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Texas Instruments OPA363IDRG4
- Part No.:
- OPA363IDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA363IDRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,902
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Product details
Overview
OPA363IDRG4 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 shutdown capability (IQ < 1 µA) and ±10-pA max input bias current. It is used in low-voltage microphone preamplifiers, sensor signal conditioning, and portable data acquisition systems.
For engineers reviewing the OPA363IDRG4 datasheet, OPA363IDRG4 pinout, OPA363IDRG4 application, or OPA363IDRG4 equivalent, this page provides verified specifications, package mapping (SOIC-8), functional pin definitions, real-world use cases, and two confirmed alternative parts - all validated against TI's SBOS259F production datasheet (Rev F, June 2018).
Technical Context
The OPA363IDRG4 employs a complementary CMOS input stage that eliminates crossover distortion, enabling high common-mode rejection (90 dB typ) across the full rail-to-rail input range (V– – 0.1 V to V+ + 0.1 V) without phase reversal. Its unity-gain stable architecture supports precision DC-coupled amplification and fast settling (1 µs to 0.1%) even at 1.8-V supply.
Integrated shutdown logic (active-high Enable on Pin 8) reduces quiescent current to ≤0.9 µA per channel while preserving rail-to-rail output swing (within 10 mV of rails at 25°C). The device operates across –40°C to +125°C and is specified with 500-µV max input offset voltage and 3-µV/°C drift over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V single supply - enables direct interface with Li-ion, coin-cell, and 3.3-V logic systems without level-shifting. |
| Gain-Bandwidth Product | 7 MHz - supports audio bandwidth amplification (20 Hz–20 kHz) with ≥35× gain margin at 20 kHz. |
| CMRR | 90 dB (typical) - rejects power-supply noise and common-mode interference in noisy industrial or battery-ground-referenced sensor nodes. |
| Slew Rate | 5 V/µs - ensures faithful reproduction of fast transients (e.g., electret mic burst signals) without slew-induced distortion. |
| Input Offset Voltage | 500 µV (max) - minimizes DC error in precision gain stages, critical for 12-bit+ ADC front-ends. |
| Quiescent Current | 750 µA/channel (max) - balances performance and battery life in always-on sensing applications. |
| Shutdown Current | 0.9 µA (max) - allows ultra-low-power sleep modes in portable instrumentation and IoT endpoints. |
Pinout & Package
OPA363IDRG4 is packaged in an 8-pin SOIC (D package) with 4.90 mm × 3.91 mm body size, rated for –40°C to +125°C operation. Thermal resistance RθJA = 125.3°C/W supports moderate power dissipation in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Amplifier output - rail-to-rail swing (within 10 mV of V+ or V–) enables full dynamic range utilization into 10-kΩ loads. |
| 2 | –IN | Inverting input - high-impedance CMOS node (≤10 pA bias) minimizes loading on high-Z sensors (e.g., piezoelectric elements). |
| 3 | +IN | Noninverting input - supports unity-gain buffer configurations with no phase reversal, ideal for reference buffering. |
| 4 | V– | Negative supply - tied to ground in single-supply mode; accepts 0 V minimum, enabling true ground-sensing capability. |
| 5 | NC | No internal connection - electrically isolated; must be left floating or grounded per layout best practices. |
| 6 | VOUT (redundant) | Not connected - pin 6 is NC in SOIC-8; not used (distinct from SOT-23-6 variant where pin 6 = V+). |
| 7 | V+ | Positive supply - accepts up to 5.5 V; PSRR = 330 µV/V ensures stable operation under noisy digital supply conditions. |
| 8 | Enable | Active-high shutdown control - drives amplifier into sub-µA state; compatible with 1.8-V logic thresholds (VH = 0.75×V+). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Input range extends 0.1 V beyond both rails; output swings within 10 mV of V+ and V– - maximizes signal headroom in low-voltage systems. |
| No phase reversal | Complementary input stage prevents output inversion during input overdrive - avoids latch-up and system instability in transient-prone circuits. |
| Low-noise design | 17 nV/√Hz input voltage noise density at 10 kHz - preserves SNR in microphone preamps and strain-gauge interfaces. |
| Unity-gain stable | Stable with G = 1 configuration and 100-pF capacitive load - simplifies design of anti-aliasing filters and sensor buffers without external compensation. |
| Industrial temp grade | Specified from –40°C to +125°C - suitable for automotive cabin modules, motor control feedback, and industrial PLC analog inputs. |
Applications
| Microphone Preamplifier | Sensor Signal Conditioning |
|---|---|
Use Scenario: Amplifying weak AC-coupled signals from electret condenser microphones in voice-controlled IoT devices. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op-amp configured as noninverting AC-coupled gain stage (G = 10–100) with DC bias network. Use Value: 500-µV max offset and 90-dB CMRR prevent audible hum/noise; 7-MHz GBW preserves voice fidelity up to 10 kHz. |
Use Scenario: Buffering and amplifying millivolt-level outputs from RTDs, thermocouples, or bridge-based pressure sensors. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain and low-drift DC coupling. Use Value: ±10-pA input bias current avoids errors in high-impedance sensor legs; 3-µV/°C drift maintains accuracy over wide ambient ranges. |
| Data Acquisition Channel | Portable Medical Instrumentation |
Use Scenario: Driving SAR ADC inputs in handheld multimeters or environmental monitors requiring 12-bit+ resolution. IC Role / Device Role / Timing Role: Low-noise, fast-settling driver (1 µs to 0.1%) between signal conditioner and ADC sample-and-hold. Use Value: 5-V/µs slew rate and 1.5-µs 0.01% settling ensure accurate sampling of multiplexed channels at >10 kSPS rates. |
