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Texas Instruments OPA363AIDRG4
- Part No.:
- OPA363AIDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA363AIDRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,973
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Product details
Overview
OPA363AIDRG4 from Texas Instruments is a single, rail-to-rail input/output CMOS operational amplifier optimized for 1.8-V to 5.5-V single-supply operation. It delivers 7-MHz gain-bandwidth, 5-V/µs slew rate, and 90-dB typical CMRR, with output swing within 10 mV of rails. It serves as a precision microphone preamplifier or signal conditioner in battery-powered sensor interfaces.
For engineers reviewing the OPA363AIDRG4 datasheet, OPA363AIDRG4 pinout, OPA363AIDRG4 application, or OPA363AIDRG4 equivalent, key selection criteria include its shutdown capability (≤1 µA quiescent current), low 500-µV max input offset, 750-µA max supply current per channel, and SOT-23-6 package compatibility with space-constrained portable designs.
Technical Context
The OPA363AIDRG4 uses a complementary CMOS input stage that eliminates crossover distortion, enabling high differential linearity when driving ADCs without THD degradation. Its rail-to-rail input common-mode range extends from (V–) – 0.1 V to (V+) + 0.1 V, and output swings to within 10 mV of both supply rails under 10-kΩ load.
It features an active-low enable pin (pin 5 in SOT-23-6) that reduces quiescent current to <1 µA per channel in shutdown mode. The device is unity-gain stable and specified across –40°C to +125°C, supporting industrial and automotive sensor signal chains requiring robust low-voltage performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8 V to 5.5 V single supply - enables direct interface with Li-ion, coin-cell, or 3.3-V logic systems without level-shifting. |
| Gain-Bandwidth Product | 7 MHz - supports stable amplification of audio-band and fast-sensor signals up to ~1 MHz at moderate closed-loop gains. |
| Input Offset Voltage | 500 µV maximum - ensures ≤0.5-mV DC error in 1×–10× gain stages for precision DC-coupled sensing. |
| Slew Rate | 5 V/µs - allows clean 20-kHz full-scale sine-wave output with <0.002% THD+N at G = 1. |
| CMRR | 90 dB typical - rejects common-mode noise from shared ground paths or noisy power rails in mixed-signal PCBs. |
| Quiescent Current | 750 µA maximum per channel - balances speed and battery life in always-on wearable or IoT edge nodes. |
| Shutdown Current | 0.9 µA maximum - enables microamp-level system sleep states while retaining fast wake-up (<20 µs turn-on time). |
Pinout & Package
OPA363AIDRG4 is packaged in a 6-pin SOT-23 (DBV) with 2.60 mm × 1.60 mm body size and exposed pad thermal enhancement. Pin 1 is output; pin 2 is V–; pin 3 is +IN; pin 4 is –IN; pin 5 is Enable (active-low); pin 6 is V+.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Amplifier output - drives ADC inputs, filters, or downstream buffers; rail-to-rail swing supports full dynamic range utilization. |
| 2 | V– | Negative supply terminal - tied to ground in single-supply configurations; establishes reference for input common-mode range. |
| 3 | +IN | Noninverting input - accepts high-impedance sensor signals (e.g., electret mic bias via RBIAS) with pA-level input bias current. |
| 4 | –IN | Inverting input - used for feedback network connection; supports unity-gain buffer or inverting gain configurations. |
| 5 | Enable | Active-low shutdown control - pulls low to reduce supply current to <1 µA; compatible with GPIOs or power sequencers. |
| 6 | V+ | Positive supply terminal - accepts 1.8–5.5 V; internal charge pump enables rail-to-rail input operation even at 1.8 V. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Input common-mode range includes both supplies; output swings to within 10 mV of V+ and V– - maximizes signal headroom in low-voltage systems. |
| No phase reversal | Eliminates output latch-up during input overdrive - critical for sensor front-ends where transients exceed supply rails. |
| Low 1/f noise | 10 µVPP integrated noise (0.1–10 Hz) - preserves SNR in DC-coupled thermistor or strain-gauge amplifiers. |
| High PSRR | 330 µV/V input offset change vs supply variation - maintains accuracy despite battery voltage sag or LDO ripple. |
| Unity-gain stable | No external compensation required - simplifies layout and reduces BOM count in compact footprint applications. |
Applications
| Microphone Preamplifier | Portable Data Acquisition |
|---|---|
|
Use Scenario: Amplifying weak AC-coupled signals from electret condenser microphones in voice-controlled wearables. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op amp configured as noninverting amplifier with 10–100× gain and 20-Hz high-pass filtering. Use Value: 500-µV max offset and 90-dB CMRR reject power-supply noise and ground bounce, preserving speech clarity at 1.8-V operation. |
Use Scenario: Conditioning analog outputs from temperature, pressure, or gas sensors before 12-bit ADC sampling in handheld test meters. IC Role / Device Role / Timing Role: Precision buffer and gain stage with shutdown control synchronized to measurement cycles. Use Value: 750-µA quiescent current and <20-µs wake-up enable >100-hour battery life while maintaining µV-level DC accuracy. |
| Industrial Process Monitoring | Automotive Cabin Sensing |
|
Use Scenario: Signal conditioning for 4–20-mA loop receivers or RTD bridges in factory-floor PLC I/O modules. IC Role / Device Role / Timing Role: Rail-to-rail input amplifier with programmable gain and ESD-hardened inputs for harsh environments. Use Value: ±2000-V HBM ESD rating and –40°C to +125°C operation ensure reliability in uncontrolled industrial enclosures. |
