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Product details

Parameters

Acl, min spec gain (V/V) 1 Available channels S Operating temperature range (C) -40 to 85 Output current (Typ) (mA) 15 Rating Catalog open-in-new Find other Transconductance amplifiers

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new Find other Transconductance amplifiers

Features

  • OTA FEATURES
    • Wide Bandwidth (80MHz, Open-Loop, G = +5)
    • High Slew Rate (900V/µs)
    • High Transconductance (95mA/V)
    • External IQ-Control
  • BUFFER FEATURES
    • Closed-Loop Buffer
    • Wide Bandwidth (1600MHz, VO = 1VPP)
    • High Slew Rate (4000V/µs)
    • 60mA Output Current
  • OPA860 FEATURES
    • Low Quiescent Current (11.2mA)
    • Versatile Circuit Function
  • APPLICATIONS
    • Baseline Restore Circuits
    • Video/Broadcast Equipment
    • Communications Equipment
    • High-Speed Data Acquisition
    • Wideband LED Driver
    • AGC-Multiplier
    • ns-Pulse Integrator
    • Control Loop Amplifier
    • OPA660 Upgrade

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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 an ideal 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.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet Wide-Bandwidth, Operational Transconductance Amplifier (OTA) and Buffer datasheet (Rev. C) Aug. 28, 2008
Technical articles Wanted: Stable oscillator Jul. 31, 2013
Application note Demystifying the Operational Transconductance Amplifier (Rev. A) Apr. 16, 2013
User guide DEM-OTA-SO-1A User's Guide (Rev. A) Feb. 02, 2006
Application note Noise Analysis for High Speed Op Amps (Rev. A) Jan. 17, 2005

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
5
Description

The DEM-OTA-SO-1A demonstration fixture helps designers evaluate the operation and performance of TI's Wide Bandwidth Operational Transconductance Amplifiers (OTA). This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

For more information on these types of (...)

Design tools & simulation

SIMULATION MODEL Download
SBOJ001.ZIP (4 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options

Ordering & quality

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Support & training

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