下载
LMP8358
www.ti.com
SNOSB09B –APRIL 2010–REVISED MARCH 2013
LMP8358 Zero-Drift, Programmable Instrumentation Amplifier with Diagnostics
Check for Samples: LMP8358
1
FEATURES
DESCRIPTION
The LMP8358 is a precision programmable-gain
23
Typical Values Unless Otherwise Noted, T
A
=
instrumentation amplifier in TI's LMP™ precision
25°C
amplifier family. Its gain can be programmed to 10,
• Supply Voltage 2.7V to 5.5V
20, 50, 100, 200, 500, or 1000 through an SPI-
• Supply Current 1.8 mA
compatible serial interface or through a parallel
interface. Alternatively, its gain can be set to an
• Max Gain Error 0.15%
arbitrary value using two external resistors. The
• Max Gain Drift 16 ppm/°C
LMP8358 uses patented techniques to measure and
• Min CMRR 110 dB
continuously correct its input offset voltage,
eliminating offset drift over time and temperature and
• Max Offset Voltage 10 µV
the effect of 1/f noise. Its ground-sensing CMOS input
• Max Offset Voltage Drift 50 nV/°C
features a high CMRR and low input bias currents. It
• GBW (Gain = 10) 8 MHz
is capable of sensing differential input voltages in a
common-mode range that extends from 100mV below
• Max Non-Linearity 100 ppm
the negative supply to 1.4V below the positive supply,
• Operating Temperature Range −40°C to 125°C
making it an ideal solution for interfacing with ground-
• Input Fault Detection
referenced sensors, supply-referenced sensor
bridges, and any other application requiring precision
• SPI or Pin Configurable Modes
and long-term stability. Additionally, the LMP8358
• EMIRR at 1.8GHz 92 dB
includes fault detection circuitry to detect open and
• 14-Pin SOIC and 14-Pin TSSOP Package
shorted inputs and deteriorating connections to the
signal source. Other features that make the LMP8358
APPLICATIONS
a versatile solution for many applications are its rail-
to-rail output, low input voltage noise and high gain-
• Bridge Sensor Amplifier
bandwidth product.
• Thermopile Amplifier
• Portable Instrumentation
• Medical Instrumentation
• Precision Low-side Current Sensing
1
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.
2LMP is a trademark of Texas Instruments.
3All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
页面指南
