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Bosch Semiconductors

CJ135

Control and amplifier circuit for wide range oxygen sensors by Bosch, NTK or DENSO

Application & Technical Summary

CJ135

CJ135 is a control and amplifier circuit for the wide range oxygen sensors by Bosch, NTK or DENSO.

CJ135 supports the continuous regulation of Lambda in the range of ʎ= 0.65 to ∞ (air).

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
  • Active blackening control for maximum sensor protection
  • OBD II conformity

Increased accuracy

For increased accuracy - especially in the lean region - the sensor resistance is measured and regulated to keep sensor temperature at a constant level.

Technical Features

Type
Oxygen sensor control & evaluation IC
Package

  • TQFP32ePad
  • QFN36

Features

  • Lambda measurement
  • Probe temperature measurement
  • SPI-programmable controls
  • Diagnostic features

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

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