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High-speed op amps (GBW ≥ 50 MHz)

OPA694

ACTIVE

WideBand, Low-Power, Current Feedback Amplifier

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Data sheet

OPA694

ACTIVE
Data sheet Order now

Product details

Architecture Current FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 7 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12.6 GBW (typ) (MHz) 1500 BW at Acl (MHz) 1500 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1700 Vn at flatband (typ) (nV√Hz) 2.1 Vn at 1 kHz (typ) (nV√Hz) 2.1 Iq per channel (typ) (mA) 5.8 Vos (offset voltage at 25°C) (max) (mV) 3 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 60 Input bias current (max) (pA) 20000000 Offset drift (typ) (µV/°C) 15 Iout (typ) (mA) 80 2nd harmonic (dBc) 68 3rd harmonic (dBc) 72 Frequency of harmonic distortion measurement (MHz) 5
Architecture Current FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 7 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12.6 GBW (typ) (MHz) 1500 BW at Acl (MHz) 1500 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1700 Vn at flatband (typ) (nV√Hz) 2.1 Vn at 1 kHz (typ) (nV√Hz) 2.1 Iq per channel (typ) (mA) 5.8 Vos (offset voltage at 25°C) (max) (mV) 3 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 60 Input bias current (max) (pA) 20000000 Offset drift (typ) (µV/°C) 15 Iout (typ) (mA) 80 2nd harmonic (dBc) 68 3rd harmonic (dBc) 72 Frequency of harmonic distortion measurement (MHz) 5
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • UNITY GAIN STABLE BANDWIDTH: 1.5GHz
  • HIGH GAIN OF 2V/V BANDWIDTH: 690MHz
  • LOW SUPPLY CURRENT: 5.8mA
  • HIGH SLEW RATE: 1700V/µsec
  • HIGH FULL-POWER BANDWIDTH: 675MHz
  • LOW DIFFERENTIAL GAIN/PHASE: 0.03%/0.015°
  • Pb-FREE AND GREEN SOT23-5 PACKAGE
  • APPLICATIONS
    • WIDEBAND VIDEO LINE DRIVER
    • MATRIX SWITCH BUFFER
    • DIFFERENTIAL RECEIVER
    • ADC DRIVER
    • IMPROVED REPLACEMENT FOR OPA658
  • UNITY GAIN STABLE BANDWIDTH: 1.5GHz
  • HIGH GAIN OF 2V/V BANDWIDTH: 690MHz
  • LOW SUPPLY CURRENT: 5.8mA
  • HIGH SLEW RATE: 1700V/µsec
  • HIGH FULL-POWER BANDWIDTH: 675MHz
  • LOW DIFFERENTIAL GAIN/PHASE: 0.03%/0.015°
  • Pb-FREE AND GREEN SOT23-5 PACKAGE
  • APPLICATIONS
    • WIDEBAND VIDEO LINE DRIVER
    • MATRIX SWITCH BUFFER
    • DIFFERENTIAL RECEIVER
    • ADC DRIVER
    • IMPROVED REPLACEMENT FOR OPA658

The OPA694 is an ultra-wideband, low-power, current feedback operational amplifier featuring high slew rate and low differential gain/phase errors. An improved output stage provides ±80mA output drive with < 1.5V output voltage headroom. Low supply current with > 500MHz bandwidth meets the requirements of high-density video routers. Being a current feedback design, the OPA694 holds its bandwidth to very high gains—at a gain of 10, the OPA694 will still provide 200MHz bandwidth.

RF applications can use the OPA694 as a low-power SAW pre-amplifier. Extremely high 3rd-order intercept is provided through 70MHz at much lower quiescent power than many typical RF amplifiers.

The OPA694 is available in an industry-standard pinout in both SO-8 and SOT23-5 packages.

The OPA694 is an ultra-wideband, low-power, current feedback operational amplifier featuring high slew rate and low differential gain/phase errors. An improved output stage provides ±80mA output drive with < 1.5V output voltage headroom. Low supply current with > 500MHz bandwidth meets the requirements of high-density video routers. Being a current feedback design, the OPA694 holds its bandwidth to very high gains—at a gain of 10, the OPA694 will still provide 200MHz bandwidth.

RF applications can use the OPA694 as a low-power SAW pre-amplifier. Extremely high 3rd-order intercept is provided through 70MHz at much lower quiescent power than many typical RF amplifiers.

The OPA694 is available in an industry-standard pinout in both SO-8 and SOT23-5 packages.
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Technical documentation

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Type Title Date
* Data sheet Wideband, Low Power, Current Feedback Operational Amplifier datasheet (Rev. G) 15 Jan 2010
Technical article 3 common questions when designing with high-speed amplifiers 17 Jul 2020
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
Technical article Cable equalization 101 – Automating your design (Part 1) 21 May 2013
User guide DEM-OPA-SO-1B User's Guide (Rev. D) 12 Apr 2012
User guide DEM-OPA-SO-1B User's Guide (Rev. C) 22 Apr 2011
User guide DEM-OPA-SOT-1B User's Guide (Rev. B) 12 Apr 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 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-1B — Single op-amp evaluation module for SO-8 (non-inverting) package

The DEM-OPA-SO-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

For more (...)

User guide: PDF
Not available on TI.com
Evaluation board

DEM-OPA-SOT-1B — Single op amp evaluation module for SOT23-5/6 (non-inverting) package

The DEM-OPA-SOT-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the SOT23 (DBV) package.

User guide: PDF
Not available on TI.com
Simulation model

OPA694 PSpice Model (Rev. B)

SBOC068B.ZIP (22 KB) - PSpice Model
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Simulation model

OPAy694 Family TINA-TI Reference Design (Rev. A)

SBOM446A.TSC (2316 KB) - TINA-TI Reference Design
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Simulation model

OPAy694 Family TINA-TI Spice Model (Rev. A)

SBOM445A.ZIP (5 KB) - TINA-TI Spice Model
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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 operational-amplifier (...)
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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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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 (...)
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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 (...)
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SOIC (D) 8 View options
SOT-23 (DBV) 5 View options
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