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  • L9780 is an IC designed to interface a variety of wide range air fuel sensors.

    The device manages the oxygen pump of the wide range air fuel sensor by means of a voltage controlled current source (VCCS). The reference for the VCCS is generated by a PI controller with external compensation network in order to adapt the device to different sensors. The user can choose between two different networks using the SPI interface. L9780 is fully compatible with most sensors on the market.
    The internal timing state machine automatically manages all the operations needed for a right sequencing of the measurement process. All the main time values can be configured by SPI.
    L9780 drives also an external FET used to control the sensor heater. The device protects the sensor and all the I/O against shorts and provides the diagnosis by SPI.

    Key Features

    • Voltage controlled current source (VCCS) pump cell driver with selectable voltage clamp, offset compensation, diagnostic (short to battery) and 2 output channels
    • Impedance measurement of reference cell
    • 10-bit multiplexed A/D converter
    • Scaling amplifier with sample & hold and offset compensation
    • Control voltage amplifier with sample & hold and offset compensation
    • Synchronous or asynchronous functionality selectable via SPI
    • Heater FET driver with diagnostic (short to battery, short to ground, open circuit)
    • 4 possible levels for clean current
    • SPI with fault detection
    • Digital input and outputs compatible with 5 V or 3.3 V voltage supply
    • 2 channels available to connect compensation networks
    • Short to battery diagnostic on functional ground (pin SR)
    • Short to battery/ground diagnostic on voltage from reference cell (pin INRC)
    • -5 V internal supply
    • 4 MHz internal oscillator
    • Package: 48 pin LQFP
    • Technology: BCD5s_70 V

样片和购买

产品型号
供货状态
数量
预算价格(US$)
封装
包装类型
温度(ºC) ECCN (US)
More info
从分销商订购
从ST订购
min
max
L9780TR
批量生产
1000 3.9 LQFP 48 7x7x1.4 Tape And Reel -40 125 EAR99
MORE INFO

Country of Origin:

-

没有经销商,请联系我们的销售办事处
L9780
批量生产
1000 3.9 LQFP 48 7x7x1.4 Tray -40 125 EAR99
MORE INFO

Country of Origin:

-

没有经销商,请联系我们的销售办事处

L9780TR

供货状态

批量生产

数量

1000

单价(US$)

3.9*

单价(US$)

3.9

封装

LQFP 48 7x7x1.4

包装类型

Tape And Reel

Operating Temperature (°C)

(min)

-40

(max)

125

ECCN (US)

EAR99

Country of Origin

-

L9780

供货状态

批量生产

数量

1000

单价(US$)

3.9*

单价(US$)

3.9

封装

LQFP 48 7x7x1.4

包装类型

Tray

Operating Temperature (°C)

(min)

-40

(max)

125

ECCN (US)

EAR99

Country of Origin

-

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商

Education

This product is labeled Sustainable Technology.

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技术文档

    • 描述 版本 文档大小 操作
      DS10339
      Wide range air fuel sensor control interface
      3.0
      868.4 KB
      PDF
      DS10339

      Wide range air fuel sensor control interface

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产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
L9780
批量生产
LQFP 48 7x7x1.4 汽车 Ecopack2
L9780TR
批量生产
LQFP 48 7x7x1.4 汽车 Ecopack2

L9780

Package:

LQFP 48 7x7x1.4

Material Declaration**:

PDF

Marketing Status

批量生产

Package

LQFP 48 7x7x1.4

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L9780TR

Package:

LQFP 48 7x7x1.4

Material Declaration**:

PDF

Marketing Status

批量生产

Package

LQFP 48 7x7x1.4

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.