LM77

SNIS103F – JUNE 1999 – REVISED MARCH 2013

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Temperature-to-Digital Converter Characteristics

±10% for LM77CIM-3, LM77CIMM-3

unless otherwise noted.

Units

Parameter

Test Conditions

(Limit)

Accuracy

±1.5

±2.0

°C (max)

±3.0

Resolution

10

Bits

0.5

°C

Temperature Conversion Time

70

125

ms

Quiescent Current

0.25

mA

0.25

0.5

mA (max)

Shutdown Mode

5

10

μA

2

°C

10

°C

64

°C

80

°C

(1)

the nominal value.

(2)

(3)

Limits are guaranteed to TI's AOQL (Average Outgoing Quality Level).

(4)

9 bits + sign, two's complement

(5)

This specification is provided only to indicate how often temperature data is updated. The LM77 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 point is 64

−2 = 62°C). For a detailed discussion of the function of hysteresis refer to Section 1.1, TEMPERATURE

COMPARISON, and Figure 7.

(7)

Default values set at power up.

Logic Electrical Characteristics Digital DC Characteristics

otherwise noted.

Units

Parameter

Test Conditions

(Limit)

SDA and SCL Logical “1” Input Voltage

V (min)

V (max)

SDA and SCL Logical “0” Input Voltage

−0.3

V (min)

V (max)

A0 and A1 Logical “1” Input Voltage

2.0

V (min)

V (max)

A0 and A1 Logical “0” Input Voltage

−0.3

V (min)

0.8

V (max)

Logical “1” Input Current

0.005

1.0

μA (max)

Logical “0” Input Current

−0.005

−1.0

μA (max)

Capacitance of All Digital Inputs

20

pF

Logic “1” Output Leakage Current

10

μA (max)

(1)

(2)

Limits are guaranteed to TI's AOQL (Average Outgoing Quality Level).

4

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