ZSSC3135BA2R Datasheet ZSSC3135BA2T, ZSSC3135BE2R, ZSSC3135BE2T | P1-P3

Sensor Signal Conditioner for

Piezoresistive Bridge Sensors

ZSSC3135

Datasheet

January 27, 2016

GND

OUT

VCC

Sensor

Module

ZSSC3135

Brief Description

The ZSSC3135 is a member of the ZSSC313x

family of CMOS integrated circuits designed for

automotive/industrial sensor applications. All family

members are well suited for highly accurate amp-

lification and sensor-specific correction of resistive

bridge sensor signals. An internal 16-bit RISC

microcontroller running a correction algorithm

compensates sensor offset, sensitivity, temperature

drift, and non-linearity of the connected sensor

element. The required calibration coefficients are

stored by the one-pass calibration procedure in an

on-chip EEPROM.

The ZSSC3135 is specially designed for piezo-

resistive bridge sensor elements. The amplification

stage with an analog gain of 105 in combination with

optional temperature compensation via an external

temperature sensor meets or exceeds the require-

ments of piezoresistive sensor applications.

Features

• Adjustable to nearly all resistive bridge sensor

types: analog gain of up to 105, maximum overall

gain of 420

• Sample rate up to 200 Hz

• ADC resolution 13/14 bit

• Safety functionality sensor connection

• External temperature sensor

• Digital compensation of sensor offset, sensitivity,

temperature drift, and non-linearity

• Output options: ratiometric analog voltage output

(5 - 95% maximum, 12.4 bit resolution) or

ZACwire™ (digital One-Wire Interface (OWI))

• Sensor biasing by voltage

• High voltage protection up to 33 V

• Supply current: max. 5.5mA

• Reverse polarity and short circuit protection

• Wide operation temperature range:

-40 to +150°C

• Traceability by user-defined EEPROM entries

* Note: I

C™ is a trademark of NXP.

** FSO = Full Scale Output.

Benefits

• Family approach offers the best fitting IC selec-

tion to build cost-optimized applications

• No external trimming components required

• Low number of external components needed

• PC-controlled configuration and one-pass/

end-of-line calibration via I²C™* or ZACwire

interface: simple, cost-efficient, quick, and pre-

cise

• High accuracy: 0.25% FSO** @ -25 to +85°C;

0.5% FSO @ -40 to +125°C

• Optimized for automotive/industrial environments

due to robust protection circuitries, excellent

electromagnetic compatibility and AEC-Q100

qualification

Available Support

• Evaluation Kits

• Application Notes

• Mass Calibration System

Physical Characteristics

• Supply voltage: 4.5 to 5.5 V

• Operation temperature: -40°C to +125°C

(-40°C to +150°C extended temperature range

depending on product version)

• Available in RoHS-compliant JEDEC-SSOP14

package or delivery as die

ZSSC3135 Minimum Application Requirements

Sensor Signal Conditioner for

Piezoresistive Bridge Sensors

ZSSC3135

Datasheet

January 27, 2016

ZSSC3135 Application Example

Serial Interface

Sensor Bridge

SDA

SCL

Out / OWI

GND

SUPP

47nF

+4.5V to +5.5V

ZSSC3135

VDDA

VSSA

SDA

SCL

n.c.

VDD

VDDE

IRTEMP

VBR_T

VBP

VBR_B

VBN

AOUT

VSSE

100nF

Temperature Sensor

Ordering Information (See data sheet section 8 for complete delivery options.)

Product Sales Code Description Package

ZSSC3135BE1 ZSSC3135 die – tested; temperature range -40 to +150°C Unsawn wafer: add “B” to sales code

Die on frame: add “C” to sales code

ZSSC3135BA1 ZSSC3135 die – tested; temperature range -40 to +125°C Unsawn wafer: add “B” to sales code

Die on frame: add “C” to sales code

ZSSC3135BE2 ZSSC3135 SSOP14 – temperature range -40 to +150°C Tube: add “T” to sales code

Tape & Reel: add “R”

ZSSC3135BA2 ZSSC3135 SSOP14 – temperature range -40 to +125°C Tube: add “T” to sales code

Tape & Reel: add “R”

ZSSC313xKITV1.1 ZSSC313x Evaluation Kit, revision 1.1 including Evaluation

Board, ZSSC3135 IC samples, USB cable (software can be

downloaded from the product page www.IDT.com/ZSSC3135)

