Product details

Architecture Current FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 5 Total supply voltage (Max) (+5V=5, +/-5V=10) 12 GBW (Typ) (MHz) 145 BW @ Acl (MHz) 145 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 210 Vn at flatband (Typ) (nV/rtHz) 4.4 Vn at 1 kHz (Typ) (nV/rtHz) 4.4 Iq per channel (Typ) (mA) 0.79 Vos (offset voltage @ 25 C) (Max) (mV) 3.5 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (C) -40 to 85 CMRR (Typ) (dB) 56 Input bias current (Max) (pA) 4000000 Offset drift (Typ) (uV/C) 12 Output current (Typ) (mA) 110 2nd harmonic (dBc) 58 3rd harmonic (dBc) 68 @ MHz 5
Architecture Current FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 5 Total supply voltage (Max) (+5V=5, +/-5V=10) 12 GBW (Typ) (MHz) 145 BW @ Acl (MHz) 145 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 210 Vn at flatband (Typ) (nV/rtHz) 4.4 Vn at 1 kHz (Typ) (nV/rtHz) 4.4 Iq per channel (Typ) (mA) 0.79 Vos (offset voltage @ 25 C) (Max) (mV) 3.5 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (C) -40 to 85 CMRR (Typ) (dB) 56 Input bias current (Max) (pA) 4000000 Offset drift (Typ) (uV/C) 12 Output current (Typ) (mA) 110 2nd harmonic (dBc) 58 3rd harmonic (dBc) 68 @ MHz 5
SOIC (D) 8 19 mm² 3.91 x 4.9 SOT-23 (DBV) 6 5 mm² 2.9 x 1.6
  • REDUCED BANDWIDTH CHANGE VERSUS GAIN
  • 150MHz BANDWIDTH G = +2
  • > 90MHz BANDWIDTH TO GAIN > +10
  • LOW DISTORTION: < –69dBc at 5MHz
  • HIGH OUTPUT CURRENT: 110mA
  • SINGLE +5V TO +12V SUPPLY OPERATION
  • DUAL ±2.5V TO ±6V SUPPLY OPERATION
  • LOW SUPPLY CURRENT: 0.94mA
  • LOW SHUTDOWN CURRENT: 100 µA
  • APPLICATIONS
    • LOW POWER BROADCAST VIDEO DRIVERS
    • EQUALIZING FILTERS
    • SAW FILTER HIGH GAIN POST AMPLIFIERS
    • SHORT LOOP ADSL CO DRIVERS
    • MULTICHANNEL SUMMING AMPLIFIERS
    • PROFESSIONAL CAMERAS
    • ADC INPUT DRIVERS

All trademarks are the property of their respective owners.

  • REDUCED BANDWIDTH CHANGE VERSUS GAIN
  • 150MHz BANDWIDTH G = +2
  • > 90MHz BANDWIDTH TO GAIN > +10
  • LOW DISTORTION: < –69dBc at 5MHz
  • HIGH OUTPUT CURRENT: 110mA
  • SINGLE +5V TO +12V SUPPLY OPERATION
  • DUAL ±2.5V TO ±6V SUPPLY OPERATION
  • LOW SUPPLY CURRENT: 0.94mA
  • LOW SHUTDOWN CURRENT: 100 µA
  • APPLICATIONS
    • LOW POWER BROADCAST VIDEO DRIVERS
    • EQUALIZING FILTERS
    • SAW FILTER HIGH GAIN POST AMPLIFIERS
    • SHORT LOOP ADSL CO DRIVERS
    • MULTICHANNEL SUMMING AMPLIFIERS
    • PROFESSIONAL CAMERAS
    • ADC INPUT DRIVERS

All trademarks are the property of their respective owners.

The OPA683 provides a new level of performance in very low-power, wideband, current feedback amplifiers. This CFBplus amplifier is among the first to use an internally closed-loop input buffer stage that enhances performance significantly over earlier low-power CFB amplifiers. While retaining the benefits of very low power operation, this new architecture provides many of the advantages of a more ideal CFB amplifier. The closed-loop input stage buffer gives a very low and linearized impedance path at the inverting input to sense the feedback error current. This improved inverting input impedance gives exceptional bandwidth retention to much higher gains and improved harmonic distortion over earlier solutions limited by inverting input linearity. Beyond simple high gain applications, the OPA683 CFBplus amplifier can allow the gain setting element to be set with considerable freedom from amplifier bandwidth interaction. This allows frequency response peaking elements to be added, multiple input inverting summing circuits to have greater bandwidth, and low-power line drivers to meet the demanding requirements of studio cameras and broadcast video.

The output capability for the OPA683 also sets a new mark in performance for very low-power current feedback amplifiers. Delivering a full ±4Vp-p swing on ±5V supplies, the OPA683 also has the output current to support this swing into a 100 load. This minimal output headroom requirement is complemented by a similar 1.2V input stage headroom giving exceptional capability for single +5V operation.

