Specification	OPA380AIDGKT

Amplifier Type	Transimpedance
Current - Input Bias	3 pA
Current - Output / Channel	150 mA
Current - Supply	7.5 mA
Gain Bandwidth Product	90 MHz
Mounting Type	Surface Mount
Number of Circuits	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Package / Case	8-MSOP, 8-TSSOP
Package / Case	3 mm
Package / Case [custom]	0.118 in
Slew Rate	80 V/µs
Voltage - Input Offset	4 µV
Voltage - Supply Span (Max) [Max]	5.5 V
Voltage - Supply Span (Min) [Min]	2.7 V

OPA380 Series

Single, High-Speed Precision Transimpedance Amplifier

Part	Voltage - Input Offset	Mounting Type	Package / Case	Package / Case [custom]	Package / Case	Amplifier Type	Gain Bandwidth Product	Slew Rate	Operating Temperature [Max]	Operating Temperature [Min]	Current - Supply	Voltage - Supply Span (Min) [Min]	Current - Output / Channel	Current - Input Bias	Voltage - Supply Span (Max) [Max]	Number of Circuits	Package / Case [y]	Package / Case [x]	Supplier Device Package
Texas Instruments OPA380AIDGKTG4	4 µV	Surface Mount	8-MSOP 8-TSSOP	0.118 in	3 mm	Transimpedance	90 MHz	80 V/µs	125 °C	-40 °C	7.5 mA	2.7 V	150 mA	3 pA	5.5 V	1
Texas Instruments OPA380AIDRG4	4 µV	Surface Mount	8-SOIC			Transimpedance	90 MHz	80 V/µs	125 °C	-40 °C	7.5 mA	2.7 V	150 mA	3 pA	5.5 V	1	3.9 mm	0.154 in	8-SOIC
Texas Instruments OPA380AIDGKT	4 µV	Surface Mount	8-MSOP 8-TSSOP	0.118 in	3 mm	Transimpedance	90 MHz	80 V/µs	125 °C	-40 °C	7.5 mA	2.7 V	150 mA	3 pA	5.5 V	1
Texas Instruments OPA380AIDR	4 µV	Surface Mount	8-SOIC			Transimpedance	90 MHz	80 V/µs	125 °C	-40 °C	7.5 mA	2.7 V	150 mA	3 pA	5.5 V	1	3.9 mm	0.154 in	8-SOIC

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 6.06
		10	$ 5.45
		25	$ 5.15
		100	$ 4.46
	Digi-Reel®	1	$ 6.06
		10	$ 5.45
		25	$ 5.15
		100	$ 4.46
	Tape & Reel (TR)	250	$ 4.23
		500	$ 3.80
		1250	$ 3.20
		2500	$ 3.04
Newark	Each (Supplied on Cut Tape)	1	$ 6.76
		10	$ 6.47
		25	$ 6.15
		50	$ 5.88
		100	$ 5.62
		250	$ 5.44
		500	$ 5.31
		1000	$ 5.22
Texas Instruments	SMALL T&R	1	$ 4.17
		100	$ 3.40
		250	$ 2.67
		1000	$ 2.27

Description

General part information

OPA380 Series

The OPA380 family of transimpedance amplifiers provides high-speed (90MHz Gain Bandwidth [GBW]) operation, with extremely high precision, excellent long-term stability, and very low 1/f noise. It is ideally suited for high-speed photodiode applications. The OPA380 features an offset voltage of 25µV, offset drift of 0.1µV/°C, and bias current of 50pA. The OPA380 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 90MHz GBW of the OPA380 enables a transimpedance bandwidth of > 1MHz in most configurations. The OPA380 is ideally suited for fast control loops for power level on an optical fiber.

As a result of the high precision and low-noise characteristics of the OPA380, a dynamic range of 4 to 5 decades can be achieved. For example, this capability allows the measurement of signal currents on the order of 1nA, and up to 100µA in a single I/V conversion stage. In contrast to logarithmic amplifiers, the OPA380 provides very wide bandwidth throughout the full dynamic range. By using an external pull-down resistor to -5V, the output voltage range can be extended to include 0V.

Documents

Technical documentation and resources

Precision, High-Speed Transimpedance Amplifier datasheet (Rev. G)

Data sheet