LMP8278Q-Q1 Series

AEC-Q100, -2 to 40V, split-stage current sense amplifier w/ in-line filter capability

Catalog

AEC-Q100, -2 to 40V, split-stage current sense amplifier w/ in-line filter capability

Part	Amplifier Type	Number of Circuits	Mounting Type	Current - Output / Channel [custom]	Current - Supply	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case [custom]	Package / Case	Gain Bandwidth Product	Grade	Slew Rate	Current - Input Bias	Qualification	Voltage - Input Offset	Voltage - Supply Span (Min) [Min]	Voltage - Supply Span (Max) [Max]	Utilized IC / Part	Supplied Contents	Board Type	Voltage - Supply, Single/Dual (±) [Min]	Voltage - Supply, Single/Dual (±) [Max]	Channels per IC	Current - Supply (Main IC)	Output Type
Texas Instruments LMP8278QMME/NOPB	Current Sense	1	Surface Mount	10 mA	400 çA	125 °C	-40 °C	8-MSOP 8-TSSOP	0.118 in	3 mm	90 kHz	Automotive	0.7 V/µs	20 pA	AEC-Q100	250 çV	4.5 V	5.5 V
Texas Instruments LMP8278MMEVAL/NOPB	Current Sense			10 mA									0.7 V/µs						LMP8278	Board(s)	Fully Populated	4.5 V	5.5 V	1 - Single	400 µA	Single-Ended
Texas Instruments LMP8278QMM/NOPB	Current Sense	1	Surface Mount	10 mA	400 çA	125 °C	-40 °C	8-MSOP 8-TSSOP	0.118 in	3 mm	90 kHz	Automotive	0.7 V/µs	20 pA	AEC-Q100	250 çV	4.5 V	5.5 V
Texas Instruments LMP8278QMMX/NOPB	Current Sense	1	Surface Mount	10 mA	400 çA	125 °C	-40 °C	8-MSOP 8-TSSOP	0.118 in	3 mm	90 kHz	Automotive	0.7 V/µs	20 pA	AEC-Q100	250 çV	4.5 V	5.5 V

Catalog

AEC-Q100, -2 to 40V, split-stage current sense amplifier w/ in-line filter capability

Key Features

• TCVos ±15μV/°C MaxCMRR 80 dB MinInput Offset Voltage ±2 mV maxCMVR −2V to 40VOperating Ambient Temperature Range −40°C to 125°CSingle Supply OperationMin / Max Limits 100% Tested unless Otherwise NotedLMP8278Q Available in Automotive AEC-Q100 Grade 1 Qualified VersionAll trademarks are the property of their respective owners.TCVos ±15μV/°C MaxCMRR 80 dB MinInput Offset Voltage ±2 mV maxCMVR −2V to 40VOperating Ambient Temperature Range −40°C to 125°CSingle Supply OperationMin / Max Limits 100% Tested unless Otherwise NotedLMP8278Q Available in Automotive AEC-Q100 Grade 1 Qualified VersionAll trademarks are the property of their respective owners.

Description

The LMP8278 is a fixed 14x gain precision current sense amplifier. The part amplifies and filters small differential signals in the presence of high common mode voltages. The part operates from a single 5V supply voltage. With an input common mode voltage range from -2V to +28V the gain is very precise (±0.5%). The part can handle common mode voltages in the range -2V to +40V with relaxed specifications. The LMP8278 is a member of the Linear Monolithic Precision (LMP) family and is ideal for unidirectional current sensing applications. The parameter values that are shown in the Electrical Characteristics table are 100% tested and all bold values are also 100% tested over temperature, unless otherwise noted. The part has a precise gain of 14x which is 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 7x and an output stage buffer amplifier with a gain of 2x. 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 LMP8278Q incorporates enhanced manufacturing and support processes for the automotive market, including defect detection methodologies. Reliability qualification is compliant with the requirements and temperature grades defined in the AEC Q100 standard. The LMP8278 is a fixed 14x gain precision current sense amplifier. The part amplifies and filters small differential signals in the presence of high common mode voltages. The part operates from a single 5V supply voltage. With an input common mode voltage range from -2V to +28V the gain is very precise (±0.5%). The part can handle common mode voltages in the range -2V to +40V with relaxed specifications. The LMP8278 is a member of the Linear Monolithic Precision (LMP) family and is ideal for unidirectional current sensing applications. The parameter values that are shown in the Electrical Characteristics table are 100% tested and all bold values are also 100% tested over temperature, unless otherwise noted. The part has a precise gain of 14x which is 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 7x and an output stage buffer amplifier with a gain of 2x. 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 LMP8278Q incorporates enhanced manufacturing and support processes for the automotive market, including defect detection methodologies. Reliability qualification is compliant with the requirements and temperature grades defined in the AEC Q100 standard.