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Texas Instruments OPA4863PWR
- Part No.:
- OPA4863PWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4863PWR.pdf
- Description:
- QUAD, LOW-POWER, 110-MHZRRIO VOL
- Quantity:
- Payment:
- Shipping:
Inventory:1,826
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Product details
Overview
OPA4863PWR from Texas Instruments is a quad-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, 5.9-nV/√Hz input voltage noise, and operates from 2.7-V to 12.6-V supply with 700-µA/ch quiescent current - enabling use in SAR ADC drivers and photodiode transimpedance amplifiers.
For engineers reviewing the OPA4863PWR datasheet, OPA4863PWR pinout, OPA4863PWR application, or OPA4863PWR equivalent, this page provides verified specifications, TSSOP-14 package layout, real-world application circuits (e.g., low-side current sensing, ultrasonic flow meter front-end), and validated alternative op-amps with documented functional trade-offs.
Technical Context
The OPA4863PWR employs a bipolar input stage with rail-to-rail common-mode input range extending 0.2 V beyond both rails, maintaining consistent gain-bandwidth and noise performance across full input dynamic range. Its unity-gain stable architecture supports fast settling (57 ns to 0.1%) and low distortion (–129 dBc HD2 at 20 kHz) under 2-VPP output swing.
Each of the four independent amplifiers features dedicated power-down control via logic-level inputs, achieving ≤1.5-µA/quiescent current per channel with 6.5-µs turn-on time. Integrated overload power limiting and short-circuit protection ensure robust operation in portable and industrial environments without external current limiting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-gain bandwidth | 110 MHz - enables stable closed-loop operation at G = 1 with minimal phase margin degradation |
| Gain-bandwidth product | 50 MHz - defines maximum usable gain at given frequency (e.g., G = 10 up to 5 MHz) |
| Slew rate | 105 V/µs - supports clean 2-VPP output transitions at ≥17 MHz large-signal bandwidth |
| Input voltage noise | 5.9 nV/√Hz - critical for low-noise sensor interfaces like photodiode TIAs |
| Quiescent current per channel | 700 µA (typical) - allows four amplifiers to operate on <3 mA total supply current |
| Supply voltage range | 2.7 V to 12.6 V - compatible with single-supply 3.3-V systems and dual ±5-V rails |
| Operating temperature | –40°C to +125°C - qualified for automotive and industrial ambient conditions |
Pinout & Package
Packaged in a 14-pin TSSOP (PW), the OPA4863PWR integrates four independent op-amps with shared power rails and individual inverting/non-inverting inputs and outputs - no dedicated power-down pins per channel (unlike OPA2863 RUN variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT1 (Pin 1) | Amplifier 1 output | Low-impedance buffered output capable of ±30-mA linear drive into 2-kΩ load |
| VIN1– (Pin 2) | Amplifier 1 inverting input | Differential input node with 200-kΩ || 0.5-pF impedance; accepts signals down to VS– – 0.2 V |
| VIN1+ (Pin 3) | Amplifier 1 noninverting input | High-impedance input with 650-MΩ || 0.8-pF common-mode impedance |
| VS+ (Pin 4) | Positive supply rail | Accepts 2.7–12.6 V; powers all four amplifiers; must be decoupled locally |
| VIN2+ (Pin 5) | Amplifier 2 noninverting input | Independent input for second amplifier; matched offset drift (±1 µV/°C) with VIN1± |
| VIN2– (Pin 6) | Amplifier 2 inverting input | Matches VIN1– electrical characteristics; supports differential pair configurations |
| VOUT2 (Pin 7) | Amplifier 2 output | Electrically isolated from VOUT1; crosstalk < –124 dBc at 1 MHz |
| VOUT3 (Pin 8) | Amplifier 3 output | Third independent output; same drive strength and noise specs as VOUT1/VOUT2 |
| VIN3+ (Pin 10) | Amplifier 3 noninverting input | Third amplifier input; identical CMRR (100–120 dB) and PSRR (100–120 dB) to others |
| VIN3– (Pin 9) | Amplifier 3 inverting input | Supports wide common-mode range (VS– – 0.2 V to VS+ + 0.2 V) |
| VIN4+ (Pin 12) | Amplifier 4 noninverting input | Fourth amplifier input; maintains rail-to-rail input operation at 3-V supply |
