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) (opa381.pdf, 866 KB)
18 Nov 2004 Download

	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 \| 100u
	Samples
	Inventory

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OPA380: High Speed Precision Transimpedance Amplifier

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OPA2380: High Speed Precision Transimpedance Amplifier

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.

As a result of the high precision and low-noise characteristics of the OPA381, a dynamic range of 5 decades can be achieved. This capability allows the measurement of signal currents in the order of 10nA, and up to 1mA in a single I/V conversion stage. In contrast to logarithmic amplifiers, the OPA381 provides very wide bandwidth throughout the full dynamic range. By using an external pulldown resistor to –5V, the output voltage range can be extended to include 0V.

The OPA381 and OPA2381 are both available in MSOP-8 and DFN-8 (3mm x 3mm) packages. They are specified from –40°C to +125°C.

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
OPA381AIDGKR	ACTIVE	-40 to 125	1.85 \| 100u	MSOP (DGK) \| 8	View	2500 \| LARGE T&R	Purchase Samples
OPA381AIDGKRG4	ACTIVE	-40 to 125	1.85 \| 100u	MSOP (DGK) \| 8	View	2500 \| LARGE T&R	Purchase Samples
OPA381AIDGKT	ACTIVE	-40 to 125	2.00 \| 100u	MSOP (DGK) \| 8	View	250 \| SMALL T&R
OPA381AIDGKTG4	ACTIVE	-40 to 125	2.00 \| 100u	MSOP (DGK) \| 8	View	250 \| SMALL T&R
OPA381AIDRBR	ACTIVE	-40 to 125	1.85 \| 100u	SON (DRB) \| 8	View	3000 \| LARGE T&R		Purchase Samples
OPA381AIDRBRG4	ACTIVE	-40 to 125	1.85 \| 100u	SON (DRB) \| 8	View	3000 \| LARGE T&R		Purchase Samples
OPA381AIDRBT	ACTIVE	-40 to 125	2.00 \| 100u	SON (DRB) \| 8	View	250 \| SMALL T&R
OPA381AIDRBTG4	ACTIVE	-40 to 125	2.00 \| 100u	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

	TI Inventory Status			Reported Distributor Inventory
OPA381AIDGKR	As of 8:48 AM GMT, 29 Aug 2008			As of 8:48 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 20 Oct	8 Weeks	None Reported View Distributors
OPA381AIDGKRG4	As of 8:48 AM GMT, 29 Aug 2008			As of 8:48 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 20 Oct	8 Weeks	None Reported View Distributors
OPA381AIDGKT	As of 8:48 AM GMT, 29 Aug 2008			As of 8:48 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 20 Oct	8 Weeks	Americas	DigiKey	46
	0*		8 Weeks	Americas	Rochester Electronics	>1k
OPA381AIDGKTG4	As of 8:48 AM GMT, 29 Aug 2008			As of 8:48 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 20 Oct	8 Weeks	None Reported View Distributors
OPA381AIDRBR	As of 8:48 AM GMT, 29 Aug 2008			As of 8:48 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 3 Nov	12 Weeks	None Reported View Distributors
OPA381AIDRBRG4	As of 8:48 AM GMT, 29 Aug 2008			As of 8:48 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 3 Nov	12 Weeks	None Reported View Distributors
OPA381AIDRBT	As of 8:48 AM GMT, 29 Aug 2008			As of 8:48 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 13 Nov	12 Weeks	Americas	DigiKey	236
	0*		12 Weeks	Americas	Rochester Electronics	>1k
OPA381AIDRBTG4	As of 8:48 AM GMT, 29 Aug 2008			As of 8:48 AM GMT, 29 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 13 Nov	12 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
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

Datasheets

OPA381, OPA2381: Precision, Low Power, 18MHz Transimpedance Amplifier (Rev. B) (opa381.pdf, 866 KB)
18 Nov 2004 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
Tuning in Amplifiers (sboa067.htm, 8 KB)
02 Oct 2000 Abstract
Single-Supply Operation of Operational Amplifiers (sboa059.htm, 8 KB)
02 Oct 2000 Abstract
Op Amp Performance Analysis (sboa054.htm, 8 KB)
02 Oct 2000 Abstract
High Speed Data Conversion (sbaa045.htm, 8 KB)
02 Oct 2000 Abstract

Simulation Models

Spice Model
- OPA381 PSpice Macro Model and Test Circuit (sboc073.zip, 4 KB)
  28 Apr 2005 zip

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 Output Buffer Amplifier Selection Tool	MDACBUFFERPRO	Texas Instruments	Application Software
Active Filter Design Application	FILTERPRO	Texas Instruments	Application Software

Complementary Products - Can be used with OPA381
Part #	Name	Product Family	Comments
ADS8325	16-Bit, 100kSPS Serial Out, 2.7V to 5.5V Micro Power Sampling ADC	DATA CONVERTERS- ANALOG TO DIGITAL CONVERTERS	16-Bit, High-Speed, 2.7V to 5V microPower Sampling A/D Converter
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OPA381 Status:ACTIVE

Precision, Low Power, High-Speed Transimpedance Amplifier

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