Home Amplifiers Fully differential amplifiers
Home
Amplifiers
Fully differential amplifiers

OPA862

ACTIVE

12.6V, Low-noise, single-ended-to-differential, high input impedance amplifier

Order now
Data sheet

OPA862

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12.6 BW at Acl (MHz) 44 Acl, min spec gain (V/V) 2 Slew rate (typ) (V/µs) 140 Architecture Bipolar, Differential Amplifier, High Input Impedance Vn at flatband (typ) (nV√Hz) 2.3 Iq per channel (typ) (mA) 3.1 Rail-to-rail Out Vos (offset voltage at 25°C) (max) (mV) 0.325 Operating temperature range (°C) -40 to 125 Iout (typ) (mA) 60 2nd harmonic (dBc) -122 3rd harmonic (dBc) -140 Frequency of harmonic distortion measurement (MHz) 0.05 GBW (typ) (MHz) 400 Input bias current (max) (pA) 3100000 Features Shutdown CMRR (typ) (dB) 120 Rating Catalog
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12.6 BW at Acl (MHz) 44 Acl, min spec gain (V/V) 2 Slew rate (typ) (V/µs) 140 Architecture Bipolar, Differential Amplifier, High Input Impedance Vn at flatband (typ) (nV√Hz) 2.3 Iq per channel (typ) (mA) 3.1 Rail-to-rail Out Vos (offset voltage at 25°C) (max) (mV) 0.325 Operating temperature range (°C) -40 to 125 Iout (typ) (mA) 60 2nd harmonic (dBc) -122 3rd harmonic (dBc) -140 Frequency of harmonic distortion measurement (MHz) 0.05 GBW (typ) (MHz) 400 Input bias current (max) (pA) 3100000 Features Shutdown CMRR (typ) (dB) 120 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6 WSON (DTK) 8 9 mm² 3 x 3
  • Wide Supply Range: 3 V to 12.6 V
  • High Input Impedance: 325 MΩ
  • Voltage Noise:
    • Input-Referred (f ≥ 5 kHz): 2.3 nV/√ Hz
    • Output-Referred (f ≥ 10 kHz): 8.3 nV/√ Hz
  • Differential Output Offset: ±700 µV (Maximum)
  • Output Offset Drift: ±1.5 µV/°C (Typical)
  • A2 Bias Current Cancellation, IB: ±5 nA (Typical)
  • Gain-Bandwidth Product: 400 MHz
  • Small-Signal Bandwidth: 44 MHz (G = 2 V/V)
  • Slew Rate: 140 V/µs
  • HD2, HD3 (VOD = 10 VPP, 50 kHz): –122 dBc, –140 dBc
  • Rail-to-Rail Output:
    • High Linear Output Current: 60 mA (Typical)
  • Quiescent Current: 3.1 mA
  • Disable mode: 12-µA Quiescent Current
  • Extended Temperature Operation: –40°C to +125°C
  • Wide Supply Range: 3 V to 12.6 V
  • High Input Impedance: 325 MΩ
  • Voltage Noise:
    • Input-Referred (f ≥ 5 kHz): 2.3 nV/√ Hz
    • Output-Referred (f ≥ 10 kHz): 8.3 nV/√ Hz
  • Differential Output Offset: ±700 µV (Maximum)
  • Output Offset Drift: ±1.5 µV/°C (Typical)
  • A2 Bias Current Cancellation, IB: ±5 nA (Typical)
  • Gain-Bandwidth Product: 400 MHz
  • Small-Signal Bandwidth: 44 MHz (G = 2 V/V)
  • Slew Rate: 140 V/µs
  • HD2, HD3 (VOD = 10 VPP, 50 kHz): –122 dBc, –140 dBc
  • Rail-to-Rail Output:
    • High Linear Output Current: 60 mA (Typical)
  • Quiescent Current: 3.1 mA
  • Disable mode: 12-µA Quiescent Current
  • Extended Temperature Operation: –40°C to +125°C

