INA331AIDGKR
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Texas Instruments INA331AIDGKR

Manufacturer No:
INA331AIDGKR
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC INST AMP 1 CIRCUIT 8VSSOP
Delivery:
Payment:
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Product Introduction

Overview

The INA331AIDGKR is a low-power, single-supply, CMOS instrumentation amplifier produced by Texas Instruments. It is part of the INA331 family, which offers wide-range, single-supply operation as well as bipolar-supply operation. This amplifier is designed for low-cost, low-noise amplification of differential signals and is suitable for a variety of applications, including industrial sensor amplifiers, physiological amplifiers, and signal conditioning for A/D converters. The INA331AIDGKR features a low quiescent current of 415µA, which drops to 0.01µA in shutdown mode, making it ideal for battery or multi-channel applications.

Key Specifications

ParameterValue
Package TypeVSSOP-8
Pins8
Operating Temperature Range (°C)-55 to 125
Gain AccuracyG = 5, 0.02%, 2ppm/°C
Offset Voltage±250 µV
Common-Mode Rejection Ratio (CMRR)94dB DC, 50dB at 45kHz
Bias Current0.5pA
Bandwidth2.0MHz
Slew Rate5V/µs
Rail-to-Rail Output Swing(V+) 0.02V
Quiescent Current490 µA max/channel
Shutdown Current0.01 µA

Key Features

  • Designed for low cost and high gain accuracy (G = 5, 0.02%, 2ppm/°C).
  • Gain set with external resistors for gains greater than 5V/V.
  • Low offset voltage: ±250 µV.
  • High CMRR: 94dB DC, 50dB at 45kHz.
  • Low bias current: 0.5pA.
  • High bandwidth and slew rate: 2.0MHz, 5V/µs.
  • Rail-to-rail output swing: (V+) 0.02V.
  • Wide temperature range: -55°C to +125°C.
  • Low quiescent current: 490 µA max/channel, and shutdown current of 0.01 µA.

Applications

  • Industrial sensor amplifiers: Bridge, RTD, Thermocouple, Position.
  • Physiological amplifiers: ECG, EEG, EMG.
  • A/D converter signal conditioning.
  • Differential line receivers with gain.
  • Field utility meters.
  • PCMCIA cards.
  • Audio amplifiers.
  • Communication systems.
  • Test equipment.
  • Automotive instrumentation.

Q & A

  1. What is the package type of the INA331AIDGKR?
    The INA331AIDGKR comes in a VSSOP-8 package.
  2. What is the operating temperature range of the INA331AIDGKR?
    The operating temperature range is -55°C to +125°C.
  3. What is the gain accuracy of the INA331AIDGKR?
    The gain accuracy is G = 5, 0.02%, 2ppm/°C.
  4. What is the offset voltage of the INA331AIDGKR?
    The offset voltage is ±250 µV.
  5. What is the common-mode rejection ratio (CMRR) of the INA331AIDGKR?
    The CMRR is 94dB DC, 50dB at 45kHz.
  6. What is the quiescent current of the INA331AIDGKR?
    The quiescent current is 490 µA max/channel, and it drops to 0.01 µA in shutdown mode.
  7. What are the key applications of the INA331AIDGKR?
    Key applications include industrial sensor amplifiers, physiological amplifiers, A/D converter signal conditioning, differential line receivers, field utility meters, PCMCIA cards, audio amplifiers, communication systems, test equipment, and automotive instrumentation.
  8. How does the INA331AIDGKR handle line noise and its harmonics?
    The INA331AIDGKR rejects line noise and its harmonics because the common-mode error remains low even at higher frequencies.
  9. Is the INA331AIDGKR suitable for driving A/D converters?
    Yes, the INA331AIDGKR is ideal for directly driving sampling Analog-to-Digital (A/D) converters due to its high bandwidth and slew rate.
  10. What is the shutdown current of the INA331AIDGKR?
    The shutdown current is 0.01 µA.

Product Attributes

Amplifier Type:Instrumentation
Number of Circuits:1
Output Type:Rail-to-Rail
Slew Rate:5V/µs
Gain Bandwidth Product:- 
-3db Bandwidth:2 MHz
Current - Input Bias:0.5 pA
Voltage - Input Offset:250 µV
Current - Supply:415µA
Current - Output / Channel:48 mA
Voltage - Supply Span (Min):2.5 V
Voltage - Supply Span (Max):5.5 V
Operating Temperature:-55°C ~ 125°C
Mounting Type:Surface Mount
Package / Case:8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package:8-VSSOP
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Similar Products

Part Number INA331AIDGKR INA331AIDGKT INA333AIDGKR INA332AIDGKR INA331IDGKR INA337AIDGKR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active Active Active
Amplifier Type Instrumentation Instrumentation Instrumentation Instrumentation Instrumentation Instrumentation
Number of Circuits 1 1 1 1 1 1
Output Type Rail-to-Rail Rail-to-Rail Rail-to-Rail Rail-to-Rail Rail-to-Rail -
Slew Rate 5V/µs 5V/µs 0.16V/µs 5V/µs 5V/µs -
Gain Bandwidth Product - - - - - -
-3db Bandwidth 2 MHz 2 MHz 150 kHz 2 MHz 2 MHz 1 kHz
Current - Input Bias 0.5 pA 0.5 pA 70 pA 0.5 pA 0.5 pA 200 pA
Voltage - Input Offset 250 µV 250 µV 10 µV 2 mV 250 µV 20 µV
Current - Supply 415µA 415µA 50µA 415µA 415µA 2.4mA
Current - Output / Channel 48 mA 48 mA 40 mA 48 mA 48 mA 25 mA
Voltage - Supply Span (Min) 2.5 V 2.5 V 1.8 V 2.5 V 2.5 V 2.7 V
Voltage - Supply Span (Max) 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V
Operating Temperature -55°C ~ 125°C -55°C ~ 125°C -40°C ~ 125°C -55°C ~ 125°C -55°C ~ 125°C -40°C ~ 125°C
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package 8-VSSOP 8-VSSOP 8-VSSOP 8-VSSOP 8-VSSOP 8-VSSOP

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