MAX6613 datasheet(4/6 Pages) MAXIM

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Detailed Description

The MAX6613 analog output temperature sensor’s out-

put voltage is a discrete function of its die temperature.

The maximum supply current is 13µA, and the supply

voltage range is from 2.5V to 5.5V for the -55°C to

+130°C temperature range, or 1.8V to 5.5V for the

+25°C to +130°C temperature range.

Transfer Function

The temperature-to-voltage transfer function is approxi-

mately linear and can be described by the quadratic

equation:

VOUT = -0.0000022 ✕ T2 - 0.01105 ✕ T + 1.8455V

In many cases, a linear approximation can be applied:

VOUT = -0.01123 ✕ T + 1.8455V

where T is the die temperature of the MAX6613 in °C.

Therefore:

T = (1.8455 - VOUT) / 0.01123V

Compatibility with Other Temperature

Sensors

The MAX6613 can be used to replace temperature sen-

sors using other output algorithms. Table 1 provides

information for a linear and quadratic output equation.

Contact the factory for performance information about

another equation.

Low-Voltage Analog Temperature

Sensor in an SC70 Package

_______________________________________________________________________________________

Table 1. Linear and Quadratic Output Equation

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VCC = 2.7V, TA = -55°C

2.06

6.57

VCC = 2.7V, TA = -40°C

1.19

5.73

VCC = 2.7V, TA = -20°C

0.55

4.36

VCC = 2.7V, TA = 0°C

0.35

2.85

VCC = 2.7V, TA = +20°C

-0.37

+2.15

VCC = 2.7V, TA = +40°C

-1.32

+1.61

VCC = 2.7V, TA = +60°C

-2.02

+1.92

VCC = 2.7V, TA = +85°C

-2.32

+1.66

VCC = 2.7V, TA = +100°C

-2.78

+2.01

VCC = 2.7V, TA = +125°C

-3.11

+2.54

Temperature Error

Based on:

OUT = 1.8639 - 0.0115 ✕ Temp

(Note 4)

VCC = 2.7V, TA = +130°C

-3.37

+2.90

°C

VCC = 2.7V, TA = -55°C

1.08

5.76

VCC = 2.7V, TA = -40°C

0.67

5.33

VCC = 2.7V, TA = -20°C

0.42

4.28

VCC = 2.7V, TA = 0°C

0.35

2.85

VCC = 2.7V, TA = +20°C

-0.49

+1.99

VCC = 2.7V, TA = +30°C

-0.95

+1.53

VCC = 2.7V, TA = +40°C

-1.81

+1.05

VCC = 2.7V, TA = +50°C

-1.93

+0.54

VCC = 2.7V, TA = +60°C

-3.11

+0.67

VCC = 2.7V, TA = +85°C

-4.51

-0.74

VCC = 2.7V, TA = +100°C

-5.77

-1.28

VCC = 2.7V, TA = +125°C

-7.74

-2.52

Temperature Error

Based on:

OUT = 1.8639 - 0.0115 ✕ Temp -

0.00000388 ✕ Temp2 (Note 4)

VCC = 2.7V, TA = +130°C

-8.35

-2.58

°C

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