The OPA862 is a single-ended to differential analog-to-digital converter (ADC) driver with high input impedance for directly interfacing with sensors. The device only consumes 3.1-mA quiescent current for an output-referred noise density of 8.3 nV/√ Hz in a gain of 2-V/V configuration. A fully differential amplifier configured in a gain of 1 V/V with 1-kΩ resistors must be less than 1 nV/√ Hz to achieve the OPA862 equivalent output-referred noise density of 8.3 nV/√ Hz. The OPA862 can be configured for other gains using external resistors. The device has a large gain-bandwidth product of 400 MHz and a slew rate of 140 V/µs. This yields exceptional linearity and fast-settling, 18-bit performance over comparable single-ended-to-differential ADC drivers. The device includes a reference input pin for setting the output common-mode voltage.

The OPA862 is fully characterized to operate over a wide supply range of 3 V to 12.6 V, and features a rail-to-rail output stage. The device is fabricated using Texas Instruments’ proprietary, high-speed, silicon-germanium (SiGe) process and achieves exceptional distortion performance for 18-bit systems. The device includes a disable mode that consumes only 12-µA quiescent current in power-down state.

The OPA862 is rated to work over the extended industrial temperature range of –40°C to +125°C.

The OPA862 is a single-ended to differential analog-to-digital converter (ADC) driver with high input impedance for directly interfacing with sensors. The device only consumes 3.1-mA quiescent current for an output-referred noise density of 8.3 nV/√ Hz in a gain of 2-V/V configuration. A fully differential amplifier configured in a gain of 1 V/V with 1-kΩ resistors must be less than 1 nV/√ Hz to achieve the OPA862 equivalent output-referred noise density of 8.3 nV/√ Hz. The OPA862 can be configured for other gains using external resistors. The device has a large gain-bandwidth product of 400 MHz and a slew rate of 140 V/µs. This yields exceptional linearity and fast-settling, 18-bit performance over comparable single-ended-to-differential ADC drivers. The device includes a reference input pin for setting the output common-mode voltage.

The OPA862 is fully characterized to operate over a wide supply range of 3 V to 12.6 V, and features a rail-to-rail output stage. The device is fabricated using Texas Instruments’ proprietary, high-speed, silicon-germanium (SiGe) process and achieves exceptional distortion performance for 18-bit systems. The device includes a disable mode that consumes only 12-µA quiescent current in power-down state.

The OPA862 is rated to work over the extended industrial temperature range of –40°C to +125°C.
filter Find other Fully differential amplifiers
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 3
Top documentation Type Title Format options Date
* Data sheet OPA862 High Input Impedance, Single-Ended to Differential ADC Driver datasheet (Rev. C) PDF | HTML 19 Aug 2020
Application brief Why Use an FDA to Drive an ADC? PDF | HTML 08 Jan 2026
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

OPA862DEVM — OPA862 evaluation module

The OPA862DEVM is an evaluation module for the single OPA862 amplifier in the D package. This evaluation module is designed to quickly and easily demonstrate the functionality and versatility of the amplifier. The EVM is ready to connect to power, signal sources, and test instruments through the (...)
User guide: PDF
Not available on TI.com
Simulation model

OPA862 PSpice Model (Rev. A)

SBOMB77A.ZIP (47 KB) - PSpice Model
Download
Simulation model

OPA862 TINA-TI Spice Model (Rev. C)

SBOMAZ9C.TSC (34 KB) - TINA-TI Spice Model
Download
Calculation tool

ANALOG-ENGINEER-CALC — PC software 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 (...)

Supported products & hardware

Supported products & hardware
Launch Download
Calculation tool

SBOR022 — TI FDA Calculator

Supported products & hardware

Supported products & hardware
Download
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 (...)
Request
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
View Options
Package Pins CAD symbols, footprints & 3D models
SOIC (D) 8 Ultra Librarian
WSON (DTK) 8 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

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