OPA860 Series

Wide Bandwidth Operational Transconductance Amplifier and Buffer

Catalog

Wide Bandwidth Operational Transconductance Amplifier and Buffer

Part	Slew Rate	Voltage - Supply Span (Max) [Max]	Gain Bandwidth Product	Voltage - Supply Span (Min) [Min]	Package / Case	Package / Case [y]	Package / Case [x]	Amplifier Type	Mounting Type	Voltage - Input Offset	Number of Circuits	Operating Temperature [Max]	Operating Temperature [Min]	Current - Input Bias	Supplier Device Package	Current - Supply	Current - Output / Channel
Texas Instruments OPA860IDRG4	3500 V/µs	12 V	470 MHz	4.5 V	8-SOIC	3.9 mm	0.154 in	Transconductance	Surface Mount	3 mV	1	85 °C	-40 °C	1 µA	8-SOIC	11.2 mA
Texas Instruments OPA860ID	3500 V/µs	12 V	470 MHz	4.5 V	8-SOIC	3.9 mm	0.154 in	Transconductance	Surface Mount	3 mV	1	85 °C	-40 °C	1 µA	8-SOIC	11.2 mA	15 mA
Texas Instruments OPA860IDR	3500 V/µs	12 V	470 MHz	4.5 V	8-SOIC	3.9 mm	0.154 in	Transconductance	Surface Mount	3 mV	1	85 °C	-40 °C	1 µA	8-SOIC	11.2 mA	15 mA

Catalog

Wide Bandwidth Operational Transconductance Amplifier and Buffer

Key Features

• OTA FEATURESWide Bandwidth (80MHz, Open-Loop, G = +5)High Slew Rate (900V/µs)High Transconductance (95mA/V)External IQ-ControlBUFFER FEATURESClosed-Loop BufferWide Bandwidth (1600MHz, VO= 1VPP)High Slew Rate (4000V/µs)60mA Output CurrentOPA860 FEATURESLow Quiescent Current (11.2mA)Versatile Circuit FunctionAPPLICATIONSBaseline Restore CircuitsVideo/Broadcast EquipmentCommunications EquipmentHigh-Speed Data AcquisitionWideband LED DriverAGC-Multiplierns-Pulse IntegratorControl Loop AmplifierOPA660 UpgradeAll other trademarks are the property of their respective owners.OTA FEATURESWide Bandwidth (80MHz, Open-Loop, G = +5)High Slew Rate (900V/µs)High Transconductance (95mA/V)External IQ-ControlBUFFER FEATURESClosed-Loop BufferWide Bandwidth (1600MHz, VO= 1VPP)High Slew Rate (4000V/µs)60mA Output CurrentOPA860 FEATURESLow Quiescent Current (11.2mA)Versatile Circuit FunctionAPPLICATIONSBaseline Restore CircuitsVideo/Broadcast EquipmentCommunications EquipmentHigh-Speed Data AcquisitionWideband LED DriverAGC-Multiplierns-Pulse IntegratorControl Loop AmplifierOPA660 UpgradeAll other trademarks are the property of their respective owners.

Description

The OPA860 is a versatile monolithic component designed for wide-bandwidth systems, including high performance video, RF and IF circuitry. It includes a wideband, bipolar operational transconductance amplifier (OTA), and voltage buffer amplifier. 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 OTA, 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 OTA can be adjusted with an external resistor, allowing bandwidth, quiescent current, and gain trade-offs to be optimized. Also included in the OPA860 is an uncommited closed-loop, unity-gain buffer. This provides 1600MHz bandwidth and 4000V/µs slew rate. Used as a basic building block, the OPA860 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 OPA860 is available in an SO-8 surface-mount package. The OPA860 is a versatile monolithic component designed for wide-bandwidth systems, including high performance video, RF and IF circuitry. It includes a wideband, bipolar operational transconductance amplifier (OTA), and voltage buffer amplifier. 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 OTA, 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 OTA can be adjusted with an external resistor, allowing bandwidth, quiescent current, and gain trade-offs to be optimized. Also included in the OPA860 is an uncommited closed-loop, unity-gain buffer. This provides 1600MHz bandwidth and 4000V/µs slew rate. Used as a basic building block, the OPA860 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 OPA860 is available in an SO-8 surface-mount package.