Product details

Architecture Current FB Number of channels (#) 2 Total supply voltage (Min) (+5V=5, +/-5V=10) 4 Total supply voltage (Max) (+5V=5, +/-5V=10) 12 GBW (Typ) (MHz) 280 BW @ Acl (MHz) 280 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 2100 Vn at flatband (Typ) (nV/rtHz) 1.7 Vn at 1 kHz (Typ) (nV/rtHz) 1.7 Iq per channel (Typ) (mA) 5.1 Vos (offset voltage @ 25 C) (Max) (mV) 3 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (C) -40 to 85 CMRR (Typ) (dB) 56 Input bias current (Max) (pA) 35000000 Offset drift (Typ) (uV/C) 20 Output current (Typ) (mA) 190 2nd harmonic (dBc) 70 3rd harmonic (dBc) 74 @ MHz 5
Architecture Current FB Number of channels (#) 2 Total supply voltage (Min) (+5V=5, +/-5V=10) 4 Total supply voltage (Max) (+5V=5, +/-5V=10) 12 GBW (Typ) (MHz) 280 BW @ Acl (MHz) 280 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 2100 Vn at flatband (Typ) (nV/rtHz) 1.7 Vn at 1 kHz (Typ) (nV/rtHz) 1.7 Iq per channel (Typ) (mA) 5.1 Vos (offset voltage @ 25 C) (Max) (mV) 3 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (C) -40 to 85 CMRR (Typ) (dB) 56 Input bias current (Max) (pA) 35000000 Offset drift (Typ) (uV/C) 20 Output current (Typ) (mA) 190 2nd harmonic (dBc) 70 3rd harmonic (dBc) 74 @ MHz 5
SOIC (D) 14 52 mm² 8.65 x 6 SOIC (D) 8 19 mm² 3.91 x 4.9
  • FLEXIBLE SUPPLY RANGE:
       +5V to +12V Single Supply
       ±2.5V to ±6V Dual Supply
  • WIDEBAND +5V OPERATION: 190MHz (G =+2)
  • UNITY-GAIN STABLE: 280MHz (G =1)
  • HIGH OUTPUT CURRENT: 190mA
  • OUTPUT VOLTAGE SWING: ±4.0V
  • HIGH SLEW RATE: 2100V/µs
  • LOW SUPPLY CURRENT: 5.1mA/ch
  • LOW DISABLED CURRENT: 150 µA/ch
  • APPLICATIONS
    • xDSL LINE DRIVER/RECEIVER
    • MATCHED I/Q CHANNEL AMPLIFIER
    • BROADBAND VIDEO BUFFERS
    • HIGH-SPEED IMAGING CHANNELS
    • PORTABLE INSTRUMENTS
    • DIFFERENTIAL ADC DRIVERS
    • ACTIVE FILTERS
    • WIDEBAND INVERTING SUMMING

All trademarks are the property of their respective owners.

  • FLEXIBLE SUPPLY RANGE:
       +5V to +12V Single Supply
       ±2.5V to ±6V Dual Supply
  • WIDEBAND +5V OPERATION: 190MHz (G =+2)
  • UNITY-GAIN STABLE: 280MHz (G =1)
  • HIGH OUTPUT CURRENT: 190mA
  • OUTPUT VOLTAGE SWING: ±4.0V
  • HIGH SLEW RATE: 2100V/µs
  • LOW SUPPLY CURRENT: 5.1mA/ch
  • LOW DISABLED CURRENT: 150 µA/ch
  • APPLICATIONS
    • xDSL LINE DRIVER/RECEIVER
    • MATCHED I/Q CHANNEL AMPLIFIER
    • BROADBAND VIDEO BUFFERS
    • HIGH-SPEED IMAGING CHANNELS
    • PORTABLE INSTRUMENTS
    • DIFFERENTIAL ADC DRIVERS
    • ACTIVE FILTERS
    • WIDEBAND INVERTING SUMMING

All trademarks are the property of their respective owners.

The OPA2691 sets a new level of performance for broadband dual current-feedback op amps. Operating on a very low 5.1mA/ch supply current, the OPA2691 offers a slew rate and output power normally associated with a much higher supply current. A new output stage architecture delivers a high output current with minimal voltage headroom and crossover distortion. This gives exceptional single-supply operation. Using a single +5V supply, the OPA2691 can deliver a 1V to 4V output swing with over 150mA drive current and 190MHz bandwidth. This combination of features makes the OPA2691 an ideal RGB line driver or single-supply Analog-to-Digital Converter (ADC) input driver.

The OPA2691’s low 5.1mA/ch supply current is precisely trimmed at 25°C. This trim, along with low drift over temperature, ensures lower maximum supply current than competing products. System power may be further reduced by using the optional disable control pin (SO-14 only). Leaving this disable pin open, or holding it HIGH, gives normal operation. If pulled LOW, the OPA2691 supply current drops to less than 150 µA/ch while the output goes into a high impedance state. This feature may be used for power savings.

The OPA2691 sets a new level of performance for broadband dual current-feedback op amps. Operating on a very low 5.1mA/ch supply current, the OPA2691 offers a slew rate and output power normally associated with a much higher supply current. A new output stage architecture delivers a high output current with minimal voltage headroom and crossover distortion. This gives exceptional single-supply operation. Using a single +5V supply, the OPA2691 can deliver a 1V to 4V output swing with over 150mA drive current and 190MHz bandwidth. This combination of features makes the OPA2691 an ideal RGB line driver or single-supply Analog-to-Digital Converter (ADC) input driver.

The OPA2691’s low 5.1mA/ch supply current is precisely trimmed at 25°C. This trim, along with low drift over temperature, ensures lower maximum supply current than competing products. System power may be further reduced by using the optional disable control pin (SO-14 only). Leaving this disable pin open, or holding it HIGH, gives normal operation. If pulled LOW, the OPA2691 supply current drops to less than 150 µA/ch while the output goes into a high impedance state. This feature may be used for power savings.

Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 17
Type Title Date
* Data sheet Dual Wideband, Current-Feedback Operational Amplifier With Disable datasheet (Rev. D) 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
User guide DEM-OPA-SO-2A User's Guide (Rev. B) 30 Apr 2010
Application note Wireline Data Transmission and Reception 27 Jan 2010
User guide DEM-OPA-SO-2D User's Guide (Rev. A) 25 May 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-2A — Dual op amp evaluation module for SO-8 package

 The DEM-OPA-SO-2A demonstration fixture helps designers evaluate the operation and performance of TI's dual, high speed, wideband operational amplifiers. This unpopulated PC board (PCB) is compatible with products offered in the 8-lead SOIC (D) package.
 
For more information on these types of op (...)
In stock
Limit: 1
Evaluation board

DEM-OPA-SO-2D — Dual op amp evaluation module for SO-14 package

In stock
Limit: 1
Simulation model

OPA2691 TINA-TI Spice Model

SBOM555.ZIP (6 KB) - TINA-TI Spice Model
Simulation model

OPA2691 PSpice Model

SBOM556.ZIP (37 KB) - PSpice Model
Simulation model

OPA2691 TINA-TI Reference Design

SBOM557.TSC (103 KB) - TINA-TI Reference Design
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.

(...)

Not available
Package Pins Download
SOIC (D) 14 View options
SOIC (D) 8 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos