A2TPMI336L5.5OAC datasheet, PDF

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A2TPMI336L5.5OAC: DescriptionThermopile with integrated signal processing circuit; File Size318KB，21 Pages; ManufacturerPerkinElmer Inc.; Websitehttp://www.perkinelmer.com.cn/

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A2TPMI336L5.5OAC Overview

Thermopile with integrated signal processing circuit

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Datasheet

A2TPMI

Thermopile with integrated signal processing circuit

FEATURES

Smart thermopile sensor with integrated

signal processing.

Can be adapted to your specific meas-

urement task.

Integrated, calibrated ambient tempera-

ture sensor.

Output signal ambient temperature com-

pensated.

Fast reaction time.

Different optics and IR filters available.

Digital serial interface for calibration and

adjustment purposes.

Analog frontend/backend, digital signal

processing.

E PROM for configuration and data stor-

age.

Configurable comparator with high/low

signal for remote temperature threshold

control.

TO 39 6 pin housing.

APPLICATIONS

Miniature remote non contact temperature

measurement (pyrometer).

Temperature dependent switch for alarm or

thermostatic applications

Residential, commercial, automotive, and in-

dustrial climate control.

Household appliances featuring a remote tem-

perature control like microwave oven, toaster,

hair dryer.

Temperature control in laser printers and copi-

ers.

Automotive climate control.

FUNCTIONAL DIAGRAM

Offset correction

Switch A

Comp 1

Switch C

Tobj

PTAT

Serial Interface

(SCLK, SDAT)

Signal-

processor

Vref

Comp 2

Control Unit

Switch B

Switch D

Tamb

/ V

Ref

TP:

PTAT:

Thermopile

Temperature Sensor

Tobj

Tamb

Ref

Output voltage object temperature

Output voltage ambient temperature

1.225 V reference voltage

A2TPMI Datasheet Rev4

Page 1 of 21

Rev. Oct 2003

Datasheet

DESCRIPTION

A2TPMI

The PerkinElmer A2TPMI is a versatile infrared thermopile sensor with an integrated configurable ASIC

for signal processing and ambient temperature compensation. This integrated infrared module senses

the thermal radiation emitted by objects and converts this to a analog voltage.

The A2TPMI can be delivered fully factory calibrated and adapted to the customer specification, as well

as customer programmable via the serial interface. In the pre-calibrated version, only three pins are

necessary for operation: object output voltage, 5V supply voltage, and ground.

As described in this specification, the temperature accuracy of the fully adjustable integrated circuit out-

performs that of the previous PerkinElmer thermopile modules with discrete components on pcb, be-

cause the A2TPMI features an offset correction of the amplifier and a factory calibrated ambient tem-

perature sensor. This makes the A2TPMI a versatile, compact and high precision device.

Due to the internal digital signal processing and 8 bit resolution of the internal control registers the

A2TPMI has improved accuracy for adjustment and improved performance. E PROM technology allows

unlimited changing of the configuration.

For amplification of the highly sensitive thermopile signal in the micro- to millivolt range, a high resolu-

tion programmable low noise chopper amplifier is provided. An adjustable high precision ambient tem-

perature sensor followed by a signal processor, offers an accurate compensation signal with polynomial

characteristics that perfectly matches to that of the thermopiles output. Adding of these signals results in

an ambient independent object temperature signal over a large temperature range, which still can be

adapted / scaled to customer needs due to flexible offset and postgain adjustment facilities of the de-

vice.

The two configurable comparators of the A2TPMI, that can alternatively be used, enhance the function-

ality. This allows to employ the A2TPMI as an temperature dependent switch for alarm purposes.

Threshold temperatures and the hysteresis is free programmable for both comparators.

Due to integration of sensor and electronic in a compact TO 39 housing, the A2TPMI is robust and

insensitive to environmental influences like pcb contamination (leakage currents), humidity and electro-

magnetic interference.

A2TPMI Datasheet Rev4

Page 2 of 21

Rev. Oct 2003

Datasheet

Examples:

A2TPMI 334-L5.5 OAA 100 and A2TPMI 334-L5.5 OAA 300

A2TPMI

are standard configurations of the PerkinElmer TPS 334 sensor with integrated A2TPMI ASIC and

lens optics with 7° field of view adapted to an object temperature range –20…+100°C and

-20…300°C, respectively.

A2TPMI 334 OAA 140 P1L1 MLG12 J4T

features the PerkinElmer TPS 334 sensor with integrated A2TPMI ASIC on a standard pcb (P1).

An RC circuit serves as a low pass filter to block the chopper frequency. The optics is the standard

left looking mirror with attached protection filter. A 4 pin JST connector with top entry is used. The

object temperature range is set to –20…100°C. Typical module for microwave oven application.)

A2TPMI 334 OAA 60

features the PerkinElmer TPS 334 sensor with integrated A2TPMI ASIC. No additional optics – the

sensor looks with full field of view into the surrounding. The temperature range is –10…60°C. (This

is a typical module for air conditioner application.)

A2TPMI 334 L5.5 OAA 250 P3L2 J6S

features the PerkinElmer TPS 334-L5.5 sensor with integrated A2TPMI ASIC and build-in 5.5 mm

lens on a miniature pcb. It has an additional 2 order low pass filter with operation amplifier to

block the chopper frequency. The connector is a 6 pin side entry connector and the temperature

range is –20…250°C. This is a high performance module for industrial applications. The 6 pin con-

nector gives access to the serial interface of the module.

For data visualization and for configuration changes a versatile application kit with PC software is

available. Please ask for details.

Labeling

Sensor:

SSSS

XYY

HHH

Example:

SSSS

XYYHHH

Last four digits of the device part number

X = Last digit of the calendar year, YY = Week of the calendar year

Serial number of the production lot

Calibration encoding

XYYHHH

PCB Version:

Sensors assembled on a PCB are labeled with a sticker having a letter and a serial number printed on.

The letter describes the manufacturing site as follows:

Production parts made in Germany

Production parts made in Indonesia

Engineering samples

A2TPMI Datasheet Rev4

Page 4 of 21

Rev. Oct 2003

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