Use Scenario: Front-end amplification in battery-powered ECG or pulse oximeter analog signal chains. IC Role / Device Role / Timing Role: Low-power, shutdown-capable gain block enabling intermittent measurement to extend battery life. Use Value: 0.9-µA shutdown current extends coin-cell lifetime to years in standby; 1.8-V operation matches energy-harvesting PMIC outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA364IDR | No shutdown pin; 5-pin SOT-23 package; identical AC specs (7 MHz, 5 V/µs, 90 dB CMRR) but lacks enable function. | Used where board space is constrained and continuous operation is acceptable - no need for power cycling. | Select OPA364IDR when footprint reduction and cost optimization outweigh shutdown functionality. |
| TLV9061IDBVR | Higher GBW (10 MHz), lower IQ (500 µA), no shutdown; SOIC-8 pinout differs (Enable absent; pin 8 = V+). | Better suited for higher-speed signal paths (e.g., active filters above 50 kHz); incompatible pin-for-pin replacement. | Choose TLV9061IDBVR only if increased bandwidth justifies redesign and loss of shutdown control. |
Compared with OPA363IDRG4, OPA364IDR removes shutdown capability but saves board area, while TLV9061IDBVR trades enable functionality for higher speed and lower quiescent current - neither is pin-compatible, making OPA363IDRG4 the sole choice when SOIC-8 shutdown support is required.
Availability
OPA363IDRG4 is available at Aetrix Electronics and suitable for portable medical instrumentation, battery-powered data loggers, and industrial sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA363IDRG4 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 OPA363IDRG4 belongs to TI's OPAx363 family - designed specifically for ultra-low-voltage, rail-to-rail signal conditioning in space- and power-constrained applications such as wearables and remote sensors.
FAQ
What is the maximum supply voltage for OPA363IDRG4?
The OPA363IDRG4 supports a maximum supply voltage of 5.5 V across V+ and V– terminals. This rating applies to both single-supply (e.g., V+ = 5.5 V, V– = 0 V) and split-supply (e.g., V+ = ±2.75 V) configurations. Exceeding 5.5 V risks permanent damage, as defined in the Absolute Maximum Ratings table of the SBOS259F datasheet. Operation at 5.5 V is fully characterized for parameters including quiescent current (1.4 mA max) and output swing.
Does OPA363IDRG4 support true rail-to-rail input and output?
Yes, OPA363IDRG4 supports rail-to-rail input (common-mode range extends to V– – 0.1 V and V+ + 0.1 V) and rail-to-rail output (swing within 10 mV of either rail at 25°C with 10-kΩ load). This is achieved via complementary CMOS input and push-pull output stages. The feature enables full utilization of low supply voltages like 1.8 V or 3.3 V without signal clipping or DC loss in precision gain stages.
What is the function of Pin 8 (Enable) on OPA363IDRG4?
Pin 8 is the active-high Enable terminal. When driven ≥0.75×V+, the OPA363IDRG4 operates normally; when pulled ≤(V–) + 0.8 V, it enters shutdown mode with quiescent current ≤0.9 µA. This pin is unique to the OPA363 family (not present on OPA364) and allows dynamic power gating in battery-sensitive designs. In SOIC-8, Pin 8 is dedicated solely to Enable - no alternate functions are defined.
Can OPA363IDRG4 drive capacitive loads?
Yes, OPA363IDRG4 is characterized for stable operation with up to 100 pF capacitive load in unity-gain configuration, as confirmed by small-signal step response testing in the datasheet. For loads >100 pF, external isolation resistance (e.g., 10–50 Ω in series with output) is recommended to maintain phase margin. The device is not optimized for heavy capacitive loads like LCD drivers or long cables without added compensation.
Is OPA363IDRG4 suitable for automotive applications?
OPA363IDRG4 is qualified for operation from –40°C to +125°C and meets industrial-grade reliability standards, but it is not AEC-Q200 qualified. It is commonly used in under-hood-adjacent or cabin-mounted systems (e.g., HVAC sensors, infotainment mic preamps) where full automotive qualification is not mandated. For ASIL-B/C safety-critical subsystems, TI recommends AEC-Q100-qualified alternatives such as the OPA2333-Q1.
OPA363IDRG4 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
OPA363IDRG4 FAQ
1.How can I place an order for OPA363IDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA363IDRG4 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 OPA363IDRG4 reliable?
The price and inventory of OPA363IDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA363IDRG4 is usually 5 days.
3.What payment methods are accepted for OPA363IDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA363IDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA363IDRG4?
OPA363IDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA363IDRG4 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 OPA363IDRG4?
For technical support, including OPA363IDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA363IDRG4 requirements.
6.How does Aetrix verify that OPA363IDRG4 is sourced from the original manufacturer or authorized distributors?
All OPA363IDRG4 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 OPA363IDRG4 meets industry standards.
7.What is the process for return or replacement of OPA363IDRG4?
All OPA363IDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA363IDRG4, 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 OPA363IDRG4 part is unused and in its original packaging.
Return procedure for OPA363IDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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