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Product details

Parameters

Architecture Differential Amplifier Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 3 Total supply voltage (Max) (+5V=5, +/-5V=10) 12.6 GBW (Typ) (MHz) 400 BW @ Acl (MHz) 44 Acl, min spec gain (V/V) 2 Slew rate (Typ) (V/us) 140 Vn at flatband (Typ) (nV/rtHz) 2.3 Vn at 1 kHz (Typ) (nV/rtHz) 2.3 Iq per channel (Typ) (mA) 3.1 Vos (offset voltage @ 25 C) (Max) (mV) 0.325 Rail-to-rail Out Features Shutdown Rating Catalog Operating temperature range (C) -40 to 125 CMRR (Typ) (dB) 120 Input bias current (Max) (pA) 3100000 Offset drift (Typ) (uV/C) 0.5 Output current (Typ) (mA) 60 2nd harmonic (dBc) -122 3rd harmonic (dBc) -140 @ MHz 0.05 open-in-new Find other High-speed op amps (GBW>=50MHz)

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 open-in-new Find other High-speed op amps (GBW>=50MHz)

Features

  • 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 (typ)
  • Quiescent current: 3.1 mA
  • Disable mode: 12-µA quiescent current
  • Extended temperature operation:
    –40°C to +125°C

All trademarks are the property of their respective owners.

open-in-new Find other High-speed op amps (GBW>=50MHz)

Description

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.

open-in-new Find other High-speed op amps (GBW>=50MHz)
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Preproduction samples are available (XOPA862IDTKT). Request now

Technical documentation

= Featured
No results found. Please clear your search and try again. View all 7
Type Title Date
* Datasheet OPA862 High Input Impedance, Single-Ended to Differential ADC Driver datasheet (Rev. B) Feb. 14, 2020
User guides OPA862D Evaluation Module Aug. 05, 2019
Technical articles How to reduce distortion in high-voltage, high-frequency signal generation for AWGs Oct. 30, 2018
Technical articles What are the advantages of using JFET-input amplifiers in high-speed applications? Jun. 18, 2018
Technical articles How to lay out a PCB for high-performance, low-side current-sensing designs Feb. 06, 2018
Technical articles Low-side current sensing for high-performance cost-sensitive applications Jan. 22, 2018
Application notes Noise Analysis for High Speed Op Amps (Rev. A) Jan. 17, 2005

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$99.00
Description
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 use (...)
Features
  • Single-ended high impedance input with differential output
  • Configurable gain resistors with optional additional feedback connection
  • Output transformer included to interface with single-ended test equipment
  • Fully configurable power-down and reference voltage inputs

Design tools & simulation

SIMULATION MODELS Download
SBOMAZ9C.TSC (34 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOMB77.ZIP (25 KB) - PSpice Model
SIMULATION TOOLS Download
SPICE-based analog simulation program
TINA-TI 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 (...)
document-generic User guide
CALCULATION TOOLS Download
Analog engineer's calculator
ANALOG-ENGINEER-CALC — 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 (...)
Features
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)
CALCULATION TOOLS Download
Voltage Divider Determines A Set of Resistors for a Voltage Divider
VOLT-DIVIDER-CALC 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.

(...)

CAD/CAE symbols

Package Pins Download
(DTK) 8 View options
SOIC (D) 8 View options

Ordering & quality

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