Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Texas Instruments OPA2863IDGKR

Name: OPA2863IDGKR
Brand: Texas Instruments
SKU: OPA2863IDGKR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: OPA2863IDGKR

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: OPA2863IDGKR.pdf

Description:: IC OPAMP VFB 2 CIRCUIT 8VSSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,870

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

OPA2863IDGKR from Texas Instruments is a dual-channel, rail-to-rail input/output voltage-feedback operational amplifier optimized for low-power, high-speed signal conditioning in battery-powered and precision analog systems. It delivers 110-MHz unity-gain bandwidth, 50-MHz gain-bandwidth product, 105-V/µs slew rate, and 5.9-nV/√Hz input voltage noise while consuming only 700 µA per channel at 10 V supply - enabling high-fidelity ADC driver and photodiode transimpedance amplifier functions.

For engineers reviewing the OPA2863IDGKR datasheet, OPA2863IDGKR pinout, OPA2863IDGKR application, or OPA2863IDGKR equivalent, this page provides verified technical context, package-specific pin mapping, real-world application implementation guidance, and validated alternative options for low-power, wideband op amp selection in industrial sensing and data acquisition designs.

Technical Context

The OPA2863IDGKR implements a bipolar-input voltage-feedback architecture with unity-gain stability and rail-to-rail input/output swing across 2.7 V to 12.6 V total supply range. Its input stage maintains matched gain-bandwidth and noise performance over full common-mode voltage range, supporting accurate signal amplification in single-supply portable systems.

Each channel integrates independent power-down control (PD1/PD2), overload power limiting to cap quiescent current during output saturation, and short-circuit protected output stage - delivering robust operation in ruggedized environments without external protection circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
Unity-gain bandwidth	110 MHz - enables stable gain-of-1 amplification up to RF and ultrasonic frequencies without phase margin loss.
Gain-bandwidth product	50 MHz - defines maximum usable closed-loop bandwidth at higher gains (e.g., 10 MHz at G = 5).
Slew rate	105 V/µs - supports clean 2-VPP output transitions at >17 MHz large-signal bandwidth with minimal distortion.
Input voltage noise	5.9 nV/√Hz - ensures low-noise signal integrity in photodiode TIAs and reference buffers where thermal noise dominates.
Quiescent current	700 µA per channel - allows dual-channel high-speed amplification in 3-V battery systems with sub-1.4-mW total dissipation.
Operating temperature	–40°C to +125°C - qualified for automotive under-hood, industrial motor control, and outdoor metering applications.
Power-down current	≤1.5 µA per channel - reduces system standby power by >99.8% when amplifiers are idle in energy-constrained IoT nodes.

Pinout & Package

DGK package is an 8-pin VSSOP (Very Small Outline Package) with 0.65-mm pitch, 3.0-mm × 3.0-mm body, and exposed thermal pad for enhanced thermal performance in space-constrained PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
VOUT1	Amplifier 1 output	Drives ADC input, reference buffer load, or next-stage filter with rail-to-rail swing and 30-mA linear output capability.
VIN1–	Amplifier 1 inverting input	Accepts feedback network or differential signal path; supports ±1-V differential input range with 1-V clamp diode limit.
VIN1+	Amplifier 1 noninverting input	Connects to sensor output, reference voltage, or high-impedance source; CMVR extends to within 200 mV of rails.
VS–	Negative supply pin	Ground reference for single-supply operation or negative rail in split-supply configurations; handles up to ±30 mA sink current.
VS+	Positive supply pin	Accepts 2.7–12.6 V total supply; PSRR ≥100 dB minimizes supply ripple coupling into amplified signal.
VIN2–	Amplifier 2 inverting input	Independent second channel input; matched offset drift (±1 µV/°C) enables dual-path synchronous sensing.
VIN2+	Amplifier 2 noninverting input	Supports separate signal path; input impedance (650 MΩ \|\| 0.8 pF) preserves high-Z source accuracy.
VOUT2	Amplifier 2 output	Provides second independent output; channel-to-channel crosstalk ≤–124 dBc at 1 MHz avoids interference in multi-channel DAQ.

Key Features

Feature	Design Value
Rail-to-rail input and output	Enables full dynamic range utilization in 3-V systems - input accepts signals from VS– – 0.2 V to VS+ + 0.2 V; output swings within 140 mV of each rail.
Independent power-down control	PD1 and PD2 pins allow selective shutdown of either amplifier with <6.5-µs turn-on time - critical for duty-cycled sensor interfaces.
Overload power limiting	Clamps quiescent current increase during saturated output conditions - prevents thermal runaway in current-sense amplifier fault modes.
Output short-circuit protection	Guarantees safe operation with continuous short to either supply rail - eliminates need for external current-limiting resistors in field-deployed equipment.
Low distortion at 20 kHz	HD2/HD3 = –129 dBc/–138 dBc (2-VPP) - meets audio-grade and metrology requirements for SAR ADC front-ends.

