Features Unless otherwise noted, typical values at TA = 25°C, VS = 5.0V , Gain = 50x (LMP8602), Gain = 100x (LMP8603) TCVos 10μV/°C max CMRR 90 dB min Input offset voltage 1 mV max CMVR at VS = 3.3V −4V to 27V CMVR at VS = 5.0V −22V to 60V Operating ambient temperature range −40°C to 125°C Single supply bidirectional operation All Min / Max limits 100% tested Description The LMP8602 and LMP8603 are fixed gain precision amplifiers. The parts will amplify and filter small differential signals in the presence of high common mode voltages. The input common mode voltage range is –22V to +60V when operating from a single 5V supply. With a 3.3V supply, the input common mode voltage range is from –4V to +27V. The LMP8602 and LMP8603 are members of the Linear Monolithic Precision (LMP ®) family and are ideal parts for unidirectional and bidirectional current sensing applications. All parameter values of the parts that are shown in the tables are 100% tested and all bold values are also 100% tested over temperature. The parts have a precise gain of 50x for the LMP8602 and 100x for the LMP8603, which are adequate in most targeted applications to drive an ADC to its full scale value. The fixed gain is achieved in two separate stages, a preamplifier with a gain of 10x and an output stage buffer amplifier with a gain of 5x for the LMP8602 and 10x for the LMP8603. The connection between the two stages of the signal path is brought out on two pins to enable the possibility to create an additional filter network around the output buffer amplifier. These pins can also be used for alternative configurations with different gain as described in the applications section. The mid-rail offset adjustment pin enables the user to use these devices for bidirectional single supply voltage current sensing. The output signal is bidirectional and mid-rail referenced when this pin is connected to the positive supply rail. With the offset pin connected to ground, the output signal is unidirectional and ground-referenced. The LMP8602 and LMP8603 are available in a 8–Pin SOIC package and in a 8–Pin MSOP package. Applications • High side and low side driver configuration current sensing • Bidirectional current measurement • Current loop to voltage conversion • Automotive fuel injection control • Transmission control • Power steering • Battery management systems

Also Recommended LMP8601▲ Fixed Gain Of 20V/V LMP8602▲ Fixed Gain Of 50V/V LMP8645 Variable Gain 3 typical applications MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

Typical Application click for larger image 3 typical applications	Block Diagram click for larger image Theory of Operation
Typical Performance click for larger image Vos vs. Vcm, Vs=3.3V

Datasheet

Title		Size	Date	Other Language
	LMP8602/LMP8603 60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier	583 Kbytes	17-Jul-09

Featured Application Notes

Title		Size	Date	Other Language
	AN-1923: Application Note 1923 Current Sense Demo Board (SOIC) User`s Guide	3507 Kbytes	29-Apr-09	中文
	AN-1958: Application Note 1958 LMP860X SOIC Evaluation Board User`s Manual	521 Kbytes	4-Aug-09

More Application Notes

Title		Size	Date	Other Language
	AN-1940: Application Note 1940 LMP8601 Evaluation Board User`s Manual	274 Kbytes	6-Feb-09

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LMP8603MA	VIP50CLZ3	0	1755	0	0	315000	12	89382110
LMP8603MAX	VIP50CLZ3	0	1755	0	0	315000	12	89382110
LMP8603MM	VIP50CLZ3	0	1755	0	0	315000	12	89382110
LMP8603MME	VIP50CLZ3	0	1755	0	0	315000	12	89382110
LMP8603MMX	VIP50CLZ3	0	1755	0	0	315000	12	89382110

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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