| VIN4– (Pin 13) | Amplifier 4 inverting input | Enables simultaneous multi-channel signal conditioning without inter-channel coupling |
| VOUT4 (Pin 14) | Amplifier 4 output | Final output; supports 0.1-dB flatness up to 15 MHz at 20-mVPP output |
| VS– (Pin 11) | Negative supply rail | Ground reference for single-supply operation or negative rail for dual-supply; requires local bypassing |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in 3.3-V systems - input accepts signals from VS– – 0.2 V to VS+ + 0.2 V; output swings within 140 mV of each rail |
| Power-down mode | Reduces per-channel quiescent current to ≤1.5 µA (3-V supply), extending battery life in intermittent-sensing applications |
| Overload power limiting | Prevents IQ escalation during output saturation - avoids thermal runaway in current-sense amplifier fault conditions |
| Output short-circuit protection | Withstands indefinite short to either supply rail while limiting junction temperature rise - eliminates need for external foldback circuitry |
| Low distortion at 20 kHz | –129 dBc HD2 / –138 dBc HD3 at 2-VPP ensures fidelity in audio and ultrasonic signal chains |
Applications
| Low-Power SAR ADC Driver | Photodiode Transimpedance Amplifier |
|---|---|
Use Scenario: Driving the input of a 16-bit, 1-MSPS successive-approximation register (SAR) ADC in a portable data acquisition system powered by a 3.3-V Li-ion battery. IC Role / Device Role / Timing Role: OPA4863PWR acts as a unity-gain buffer and charge kicker, settling to 0.1% in 57 ns while delivering low THD to preserve ENOB. Use Value: 700-µA/ch quiescent current allows four-channel simultaneous sampling without exceeding 3-mA system budget; rail-to-rail output ensures full-scale ADC utilization. | Use Scenario: Converting nanoampere-level photocurrent from a silicon PIN diode into a measurable voltage in a handheld spectrophotometer. IC Role / Device Role / Timing Role: OPA4863PWR serves as transimpedance amplifier with 5.9-nV/√Hz input noise and 110-MHz bandwidth to resolve fast optical pulses. Use Value: Low input bias current (0.3–0.73 µA typ.) minimizes dark-current error; high GBWP enables stable feedback with >10-MΩ transimpedance gains. |
| Low-Side Current Sensing | Ultrasonic Flow Meter Front-End |
Use Scenario: Measuring motor phase current in an industrial BLDC inverter using shunt resistor placed between load and ground. IC Role / Device Role / Timing Role: OPA4863PWR amplifies mV-level differential voltage across 5-mΩ shunt with rail-to-rail input capability down to 0 V common-mode. Use Value: Input common-mode range includes VS– – 0.2 V, enabling accurate sensing at 0 V; overload limiting prevents thermal stress during overcurrent events. | Use Scenario: Conditioning echo signals from piezoelectric transducers operating at 1–2 MHz in a utility water meter. IC Role / Device Role / Timing Role: OPA4863PWR provides programmable gain and filtering before digitization by a high-speed ΔΣ ADC. Use Value: 17-MHz large-signal bandwidth supports clean amplification of 1-MHz bursts; low 1/f noise corner (25 Hz) preserves signal integrity across duty-cycle modulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-feedback op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4832IPW | Lower 3.5-nV/√Hz noise, 250-MHz GBWP, but 3.5-mA/ch IQ - 5× higher power consumption | Better for ultra-low-noise, high-frequency applications where power is secondary | Select OPA4832IPW only when noise floor <4 nV/√Hz is mandatory and thermal headroom permits 14-mA total quiescent draw |
| LMH6644MT | Higher 130-V/µs slew rate and 65-MHz GBWP, but NRI/RRO input (no rail-to-rail input below VS– + 1.2 V) | Unsuitable for true 0-V input sensing; requires level-shifting in low-side current monitor designs | Choose LMH6644MT only for high-speed, non-rail-to-rail input applications where supply headroom exceeds 2.4 V |
Compared with OPA4863PWR, OPA4832IPW trades 5× higher power for 40% lower noise and 5× higher bandwidth, while LMH6644MT offers faster transient response but lacks rail-to-rail input - making OPA4863PWR uniquely balanced for battery-constrained, wide-dynamic-range analog front-ends.
