INA321 Status:ACTIVE

Micropower single-supply CMOS Instrumentation Amplifier

Burr-Brown

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Datasheet

microPower Single-Supply CMOS Instrumentation Amplifier (Rev. D) (ina321.pdf, 501 KB)
31 Jan 2006 Download

	INA2321	INA321
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)	7	7
Input Bias Current (+/-)(Max)(nA)	0.01	0.01
Noise at 1kHz(Typ)(nV/rt(Hz))	100	100
Quiescent Current (+/-)(Typ)(mA)	0.04	0.04
Settling Time to 0.01%(Typ)(us)	12	12
Gain(V/V)	5 to 1000	5 to 1000
Input Type	CMOS	CMOS
Non-Linearity (+/-)(Max)(%)	0.01	0.01
Bandwidth at G=100(Min)(kHz)	50	50
Operating Temp Range(Celsius)		-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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BQ24032A: Dual Input Li-Ion Charger with Dynamic Power Path, Output regulated to 4.4V, Vbat 4.2V
TPS76801: Single Output LDO, 1.0A, Adj.(1.5 to 5.5V), Low Quiescent Current, Fast Transient Response

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Product Information

Features

LOW QUIESCENT CURRENT: 40µA/channel Shut Down: < 1µA
HIGH GAIN ACCURACY: G = 5, 0.02%, 2ppm/°C
GAIN SET WITH EXTERNAL RESISTORS
LOW OFFSET VOLTAGE: ±200µV
HIGH CMRR: 94dB
LOW BIAS CURRENT: 10pA
BANDWIDTH: 500kHz, G = 5V/V
RAIL-TO-RAIL OUTPUT SWING: (V+) - 0.02V
WIDE TEMPERATURE RANGE: -55°C to +125°C
SINGLE VERSION IN MSOP-8 PACKAGE AND DUAL VERSION IN TSSOP-14 PACKAGE
APPLICATIONS
- INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermistor, Position
- PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG
- A/D CONVERTER SIGNAL CONDITIONING
- DIFFERENTIAL LINE RECEIVERS WITH GAIN
- FIELD UTILITY METERS
- PCMCIA CARDS
- COMMUNICATION SYSTEMS
- TEST EQUIPMENT
- AUTOMOTIVE INSTRUMENTATION

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Description

The INA321 family is a series of rail-to-rail output, micropower CMOS instrumentation amplifiers that offer wide-range, single-supply, as well as bipolar-supply operation. The INA321 family provides low-cost, low-noise amplification of differential signals with micropower current consumption of 40µA. When shutdown, the INA321 has a quiescent current of less than 1µA. Returning to normal operations within nanoseconds, the shutdown feature makes the INA321 optimal for low-power battery or multiplexing applications.

Configured internally for 5V/V gain, the INA321 offers exceptional flexibility with user-programmable external gain resistors. The INA321 reduces common-mode error over frequency and with CMRR remaining high up to 3kHz, line noise and line harmonics are rejected.

The low-power design does not compromise on bandwidth or slew rate, making the INA321 ideal for driving sample Analog-to-Digital (A/D) converters as well as general-purpose applications. With high precision, low cost, and small packaging, the INA321 outperforms discrete designs, while offering reliability and performance.

Pricing / Packaging / CAD Design Tools / Samples

			Price ($US)	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price ($US) \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
INA321E/250	ACTIVE	-55 to 125	1.65 \| 1ku	MSOP (DGK) \| 8	View	250 \| SMALL T&R	Purchase Samples
INA321E/250G4	ACTIVE	-55 to 125	1.65 \| 1ku	MSOP (DGK) \| 8	View	250 \| SMALL T&R	Purchase Samples
INA321E/2K5	ACTIVE	-55 to 125	1.50 \| 1ku	MSOP (DGK) \| 8	View	2500 \| LARGE T&R
INA321E/2K5G4	ACTIVE	-55 to 125	1.50 \| 1ku	MSOP (DGK) \| 8	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
INA321EA/250	ACTIVE	-55 to 125	1.20 \| 1ku	MSOP (DGK) \| 8	View	250 \| SMALL T&R
INA321EA/250G4	ACTIVE	-55 to 125	1.20 \| 1ku	MSOP (DGK) \| 8	View	250 \| SMALL T&R	Contact TI Distributor or Sales Office
INA321EA/2K5	ACTIVE	-55 to 125	1.10 \| 1ku	MSOP (DGK) \| 8	View	2500 \| LARGE T&R	Purchase Samples
INA321EA/2K5G4	ACTIVE	-55 to 125	1.10 \| 1ku	MSOP (DGK) \| 8	View	2500 \| LARGE 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
INA321E/250	As of 8:52 AM GMT, 20 Aug 2008			As of 8:52 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 26 Nov	16 Weeks	Americas	DigiKey	>1k
					Mouser Electronics	868
					Newark	695
INA321E/250G4	As of 8:52 AM GMT, 20 Aug 2008			As of 8:52 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 26 Nov	16 Weeks	None Reported View Distributors
INA321E/2K5	As of 8:52 AM GMT, 20 Aug 2008			As of 8:52 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 26 Nov	16 Weeks	Americas	Mouser Electronics	>1k
	0*		16 Weeks	Asia	WPI	>1k
INA321E/2K5G4	As of 8:52 AM GMT, 20 Aug 2008			As of 8:52 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 26 Nov	16 Weeks	None Reported View Distributors
INA321EA/250	As of 8:52 AM GMT, 20 Aug 2008			As of 8:52 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 26 Nov	16 Weeks	Americas	DigiKey	>1k
				Americas	Mouser Electronics	789
				Asia	WPI	41
				Europe	Avnet-SILICA	>1k
INA321EA/250G4	As of 8:52 AM GMT, 20 Aug 2008			As of 8:52 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 26 Nov	16 Weeks	Europe	Farnell	408
INA321EA/2K5	As of 8:52 AM GMT, 20 Aug 2008			As of 8:52 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 26 Nov	16 Weeks	None Reported View Distributors
INA321EA/2K5G4	As of 8:52 AM GMT, 20 Aug 2008			As of 8:52 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 26 Nov	16 Weeks	None Reported View Distributors
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
INA321E/250	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA321E/250G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA321E/2K5	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA321E/2K5G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA321EA/250	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA321EA/250G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA321EA/2K5	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
INA321EA/2K5G4	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

microPower Single-Supply CMOS Instrumentation Amplifier (Rev. D) (ina321.pdf, 501 KB)
31 Jan 2006 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
- INA321 PSpice Macro Model and Test Circuit (sboc009.zip, 3 KB)
  11 Jun 2003 zip
- INA321 TINA Macro Model and Test Circuit (sboc167.zip, 18 KB)
  28 Aug 2006 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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