Product details

Number of channels 1 Vs (max) (V) 5.5 Vs (min) (V) 2.7 Input offset (±) (max) (µV) 100 Voltage gain (min) (V/V) 0.1 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 33 Features Cost Optimized CMRR (min) (dB) 100 Input offset drift (±) (max) (µV/°C) 0.4 Input bias current (±) (max) (nA) 2 Iq (typ) (mA) 2.4 Bandwidth at min gain (typ) (MHz) 0.001 Gain error (±) (max) (%) 0.2 Operating temperature range (°C) -40 to 85 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.01 Output swing headroom (to negative supply) (typ) (V) 0.005 Output swing headroom (to positive supply) (typ) (V) -0.005 Input common mode headroom (to negative supply) (typ) (V) -0.02 Input common mode headroom (to positive supply) (typ) (V) 0.1 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.8
Number of channels 1 Vs (max) (V) 5.5 Vs (min) (V) 2.7 Input offset (±) (max) (µV) 100 Voltage gain (min) (V/V) 0.1 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 33 Features Cost Optimized CMRR (min) (dB) 100 Input offset drift (±) (max) (µV/°C) 0.4 Input bias current (±) (max) (nA) 2 Iq (typ) (mA) 2.4 Bandwidth at min gain (typ) (MHz) 0.001 Gain error (±) (max) (%) 0.2 Operating temperature range (°C) -40 to 85 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.01 Output swing headroom (to negative supply) (typ) (V) 0.005 Output swing headroom (to positive supply) (typ) (V) -0.005 Input common mode headroom (to negative supply) (typ) (V) -0.02 Input common mode headroom (to positive supply) (typ) (V) 0.1 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.8
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm)
  • PRECISION
       LOW OFFSET: 100 µV (max)
       LOW OFFSET DRIFT: 0.4 µV/°C (max)
       EXCELLENT LONG-TERM STABILITY
       VERY-LOW 1/f NOISE
  • TRUE RAIL-TO-RAIL I/O
       INPUT COMMON-MODE RANGE:
          20mV Below Negative Rail to 100mV Above Positive Rail
       WIDE OUTPUT SWING: Within 10mV of Rails
       SUPPLY RANGE: Single +2.7V to +5.5V
  • SMALL SIZE
       microPACKAGE: MSOP-8, MSOP-10
  • LOW COST
  • APPLICATIONS
    • LOW-LEVEL TRANSDUCER AMPLIFIER FOR BRIDGES, LOAD CELLS, THERMOCOUPLES
    • WIDE DYNAMIC RANGE SENSOR MEASUREMENTS
    • HIGH-RESOLUTION TEST SYSTEMS
    • WEIGH SCALES
    • MULTI-CHANNEL DATA ACQUISITION SYSTEMS
    • MEDICAL INSTRUMENTATION
    • GENERAL-PURPOSE

  • PRECISION
       LOW OFFSET: 100 µV (max)
       LOW OFFSET DRIFT: 0.4 µV/°C (max)
       EXCELLENT LONG-TERM STABILITY
       VERY-LOW 1/f NOISE
  • TRUE RAIL-TO-RAIL I/O
       INPUT COMMON-MODE RANGE:
          20mV Below Negative Rail to 100mV Above Positive Rail
       WIDE OUTPUT SWING: Within 10mV of Rails
       SUPPLY RANGE: Single +2.7V to +5.5V
  • SMALL SIZE
       microPACKAGE: MSOP-8, MSOP-10
  • LOW COST
  • APPLICATIONS
    • LOW-LEVEL TRANSDUCER AMPLIFIER FOR BRIDGES, LOAD CELLS, THERMOCOUPLES
    • WIDE DYNAMIC RANGE SENSOR MEASUREMENTS
    • HIGH-RESOLUTION TEST SYSTEMS
    • WEIGH SCALES
    • MULTI-CHANNEL DATA ACQUISITION SYSTEMS
    • MEDICAL INSTRUMENTATION
    • GENERAL-PURPOSE

The INA326 and INA327 (with shutdown) are high-performance, low-cost, precision instrumentation amplifiers with rail-to-rail input and output. They are true single-supply instrumentation amplifiers with very low DC errors and input common-mode ranges that extends beyond the positive and negative rails. These features make them suitable for applications ranging from general-purpose to high-accuracy.

Excellent long-term stability and very low 1/f noise assure low offset voltage and drift throughout the life of the product.

The INA326 (without shutdown) comes in the MSOP-8 package. The INA327 (with shutdown) is offered in an MSOP-10. Both are specified over the industrial temperature range, –40°C to +85°C, with operation from –40°C to +125°C.

The INA326 and INA327 (with shutdown) are high-performance, low-cost, precision instrumentation amplifiers with rail-to-rail input and output. They are true single-supply instrumentation amplifiers with very low DC errors and input common-mode ranges that extends beyond the positive and negative rails. These features make them suitable for applications ranging from general-purpose to high-accuracy.

Excellent long-term stability and very low 1/f noise assure low offset voltage and drift throughout the life of the product.

The INA326 (without shutdown) comes in the MSOP-8 package. The INA327 (with shutdown) is offered in an MSOP-10. Both are specified over the industrial temperature range, –40°C to +85°C, with operation from –40°C to +125°C.

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Technical documentation

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* Data sheet INA326, 327: Precision, Rail-To-Rail I/O Instrumentation Amplifier datasheet (Rev. D) Nov 3, 2004
Application note Low-level voltage-to-current converter circuit (Rev. A) PDF | HTML Oct 10, 2024
Application note Designing Temperature Monitoring Systems with NTC and RTD PDF | HTML May 15, 2024
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML Jul 27, 2021
Circuit design 3-decade, load-current sensing circuit (Rev. A) PDF | HTML Feb 1, 2019
E-book The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML Mar 28, 2017
Analog design Journal Q4 2008 Issue Analog Applications Journal Oct 22, 2008
Analog design Journal A dual-polarity, bidirectional current-shunt monitor Oct 22, 2008
Application note Low-Cost Noise-Immune Isolated Thermocouple Signal Processor Jan 8, 2007
Analog design Journal Getting the most out of your instrumentation amplifier design Oct 10, 2005

Design & development

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VSSOP (DGK) 8 Ultra Librarian

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