Use Scenario: Occupancy detection using infrared or capacitive proximity sensors in automotive seat or dashboard systems. IC Role / Device Role / Timing Role: Low-noise, low-offset amplifier feeding window comparators or SAR ADCs in ASIL-B subsystems. Use Value: 17-nV/√Hz voltage noise density and 7-MHz bandwidth support fast response to occupant movement without false triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA364AIDBVR | No shutdown pin; 5-pin SOT-23; identical AC specs but lacks enable functionality. | Used where continuous operation is required and board space is constrained (no enable trace needed). | Select when shutdown is unnecessary and minimal footprint is prioritized over power gating. |
| MCP6001T-E/OT | 1-MHz GBW, 0.6-V/µs slew rate, 2-µV/°C drift; lower speed and higher offset than OPA363AIDRG4. | Suitable for cost-sensitive, low-bandwidth sensor buffers where 7-MHz bandwidth is excessive. | Choose for sub-100-kHz applications where ultra-low cost outweighs performance trade-offs. |
Compared with OPA363AIDRG4, OPA364AIDBVR saves board area but forfeits power management, while MCP6001T-E/OT reduces BOM cost at the expense of bandwidth, speed, and DC precision-making OPA363AIDRG4 optimal for battery-powered, high-fidelity signal chains requiring dynamic control.
Availability
OPA363AIDRG4 is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, and automotive cabin monitoring systems requiring stable component supply and long-term manufacturability.
Supply support for OPA363AIDRG4 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 delivering analog and embedded processing solutions, with decades of expertise in precision op amps and low-power signal chain ICs.
The OPA363 family was designed specifically for ultra-low-voltage, rail-to-rail signal conditioning in battery-operated equipment-emphasizing shutdown efficiency, CMRR integrity, and ADC driver fidelity across –40°C to +125°C.
FAQ
What is the maximum supply voltage for OPA363AIDRG4?
The OPA363AIDRG4 supports a maximum supply voltage of 5.5 V across the V+ to V– terminals. Operation beyond this limit risks permanent damage, as specified in the Absolute Maximum Ratings table. It is fully functional down to 1.8 V, making it ideal for single-cell lithium or regulated 3.3-V systems. Always verify actual rail voltages under load and transient conditions before final design sign-off.
Does OPA363AIDRG4 require external compensation for unity-gain stability?
No, OPA363AIDRG4 is internally compensated and unity-gain stable. It does not require external capacitors or resistors for stability in G = 1 configurations. This simplifies layout and improves reliability in space-constrained applications such as hearing aids or smart sensors. Stability is maintained with capacitive loads up to 100 pF, as verified in the Typical Characteristics section.
How does the Enable pin on OPA363AIDRG4 function?
The Enable pin (pin 5) on OPA363AIDRG4 is active-low: pulling it below 0.75 × V+ disables the amplifier and reduces quiescent current to ≤0.9 µA. When pulled high (≥0.75 × V+), the device operates normally. This pin supports GPIO-driven power cycling and integrates seamlessly with microcontroller sleep/wake sequences in energy-conscious designs.
Can OPA363AIDRG4 drive ADC inputs directly?
Yes, OPA363AIDRG4 is optimized for ADC driving: its excellent CMRR (90 dB typ), low THD+N (0.002%), rail-to-rail output swing, and absence of phase reversal prevent differential linearity errors and code misalignment. It has been validated in TI reference designs for SAR and delta-sigma ADCs operating from 1.8 V to 5 V, with no external buffering required in most cases.
What is the input bias current specification for OPA363AIDRG4 at 125°C?
At +125°C, the input bias current for OPA363AIDRG4 remains in the ±10-pA range, consistent with its CMOS input architecture. The datasheet confirms IB stays below ±10 pA across the full –40°C to +125°C range, enabling high-impedance sensor interfaces (e.g., pH electrodes or piezoresistive elements) without significant DC error drift due to leakage.
OPA363AIDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 1.1mA
- Current - Output / Channel:
- 85 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA363AIDRG4 FAQ
1.How can I place an order for OPA363AIDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA363AIDRG4 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 OPA363AIDRG4 reliable?
The price and inventory of OPA363AIDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA363AIDRG4 is usually 5 days.
3.What payment methods are accepted for OPA363AIDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA363AIDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA363AIDRG4?
OPA363AIDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA363AIDRG4 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 OPA363AIDRG4?
For technical support, including OPA363AIDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA363AIDRG4 requirements.
6.How does Aetrix verify that OPA363AIDRG4 is sourced from the original manufacturer or authorized distributors?
All OPA363AIDRG4 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 OPA363AIDRG4 meets industry standards.
7.What is the process for return or replacement of OPA363AIDRG4?
All OPA363AIDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA363AIDRG4, 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 OPA363AIDRG4 part is unused and in its original packaging.
Return procedure for OPA363AIDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA363AIDRG4 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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