OPA381 Status: ACTIVE

Precision, Low Power, High-Speed Transimpedance Amplifier

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Datasheet

OPA381, OPA2381: Precision, Low Power, 18MHz Transimpedance Amplifier (Rev. B) (PDF 865 KB)
18 Nov 2004

	OPA381
Number of Channels	1
Total Supply Voltage (V)(Min)(+5V=5, +/-5V=10)	2.7
Total Supply Voltage (V)(Max)(+5V=5, +/-5V=10)	5.5
Iq per channel(Max)(mA)	1
GBW(Typ)(MHz)	18
Slew Rate(Typ)(V/us)	12
VIO (25 deg C)(Max)(mV)	0.025
Offset Drift(Typ)(uV/C)	0.03
IIB(Max)(pA)	50
CMRR(Min)(dB)	95
Vn at 1kHz(Typ)(nV/rtHz)	114
Rail-Rail	Out
Rating	Catalog
Pin/Package	8MSOP, 8SON
Operating Temp Range(Celsius)	-40 to 125
Approx. Price (US$)	1.85 \| 1ku
	Samples
	Inventory

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ONET2511TA: 2.5 Gbps Transimpedance Amplifier with RSSI

Product Information

Features

OVER 250kHz TRANSIMPEDANCE BANDWIDTH
DYNAMIC RANGE: 5 Decades
EXCELLENT LONG-TERM STABILITY
LOW VOLTAGE NOISE: 10nV/Hz
BIAS CURRENT: 3pA
OFFSET VOLTAGE: 25µV (max)
OFFSET DRIFT: 0.1µV/°C (max)
GAIN BANDWIDTH: 18MHz
QUIESCENT CURRENT: 800µA
FAST OVERLOAD RECOVERY
SUPPLY RANGE: 2.7V to 5.5V
SINGLE AND DUAL VERSIONS
MicroPACKAGE: DFN-8, MSOP-8
APPLICATIONS
- PRECISION I/V CONVERSION
- PHOTODIODE MONITORING
- OPTICAL AMPLIFIERS
- CAT-SCANNER FRONT-END
- PHOTO LAB EQUIPMENT

All trademarks are the property of their respective owners.

Description

The OPA381 family of transimpedance amplifiers provides 18MHz of Gain Bandwidth (GBW), with extremely high precision, excellent long-term stability, and very low 1/f noise. The OPA381 features an offset voltage of 25µV (max), offset drift of 0.1µV/°C (max), and bias current of 3pA. The OPA381 far exceeds the offset, drift, and noise performance that conventional JFET op amps provide.

The signal bandwidth of a transimpedance amplifier depends largely on the GBW of the amplifier and the parasitic capacitance of the photodiode, as well as the feedback resistor. The 18MHz GBW of the OPA381 enables a trans-impedance bandwidth of >: 250kHz in most configurations. The OPA381 is ideally suited for fast control loops for power level measurement on an optical fiber.

View All Description in Datasheet

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
OPA381AIDGKR	ACTIVE	-40 to 125	1.85 \| 1ku	MSOP (DGK) \| 8	View	2500 \| LARGE T&R	Purchase Samples
OPA381AIDGKRG4	ACTIVE	-40 to 125	1.85 \| 1ku	MSOP (DGK) \| 8	View	2500 \| LARGE T&R	Purchase Samples
OPA381AIDGKT	ACTIVE	-40 to 125	2.00 \| 1ku	MSOP (DGK) \| 8	View	250 \| SMALL T&R
OPA381AIDGKTG4	ACTIVE	-40 to 125	2.00 \| 1ku	MSOP (DGK) \| 8	View	250 \| SMALL T&R
OPA381AIDRBR	ACTIVE	-40 to 125	1.85 \| 1ku	SON (DRB) \| 8	View	3000 \| LARGE T&R		Purchase Samples
OPA381AIDRBRG4	ACTIVE	-40 to 125	1.85 \| 1ku	SON (DRB) \| 8	View	3000 \| LARGE T&R		Purchase Samples
OPA381AIDRBT	ACTIVE	-40 to 125	2.00 \| 1ku	SON (DRB) \| 8	View	250 \| SMALL T&R
OPA381AIDRBTG4	ACTIVE	-40 to 125	2.00 \| 1ku	SON (DRB) \| 8	View	250 \| SMALL T&R

