INA128 Status: ACTIVE

Precision, Low Power Instrumentation Amplifiers

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Datasheet

Precision, Low Power Instrumentation Amplifiers (Rev. B) (PDF 1487 KB)
24 Feb 2005

	INA128	INA129
Gain(V/V)	1 to 10000	1 to 10000
Non-Linearity (+/-)(Max)(%)	0.012	0.002
Input Bias Current (+/-)(Max)(nA)	5	5
Output Offset (+/-)(Max)(uV)		500/G
Input Offset Drift (+/-)(Max)(uV/Degrees Celsius)	0.5	0.5
Output Offset Drift (+/-)(Max)(uV/Degrees Celsius)	20/G	20/G
CMRR(Min)(dB)	120	120
Bandwidth at G=100(Min)(kHz)	200	200
Noise at 1kHz(Typ)(nV/rt(Hz))	8	8
Vs(Min)(V)	4.5	4.5
Vs(Max)(V)	36	36
Quiescent Current (+/-)(Typ)(mA)	0.7	0.7
Pin/Package	8PDIP, 8SOIC	8PDIP, 8SOIC
	Samples	Samples
	Inventory	Inventory

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INA122: Single Supply, MicroPower Instrumentation Amplifier

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Product Information

Features

LOW OFFSET VOLTAGE: 50µV max
LOW DRIFT: 0.5µV/°C max
LOW INPUT BIAS CURRENT: 5nA max
HIGH CMR: 120dB min
INPUTS PROTECTED TO ±40V
WIDE SUPPLY RANGE: ±2.25V to ±18V
LOW QUIESCENT CURRENT: 700µA
8-PIN PLASTIC DIP, SO-8
APPLICATIONS
- BRIDGE AMPLIFIER
- THERMOCOUPLE AMPLIFIER
- RTD SENSOR AMPLIFIER
- MEDICAL INSTRUMENTATION
- DATA ACQUISITION

All trademarks are the property of their respective owners.

Description

The INA128 and INA129 are low power, general purpose instrumentation amplifiers offering excellent accuracy. The versatile 3-op amp design and small size make them ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200kHz at G = 100).

A single external resistor sets any gain from 1 to 10,000. The INA128 provides an industry-standard gain equation; the INA129 gain equation is compatible with the AD620.

The INA128/INA129 is laser trimmed for very low offset voltage (50µV), drift (0.5µV/°C) and high common-mode rejection (120dB at G ≥ 100). It operates with power supplies as low as ±2.25V, and quiescent current is only 700µA—ideal for battery-operated systems. Internal input protection can withstand up to ±40V without damage.

The INA128/INA129 is available in 8-pin plastic DIP and SO-8 surface-mount packages, specified for the –C40°C to +85°C temperature range. The INA128 is also available in a dual configuration, the INA2128.

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
INA128P	ACTIVE		4.95 \| 1ku	PDIP (P) \| 8	View	50 \| TUBE
INA128PA	ACTIVE		3.05 \| 1ku	PDIP (P) \| 8	View	50 \| TUBE
INA128PAG4	ACTIVE		3.05 \| 1ku	PDIP (P) \| 8	View	50 \| TUBE
INA128PG4	ACTIVE		4.95 \| 1ku	PDIP (P) \| 8	View	50 \| TUBE
INA128U	ACTIVE		5.40 \| 1ku	SOIC (D) \| 8	View	75 \| TUBE
INA128U/2K5	ACTIVE		4.95 \| 1ku	SOIC (D) \| 8	View	2500 \| LARGE T&R	Purchase Samples
INA128U/2K5G4	ACTIVE		4.95 \| 1ku	SOIC (D) \| 8	View	2500 \| LARGE T&R	Purchase Samples
INA128UA	ACTIVE	-40 to 125	3.40 \| 1ku	SOIC (D) \| 8	View	75 \| TUBE
INA128UA/2K5	ACTIVE	-40 to 125	3.05 \| 1ku	SOIC (D) \| 8	View	2500 \| LARGE T&R	Purchase Samples
INA128UA/2K5E4	ACTIVE	-40 to 125	3.05 \| 1ku	SOIC (D) \| 8	View	2500 \| LARGE T&R	Purchase Samples
INA128UA/2K5G4	ACTIVE	-40 to 125	3.05 \| 1ku	SOIC (D) \| 8	View	2500 \| LARGE T&R	Purchase Samples
INA128UAE4	ACTIVE	-40 to 125	3.40 \| 1ku	SOIC (D) \| 8	View	75 \| TUBE
INA128UAG4	ACTIVE	-40 to 125	3.40 \| 1ku	SOIC (D) \| 8	View	75 \| TUBE
INA128UG4	ACTIVE		5.40 \| 1ku	SOIC (D) \| 8	View	75 \| TUBE
SN412014DRE4	ACTIVE	-40 to 125	3.05 \| 1ku	SOIC (D) \| 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