Kit

ZSSC313x Mass

Calibration System V1.1

Modular Mass Calibration System (MSC) for ZSSC313x

including MCS boards, cable, connectors (software can be

downloaded from the product page www.IDT.com/ZSSC3135)

Kit

Corporate Headquarters

6024 Silver Creek Valley Road

San Jose, CA 95138

www.IDT.com

Sales

1-800-345-7015 or 408-284-8200

Fax: 408-284-2775

www.IDT.com/go/sales

Tech Support

www.IDT.com/go/support

DISCLAIMER Integrated Device Technology, Inc. (IDT) reserves the right to modify the products and/or specifications described herein at any time, without notice, at IDT's sole discretion. Performance

specifications and operating parameters of the described products are determined in an independent state and are not guaranteed to perform the same way when installed in customer products. The

information contained herein is provided without representation or warranty of any kind, whether express or implied, including, but not limited to, the suitability of IDT's products for any particular purpose, an

implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property

rights of IDT or any third parties.

IDT's products are not intended for use in applications involving extreme environmental conditions or in life support systems or similar devices where the failure or malfunction of an IDT product can be

reasonably expected to significantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT.

Integrated Device Technology, IDT and the IDT logo are trademarks or registered trademarks of IDT and its subsidiaries in the United States and other countries. Other trademarks used herein are the

property of IDT or their respective third party owners. For datasheet type definitions and a glossary of common terms, visit www.idt.com/go/glossary

. All contents of this document are copyright of Integrated

ZSSC3135

Datasheet

January 27, 2016

Contents

1 Electrical Characteristics ............................................................................................................................... 5

1.1. Absolute Maximum Ratings .................................................................................................................... 5

1.2. Operating Conditions .............................................................................................................................. 5

1.3. Electrical Parameters ............................................................................................................................. 6

1.3.1. Supply Current and System Operation Conditions .......................................................................... 6

1.3.2. Analog Front-End (AFE) Characteristics ......................................................................................... 6

1.3.3. Temperature Measurement

........................................................................................................... 6

1.3.4. A/D Conversion ................................................................................................................................ 7

1.3.5. Sensor Check ................................................................................................................................... 7

1.3.6. DAC and Analog Output .................................................................................................................. 7

1.3.7. System Response ............................................................................................................................ 8

1.4. Interface Characteristics and EEPROM ................................................................................................. 9

1.4.1. I²C

Interface

............................................................................................................................... 9

1.4.2. ZACwire™ One-Wire Interface (OWI)

.......................................................................................... 9

1.4.3. EEPROM .......................................................................................................................................... 9

2 Circuit Description ....................................................................................................................................... 10

2.1. Signal Flow ........................................................................................................................................... 10

2.2. Application Modes ................................................................................................................................ 11

2.3. Analog Front-End (AFE) ....................................................................................................................... 11

2.3.1. Programmable Gain Amplifier (PGA) ............................................................................................. 11

2.3.2. Offset Compensation ..................................................................................................................... 12

2.3.3. Measurement Cycle ....................................................................................................................... 12

2.3.4. Analog-to-Digital Converter ............................................................................................................ 13

2.4. Temperature Measurement .................................................................................................................. 14

2.5. System Control and Conditioning Calculation ...................................................................................... 14

2.5.1. General Working Modes ................................................................................................................ 14

2.5.2. Startup Phase ............................................................................................................................... 14

2.5.3. Conditioning Calculation ................................................................................................................ 15

2.6. Analog or Digital Output ....................................................................................................................... 15

2.7. Serial Digital Interface .......................................................................................................................... 16

2.8. Failsafe Features .................................................................................................................................. 16

2.9. High Voltage, Reverse Polarity, and Short Circuit Protection .............................................................. 16

3 Application Circuit Examples ....................................................................................................................... 17

4 Pin Configuration and Package ................................................................................................................... 19

5 ESD Protection ............................................................................................................................................ 20

6 Quality and Reliability .................................................................................................................................. 20

7 Customization .............................................................................................................................................. 20

8 Ordering Information ................................................................................................................................... 20

9 Related Documents ..................................................................................................................................... 21

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P23

ZSSC3135BA2R

Mfr. #:

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Manufacturer:

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Description:

Sensor Interface Sensor Signal Conditoner

Lifecycle:

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ZSSC3135BA2R

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