LMP92064SDE/NOPB Part Information

Details for LMP92064SDE/NOPB by Texas Instruments

Semiconductors - ICs > Amplifiers & Comparators > Current Sense Amplifiers

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Part Description

The LMP92064 is a precision low-side digital current sensor and voltage monitor with a digital SPI interface. This analog frontend (AFE) includes a precision current sense amplifier to measure a load current across a shunt resistor and a buffered voltage channel to measure the voltage supply of the load. The current and voltage channels are sampled simultaneously by independent 125-kSps, 12-bit ADC converters, allowing for very accurate power calculations in unidirectional sensing applications. The LMP92064 includes an internal 2.048-V reference for the ADCs, eliminating the need of an external reference and reducing component count and board space. A host can communicate with the LMP92064 using a four-wire SPI interface running at speeds of up to 20 MHz. The fast SPI interface lets the user take advantage of the higher bandwidth ADC to capture fast varying signals. The four-wire interface with dedicated unidirectional input and output lines also allows for an easy interface to digital isolators in applications where isolation is required. The LMP92064 operates from a single 4.5-V to 5.5-V supply and includes a separate digital supply pin. The LMP92064 is specified over a temperature range of –40°C to 105°C, and is available in a 5-mm x 4-mm 16-Pin WSON package.

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Part Features

  • 12-Bit Current Sense Channel u2013 Input-referred Offset: u00b115 u03bcV u2013 Common-mode Voltage Range: u20130.2 V to 2 V u2013 Maximum Differential Input Voltage: 75 mV u2013 Fixed Gain: 25 V/V u2013 Gain Error: u00b10.75% (Maximum) u2013 Bandwidth (u20133dB): 70 kHz u2013 DC PSRR: 100 dB u2013 DC CMRR: 110 dB
  • 12-Bit Voltage Channel u2013 INL: u00b11 LSB u2013 Offset Error: u00b12 mV (Maximum) u2013 Gain Error: u00b10.75% (Maximum) u2013 Maximum Input Voltage: 2.048 V u2013 Bandwidth: 100 kHz
  • 16-Pin WSON Package
  • Internal Reference
  • SPI Frequency: Up to 20 MHz
  • Temperature Range: u201340u00b0C to 105u00b0C
  • Two Simultaneous Sampling 12-Bit ADCs u2013 Conversion Rate: 125 kSps (Minimum)

Part Specifications

No. of Amplifiers 1 Amplifier, 1Amplifiers
Input Bias Current -
Amplifier Case Style WSON
No. of Pins 16Pins
Operating Temperature Min -40°C
Operating Temperature Max 105°C
Bandwidth 70kHz
Supply Voltage Min 4.5V
Supply Voltage Max 5.5V
Input Offset Voltage 15µV
CMRR 110dB
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Supply Current 11mA
RoHS Compliant

Alternative Part Descriptions

  • 2V, 12-bit, fast simultaneous sampling SPI output current/voltage monitor | Texas Instruments

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