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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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LM9040 bảng dữ liệu(PDF) 1 Page - National Semiconductor (TI) |
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LM9040 bảng dữ liệu(HTML) 1 Page - National Semiconductor (TI) |
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1 / 10 page  TLH12372 August 1995 LM9040 Dual Lambda Sensor Interface Amplifier General Description The LM9040 is a dual sensor interface circuit consisting of two independent sampled input differential amplifiers de- signed for use with conventional Lambda Oxygen Sensors The Lambda Sensor is used for monitoring the oxygen con- centration in the exhaust of gasoline engines using catalytic after treatment and will deliver a voltage signal which is de- pendent on the air-fuel mixture The gain of the amplifiers are internally set and can directly convert the Lambda sen- sor output voltage to a level suitable for AD conversion in a system using a 5V reference The input common mode voltage range of each amplifier is g 2V with respect to the IC ground pin This will allow the IC to connect to sensors which are remotely grounded at the engine exhaust manifold or exhaust pipe Each amplifier is capable of independent default operation should either or both of the leads to a sensor become open circuited Noise filtering is provided by an internal switched capacitor low pass filter as part of each amplifier and by external components The LM9040 is fully specified over the automotive tempera- ture range of b40 Cto a125 C and is provided in a 14-pin Small Outline surface mount package Features Y Single 5V supply operation Y Common mode input voltage range of g2V Y Differential input voltage range of 50 mV to 950 mV Y Sampled differential input Y Switched capacitor low pass filter Y Internal oscillator and VBB generator Y Open input default operation Y Cold sensor default operation Y Low power consumption (42 mW max) Y Gain set by design and guaranteed over the operating temperature range Applications Y Closed loop emissions control Y Catalytic converter monitoring Connection Diagram TLH12372 – 1 Top View Ordering Information LM9040M See NS Package Number M14B C1995 National Semiconductor Corporation RRD-B30M115Printed in U S A |
Số phần tương tự - LM9040 |
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Mô tả tương tự - LM9040 |
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