* 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 11:50 AM GMT, 26 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 14 WeeksOPA381AIDGKR
Worldwide	DigiKey	Available
TI Lead Time*: 14 WeeksOPA381AIDGKRG4
Worldwide	DigiKey	Available
TI Lead Time*: 14 WeeksOPA381AIDGKT
Americas	Arrow	250
	Newark	110
	Rochester Electronics	>1k
Asia	WPI	49
Europe	Compel	190
Worldwide	DigiKey	185
TI Lead Time*: 14 WeeksOPA381AIDGKTG4
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	121
TI Lead Time*: 20 WeeksOPA381AIDRBR
None Reported View Distributors
TI Lead Time*: 20 WeeksOPA381AIDRBRG4
None Reported View Distributors
TI Lead Time*: 16 WeeksOPA381AIDRBT
Americas	Rochester Electronics	>1k
TI Lead Time*: 16 WeeksOPA381AIDRBTG4
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
OPA381AIDGKR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
OPA381AIDGKRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
OPA381AIDGKT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
OPA381AIDGKTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
OPA381AIDRBR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
OPA381AIDRBRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
OPA381AIDRBT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
OPA381AIDRBTG4	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

Most useful technical documents for OPA381

Datasheet

OPA381, OPA2381: Precision, Low Power, 18MHz Transimpedance Amplifier (Rev. B) (PDF, 865 KB)
18 Nov 2004

Application Notes

Thermal and Electrical Properties of Selected Packaging Materials (HTM, 8 KB) 16120 views
04 Oct 2000 Read Abstract
Shelf-Life Evaluation of Lead-Free Component Finishes (HTM, 8 KB) 27294 views
24 May 2004 Read Abstract
Tuning in Amplifiers (HTM, 8 KB) 9095 views
02 Oct 2000 Read Abstract
Single-Supply Operation of Operational Amplifiers (HTM, 8 KB) 10821 views
02 Oct 2000 Read Abstract
Op Amp Performance Analysis (HTM, 8 KB) 7807 views
02 Oct 2000 Read Abstract
High Speed Data Conversion (HTM, 8 KB) 22645 views
02 Oct 2000 Read Abstract

Tools & Software

Name	Part #	Company	Tool / Software Type
Analog Filter Design	FILTER-DESIGNER	Texas Instruments	Analysis Software
Automatic Resistor/Capacitor Calculator for Passive Filters	RC-FILTER-CALC	Texas Instruments	Calculation Utilities
Decibel Calculator	DECIBEL-CALC	Texas Instruments	Calculation Utilities
Frequency/Wavelength Calculator	FREQ-WAVE-CALC	Texas Instruments	Calculation Utilities
Noise Calculator, Generator and Examples	OPAMP-NOISECALC	Texas Instruments	Calculation Utilities
Op Amp Gain Stage Calculator	GAIN-STAGE-CALC	Texas Instruments	Calculation Utilities
Resistor Calculator for Op Amp Gain and Zero Shift	RESISTOR-CALC	Texas Instruments	Calculation Utilities
Universal EVM for Single/Dual OpAmps without Shutdown in MSOP/SOIC/SOT-23 Packages	OPAMPEVM-SOT23	Texas Instruments	Development Boards/EVMs
SPICE-Based Analog Simulation Program	TINA-TI	Texas Instruments	Simulators
MDACBufferPro(TM) Output Buffer Amplifier Selection Tool	MDACBUFFERPRO	Texas Instruments	Application Software
Active Filter Design Application	FILTERPRO	Texas Instruments	Application Software

Simulation Models

PSpice Model
- OPAy381 PSpice Model (Rev. A) (ZIP, 3 KB) 298 views
  11 May 2009
TINA-TI Reference Design
- OPAy381 TINA-TI Reference Design (TSC, 117 KB) 18 views
  11 May 2009
TINA-TI Spice Model
- OPAy381 TINA-TI Spice Model (TSM, 9 KB) 19 views
  11 May 2009

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OPA381 Status: ACTIVE

Precision, Low Power, High-Speed Transimpedance Amplifier

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