LM9040 - Dual Lambda Sensor Interface Amplifier

Product Overview

National Semiconductor

Datasheet Details

Part number	LM9040
Manufacturer	National Semiconductor
File Size	178.74 KB
Description	Dual Lambda Sensor Interface Amplifier
Datasheet	LM9040 Datasheet
Additional preview pages of the LM9040 datasheet.

Product details

Description

The LM9040 is a dual sensor interface circuit consisting of two independent sampled input differential amplifiers designed for use with conventional Lambda Oxygen Sensors The Lambda Sensor is used for monitoring the oxygen concentration in the exhaust of gasoline engines using catalytic after treatment and will deliver a voltage signal which is dependent on the air-fuel mixture The gain of the amplifiers are internally set and can directly convert the Lambda sensor output voltage to a level suit

Features

Y Y Y Y Y Y Y Y Y Y Single 5V supply operation Common mode input voltage range of g 2V Differential input voltage range of 50 mV to 950 mV Sampled differential input Switched capacitor low pass filter Internal oscillator and VBB generator Open input default operation Cold sensor default operation Low power consumption (42 mW max) Gain set by design and guaranteed over the operating temperature range.

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Published: Apr 25, 2005 |