INA331 Status: ACTIVE

Low-Power, Single Supply, CMOS, Instumentation Amplifier

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Datasheet

Low-Power, Single-Supply, CMOS Instumentation Amplifiers (Rev. C) (ina331.pdf, 531 KB)
04 Apr 2005 Download

	INA2331	INA331
CMRR(Min)(dB)	90	90
Number of Channels	2	1
Pin/Package	14TSSOP	8MSOP
Input Offset (+/-)(Max)(uV)	500	500
Input Offset Drift (+/-)(Max)(uV/Degrees Celsius)	5	5
Input Bias Current (+/-)(Max)(nA)	0.01	0.01
Noise at 1kHz(Typ)(nV/rt(Hz))	46	46
Quiescent Current (+/-)(Typ)(mA)	0.415	0.415
Settling Time to 0.01%(Typ)(us)	2.5	2.5
Gain(V/V)	5 to 1000	5 to 1000
Input Type	CMOS	CMOS
Non-Linearity (+/-)(Max)(%)	0.1	0.1
Bandwidth at G=100(Min)(kHz)	2000	2000
Operating Temp Range(Celsius)	-55 to 125	-55 to 125
Vs(Min)(V)	2.5	2.5
Vs(Max)(V)	5.5	5.5
	Samples	Samples
	Inventory	Inventory

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INA321: Micropower single-supply CMOS Instrumentation Amplifier
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TPS5420: 5.5-V to 36-V, 2-A Step-Down SWIFT(tm) Converter
SN74LVC125A: Quadruple Bus Buffer Gate With 3-State Outputs
ADS7881: 2.7V-5.25V Digital, 5V Analog, 12 Bit, 4MSPS, Parallel ADC with Ref

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Product Information

Features

DESIGNED FOR LOW COST
HIGH GAIN ACCURACY: G = 5, 0.02%, 2ppm/°C
GAIN SET WITH EXT. RESISTORS FOR >5V/V
LOW OFFSET VOLTAGE: ±250 µV
HIGH CMRR: 94dB DC, 50dB 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: –55°C to +125°C
LOW QUIESCENT CURRENT: 490 µA max/chan
SHUT DOWN: 0.01 µA
MSOP-8 SINGLE AND TSSOP-14 DUAL PACKAGES
APPLICATIONS
- INDUSTRIAL SENSOR AMPLIFIERS:
- PHYSIOLOGICAL AMPLIFIERS:
- A/D CONVERTER SIGNAL CONDITIONING
- DIFFERENTIAL LINE RECEIVERS WITH GAIN
- FIELD UTILITY METERS
- PCMCIA CARDS
- AUDIO AMPLIFIERS
- COMMUNICATION SYSTEMS
- TEST EQUIPMENT
- AUTOMOTIVE INSTRUMENTATION

All trademarks are the property of their respective owners.

Description

The INA331 and INA2331 are rail-to-rail output, low-power CMOS instrumentation amplifiers that offer wide range, single-supply 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.

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. They are specified for a wide temperature range of -55°C to +125°C.

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
INA331AIDGKR	ACTIVE	-55 to 125	1.10 \| 1ku	MSOP (DGK) \| 8	View	2500 \| LARGE T&R	Purchase Samples
INA331AIDGKRG4	ACTIVE	-55 to 125	1.10 \| 1ku	MSOP (DGK) \| 8	View	2500 \| LARGE T&R	Purchase Samples
INA331AIDGKT	ACTIVE	-55 to 125	1.25 \| 1ku	MSOP (DGK) \| 8	View	250 \| SMALL T&R
INA331AIDGKTG4	ACTIVE	-55 to 125	1.25 \| 1ku	MSOP (DGK) \| 8	View	250 \| SMALL T&R	Contact TI Distributor or Sales Office
INA331IDGKR	ACTIVE	-55 to 125	1.50 \| 1ku	MSOP (DGK) \| 8	View	2500 \| LARGE T&R	Purchase Samples
INA331IDGKRG4	ACTIVE	-55 to 125	1.50 \| 1ku	MSOP (DGK) \| 8	View	2500 \| LARGE T&R	Purchase Samples
INA331IDGKT	ACTIVE	-55 to 125	1.65 \| 1ku	MSOP (DGK) \| 8	View	250 \| SMALL T&R	Purchase Samples
INA331IDGKTG4	ACTIVE	-55 to 125	1.65 \| 1ku	MSOP (DGK) \| 8	View	250 \| SMALL T&R	Purchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

	TI Inventory Status			Reported Distributor Inventory
INA331AIDGKR	As of 9:08 AM GMT, 15 Oct 2008			As of 9:08 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	8913 \| 20 Jan	16 Weeks	None Reported View Distributors
		889 \| 27 Jan
		691 \| 2 Feb
INA331AIDGKRG4	As of 9:08 AM GMT, 15 Oct 2008			As of 9:08 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	8913 \| 20 Jan	16 Weeks	None Reported View Distributors
		889 \| 27 Jan
		691 \| 2 Feb
INA331AIDGKT	As of 9:08 AM GMT, 15 Oct 2008			As of 9:08 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 20 Jan	16 Weeks	None Reported View Distributors
INA331AIDGKTG4	As of 9:08 AM GMT, 15 Oct 2008			As of 9:08 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 20 Jan	16 Weeks	None Reported View Distributors
INA331IDGKR	As of 9:08 AM GMT, 15 Oct 2008			As of 9:08 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	628 \| 20 Jan	26 Weeks	None Reported View Distributors
	0*	>10k \| 6 Apr	26 Weeks
INA331IDGKRG4	As of 9:08 AM GMT, 15 Oct 2008			As of 9:08 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	628 \| 20 Jan	26 Weeks	None Reported View Distributors
	0*	>10k \| 6 Apr	26 Weeks
INA331IDGKT	As of 9:08 AM GMT, 15 Oct 2008			As of 9:08 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	628 \| 20 Jan	16 Weeks	None Reported View Distributors
		499 \| 30 Mar
		>10k \| 6 Apr
INA331IDGKTG4	As of 9:08 AM GMT, 15 Oct 2008			As of 9:08 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	628 \| 20 Jan	16 Weeks	None Reported View Distributors
		499 \| 30 Mar
		>10k \| 6 Apr
View all Distributors

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
INA331AIDGKR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA331AIDGKRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA331AIDGKT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA331AIDGKTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA331IDGKR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA331IDGKRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA331IDGKT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA331IDGKTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Datasheets

Low-Power, Single-Supply, CMOS Instumentation Amplifiers (Rev. C) (ina331.pdf, 531 KB)
04 Apr 2005 Download

Application Notes

Shelf-Life Evaluation of Lead-Free Component Finishes (szza046.htm, 8 KB)
24 May 2004 Abstract
Thermal and Electrical Properties of Selected Packaging Materials (sbfa010.htm, 8 KB)
04 Oct 2000 Abstract

Simulation Models

Spice Model
- INA331 TINA Macro Model and Test Circuit (sboc173.zip, 20 KB)
  28 Aug 2006 zip
PSpice Model
- INA331 PSpice Macro Model and Test Circuit (sboc014.zip, 6 KB)
  22 Jul 2003 zip

Tools & Software

Name	Part #	Company	Tool / Software Type
Calculate Input Common-Mode Range of Instrumentation Amplifiers	INA-CMV-CALC	Texas Instruments	Calculation Utilities
SPICE-Based Analog Simulation Program	TINA-TI	Texas Instruments	Simulators
MDACBufferPro Output Buffer Amplifier Selection Tool	MDACBUFFERPRO	Texas Instruments	Application Software

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