Part # LM9044 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM9044 Lambda Sensor Interface Amplifier

Part Details:

LM9044 November 2001 Lambda LM9044Lambda Sensor Interface AmplifierGeneral Description detect open circuit conditions on either or both inputs andforce the output to a "home" position (a ratio of the external Sensor The LM9044 is a precision differential amplifier specifically reference voltage). designed for operation in the automotive environment. Gainaccuracy is guaranteed over the entire automotive tempera- Features ture range (-40°C to +125°C) and is factory trimmed afterpackage assembly. The input circuitry has been specifically n Normal circuit operation guaranteed with inputs up to 3V designed to reject common-mode signals as much as 3V below ground on a single supply. Interface below ground on a single positive power supply. This facili- n Gain factory trimmed and guaranteed over temperature tates the use of sensors which are grounded at the engine (±3% of full-scale from -40°C to +125°C) block while the LM9044 itself is grounded at chassis poten- n Low power consumption (typically 1 mA) tial. An external capacitor sets the maximum operating fre- n Fully protected inputs quency of the amplifier, thereby filtering high frequency tran- n Input open circuit detection sients. Both inputs are protected against accidental shorting n Operation guaranteed over the entire automotive Amplifier to the battery and against load dump transients. The input temperature range (-40°C to +125°C) impedance is typically 1 M. n Single supply operation The output op amp is capable of driving capacitive loads andis fully protected. Also, internal circuitry has been provided to Schematic and Connection Diagrams 00674401 © 2001 National Semiconductor Corporation DS006744 Schematic and Connection Diagrams (Continued) LM9044 Plastic Chip Carrier Package 00674406 Top View Order Number LM9044V See NS Package Number V20A *Pins 1, 3, 4, 6, 8, 9, 10, 11, 13, 14, 16, 18, 19 are trim pins and should be left floating. 2 LM9044 Absolute Maximum Ratings (Note 1) Operating Temperature Range -40°C to +125°C If Military/Aerospace specified devices are required,

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LM9044.pdf Datasheet