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Numéro de sérieINA333
CategorieAnalog & Mixed-Signal Processing => Amplifiers => Instrumentation Amplifiers
DescriptionLow Power, Precision Instrumentation Amplifier
The INA333 is a low-power, precision instrumentationamplifier offering excellent accuracy. The versatile 3-op amp design, small size, and low power make it ideal for a wide range of portable applications.
SociétéTexas Instruments, Inc.
DatasheetTélécharger INA333 datasheet
 
 
  • Description courte

  • FEATURES

    LOW OFFSET VOLTAGE: 25µV (max), G 100 LOW DRIFT: G 100 LOW NOISE: G 100 HIGH CMRR: 100dB (min), G 10 LOW INPUT BIAS CURRENT: 200pA (max) SUPPLY RANGE: to +5.5V INPUT VOLTAGE: (V­) +0.1V to (V+) ­0.1V OUTPUT RANGE: (V­) +0.05V to (V+) ­0.05V LOW QUIESCENT CURRENT: 50µA OPERATING TEMPERATURE: to +125°C RFI FILTERED INPUTS MSOP-8 AND DFN-8 PACKAGES

    DESCRIPTION

    The is a low-power, precision instrumentation amplifier offering excellent accuracy. The versatile 3-op amp design, small size, and low power make it ideal for a wide range of portable applications. A single external resistor sets any gain from to 1000. The INA333 is designed to use an industry-standard gain equation: (100k/RG). The INA333 provides very low offset voltage G 100), excellent offset voltage drift G 100), and high common-mode rejection 10). It operates with power supplies as low 1.8V (±0.9V), and quiescent current is only 50µA--ideal for battery-operated systems. Using autocalibration techniques to ensure excellent precision over the extended industrial temperature range, the INA333 also offers exceptionally low noise density (50nV/Hz) that extends down to dc. The INA333 is available in both MSOP-8 and DFN-8 surface-mount packages and is specified over the to +125°C temperature range.

    APPLICATIONS

    · BRIDGE AMPLIFIERS ECG AMPLIFIERS PRESSURE SENSORS MEDICAL INSTRUMENTATION PORTABLE INSTRUMENTATION WEIGH SCALES THERMOCOUPLE AMPLIFIERS RTD SENSOR AMPLIFIERS DATA ACQUISITION

    7 VIN2 RFI Filtered Inputs A1 1 RFI Filtered Inputs RG 8 RFI Filtered Inputs VIN+ 3 A2 RFI Filtered Inputs

    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. All trademarks are the property of their respective owners.

    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.

    This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

    PRODUCT (1) (2) PACKAGE-LEAD DFN-8 (2) PACKAGE DESIGNATOR DGK DRG PACKAGE MARKING I333 I333A

    For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Available Q4, 2008.

    INA333 Supply voltage Analog input voltage range (2) Output short-circuit

    Operating temperature range, TA Storage temperature range, TA Junction temperature, TJ Human body model (HBM) ESD rating Charged device model (CDM) Machine model (MM) (2) (3)

    Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied. Input terminals are diode-clamped to the power-supply rails. Input signals that can swing more than 0.3V beyond the supply rails should be current limited 10mA or less. Short-circuit to ground.

    Submit Documentation Feedback Product Folder Link(s): INA333

    Boldface limits apply over the specified temperature range, = 10k, VREF = VS/2, and = 1, unless otherwise noted.

    INA333 PARAMETER INPUT (1) Offset voltage, RTI (2) vs Temperature vs Power supply Long-term stability Turn-on time to specified VOSI Impedance Differential Common-mode voltage range Common-mode rejection = 1000 INPUT BIAS CURRENT Input bias current vs Temperature Input offset current vs Temperature INPUT VOLTAGE NOISE Input voltage noise to 10Hz Input current noise to 10Hz GAIN Gain equation Range of gain Gain error = 5.5V, (V­) 100mV VO (V+) (100k/RG) 1000 V/V 100 2 fA/Hz pAPP eNI 100, RS nV/Hz µVPP IOS ±200 pA pA/°C pA pA/°C ZIN VCM CMR to 60Hz VCM = (V­) 0.1V to (V+) ­ 0.1V VCM = (V­) 0.1V to (V+) ­ 0.1V VCM = (V­) 0.1V to (V+) ­ 0.1V VCM = (V­) 0.1V to (V+) 0.1V dB (V­) (V+) pF V PSR ±1 ±5/G See note

    Total VOS, Referred-to-input = (VOSI) + (VOSO/G). RTI = Referred-to-input. 300-hour life test at +150°C demonstrated randomly distributed variation of approximately 1µV.