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Texas Instruments OPA2863AIDSNR
- Part No.:
- OPA2863AIDSNR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-UFDFN Exposed Pad
- Datasheet:
-
OPA2863AIDSNR.pdf
- Description:
- DUAL, HIGH-PRECISION, LOW-POWER,
- Quantity:
- Payment:
- Shipping:
Inventory:3,927
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Product details
Overview
OPA2863AIDSNR from Texas Instruments is a dual-channel, rail-to-rail input/output, unity-gain stable voltage-feedback operational amplifier optimized for precision, low-power signal conditioning. It delivers 50MHz gain-bandwidth product, 100V/µs slew rate, and 95µV maximum input offset voltage across –40°C to +125°C, enabling high-accuracy ADC driver and reference buffer applications in battery-powered instrumentation.
For engineers reviewing the OPA2863AIDSNR datasheet, OPA2863AIDSNR pinout, OPA2863AIDSNR application, or OPA2863AIDSNR equivalent, key selection criteria include its 800µA/channel quiescent current at 2.7–12.6V supply, 6.3nV/√Hz input voltage noise, overload power limiting, and output short-circuit protection - all in a 10-pin USON (DSN) package with exposed thermal pad.
Technical Context
The OPA2863AIDSNR implements a bipolar-input voltage-feedback architecture with matched rail-to-rail input stage across full common-mode range, preserving gain-bandwidth and noise performance. Its auxiliary input stage supports precision DC coupling while maintaining 120dB CMRR at low frequencies and 120dB PSRR under ±0.6V supply variation.
It integrates two independent amplifiers with dedicated power-down pins (PD1/PD2), each enabling <30µA shutdown current and sub-10µs turn-on/turn-off timing. The device operates from single 2.7–12.6V or split ±1.35–±6.3V supplies, with input common-mode range extending 0.2V beyond rails and output swing within 150mV of rails at 30mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 50MHz - enables stable unity-gain operation with bandwidth sufficient for 14-bit SAR ADC sampling up to 2.5MSPS. |
| Input offset voltage (max) | 95µV - ensures ≤0.0015% full-scale error in 14-bit systems with 3.3V reference. |
| Quiescent current per channel | 800µA (typ) - supports continuous operation in battery-powered devices with multi-year runtime on coin cells. |
| Slew rate | 100V/µs - sustains clean 2VPP signals at 20kHz without distortion, meeting HD2/HD3 ≤–129/–138dBc requirements. |
| Input voltage noise | 6.3nV/√Hz - minimizes added noise in photodiode TIA and low-side current sensing below 100kHz. |
| Operating temperature | –40°C to +125°C - qualified for automotive under-hood and industrial motor control environments. |
| Rail-to-rail I/O | Input extends VS– –0.2V to VS+ +0.2V; output swings within 150mV of rails - maximizes dynamic range in low-voltage 3.3V systems. |
Pinout & Package
The OPA2863AIDSNR is housed in a 10-pin USON (DSN) package with 2.0mm × 2.0mm footprint and exposed thermal pad. This thermally enhanced package achieves 52.4°C/W junction-to-ambient resistance and requires soldering the thermal pad to a PCB ground plane for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT1 | Amplifier 1 output | Drives ADC input or reference node; capable of sourcing/sinking 30mA linearly with <1mV offset shift. |
| VIN1– | Amplifier 1 inverting input | Accepts feedback network; input bias current ≤0.73µA ensures minimal error in high-Z gain-setting resistors. |
| VIN1+ | Amplifier 1 noninverting input | Connects to sensor or reference; common-mode range includes rail extremes for single-supply interfacing. |
| VS– | Negative supply | Ground reference in single-supply configs; must be decoupled with 0.1µF ceramic capacitor near pin. |
| VS+ | Positive supply | Supports 2.7–12.6V; PSRR ≥100dB reduces sensitivity to supply ripple in noisy embedded systems. |
| VIN2– | Amplifier 2 inverting input | Independent channel for dual-path signal conditioning; crosstalk ≤–120dBc at 1MHz prevents inter-channel interference. |
| VIN2+ | Amplifier 2 noninverting input | Enables simultaneous differential sensing or active filtering; matched input offset drift ≤1.2µV/°C maintains channel tracking. |