Reported Distributor Inventory as of 11:48 AM GMT, 06 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksINA128P
Americas	Arrow	381
	Avnet	19
	Newark	161
Asia	Farnell Asia	>1k
Asia	WPI	172
Europe	Farnell	294
Europe	Spoerle	45
Worldwide	DigiKey	425
Worldwide	Mouser Electronics	166
TI Lead Time*: 20 WeeksINA128PA
Americas	Arrow	5
Americas	Newark	242
Asia	Farnell Asia	688
Asia	WPI	568
Europe	Compel	714
	Farnell	561
	Spoerle	200
Worldwide	DigiKey	387
Worldwide	Mouser Electronics	523
TI Lead Time*: 20 WeeksINA128PAG4
Europe	EBV Elektronik	650
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksINA128PG4
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	122
TI Lead Time*: 20 WeeksINA128U
Americas	Newark	71
Americas	Rochester Electronics	50
Asia	Farnell Asia	173
Europe	Abacus Polar	49
	Arrow Southern Europe	25
	Avnet-SILICA	>1k
	Compel	332
	EBV Elektronik	300
	Farnell	72
	Spoerle	329
Worldwide	DigiKey	7
TI Lead Time*: 20 WeeksINA128U/2K5
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksINA128U/2K5G4
Worldwide	DigiKey	Available
TI Lead Time*: 4 WeeksINA128UA
Americas	Arrow	>1k
Americas	Newark	>1k
Asia	WPI	196
Europe	Abacus Polar	36
	Arrow Northern Europe	25
	Arrow Southern Europe	750
	Avnet-SILICA	>1k
	Compel	753
	Spoerle	50
Worldwide	DigiKey	>1k
Worldwide	Mouser Electronics	292
TI Lead Time*: 4 WeeksINA128UA/2K5
Americas	Avnet	>1k
Americas	Rochester Electronics	>1k
Europe	Avnet-SILICA	>1k
Worldwide	DigiKey	Available
TI Lead Time*: 4 WeeksINA128UA/2K5E4
Worldwide	DigiKey	Available
TI Lead Time*: 4 WeeksINA128UA/2K5G4
Worldwide	DigiKey	Available
TI Lead Time*: 4 WeeksINA128UAE4
Americas	Arrow	28
Asia	Farnell Asia	>1k
Europe	Farnell	>1k
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	44
TI Lead Time*: 4 WeeksINA128UAG4
Americas	Avnet	10
Europe	EBV Elektronik	>1k
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	71
TI Lead Time*: 20 WeeksINA128UG4
Worldwide	DigiKey	Available
TI Lead Time*: 4 WeeksSN412014DRE4
None Reported View Distributors
View all Distributors

** 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
INA128P	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	View	View
INA128PA	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	View	View
INA128PAG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	View	View
INA128PG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	View	View
INA128U	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
INA128U/2K5	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
INA128U/2K5G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
INA128UA	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
INA128UA/2K5	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
INA128UA/2K5E4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
INA128UA/2K5G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
INA128UAE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
INA128UAG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
INA128UG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
SN412014DRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	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

Most useful technical documents for INA128

Datasheet

Precision, Low Power Instrumentation Amplifiers (Rev. B) (PDF, 1487 KB)
24 Feb 2005

Application Notes

Thermal and Electrical Properties of Selected Packaging Materials (HTM, 8 KB) 15663 views
04 Oct 2000 Read Abstract
Shelf-Life Evaluation of Lead-Free Component Finishes (HTM, 8 KB) 26941 views
24 May 2004 Read Abstract
Getting the most out of your instrumentation amplifier design (PDF, 177 KB) 22704 views
10 Oct 2005

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(TM) Output Buffer Amplifier Selection Tool	MDACBUFFERPRO	Texas Instruments	Application Software
INA Common-Mode-Range Design Utility(ZIP 77 KB ) 5091 views 14 Apr 2003

Simulation Models

PSpice Model
- INAy128 PSpice Model (ZIP, 8 KB) 997 views
  25 Oct 2000
TINA-TI Spice Model
- INA128 TINA-TI Spice Model (TSM, 10 KB) 124 views
  19 Jan 2009
TINA-TI Reference Design
- INA128 TINA-TI Reference Design (Rev. A) (TSC, 55 KB) 369 views
  19 Jan 2009

Part #	Name	Product Family	Comments
INA129	Precision, Low Power Instrumentation Amplifiers	INSTRUMENTATION AMPLIFIER - DUAL SUPPLY	Identical performance with different gain equation.
INA131	Precision G = 100 Instrumentation Amplifier	INSTRUMENTATION AMPLIFIER - DUAL SUPPLY	Improve input offset
OPA130	Low Power, Precision FET-Input Operational Amplifiers	OPERATIONAL AMPLIFIER - STANDARD LINEAR AMPLIFIER	Use for AC-Coupling See Literature sbos051b
OPA177	Precision Operational Amplifier	PRECISION AMPLIFIER - LOW OFFSET VOLTAGE	Also use for offset trimming circuitry See Literature sbos051b
REF200	Dual Current Source/Current Sink	VOLTAGE REFERENCE - CURRENT REFERENCE	Also use for offset trimming circuitry See Literature sbos051b
REF102	Precision Voltage Reference	VOLTAGE REFERENCE - SERIES VOLTAGE REFERENCE	Use in resistive temperature device (RTD) application See Literature sbos051b
OPA2131	General Purpose FET-Input Operational Amplifiers	PRECISION AMPLIFIER - LOW NOISE	Use in electro cardiogram circuits See Literature sbos051b
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All End-Equipment

INA128 Status: ACTIVE

Precision, Low Power Instrumentation Amplifiers

See Also

Most Popular Links

Datasheet

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