LMP8358 Datasheet, PDF (1/40 Pages) National Semiconductor (TI) – Zero-Drift, Programmable Instrumentation Amplifier with Diagnostics

LMP8358
www.ti.com
SNOSB09B – APRIL 2010 – REVISED MARCH 2013
LMP8358 Zero-Drift, Programmable Instrumentation Amplifier with Diagnostics
Check for Samples: LMP8358
FEATURES
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23Typical Values Unless Otherwise Noted, T_A =
25°C
• Supply Voltage 2.7V to 5.5V
• Supply Current 1.8 mA
• Max Gain Error 0.15%
• Max Gain Drift 16 ppm/°C
• Min CMRR 110 dB
• Max Offset Voltage 10 µV
• Max Offset Voltage Drift 50 nV/°C
• GBW (Gain = 10) 8 MHz
• Max Non-Linearity 100 ppm
• Operating Temperature Range −40°C to 125°C
• Input Fault Detection
• SPI or Pin Configurable Modes
• EMIRR at 1.8GHz 92 dB
• 14-Pin SOIC and 14-Pin TSSOP Package
APPLICATIONS
• Bridge Sensor Amplifier
• Thermopile Amplifier
• Portable Instrumentation
• Medical Instrumentation
• Precision Low-side Current Sensing
DESCRIPTION
The LMP8358 is a precision programmable-gain
instrumentation amplifier in TI's LMP™ precision
amplifier family. Its gain can be programmed to 10,
20, 50, 100, 200, 500, or 1000 through an SPI-
compatible serial interface or through a parallel
interface. Alternatively, its gain can be set to an
arbitrary value using two external resistors. The
LMP8358 uses patented techniques to measure and
continuously correct its input offset voltage,
eliminating offset drift over time and temperature and
the effect of 1/f noise. Its ground-sensing CMOS input
features a high CMRR and low input bias currents. It
is capable of sensing differential input voltages in a
common-mode range that extends from 100mV below
the negative supply to 1.4V below the positive supply,
making it an ideal solution for interfacing with ground-
referenced sensors, supply-referenced sensor
bridges, and any other application requiring precision
and long-term stability. Additionally, the LMP8358
includes fault detection circuitry to detect open and
shorted inputs and deteriorating connections to the
signal source. Other features that make the LMP8358
a versatile solution for many applications are its rail-
to-rail output, low input voltage noise and high gain-
bandwidth product.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
LMP is a trademark of Texas Instruments.
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All other trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010–2013, Texas Instruments Incorporated