Applications

Low-Power SAR ADC Driver	Photodiode Transimpedance Amplifier
Use Scenario: Driving 16-bit SAR ADC inputs in portable medical devices with 3-V battery supply and strict power budget. IC Role / Device Role / Timing Role: Buffer and level-shift sensor output to match ADC input range while maintaining fast settling (<57 ns to 0.1%) and low noise. Use Value: 110-MHz bandwidth and 105-V/µs slew rate ensure full-scale step response fidelity; 5.9-nV/√Hz noise preserves SNR in sub-100-µV biomedical signals.	Use Scenario: Converting photocurrent from low-light optical sensors in gas analyzers or spectrophotometers. IC Role / Device Role / Timing Role: Transimpedance amplifier with programmable gain via feedback resistor; operates in single-supply 3-V configuration. Use Value: Rail-to-rail input accepts bias near ground; low input bias current (0.3–0.73 µA) minimizes dark-current error; overload limiting protects against LED overdrive transients.
Low-Side Current Sensing	Ultrasonic Flow Meter Signal Chain
Use Scenario: Measuring motor phase current in BLDC inverters using shunt resistor placed between load and ground. IC Role / Device Role / Timing Role: Differential amplifier rejecting common-mode voltage while amplifying mV-level shunt voltage with high CMRR (100–120 dB). Use Value: Input common-mode range includes ground (VS– – 0.2 V), enabling true low-side placement; 700-µA/channel IQ supports always-on monitoring in energy meters.	Use Scenario: Conditioning echo return signals in industrial ultrasonic flow meters operating at 1–5 MHz carrier frequencies. IC Role / Device Role / Timing Role: High-speed gain stage and active filter before envelope detection; requires wide bandwidth and low group delay variation. Use Value: 110-MHz small-signal bandwidth passes harmonics without attenuation; 0.1-dB flatness to 15 MHz ensures amplitude accuracy across pulse spectrum.

Low-Power SAR ADC Driver

Photodiode Transimpedance Amplifier

Use Scenario: Driving 16-bit SAR ADC inputs in portable medical devices with 3-V battery supply and strict power budget.

IC Role / Device Role / Timing Role: Buffer and level-shift sensor output to match ADC input range while maintaining fast settling (<57 ns to 0.1%) and low noise.

Use Value: 110-MHz bandwidth and 105-V/µs slew rate ensure full-scale step response fidelity; 5.9-nV/√Hz noise preserves SNR in sub-100-µV biomedical signals.

Use Scenario: Converting photocurrent from low-light optical sensors in gas analyzers or spectrophotometers.

IC Role / Device Role / Timing Role: Transimpedance amplifier with programmable gain via feedback resistor; operates in single-supply 3-V configuration.

Use Value: Rail-to-rail input accepts bias near ground; low input bias current (0.3–0.73 µA) minimizes dark-current error; overload limiting protects against LED overdrive transients.

Low-Side Current Sensing

Ultrasonic Flow Meter Signal Chain

Use Scenario: Measuring motor phase current in BLDC inverters using shunt resistor placed between load and ground.

IC Role / Device Role / Timing Role: Differential amplifier rejecting common-mode voltage while amplifying mV-level shunt voltage with high CMRR (100–120 dB).

Use Value: Input common-mode range includes ground (VS– – 0.2 V), enabling true low-side placement; 700-µA/channel IQ supports always-on monitoring in energy meters.

Use Scenario: Conditioning echo return signals in industrial ultrasonic flow meters operating at 1–5 MHz carrier frequencies.

IC Role / Device Role / Timing Role: High-speed gain stage and active filter before envelope detection; requires wide bandwidth and low group delay variation.

Use Value: 110-MHz small-signal bandwidth passes harmonics without attenuation; 0.1-dB flatness to 15 MHz ensures amplitude accuracy across pulse spectrum.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed, low-power op amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LMH6643MMX/NOPB	Higher 2.7-mA/channel IQ, 65-MHz GBWP, NRI/RRO input, 17-nV/√Hz noise	Better speed but 3.9× higher power; unsuitable for battery life-critical designs	Select when bandwidth >50 MHz is mandatory and supply headroom allows >2.7-mA per channel.
OPA2837IDGKT	Lower 0.6-mA/channel IQ, same 50-MHz GBWP, NRI/RRO input, 4.7-nV/√Hz noise, no power-down	No PD pins; slightly lower noise but lacks independent channel shutdown	Choose for ultra-low-power dual op amp where power-down functionality is not required.

Compared with LMH6643MMX/NOPB and OPA2837IDGKT, the OPA2863IDGKR uniquely balances 110-MHz unity-gain bandwidth, 700-µA/channel quiescent current, and dual independent power-down control - making it optimal for portable, multi-channel, duty-cycled analog front-ends requiring both speed and energy efficiency.

Availability

OPA2863IDGKR is available at Aetrix Electronics and suitable for low-power SAR ADC drivers, photodiode TIA interfaces, and ultrasonic flow meter signal chains requiring stable component supply across industrial, medical, and test equipment programs.

Supply support for OPA2863IDGKR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision amplifiers, data converters, and power management ICs.

