Specification	OPA861ID

Amplifier Type	Transconductance
Current - Input Bias	1 µA
Current - Output / Channel	15 mA
Current - Supply	5.4 mA
Gain Bandwidth Product	80 MHz
Mounting Type	Surface Mount
Number of Circuits	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Slew Rate	900 V/µs
Supplier Device Package	8-SOIC
Voltage - Input Offset	3 mV
Voltage - Supply Span (Max) [Max]	12.6 V
Voltage - Supply Span (Min) [Min]	4 V

OPA861 Series

Wide Bandwidth Operational Transconductance Amplifier

Part	Slew Rate	Voltage - Input Offset	Voltage - Supply Span (Max) [Max]	Gain Bandwidth Product	Number of Circuits	Current - Output / Channel	Supplier Device Package	Mounting Type	Voltage - Supply Span (Min) [Min]	Current - Input Bias	Operating Temperature [Max]	Operating Temperature [Min]	Amplifier Type	Current - Supply	Package / Case	Package / Case [y]	Package / Case [x]
Texas Instruments OPA861IDBVR	900 V/µs	3 mV	12.6 V	80 MHz	1	15 mA	SOT-23-6	Surface Mount	4 V	1 µA	85 °C	-40 °C	Transconductance	5.4 mA	SOT-23-6
Texas Instruments OPA861ID	900 V/µs	3 mV	12.6 V	80 MHz	1	15 mA	8-SOIC	Surface Mount	4 V	1 µA	85 °C	-40 °C	Transconductance	5.4 mA	8-SOIC	3.9 mm	0.154 in
Texas Instruments OPA861IDBVT	900 V/µs	3 mV	12.6 V	80 MHz	1	15 mA	SOT-23-6	Surface Mount	4 V	1 µA	85 °C	-40 °C	Transconductance	5.4 mA	SOT-23-6

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 3.57
		10	$ 3.20
		75	$ 3.03
		150	$ 2.62
		300	$ 2.49
		525	$ 2.23
		1050	$ 1.88
		2550	$ 1.79
		5025	$ 1.72
Texas Instruments	TUBE	1	$ 3.10
		100	$ 2.71
		250	$ 1.90
		1000	$ 1.53

Description

General part information

OPA861 Series

The OPA861 is a versatile monolithic component designed for wide-bandwidth systems, including high performance video, RF and IF circuitry. The OPA861 is a wideband, bipolar operational transconductance amplifier (OTA).

The OTA or voltage-controlled current source can be viewed as anideal transistor. Like a transistor, it has three terminals—a high impedance input (base), a low-impedance input/output (emitter), and the current output (collector). The OPA861, however, is self-biased and bipolar. The output collector current is zero for a zero base-emitter voltage. AC inputs centered about zero produce an output current, which is bipolar and centered about zero. The transconductance of the OPA861 can be adjusted with an external resistor, allowing bandwidth, quiescent current, and gain trade-offs to be optimized.

Used as a basic building block, the OPA861 simplifies the design of AGC amplifiers, LED driver circuits for fiber optic transmission, integrators for fast pulses, fast control loop amplifiers and control amplifiers for capacitive sensors, and active filters. The OPA861 is available in SO-8 and SOT23-6 surface-mount packages.

Documents

Technical documentation and resources

Wide Bandwidth Operational Transconductance Amplifier (OTA) datasheet (Rev. G)

Data sheet