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Texas Instruments OPA363IDR
- Part No.:
- OPA363IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA363IDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,925
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Product details
Overview
OPA363IDR 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, 90-dB typical CMRR, and 500-µV maximum input offset voltage - enabling high-fidelity signal conditioning in battery-powered microphone preamplifiers and sensor interfaces.
For engineers reviewing the OPA363IDR datasheet, OPA363IDR pinout, OPA363IDR application, or OPA363IDR equivalent, this device supports precision low-voltage analog front-ends where rail-to-rail swing, low quiescent current (750 µA max), and shutdown capability (<1 µA) are critical for power-constrained industrial and portable systems.
Technical Context
The OPA363IDR uses a complementary CMOS input stage that eliminates crossover distortion, ensuring monotonic common-mode response and preserving differential linearity when driving SAR or delta-sigma ADCs. Its unity-gain stability and 10-mV rail-to-rail output swing support direct interfacing with 12- to 16-bit converters without external level-shifting.
Integrated shutdown control (active-high on Pin 5) reduces supply current to <0.9 µA per channel while maintaining fast turn-on (20 µs) and turn-off (1 µs) timing. Input bias current remains ultra-low (±1 pA typ at 25°C), making it suitable for high-impedance electret microphone biasing and photodiode transimpedance configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct operation from Li-ion, coin-cell, or regulated 3.3-V rails without LDO overhead. |
| Gain-Bandwidth Product | 7 MHz - supports stable closed-loop gain ≥10 up to ~700 kHz, sufficient for audio-band filtering and anti-aliasing. |
| Input Offset Voltage | 500 µV max - ensures ≤0.01% gain error in 5-V full-scale sensor amplification without trimming. |
| Slew Rate | 5 V/µs - allows clean 1-Vpp, 500-kHz sine wave reproduction with <1% distortion. |
| CMRR | 90 dB typical - rejects >99.98% of common-mode noise in noisy industrial environments (e.g., motor drives). |
| Quiescent Current | 750 µA max per channel - extends battery life in always-on acoustic monitoring nodes (>1 year on CR2032). |
| Shutdown Current | 0.9 µA max - enables micro-power sleep modes in wake-on-sound architectures. |
Pinout & Package
OPA363IDR is packaged in an 8-pin SOIC (D package) with 4.90 mm × 3.91 mm body size. Pin 1 is NC (no internal connection); Pin 5 is Enable (active-high logic control for shutdown mode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V– (Pin 4) | Negative supply terminal | Connects to ground or lowest system potential; supports true single-supply operation down to 1.8 V. |
| V+ (Pin 7) | Positive supply terminal | Accepts 1.8–5.5 V; powers internal charge pump enabling rail-to-rail input stage operation. |
| +IN (Pin 3) | Noninverting input | High-impedance node (input bias current ±1 pA); compatible with high-R electret microphone bias networks. |
| –IN (Pin 2) | Inverting input | Used for feedback configuration; supports stable unity-gain buffer or inverting gain stages. |
| VOUT (Pin 6) | Amplifier output | Swings within 10 mV of both rails; drives 10-kΩ loads directly into ADC reference buffers or analog switches. |
| Enable (Pin 5) | Shutdown control input | Logic-high (>0.75×V+) activates amplifier; logic-low places output in high-Z state and cuts supply current to <1 µA. |
| NC (Pins 1, 5, 8) | No internal connection | Pins 1 and 8 are unconnected; Pin 5 is Enable (not NC) - confirmed per TI SBOS259F Rev F pin function table. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Input common-mode range extends 0.1 V beyond both supply rails; output swings to within 10 mV of V– and V+, enabling full dynamic range utilization in 1.8-V systems. |
| Shutdown mode | Reduces quiescent current to 0.9 µA while preserving fast recovery (20 µs turn-on), ideal for intermittent sensing duty cycles. |
| Low input bias current | ±1 pA typical at 25°C - minimizes voltage drop across high-value bias resistors (e.g., 100 kΩ for electret mics), preventing DC shift errors. |
| No phase reversal | Guaranteed monotonic input stage behavior prevents output latch-up during overdrive, simplifying fault-tolerant design in safety-critical signal chains. |
| Unity-gain stable | Operates stably with gain = 1 without external compensation - reduces BOM count in buffer and follower applications. |
Applications
| Microphone Preamplifier | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Amplifies weak AC signals from electret condenser microphones in voice-activated IoT edge nodes. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op-amp configured as noninverting amplifier with 100-kΩ RBIAS and 5.9-kΩ RFB for 6× gain. Use Value: 500-µV max offset and 17-nV/√Hz input noise preserve SNR >65 dB(A) across 100 Hz–10 kHz bandwidth. |
Use Scenario: Conditions output of RTD, thermistor, or bridge-based pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain and 1.8-V operation for low-power field transmitters. Use Value: 90-dB CMRR rejects 50/60-Hz mains coupling; 750-µA IQ enables continuous 24/7 monitoring on 24-V loop-powered rails. |
| Data Acquisition Channel Buffer | Portable Medical Front-End |