| VOUT2 | Amplifier 2 output | Provides second analog path without external components; output short-circuit protected to ±45mA. |
| PD1 | Amplifier 1 power-down control | Logic-high (>VS+ – 0.5V) enables; logic-low ( |
| PD2 | Amplifier 2 power-down control | Independent enable/disable allows asymmetric power management - e.g., keep VOUT1 active while sleeping VOUT2 during idle cycles. |
Key Features
| Feature | Design Value |
|---|---|
| Overload power limiting | Prevents IQ increase during output saturation, avoiding thermal runaway in battery-operated systems with intermittent overloads. |
| Output short-circuit protection | Withstands indefinite short to either rail at –40°C to +125°C without latch-up or parametric shift - eliminates need for external current-limiting resistors. |
| Rail-to-rail input stage matching | Maintains consistent GBWP and noise across full input common-mode range (VS– –0.2V to VS+ +0.2V), enabling accurate level-shifting in wide-dynamic-range sensors. |
| Low input offset drift | ≤1.2µV/°C max ensures <0.1mV total drift over 165°C span - critical for uncalibrated industrial temperature transmitters. |
| Dual independent power-down | Sub-10µs enable/disable timing and <30µA shutdown current per channel support ultra-low-duty-cycle wake-sleep architectures. |
Applications
| Low-Power SAR ADC Driver | ADC Reference Buffer |
|---|---|
Use Scenario: Driving ADS7057 14-bit, 2.5MSPS SAR ADC input with 2VPP signal at 20kHz. IC Role / Device Role / Timing Role: Precision gain stage and settling accelerator; provides 100V/µs slew rate and 50ns 0.1% settling to meet ADC aperture uncertainty. Use Value: Eliminates external RC filter needed with slower op-amps, reducing BOM count and board space while maintaining SNR >85dB. | Use Scenario: Buffering REF1933 3.3V reference for multiple ADCs and DACs in portable data loggers. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage follower; supplies up to 30mA with <1mV load regulation error. Use Value: Prevents reference droop under dynamic load, ensuring <0.01% full-scale accuracy across temperature and battery discharge. |
| Photodiode TIA Interface | Inductive Sensing |
Use Scenario: Transimpedance amplifier for 1nA–10µA photodiode currents in optical smoke detectors. IC Role / Device Role / Timing Role: Low-noise current-to-voltage converter; 6.3nV/√Hz input voltage noise dominates over photodiode dark current noise. Use Value: Enables detection of sub-100pA photocurrents with 16-bit resolution, improving smoke particle sensitivity by 3× vs. higher-noise alternatives. | Use Scenario: Signal conditioning for 100kHz resonant inductive position sensors in automotive throttle bodies. IC Role / Device Role / Timing Role: High-bandwidth AC-coupled amplifier; 105MHz small-signal bandwidth preserves phase integrity at fundamental frequency. Use Value: Supports <0.1° angular resolution at 100kHz carrier, meeting ASIL-B functional safety timing constraints without external compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision, low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2863AIDR | Same silicon, SOIC-8 package (D); no power-down pins; RθJA = 120°C/W vs. DSN's 52.4°C/W. | Lacks independent channel shutdown; unsuitable for ultra-low-power duty-cycled designs requiring <30µA sleep current. | Select OPA2863AIDR only when board space permits larger SOIC and thermal budget allows higher junction temperature rise. |
| OPA2837IRUGR | Lower 4.7nV/√Hz noise, 105MHz SSBW, but NRI/RRO input (no rail-to-rail common-mode) and no power-down feature. | Cannot interface directly to 0V-referenced sensors in single-supply systems; lacks overload power limiting. | Choose OPA2837IRUGR only when lowest noise dominates and input common-mode stays >0.2V above VS–, with fixed supply conditions. |
Compared with OPA2863AIDSNR, the OPA2863AIDR trades thermal efficiency and power-down capability for legacy SOIC compatibility, while OPA2837IRUGR sacrifices rail-to-rail input and protection features for marginally better noise and bandwidth - making OPA2863AIDSNR the sole choice for ruggedized, battery-constrained, wide-input-range precision analog front-ends.
