Datasheet > LTC2995

LTC2995

更新时间： 2024-11-29 11:45:59

品牌	Logo	应用领域
Linear Systems		传感器温度传感器监视器
页数	文件大小	规格书
20页	221K
描述
Temperature Sensor and Dual Voltage Monitor with Alert Outputs

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中文翻译

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LTC2995 数据手册

LTC2995

Temperature Sensor and

Dual Voltage Monitor with

Alert Outputs

FEATURES

DESCRIPTION

The LTC^®2995 is a high accuracy temperature sensor

and dual supply monitor. It converts the temperature of

an external diode sensor and/or its own die temperature

to an analog output voltage while rejecting errors due to

noise and series resistance. Two supply voltages and the

measured temperature are compared against upper and

lower limits set with resistive dividers. If a threshold is

exceeded, the device communicates an alert by pulling

low the correspondent open drain logic output.

Monitors Temperature and Two Voltages

Voltage Output Proportional to Temperature

Adjustable Thresholds for Temperature and Voltage

±±1° Remote Temperature Accuracy

±ꢀ1° ꢁnternal Temperature Accuracy

1.5% Voltage Threshold Accuracy

3.5ms Update Time

2.25V to 5.5V Supply Voltage

Input Glitch Rejection

Adjustable Reset Timeout

The LTC2995 gives 1°C accurate temperature results

using commonly available NPN or PNP transistors or

temperaturediodesbuiltintomoderndigitaldevices. Volt-

ages are monitored with 1.5% accuracy. A 1.8V reference

outputsimplifiesthresholdprogrammingandcanbeused

as an ADC reference input.

220μA Quiescent Current

Open Drain Alert Outputs

Available in 3mm × 3mm QFN Package

APPLICATIONS

TheLTC2995providesanaccurate, lowpowersolutionfor

temperature and voltage monitoring in a compact 3mm ×

3mm QFN package.

Network Servers

Core, I/O Voltage Monitors

Desktop and Notebook Computers

Environmental Monitoring

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

TYPICAL APPLICATION

Dual OV/UV Supply and Single OT/UT Remote Temperature Monitor

V_PTATvs Remote

Diode Temperature

2.5V

1.2V

1.8

1.6

1.4

1.2

ASIC

–

470pF

0.1ꢀF

TEMPERATURE

SENSOR

194k

10.2k

45.3k

VH1

LTC2995

VL1

VH2

VL2

4mV/K

1.0

0.8

PTAT

64.4k

10.2k

45.3k

OT T > 125°C

UT T < 75°C

+10%

SYSTEM

MONITOR

TO2

TO1

75 100

125 150

REMOTE DIODE TEMPERATURE (°C)

–50 –25

25 50

–10%

2995 TA01b

VT2

VT1

GND TMR

REF

20k

5nF

20k

140k

2995 TA01a

2995f

12 3 4 5 6 7...20

中文翻译

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与LTC2995相关器件

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LTC2996	Linear	获取价格	Temperature Sensor with Alert Outputs Voltage Output Proportional to Temperature
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