Use Scenario: Drives multiplexed ADC inputs in handheld multimeters and portable oscilloscopes. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-impedance source from ADC sample capacitor; enabled only during conversion window. Use Value: 1-µs 0.1% settling time ensures accurate sampling at ≥1 MSPS; shutdown cuts idle power by >99.9% between conversions. |
Use Scenario: Amplifies ECG electrode signals in wearable heart-rate monitors with strict battery-life requirements. IC Role / Device Role / Timing Role: Low-noise, low-offset amplifier in first-stage gain block with active shield drive and right-leg drive support. Use Value: 10-µVpp 0.1–10 Hz input-referred noise meets AAMI EC11 standards; 125°C rating supports sterilization validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA364IDBVR | No shutdown pin; 5-pin SOT-23 package; identical AC specs but lacks enable functionality. | Suitable for space-constrained designs where shutdown is unnecessary and PCB area is premium. | Select OPA364IDBVR only if shutdown is not required and SOT-23 footprint is preferred over SOIC. |
| MCP6001T-I/OT | Lower bandwidth (1 MHz); higher offset (1.5 mV max); no shutdown; 600-µA IQ; Microchip's rail-to-rail op-amp. | Better suited for cost-sensitive, low-speed sensor buffering where 7-MHz GBW is excessive. | Choose MCP6001T-I/OT for sub-$0.20 BOM targets in non-critical accuracy applications like ambient light sensing. |
Compared with OPA363IDR, OPA364IDBVR removes shutdown capability but saves board space, while MCP6001T-I/OT trades bandwidth and precision for lower cost and power - making OPA363IDR the optimal choice when micropower shutdown and 7-MHz fidelity are jointly required.
Availability
OPA363IDR is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical devices, and battery-powered audio acquisition systems requiring stable component supply across extended temperature ranges (–40°C to +125°C).
Supply support for OPA363IDR 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 low-power signal chain solutions.
The OPA363IDR belongs to TI's OPAx363 family - engineered specifically for ultra-low-voltage, rail-to-rail performance in energy-harvesting and battery-operated systems where traditional op-amps fail to start or settle reliably.
FAQ
What is the operating temperature range for OPA363IDR?
The OPA363IDR is specified for continuous operation from –40°C to +125°C, meeting industrial and automotive under-hood requirements. This range is validated across all electrical parameters in the TI SBOS259F datasheet, including offset drift (3 µV/°C max) and CMRR (74 dB min at extremes).
Does OPA363IDR require external compensation for unity-gain stability?
No, OPA363IDR is internally compensated and unity-gain stable. It drives capacitive loads up to 100 pF without oscillation, as verified in Figure 19 (small-signal step response) and Figure 13 (overshoot vs load capacitance) of the official datasheet.
What is the logic threshold for the Enable pin on OPA363IDR?
The Enable pin (Pin 5) asserts active-high: logic low (≤0.8 V) disables the amplifier, reducing current to <0.9 µA; logic high (≥0.75×V+) enables normal operation. For a 3.3-V supply, VH ≥ 2.475 V and VL ≤ 0.8 V - confirmed in Section 7.9 Electrical Characteristics.
Can OPA363IDR drive ADC inputs directly?
Yes - OPA363IDR's rail-to-rail output swing (within 10 mV of rails), low output impedance, and 1-µs 0.1% settling time allow direct connection to SAR and sigma-delta ADCs such as TI's ADS1262 or ADI's AD7177-2 without external buffers or level-shifting circuitry.
How does OPA363IDR differ from OPA364IDR in pinout and functionality?
OPA363IDR (SOIC-8) includes a dedicated Enable pin (Pin 5) and two NC pins (Pins 1 and 8); OPA364IDR (SOIC-8) has no Enable pin and three NC pins (Pins 1, 5, 8). Functionally, OPA363IDR supports shutdown; OPA364IDR does not - a hardware-level distinction affecting power architecture decisions.
OPA363IDR 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:
- 500 µV
- 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
OPA363IDR FAQ
1.How can I place an order for OPA363IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA363IDR 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 OPA363IDR reliable?
The price and inventory of OPA363IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA363IDR is usually 5 days.
3.What payment methods are accepted for OPA363IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA363IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA363IDR?
OPA363IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA363IDR 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 OPA363IDR?
For technical support, including OPA363IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA363IDR requirements.
6.How does Aetrix verify that OPA363IDR is sourced from the original manufacturer or authorized distributors?
All OPA363IDR 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 OPA363IDR meets industry standards.
7.What is the process for return or replacement of OPA363IDR?
All OPA363IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA363IDR, 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 OPA363IDR part is unused and in its original packaging.
Return procedure for OPA363IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA363IDR Tags
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