|Category||Semiconductors => Amplifiers => Instrumentation Amplifiers|
|Part family||INA331 Low-Power, Single Supply, CMOS, Instrumentation Amplifier|
|Description||Low-Power, Single Supply, CMOS, Instrumentation Amplifier 8-VSSOP -55 to 125|
|Company||Texas Instruments, Inc.|
|Datasheet||Download INA331AIDGKR datasheet
|Approx. Price (US$)||0.80 | 1ku|
|Input Bias Current (+/-)(Max)(nA)||0.01|
|Input Offset (+/-)(Max)(uV)||500|
|Noise at 0.1 Hz - 10 Hz(Typ)(uVpp)||7|
|Gain Error (+/-)(Max)(%)||0.1|
|Operating Temperature Range(C)||-55 to 125|
|Bandwidth at Min Gain(Typ)(MHz)||2|
|Number of Channels(#)||1|
|Input Offset Drift (+/-)(Max)(uV/C)||5|
|Noise at 1kHz(Typ)(nV/rt(Hz))||46|
|Gain Non-Linearity (+/-)(Max)(%)||0.1|
|Pin nb||Package type||Ind std||JEDEC code||Package qty||Carrier||Device mark||Width (mm)||Length (mm)||Thick (mm)||Pitch (mm)|
|• Linear operating region of two-op-amp instrumentation amplifiers with gain stage | Doc|
|INA331 PSpice Model (Rev. A) - ZIP (10/04/2011)|
|INA331 TINA-TI Spice Model (Rev. A) - ZIP (10/04/2011)|
DESIGNED FOR LOW COST HIGH GAIN ACCURACY: 0.02%, 2ppm/°C GAIN SET WITH EXT. RESISTORS FOR > 5V/V LOW OFFSET VOLTAGE: ±250µV HIGH CMRR: 94dB DC, at 45kHz LOW BIAS CURRENT: 0.5pA BANDWIDTH, SLEW RATE: 2.0MHz, 5V/µs RAIL-TO-RAIL OUTPUT SWING: (V+) 0.02V WIDE TEMPERATURE RANGE: to +125°C LOW QUIESCENT CURRENT: 490µA max/chan SHUT DOWN: 0.01µA MSOP-8 SINGLE AND TSSOP-14 DUAL PACKAGESAPPLICATIONS
q INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermocouple, Position q PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG q A/D CONVERTER SIGNAL CONDITIONING q DIFFERENTIAL LINE RECEIVERS WITH GAIN q FIELD UTILITY METERS q PCMCIA CARDS q AUDIO AMPLIFIERS q COMMUNICATION SYSTEMS q TEST EQUIPMENT q AUTOMOTIVE INSTRUMENTATION
The INA331 rejects line noise and its harmonics, because common-mode error remains low even at higher frequencies. High bandwidth and slew rate makes the INA331 ideal for directly driving sampling Analog-to-Digital (A/D) converters as well as general-purpose applications. With high precision, low cost, and small packages, the INA331 outperforms discrete designs. Additionally, because they are specified for wide temperature range to +125°C and operating range to +150°C, they can be used in demanding industrial and automotive environments.DESCRIPTION
The INA331 and INA2331 are rail-to-rail output, low-power CMOS instrumentation amplifiers that offer wide range, singlesupply operation as well as bipolar-supply operation. The INA331 family provides low-cost, low-noise amplification of differential signals with a low quiescent current of 415µA (dropping to 0.01µA when shutdown). Returning to normal operation within microseconds, this INA can be used for battery or multi-channel applications. Configured internally in a gain of 5V/V, the INA331 offers flexibility in higher gains by choosing external resistors.
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.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Supply Voltage, V+ to V.................................................................... 7.5V Signal Input Terminals, Voltage(2)..................... (V) 0.5V to (V+) Current(2)..................................................... 10mA Output Short-Circuit(3).............................................................. Continuous Operating Temperature.................................................. to +125°C Storage Temperature...................................................... to +150°C Junction Temperature...................................................................... 150°C Lead Temperature (soldering, 10s)................................................. 300°C NOTES: (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. (2) Input terminals are diode-clamped to the power-supply rails. Input signals that can swing more than 0.5V beyond the supply rails should be current limited 10mA or less. (3) Short-circuit to ground, one amplifier per package.
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.
PACKAGE DESIGNATOR(1) TEMPERATURE RANGE to +125°C SPECIFIED PACKAGE MARKING ORDERING NUMBER TRANSPORT MEDIA, QUANTITYTape and Reel, 250 Tape and Reel, 2500 Tape and Reel, 250 Tape and Reel, 2500
NOTE: (1) For the most current specifications and package information, refer to our web site at www.ti.com.Shutdown A VOUTA REFA V+ REFB VOUTB Shutdown B
Boldface limits apply over the specified temperature range, to 125°C.
= 25, and VREF VS /2, unless otherwise noted. INA331IDGK PARAMETER INPUT Input Offset Voltage, RTI Over Temperature Coefficient vs Power Supply vs Temperature Long-Term Stability Input Impedance Input Common-Mode Range Common-Mode Rejection to +85°C Over Temperature Crosstalk, Dual INPUT BIAS CURRENT Bias Current Offset Current NOISE, RTI Voltage Noise: to 10Hz Current Noise: 1kHz GAIN(1) Gain Equation, Externally Set Range of Gain Error vs Temperature Nonlinearity Over Temperature OUTPUT Output Voltage Swing from Rail(3) Over Temperature Capacitance Load Drive Short-Circuit Current FREQUENCY RESPONSE Bandwidth, 3dB Slew Rate Settling Time, 0.1% 0.01% Overload Recovery POWER SUPPLY Specified Voltage Range Operating Voltage Range Quiescent Current per Channel Over Temperature Shutdown Quiescent Current/Chan TEMPERATURE RANGE Specified Range Operating/Storage Range Thermal Resistance = 2V step 50% Input Overload +2.7 IQ ISD VSD > 2.5(3) VSD to MHz V/µs µA °C °C/W VCM /2 IB IOS to (5R2/R1) V/V % ppm/°C pF mA CONDITION = +5V VOS dVOS/dT PSRR MIN TYP ±250 MAX MIN INA331AIDGK INA2331AIPW TYP MAX ±1000 ±2.1 UNITS µV mV µV/°C µV/V µV/month dB pA nV/Hz µVp-p fA/Hz
Specifications same as INA331IDGK NOTES: (1) Does not include errors from external gain setting resistors. (2) Output voltage swings are measured between the output and power-supply rails. Output swings to rail only G 10. Output does not swing to positive rail if gain is less than 10. (3) See typical characteristic "Percent Overshoot vs Load Capacitance." (4) See typical characteristic "Shutdown Voltage vs Supply Voltage."
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