Product details

Architecture Voltage 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) 800 BW @ Acl (MHz) 800 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 240 Vn at flatband (Typ) (nV/rtHz) 2.5 Vn at 1 kHz (Typ) (nV/rtHz) 2.5 Iq per channel (Typ) (mA) 5.6 Vos (offset voltage @ 25 C) (Max) (mV) 3.5 Rail-to-rail No Rating High Temp Operating temperature range (C) -55 to 210 CMRR (Typ) (dB) 85 Input bias current (Max) (pA) 16000000 Offset drift (Typ) (uV/C) 7 Output current (Typ) (mA) 110 2nd harmonic (dBc) 85 3rd harmonic (dBc) 95 @ MHz 1
Architecture Voltage 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) 800 BW @ Acl (MHz) 800 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 240 Vn at flatband (Typ) (nV/rtHz) 2.5 Vn at 1 kHz (Typ) (nV/rtHz) 2.5 Iq per channel (Typ) (mA) 5.6 Vos (offset voltage @ 25 C) (Max) (mV) 3.5 Rail-to-rail No Rating High Temp Operating temperature range (C) -55 to 210 CMRR (Typ) (dB) 85 Input bias current (Max) (pA) 16000000 Offset drift (Typ) (uV/C) 7 Output current (Typ) (mA) 110 2nd harmonic (dBc) 85 3rd harmonic (dBc) 95 @ MHz 1
  • High Bandwidth
    (240 MHz at 25°C and 100 MHz at 210°C, G = 2)
  • High Output Current
    (±110 mA at 25°C and 50 mA at 210°C)
  • Low Input Noise
    (2.5 nV/√Hz at 25°C and 4.5 nV/√Hzat 210°C)
  • Low Supply Current
    (5.6 mA at 25°C and 6.8 mA at 210°C)
  • Flexible Supply Voltage:
    • Dual ±2.5 V to ±5 V
    • Single +5 V
  • High Bandwidth
    (240 MHz at 25°C and 100 MHz at 210°C, G = 2)
  • High Output Current
    (±110 mA at 25°C and 50 mA at 210°C)
  • Low Input Noise
    (2.5 nV/√Hz at 25°C and 4.5 nV/√Hzat 210°C)
  • Low Supply Current
    (5.6 mA at 25°C and 6.8 mA at 210°C)
  • Flexible Supply Voltage:
    • Dual ±2.5 V to ±5 V
    • Single +5 V

The OPA820 provides a wideband, unity-gain stable, voltage-feedback amplifier with a very low input noise voltage and high output current using a low 6.8-mA supply current. The OPA820 complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input offset voltage of ±3.5 mV and an offset current of ±700 nA give excellent absolute DC precision for pulse amplifier applications.

Minimal input and output voltage swing headroom allow the OPA820 to operate on a single 5-V supply with > 2VPP output swing. While not a rail-to-rail (RR) output, this swing will support most emerging analog-to-digital converter (ADC) input ranges with lower power and noise than typical RR output op amps.

The OPA820 is characterized for operation from –55°C to 210°C.

The OPA820 provides a wideband, unity-gain stable, voltage-feedback amplifier with a very low input noise voltage and high output current using a low 6.8-mA supply current. The OPA820 complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input offset voltage of ±3.5 mV and an offset current of ±700 nA give excellent absolute DC precision for pulse amplifier applications.

Minimal input and output voltage swing headroom allow the OPA820 to operate on a single 5-V supply with > 2VPP output swing. While not a rail-to-rail (RR) output, this swing will support most emerging analog-to-digital converter (ADC) input ranges with lower power and noise than typical RR output op amps.

The OPA820 is characterized for operation from –55°C to 210°C.

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Technical documentation

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Type Title Date
* Data sheet Unity-Gain Stable, Low Noise, Voltage-Feedback Operational Amplifier datasheet 19 Dec 2011
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005

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.

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.

Simulation model

OPA820-HT TINA-TI Spice Model

SBOM742.ZIP (4 KB) - TINA-TI Spice Model
Simulation model

OPA820-HT TINA-TI Reference Design

SBOM743.TSC (45 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 (...)
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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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