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PW PACKAGE

(TOP VIEW)

Vdd

DGnd

DI

DO

TST2

TST1

TST0

ProgV

Vcc

VccA

Gnd

REF1

GndA

SIP

Gnd

SIN

TPIC83000-Q1

www.ti.com

SLDS171 – NOVEMBER 2009

PRESSURE SENSOR SIGNAL CONDITIONING INTERFACE

Check for Samples: TPIC83000-Q1

1

FEATURES

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Qualified for Automotive Applications

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10-Bit Pressure and Temperature Output

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On-Board Temperature Sensor

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Programmable Gain / Gain TC1

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Programmable Offset / Offset TC1 / TC2

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On-Board EEPROM for System Calibration

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Operating Temperature Range: –40°C to 85°C

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16-Pin TSSOP (PW) Package

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UART Interface

APPLICATIONS

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Occupancy Weight Sensing

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Pedal-Pressure Sensing

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General Low-Pressure Sensing

DESCRIPTION

The TPIC83000 is a single-channel, signal conditioning device for pressure sensors used in low-pressure

sensing applications such as passenger occupancy indication/detection and pedal pressure sensing. The

pressure sensor can be based on either a strain gauge or piezo-resistive elements configured as a full

Wheatstone bridge. This device provides an analog signal conditioning interface between the pressure sensor

and a microcontroller. The analog front end (AFE) inside the device processes the sensed signals from the

pressure sensor by amplifying the signal and cancelling offset. This processed signal is then converted into a

14-bit, digital word using a sigma-delta analog-to-digital converter (ADC). The device also has a built-in 12-bit

ADC that is used to sense ambient temperature to compensate for the temperature coefficient of the sensor and

related processing circuitry. The compensated digital data is transferred to the microprocessor via a built-in

UART interface.

ORDERABLE PART NUMBER

TOP-SIDE MARKING

–40°C to 85°C

TSSOP – PW

Reel of 2000

TPIC83000IPWRQ1

TPIC83000I

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2)

Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.