MAX6691_07 datasheet(2/7 Pages) MAXIM

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Four-Channel Thermistor Temperature-to-Pulse-

Width Converter

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Note 1: Specification limits over temperature are guaranteed by design, not production tested.

VCC to GND ...........................................................-0.3V to +6.0V

All Other Pins to GND.................................-0.3V to (VCC + 0.3V)

I/O, R+, R-, T1–T4 Current................................................±20mA

ESD Protection (Human Body Model) .............................±2000V

Continuous Power Dissipation (TA = +70°C)

10-Pin µMAX (derate 5.6mW/°C above +70°C) ........444.4mW

Operating Temperature Range .........................-55°C to +125°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

ELECTRICAL CHARACTERISTICS

(VCC = 3.0V to 5.5V, TA = -55°C to +125°C, unless otherwise noted. Typical values are specified at VCC = 3.3V and TA = +25°C.) (Note1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

TA = +25

°C, VCC = 3.3V

0.5

THIGH/TLOW Accuracy

VREXT

TA = TMIN to TMAX

1.0

% FS

Supply Voltage Range

VCC

3.0

5.5

Supply Current

ICC

During conversion, no load

300

600

µA

Sleep-Mode Supply Current

ISTANDBY

3.5

µA

Input Leakage Current

ILEAKAGE

1.0

µA

Reference Voltage Output

VREF

IREF = 1mA, TA = +25

°C

1.19

1.24

1.32

Reference Load Regulation

0 < IREF < 2mA

0.1

0.2

Reference Supply Rejection

0.2

Logic Input Low Voltage

VIL

0.3 ✕

VCC

Logic Input High Voltage

VIH

0.7 ✕

VCC

TIMING CHARACTERISTICS

(VCC = 3.0V to 5.5V, TA = -55°C to +125°C, unless otherwise noted. Typical values are specified at VCC = 3.3V and TA = +25°C.)

(Figure 1) (Note1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Glitch Immunity on I/O Input

500

Conversion Time

tCONV

102

156

Nominal Pulse Width

tLOW

4.0

4.9

7.5

Start Pulse Width

tSTART

5µs

Data Ready Pulse Width

tREADY

103

122

188

µs

Error Pulse Width

tERROR

103

122

188

µs

Rise Time

tRISE

CL = 15pF, RL = 10k

Ω

600

Fall Time

tFALL

CL = 15pF, RL = 10k

Ω

600

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