The OPA683’s low 0.94mA supply current is precisely trimmed at 25°C. This trim, along with low shift over temperature and supply voltage, gives a very robust design over a wide range of operating conditions. System power may be further reduced by using the optional disable control pin. Leaving this disable pin open, or holding it HIGH, gives normal operation. If pulled LOW, the OPA683 supply current drops to less than 100µA while the I/O pins go to a high impedance state.

The OPA683 provides a new level of performance in very low-power, wideband, current feedback amplifiers. This CFBplus amplifier is among the first to use an internally closed-loop input buffer stage that enhances performance significantly over earlier low-power CFB amplifiers. While retaining the benefits of very low power operation, this new architecture provides many of the advantages of a more ideal CFB amplifier. The closed-loop input stage buffer gives a very low and linearized impedance path at the inverting input to sense the feedback error current. This improved inverting input impedance gives exceptional bandwidth retention to much higher gains and improved harmonic distortion over earlier solutions limited by inverting input linearity. Beyond simple high gain applications, the OPA683 CFBplus amplifier can allow the gain setting element to be set with considerable freedom from amplifier bandwidth interaction. This allows frequency response peaking elements to be added, multiple input inverting summing circuits to have greater bandwidth, and low-power line drivers to meet the demanding requirements of studio cameras and broadcast video.

The output capability for the OPA683 also sets a new mark in performance for very low-power current feedback amplifiers. Delivering a full ±4Vp-p swing on ±5V supplies, the OPA683 also has the output current to support this swing into a 100 load. This minimal output headroom requirement is complemented by a similar 1.2V input stage headroom giving exceptional capability for single +5V operation.

The OPA683’s low 0.94mA supply current is precisely trimmed at 25°C. This trim, along with low shift over temperature and supply voltage, gives a very robust design over a wide range of operating conditions. System power may be further reduced by using the optional disable control pin. Leaving this disable pin open, or holding it HIGH, gives normal operation. If pulled LOW, the OPA683 supply current drops to less than 100µA while the I/O pins go to a high impedance state.

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Technical documentation

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Type Title Date
* Data sheet Very Low-Power, Current Feedback Operational Amplifier with Disable datasheet (Rev. E) 02 Jul 2008
Technical article 3 common questions when designing with high-speed amplifiers 17 Jul 2020
Technical article How to reduce distortion in high-voltage, high-frequency signal generation for AWGs 30 Oct 2018
Technical article What are the advantages of using JFET-input amplifiers in high-speed applications? 19 Jun 2018
Technical article Unique active mux capability combines buffer and switch into one solution 10 Oct 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note RLC Filter Design for ADC Interface Applications (Rev. A) 13 May 2015
Application note Wideband Complementary Current Output DAC Single-Ended Interface (Rev. A) 08 May 2015
User guide DEM-OPA-SO-1A User's Guide (Rev. B) 12 Apr 2012
User guide DEM-OPA-SOT-1A User's Guide (Rev. B) 12 Apr 2012
Application note A Numerical Solution to an Analog Problem 25 Apr 2010
Application note Making the Most of a Low-Power, High-Speed Operational Amplifier 22 Nov 2009
User guide DEM-OPA-SOT-1A User's Guide (Rev. A) 22 Mar 2006
User guide DEM-OPA-SO-1A User's Guide (Rev. A) 16 Mar 2006
Analog design journal Expanding the usability of current-feedback amplifiers 28 Feb 2005
Analog design journal Active filters using current-feedback amplifiers 25 Feb 2005
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005
Application note Stabilizing Current-Feedback Op Amps While Optimizing Circuit Performance 28 Apr 2004
Application note ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers 22 Apr 2004
Application note Measuring Board Parasitics in High-Speed Analog Design 07 Jul 2003
Application note Current Feedback Amplifiers: Review, Stability Analysis, and Applications 20 Nov 2000

Design & development

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

Evaluation board

DEM-OPA-SO-1A — Single op-amp evaluation module for SO-8 package

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

In stock
Limit: 5
Evaluation board

DEM-OPA-SOT-1A — Single op amp evaluation module for SOT23-5/6 package

The DEM-OPA-SOT-1A is a demonstration fixture that helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the SOT(DBV) package.

In stock
Limit: 5
Simulation model

OPA683 TINA-TI Reference Design (Rev. C)

SBOC122C.TSC (100 KB) - TINA-TI Reference Design
Simulation model

OPA683 PSpice Model (Rev. B)

SBOM145B.ZIP (39 KB) - PSpice Model
Simulation model

OPA683 TINA-TI Spice Model (Rev. A)

SBOM197A.ZIP (5 KB) - TINA-TI Spice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
Calculation tool

VOLT-DIVIDER-CALC — Voltage Divider Determines A Set of Resistors for a Voltage Divider

VOLT-DIVIDER-CALC quickly determines a set of resistors for a voltage divider. This KnowledgeBase Javascript utility can be used to find a set of resistors for a voltage divider to achieve the desired output voltage. This calculator can also be used to design non-inverting attentuation circuits.

(...)

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Package Pins Download
SOIC (D) 8 View options
SOT-23 (DBV) 6 View options

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