MCP9700-H/TT MICROCHIP [Microchip Technology], MCP9700-H/TT Datasheet

MCP9700-H/TT

Manufacturer Part Number

MCP9700-H/TT

Description

Manufacturer

MICROCHIP [Microchip Technology]

Datasheet

1.MCP9700-HTT.pdf (24 pages)

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Features

• Tiny Analog Temperature Sensor

• Available Packages:

• Wide Temperature Measurement Range:

• Accuracy:

• Optimized for Analog-to-Digital Converters

• Wide Operating Voltage Range:

• Low Operating Current: 6 µA (typical)

• Optimized to Drive Large Capacitive Loads

Typical Applications

• Hard Disk Drives and Other PC Peripherals

• Entertainment Systems

• Home Appliance

• Office Equipment

• Battery Packs and Portable Equipment

• General Purpose Temperature Monitoring

Package Type

- SC70-5, SOT-23-5, TO-92-3

- -40°C to +125°C (Extended Temperature)

- -40°C to +150°C (High Temperature)

- ±2°C (max.), 0°C to +70°C (MCP9700A/9701A)

- ±4°C (max.), 0°C to +70°C (MCP9700/9701)

(ADCs):

- 10.0 mV/°C (typical) MCP9700/9700A

- 19.5 mV/°C (typical) MCP9701/9701A

- V

(MCP9700/9700A)

= 2.3V to 5.5V MCP9700/9700A

= 3.1V to 5.5V MCP9701/9701A

MCP9700/9701

3-Pin TO-92

OUT

Low-Power Linear Active Thermistor™ ICs

Only

GND

Bottom

1 2 3

View

MCP9700/9700A

MCP9701/9701A

3-Pin SOT-23

GND

MCP9700/9700A

MCP9701/9701A

OUT

Description

The MCP9700/9700A and MCP9701/9701A family of

Linear Active Thermistor™ Intergrated Circuit (IC) is an

analog temperature sensor that converts temperature

to analog voltage. It’s a low-cost, low-power sensor

with an accuracy of ±2°C from 0°C to +70°C

(MCP9700A/9701A)

(MCP9700/9701) while consuming 6 µA (typical) of

operating current.

Unlike resistive sensors (such as thermistors), the

Linear Active Thermistor IC does not require an

additional signal-conditioning circuit. Therefore, the

biasing circuit development overhead for thermistor

solutions can be avoided by implementing this low-cost

device. The voltage output pin (V

connected to the ADC input of a microcontroller. The

MCP9700/9700A and MCP9701/9701A temperature

coefficients are scaled to provide a 1°C/bit resolution

for an 8-bit ADC with a reference voltage of 2.5V and

5V, respectively.

The MCP9700/9700A and MCP9701/9701A provide a

low-cost solution for applications that require measure-

ment of a relative change of temperature. When

measuring relative change in temperature from +25°C,

an accuracy of ±1°C (typical) can be realized from 0°C

to +70°C. This accuracy can also be achieved by

applying system calibration at +25°C.

In addition, this family is immune to the effects of

parasitic capacitance and can drive large capacitive

loads. This provides Printed Circuit Board (PCB) layout

design flexibility by enabling the device to be remotely

located from the microcontroller. Adding some

capacitance at the output also helps the output

transient

undershoots. However, capacitive load is not required

for sensor output stability.

response

GND

OUT

±4°C

MCP9700/9700A

MCP9701/9701A

5-Pin SC70

reducing

from

OUT

0°C

DS21942E-page 1

) can be directly

overshoots

+70°C

Related parts for MCP9700-H/TT

MCP9700-H/TT Summary of contents

Page 1

... It’s a low-cost, low-power sensor with an accuracy of ±2°C from 0°C to +70°C (MCP9700A/9701A) ±4°C (MCP9700/9701) while consuming 6 µA (typical) of operating current. Unlike resistive sensors (such as thermistors), the Linear Active Thermistor IC does not require an additional signal-conditioning circuit. Therefore, the ...