Availability
OPA2863AIDSNR is available at Aetrix Electronics and suitable for low-power SAR ADC drivers, photodiode TIAs, and inductive position sensors requiring stable component supply across automotive, industrial, and portable instrumentation programs.
Supply support for OPA2863AIDSNR 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 and signal chain solutions.
The OPAx863A family was designed specifically for high-accuracy, low-power analog front-ends in battery-operated test equipment, medical sensors, and industrial IoT nodes - emphasizing rail-to-rail operation, thermal stability, and integrated protection.
FAQ
What is the maximum supply voltage for the OPA2863AIDSNR?
The OPA2863AIDSNR supports a total supply voltage range of 2.7V to 12.6V, corresponding to single-supply operation from 2.7V to 12.6V or split-supply operation from ±1.35V to ±6.3V. Absolute maximum rating is 13V between VS+ and VS–; exceeding this risks permanent damage. Operation at 12.6V is fully characterized per datasheet Section 6.3.
Does the OPA2863AIDSNR support true rail-to-rail input with a 3.3V single supply?
Yes, the OPA2863AIDSNR supports rail-to-rail input with a 3.3V single supply: its input common-mode voltage range extends from VS– – 0.2V (–0.2V) to VS+ + 0.2V (3.5V). This allows direct interfacing to 0V-referenced sensors and digital logic outputs without level-shifting circuitry, as verified in Section 6.7 Electrical Characteristics.
How does the power-down feature of the OPA2863AIDSNR reduce system power consumption?
The OPA2863AIDSNR's PD1 and PD2 pins reduce quiescent current per channel to ≤35µA (at –40°C to +125°C) when driven below VS+ – 1.5V. With typical 800µA active current, this yields >95% per-channel power reduction during idle periods - essential for battery-powered sensor nodes operating at <0.1% duty cycle, as detailed in Section 6.6 Power Down.
Can the OPA2863AIDSNR drive a 2kΩ load while maintaining specified DC accuracy?
Yes, the OPA2863AIDSNR maintains specified DC accuracy driving 2kΩ loads: its open-loop gain is ≥110dB (min) at ±5V supply, and output voltage swing remains within 150mV of rails at ±30mA. Linear output drive is guaranteed to ±2.5V with ΔVOS < 1mV, ensuring <0.04% gain error in unity-gain configurations per Section 6.6 DC PERFORMANCE.
What thermal design considerations apply to the OPA2863AIDSNR's DSN package?
The OPA2863AIDSNR's 10-pin USON package requires connection of the exposed thermal pad to a PCB ground plane for effective heat dissipation. With RθJA = 52.4°C/W and RθJB = 25.5°C/W, thermal performance depends critically on copper area and via count under the pad. Section 6.5 Thermal Information specifies minimum 4× thermal vias (0.3mm diameter) to inner ground layers for reliable operation at full 125°C ambient.
OPA2863AIDSNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- Push-Pull, Rail-to-Rail
- Slew Rate:
- 100V/µs
- Gain Bandwidth Product:
- 50 MHz
- -3db Bandwidth:
- 105 MHz
- Current - Input Bias:
- 300 nA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 800µA (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:
- 10-SON (3x3)
OPA2863AIDSNR FAQ
1.How can I place an order for OPA2863AIDSNR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2863AIDSNR 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 OPA2863AIDSNR reliable?
The price and inventory of OPA2863AIDSNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2863AIDSNR is usually 5 days.
3.What payment methods are accepted for OPA2863AIDSNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2863AIDSNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2863AIDSNR?
OPA2863AIDSNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2863AIDSNR 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 OPA2863AIDSNR?
For technical support, including OPA2863AIDSNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2863AIDSNR requirements.
6.How does Aetrix verify that OPA2863AIDSNR is sourced from the original manufacturer or authorized distributors?
All OPA2863AIDSNR 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 OPA2863AIDSNR meets industry standards.
7.What is the process for return or replacement of OPA2863AIDSNR?
All OPA2863AIDSNR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2863AIDSNR, 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 OPA2863AIDSNR part is unused and in its original packaging.
Return procedure for OPA2863AIDSNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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