The OPAx863 family was designed specifically for high-speed, low-power signal conditioning in portable instrumentation, industrial sensing, and battery-operated data acquisition - emphasizing rail-to-rail operation, power-down flexibility, and robustness in real-world EMI and overload conditions.

FAQ

What supply voltage range does the OPA2863IDGKR support?

The OPA2863IDGKR operates from a total supply voltage of 2.7 V to 12.6 V - supporting single-supply (e.g., 3 V or 5 V) and split-supply (e.g., ±5 V) configurations. At 3-V operation, it maintains 97-MHz small-signal bandwidth and 105-V/µs slew rate, making it ideal for coin-cell or Li-ion powered systems where headroom is constrained. The device's rail-to-rail input stage accepts common-mode voltages down to VS– – 0.2 V, enabling direct interfacing with ground-referenced sensors without level-shifting circuitry.

Does the OPA2863IDGKR include power-down functionality?

Yes, the OPA2863IDGKR features two independent power-down pins (PD1 and PD2), one per amplifier channel. When driven high (≥VS+ – 0.5 V), each amplifier operates normally; when pulled low (≤VS+ – 1.5 V), quiescent current drops to ≤1.5 µA per channel. Turn-on and turn-off delays are guaranteed ≤6.5 µs and ≤5 µs respectively at 3-V supply. This capability allows dynamic power gating in time-sliced sensor systems - for example, enabling one amplifier to condition a thermistor while the other remains off until a pressure sensor reading is required - reducing average system power without sacrificing responsiveness.

What is the input voltage noise density of the OPA2863IDGKR?

The OPA2863IDGKR has a flatband input voltage noise density of 5.9 nV/√Hz (typical at VS = 10 V), with a 1/f corner at 25 Hz. This value is confirmed across both 3-V and 10-V supply conditions and remains stable over temperature (–40°C to +125°C). In photodiode transimpedance amplifier applications, this low noise floor directly limits minimum detectable photocurrent - for example, with a 1-MΩ feedback resistor, the integrated noise over 100-kHz bandwidth is ~19 µV RMS, preserving resolution in low-light measurement systems. The noise specification applies identically to both channels in the OPA2863IDGKR.

Can the OPA2863IDGKR drive heavy capacitive loads?

The OPA2863IDGKR is unity-gain stable but exhibits degraded phase margin with increasing capacitive load - typical small-signal bandwidth drops from 110 MHz (no load) to ~20 MHz with 10-pF load and series resistance <200 Ω. For driving ADC inputs or cables, use a 200-Ω isolation resistor between OPA2863IDGKR output and load capacitance to restore stability and preserve transient response. The device's output stage delivers ±30 mA linear current and withstands continuous short-circuit to either rail, but sustained capacitive loading >100 pF without isolation may cause overshoot or ringing in step responses. Layout best practices (short traces, local bypassing) are essential for maintaining specified 57-ns 0.1% settling time.

What package type is used for the OPA2863IDGKR?

The OPA2863IDGKR uses the DGK package: an 8-pin VSSOP (Very Small Outline Package) with 0.65-mm lead pitch, 3.0-mm × 3.0-mm body dimensions, and exposed thermal pad. This package offers superior thermal performance (RθJA = 180.3°C/W) compared to SOIC-8 (120.0°C/W) and supports high-density PCB layouts in portable equipment. Pin compatibility is maintained with industry-standard VSSOP footprints, and the thermal pad must be soldered to a PCB copper pour for optimal junction-to-board heat transfer. The DGK variant is explicitly listed in TI's SBOS982J datasheet as a production-orderable option for OPA2863, distinct from SOIC-8 (D) and WQFN-10 (RUN) variants.

OPA2863IDGKR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: Voltage Feedback

Number of Circuits:: 2

Output Type:: Rail-to-Rail

Slew Rate:: 105V/µs

Gain Bandwidth Product:: 50 MHz

-3db Bandwidth:: 110 MHz

Current - Input Bias:: 300 nA

Voltage - Input Offset:: 400 µV

Current - Supply:: 700µA (x2 Channels)

Current - Output / Channel:: 45 mA

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 12.6 V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-VSSOP

OPA2863IDGKR FAQ

1.How can I place an order for OPA2863IDGKR through Aetrix?

Please submit a Request for Quotation (RFQ) for OPA2863IDGKR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for OPA2863IDGKR reliable?

The price and inventory of OPA2863IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2863IDGKR is usually 5 days.

3.What payment methods are accepted for OPA2863IDGKR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2863IDGKR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for OPA2863IDGKR?

OPA2863IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your OPA2863IDGKR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for OPA2863IDGKR?

For technical support, including OPA2863IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2863IDGKR requirements.

6.How does Aetrix verify that OPA2863IDGKR is sourced from the original manufacturer or authorized distributors?

All OPA2863IDGKR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OPA2863IDGKR meets industry standards.

7.What is the process for return or replacement of OPA2863IDGKR?

All OPA2863IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2863IDGKR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The OPA2863IDGKR part is unused and in its original packaging.

Return procedure for OPA2863IDGKR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…