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OPA445

ACTIVE

High Voltage FET-Input Operational Amplifier

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Data sheet

OPA445

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 20 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 90 Iout (typ) (A) 0.026 GBW (typ) (MHz) 2 Slew rate (typ) (V/µs) 15 Vos (offset voltage at 25°C) (max) (mV) 3 Offset drift (typ) (V/°C) 0.00001 Iq per channel (typ) (mA) 4.2 Rating Catalog Operating temperature range (°C) -55 to 125 Input bias current (max) (pA) 50 CMRR (typ) (dB) 95 Rail-to-rail No Architecture FET
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 20 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 90 Iout (typ) (A) 0.026 GBW (typ) (MHz) 2 Slew rate (typ) (V/µs) 15 Vos (offset voltage at 25°C) (max) (mV) 3 Offset drift (typ) (V/°C) 0.00001 Iq per channel (typ) (mA) 4.2 Rating Catalog Operating temperature range (°C) -55 to 125 Input bias current (max) (pA) 50 CMRR (typ) (dB) 95 Rail-to-rail No Architecture FET
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6 TO-CAN (LMC) 8 80.2816 mm² 8.96 x 8.96
  • WIDE-POWER SUPPLY RANGE: ±10V to ±45V
  • HIGH SLEW RATE: 15V/µs
  • LOW INPUT BIAS CURRENT: 10pA
  • STANDARD-PINOUT TO-99, DIP, SO-8 PowerPAD™, AND SO-8 SURFACE-MOUNT PACKAGES
  • APPLICATIONS
    • TEST EQUIPMENT
    • HIGH-VOLTAGE REGULATORS
    • POWER AMPLIFIERS
    • DATA ACQUISITION
    • SIGNAL CONDITIONING
    • AUDIO
    • PIEZO DRIVERS

PowerPAD is a trademark of Texas Instruments, Inc. All other trademarks are the property of their respective owners.
  • WIDE-POWER SUPPLY RANGE: ±10V to ±45V
  • HIGH SLEW RATE: 15V/µs
  • LOW INPUT BIAS CURRENT: 10pA
  • STANDARD-PINOUT TO-99, DIP, SO-8 PowerPAD™, AND SO-8 SURFACE-MOUNT PACKAGES
  • APPLICATIONS
    • TEST EQUIPMENT
    • HIGH-VOLTAGE REGULATORS
    • POWER AMPLIFIERS
    • DATA ACQUISITION
    • SIGNAL CONDITIONING
    • AUDIO
    • PIEZO DRIVERS

PowerPAD is a trademark of Texas Instruments, Inc. All other trademarks are the property of their respective owners.

The OPA445 is a monolithic operational amplifier capable of operation from power supplies up to ±45V and output currents of 15mA. It is useful in a wide variety of applications requiring high output voltage or large common-mode voltage swings.

The OPA445's high slew rate provides wide powerbandwidth response, which is often required for high-voltage applications. FET input circuitry allows the use of high-impedance feedback networks, thus minimizing their output loading effects. Laser trimming of the input circuitry yields low input offset voltage and drift.

The OPA445 is available in standard pinout TO-99, DIP-8, and SO-8 surface-mount packages as well as an SO-8 PowerPAD package for reducing junction temperature. It is fully specified from -25°C to +85°C and operates from -55°C to +125°C. A SPICE macromodel is available for design analysis (from www.ti.com).

The OPA445 is a monolithic operational amplifier capable of operation from power supplies up to ±45V and output currents of 15mA. It is useful in a wide variety of applications requiring high output voltage or large common-mode voltage swings.

The OPA445's high slew rate provides wide powerbandwidth response, which is often required for high-voltage applications. FET input circuitry allows the use of high-impedance feedback networks, thus minimizing their output loading effects. Laser trimming of the input circuitry yields low input offset voltage and drift.

The OPA445 is available in standard pinout TO-99, DIP-8, and SO-8 surface-mount packages as well as an SO-8 PowerPAD package for reducing junction temperature. It is fully specified from -25°C to +85°C and operates from -55°C to +125°C. A SPICE macromodel is available for design analysis (from www.ti.com).
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Technical documentation

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Type Title Date
* Data sheet High Voltage FET-Input Operational Amplifier datasheet (Rev. B) 10 Apr 2008
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note Optoelectronics Circuit Collection 11 Jun 2001
Application note Boost Instrument Amp CMR With Common-Mode Driven Supplies 27 Sep 2000
Application note Simple Circuit Delivers 38Vp-p at 5A from 28V Unipolar Supply 27 Sep 2000

Design & development

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

Simulation model

OPA445 PSpice Model (Rev. A)

SBOM079A.ZIP (37 KB) - PSpice Model
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Simulation model

OPA445 TINA-TI Reference Design (Rev. B)

SBOC107B.TSC (102 KB) - TINA-TI Reference Design
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Simulation model

OPA445 TINA-TI Spice Model (Rev. B)

SBOC212B.ZIP (3 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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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 (...)
User guide: PDF
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HSOIC (DDA) 8 View options
PDIP (P) 8 View options
SOIC (D) 8 View options
TO-CAN (LMC) 8 View options
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