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... Note 1: The MCP9700/9700A family accuracy is tested with V tested with V = 5.0V The MCP9700/9700A and MCP9701/9701A family is characterized using the first-order or linear equation, as shown in Equation 4-2. Also refer to 3: SC70-5 package thermal response with 1x1 inch, dual-sided copper clad, TO-92-3 package thermal response without PCB (leaded). ...

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... The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. Note: Unless otherwise indicated, MCP9700/9700A: V GND = Ground 0.1 µF. ...

Page 6

... MCP9700/9700A and MCP9701/9701A Note: Unless otherwise indicated, MCP9700/9700A: V GND = Ground 0.1 µF. bypass 35 3.3V DD 30% 108 samples 25% 20% 15% 10% MCP9700 (mV) 0°C FIGURE 2-7: Output Voltage at 0°C (MCP9700/9700A). 45% MCP9700 40% MCP9700A 35 3.3V DD 30% 108 samples 25% 20% 15% 10 (mV/°C) C FIGURE 2-8: Occurrences vs. ...

Page 7

... MCP9700/9700A and MCP9701/9701A Note: Unless otherwise indicated, MCP9700/9700A: V GND = Ground 0.1 µF. bypass 1 +26°C A 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 V (V) DD FIGURE 2-13: Output Voltage vs. Power Supply DD_STEP OUT Time (ms) FIGURE 2-14: Output vs. Settling Time to step 130 105 1 in in. Copper Clad PCB ...

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... GND is the system ground pin. 3.2 Output Voltage Pin (V OUT The sensor output can be measured at V voltage range over the operating temperature range for the MCP9700/9700A is 100 mV to 1.75V and for the MCP9701/9701A, 200 © 2009 Microchip Technology Inc. Table 3-1. Symbol NC No Connect (this pin is not connected to the die) ...

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... For higher accuracy using a sensor compensation technique, refer to AN1001 “IC Temperature Sensor Accuracy Compensation Microcontroller” (DS01001). The application note shows that if the MCP9700 is compensated in addition to room temperature calibration, the sensor accuracy can be improved to ±0.5°C (typical) accuracy over the operating temperature 6.0 ...

Page 12

... MCP9700/9700A and MCP9701/9701A 4.2 Shutdown Using Microcontroller I/O Pin The MCP9700/9700A and MCP9701/9701A family of low operating current of 6 µA (typical) makes it ideal for battery-powered applications. However, applications that require tighter current budget, this device can be powered using a microcontroller Input/ Output (I/O) pin. The I/O pin can be toggled to shut ...

Page 13

... MCP9700/9700A and MCP9701/9701A 5.0 PACKAGING INFORMATION 5.1 Package Marking Information 3-Lead SOT-23 XXNN 3-Lead TO-92 XXXXXX XXXXXX XXXXXX YWWNNN 5-Lead SC70 XXNN Legend: XX...X Customer-specific information Y Year code (last digit of calendar year) YY Year code (last 2 digits of calendar year) WW Week code (week of January 1 is week ‘01’) ...

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... Updated Package Outline Drawings. Revision C (June 2006) The following is the list of modifications: 1. Added the MCP9700A and MCP9701A devices to data sheet. 2. Added TO92 package for the MCP9700/ MCP9701. Revision B (October 2005) The following is the list of modifications: 1. Added Section 3.0 “Pin Descriptions”. 2. Added the Linear Active Thermistor™ IC trademark ...

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... Linear Active Thermistor™ IC, Tape and Reel, Pb free MCP9701AT: Linear Active Thermistor™ IC, Tape and Reel, Pb free -40 ° +125 ° C Temperature Range -40 ° +150 ° C (MCP9700 only Package Plastic Small Outline Transistor, 5-lead TO = Plastic Small Outline Transistor, 3-lead ...

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Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families ...

Page 24

W ORLDWIDE AMERICAS ASIA/PACIFIC Corporate Office Asia Pacific Office 2355 West Chandler Blvd. Suites 3707-14, 37th Floor Chandler, AZ 85224-6199 Tower 6, The Gateway Tel: 480-792-7200 Harbour City, Kowloon Fax: 480-792-7277 Hong Kong Technical Support: Tel: 852-2401-1200 http://support.microchip.com Fax: 852-2401-3431 ...

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