Icon--AD-black-48x48Icon--address-consumer-data-black-48x48Icon--appointment-black-48x48Icon--back-left-black-48x48Icon--calendar-black-48x48Icon--Checkbox-checkIcon--clock-black-48x48Icon--close-black-48x48Icon--compare-black-48x48Icon--confirmation-black-48x48Icon--dealer-details-black-48x48Icon--delete-black-48x48Icon--delivery-black-48x48Icon--down-black-48x48Icon--download-black-48x48Ic-OverlayAlertIcon--externallink-black-48x48Icon-Filledforward-right_adjustedIcon--grid-view-black-48x48Icon--info-i-black-48x48Icon--Less-minimize-black-48x48Icon-FilledIcon--List-Check-blackIcon--List-Cross-blackIcon--list-view-mobile-black-48x48Icon--list-view-black-48x48Icon--More-Maximize-black-48x48Icon--my-product-black-48x48Icon--newsletter-black-48x48Icon--payment-black-48x48Icon--print-black-48x48Icon--promotion-black-48x48Icon--registration-black-48x48Icon--Reset-black-48x48share-circle1Icon--share-black-48x48Icon--shopping-cart-black-48x48Icon--start-play-black-48x48Icon--store-locator-black-48x48Ic-OverlayAlertIcon--summary-black-48x48tumblrIcon-FilledvineIc-OverlayAlertwhishlist
Bosch Semiconductors

CJ138

Oxygen sensor control and evaluation IC

Application & Technical Summary

CJ138

CJ138 controls one and two cell linear oxygen sensors inside an engine control unit (ECU) for Gasoline or Diesel engines.

The IC has unique features to interface with various sensors by configuring the corresponding registers. It also supports the required sensor pin diagnosis for engine control applications.

Product benefits

  • Pump current control and measurement
  • Lambda measurement result via SPI interface
  • Nernst cell reference voltage source
  • Extended sensor cell impedance measurement for temperature control
  • OBD II conformity
  • UART interface for cylinder imbalancement measurement
  • Sensor type selectable via software
  • Pin pointing diagnosis for detection of open load, short circuit to GND, short circuit to VBatt

1 and 2 cell linear oxygen sensor support

adaptable to various sensors by software

Technical Features

Type
Oxygen sensor control & evaluation IC
Package

  • TQFP32_ePad

Features

  • Differential inputs
  • Selectable thresholds
  • Open drain output
  • Pin pointing diagnosis: Open load, short circuit to GND,short xcircuit to VBatt

Oxgen sensor type

  • Bosch LSU5.2 / 4.9 / ADV
  • NTK ZFAS-U2 / U3
  • Denso Plus 5 / 6

Interface
SPI
Tj min [°C]
-40°C
Tj max [°C]
150°C

Download

Product information

Share this on:

Get in touch with us

Conact