

The LM76 will operate properly over the +VS supply voltage range of 3V to 5.5V for the LM76CNM-3 and the LM76CHM-5. The

LM76CNM-3 is tested and specified for rated accuracy at the nominal supply voltage of 3.3V. Accuracy of the LM76CNM-3 will degrade

0.2°C for a ±1% variation in +VS from the nominal value. The LM76CHM-5 is tested and specified for a rated accuracy at the nominal

supply voltage of 5.0V. Accuracy of the LM76CHM-5 will degrade 0.08°C for a ±1% variation in +VS from the nominal value.

(2)

Typicals are at TA = 25°C and represent most likely parametric norm.

(3)

Limits are ensured to AOQL (Average Outgoing Quality Level).

(4)

12 bits + sign, two's complement

(5)

This specification is provided only to indicate how often temperature data is updated. The LM76 can be read at any time without regard

to conversion state (and will yield last conversion result). If a conversion is in process it will be interrupted and restarted after the end of

the read.

(6)

Hysteresis value adds to the TLOW setpoint value (e.g.: if TLOW setpoint = 10°C, and hysteresis = 2°C, then actual hysteresis point is

10+2 = 12°C); and subtracts from the THIGH and T_CRIT setpoints (e.g.: if THIGH setpoint = 64°C, and hysteresis = 2°C, then actual

hysteresis point is 64

−2 = 62°C). For a detailed discussion of the function of hysteresis refer to TEMPERATURE COMPARISON, and

Figure 6.

(7)

Default values set at power up.

Submit Documentation Feedback

Product Folder Links: LM76

LM76 датащи(PDF) 4 Page - Texas Instruments

LM76 датащи(HTML) 4 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

датащи скачать

ссылки URL