Availability
OPA4863PWR is available at Aetrix Electronics and suitable for low-power SAR ADC driver, photodiode TIA interface, and ultrasonic flow meter applications requiring stable component supply, long-term manufacturability, and guaranteed lifecycle support through 2030.
Supply support for OPA4863PWR 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 op-amps and signal-chain solutions.
The OPAx863 family was designed specifically for high-speed, low-power analog signal conditioning in portable instrumentation, industrial sensing, and medical diagnostics - prioritizing rail-to-rail operation, low IQ, and robustness in real-world PCB layouts.
FAQ
What is the maximum supply voltage for OPA4863PWR?
The absolute maximum supply voltage for OPA4863PWR is 13 V across VS+ and VS– terminals. The recommended operating range is 2.7 V to 12.6 V. Exceeding 13 V risks permanent damage per the Absolute Maximum Ratings table in the SBOS982J datasheet. For reliable long-term operation, maintain VS+ – VS– ≤ 12.6 V under all conditions including transient spikes.
Does OPA4863PWR support true rail-to-rail input at 3-V supply?
Yes, OPA4863PWR supports rail-to-rail input operation at 3-V supply, with input common-mode voltage range specified from VS– – 0.2 V to VS+ + 0.2 V. At VS+ = 3 V and VS– = 0 V, this enables valid input signals from –0.2 V to +3.2 V - covering the full 0–3 V range and beyond, critical for low-side current sensing and single-supply sensor interfaces.
How many independent amplifiers does OPA4863PWR contain?
OPA4863PWR contains four fully independent, internally compensated voltage-feedback operational amplifiers in a single 14-pin TSSOP package. Each amplifier has dedicated input pins (VINx+, VINx–) and output pins (VOUTx), with shared VS+ and VS– supply connections. No channel-to-channel power-down control is provided - power-down functionality is not implemented in the PW (TSSOP-14) variant.
What is the typical quiescent current per channel for OPA4863PWR at 25°C?
The typical quiescent current per channel for OPA4863PWR is 700 µA at TA = 25°C and VS = 10 V, and 690 µA at VS = 3 V. Over temperature (–40°C to +125°C), maximum IQ rises to 1280 µA at 10 V and 1180 µA at 3 V. This low IQ enables four-channel operation within tight system power budgets - e.g., <3 mA total at room temperature.
Is OPA4863PWR unity-gain stable?
Yes, OPA4863PWR is explicitly unity-gain stable, as confirmed in the device description and Features section of the SBOS982J datasheet. It achieves 110-MHz small-signal bandwidth and 50-MHz gain-bandwidth product under G = 1 V/V configuration with RF = 0 Ω, and exhibits <1 dB peaking in frequency response - eliminating need for external compensation in buffer or gain-of-one applications.
OPA4863PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Standard
- Number of Circuits:
- 4
- Output Type:
- Push-Pull, 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 (x4 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:
- 14-TSSOP
OPA4863PWR FAQ
1.How can I place an order for OPA4863PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4863PWR 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 OPA4863PWR reliable?
The price and inventory of OPA4863PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4863PWR is usually 5 days.
3.What payment methods are accepted for OPA4863PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4863PWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4863PWR?
OPA4863PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4863PWR 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 OPA4863PWR?
For technical support, including OPA4863PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4863PWR requirements.
6.How does Aetrix verify that OPA4863PWR is sourced from the original manufacturer or authorized distributors?
All OPA4863PWR 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 OPA4863PWR meets industry standards.
7.What is the process for return or replacement of OPA4863PWR?
All OPA4863PWR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4863PWR, 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 OPA4863PWR part is unused and in its original packaging.
Return procedure for OPA4863PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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