LMP8100_14 Datasheet, PDF (1/30 Pages) Texas Instruments – LMP8100 Programmable Gain Amplifierv

LMP8100
www.ti.com
SNOSAO1B – JULY 2007 – REVISED APRIL 2008
LMP8100 Programmable Gain Amplifier
Check for Samples: LMP8100
FEATURES
1
•23 Typical Values, T_A = 25°C
• Gain error (over temperature range)
– LMP8100A 0.03%
– LMP8100 0.075%
• Gain range 1 to 16 V/V in 1 V/V steps
• Programmable frequency compensation
• Input zero calibration switch
• Input offset voltage (max, LMP8100A) 250 μV
• Input bias current 0.1 pA
• Input noise voltage 12 nV/√Hz
• Unity gain bandwidth 33 MHz
• Slew rate 12 V/μs
• Output current 20 mA
• Supply voltage range 2.7V to 5.5V
• Supply current 5.3 mA
• Rail-to-Rail output swing V⁺ −50 mV to V^− +50
mV
APPLICATIONS
• Industrial instrumentation
• Data acquisition systems
• Test equipment
• Scaling amplifier
• Gain control
• Sensor interface
DESCRIPTION
The LMP8100 programmable gain amplifier features an adjustable gain from 1 to 16 V/V in 1 V/V increments. At
the core of the LMP8100 is a precision, 33 MHz, CMOS input, rail-to-rail input/output operational amplifier with a
typical open-loop gain of 110 dB. Amplifier closed-loop gain is set by an array of precision thin-film resistors.
Amplifier control modes are programmed via a serial port that allows devices to be cascaded so that an array of
LMP8100 amplifiers can be programmed by a single serial data stream. The control mode registers are double
buffered to insure glitch-free transitions between programmed settings. The LMP8100 is part of the LMP™
precision amplifier family and is ideal for a variety of applications.
The amplifier features several programmable controls including: gain; a power-conserving shutdown mode which
can reduce current consumption to only 20 μA; an input zeroing switch which allows the output offset voltage to
be measured to facilitate system calibration; and four levels of internal frequency compensation which can be set
to maximize bandwidth at the different gain settings.
The LMP8100 comes in a 14-Pin SOIC package.
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.
LMP is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
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 © 2007–2008, Texas Instruments Incorporated