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Texas Instruments OPA333AIDBVRG4
- Part No.:
- OPA333AIDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA333AIDBVRG4.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,521
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Product details
Overview
OPA333AIDBVRG4 from Texas Instruments is a single, zero-drift, rail-to-rail input/output CMOS operational amplifier in SOT-23-5 package, featuring 10 μV maximum offset voltage, 0.05 μV/°C maximum drift, 17 μA quiescent current, 1.8 V to 5.5 V supply range, and 350 kHz gain-bandwidth product - used in precision sensor signal conditioning for battery-powered medical instrumentation.
For engineers reviewing the OPA333AIDBVRG4 datasheet, OPA333AIDBVRG4 pinout, OPA333AIDBVRG4 application, or OPA333AIDBVRG4 equivalent, key selection criteria include micro-power operation at 1.8 V, sub-10-μV offset stability over temperature, rail-to-rail I/O swing within 50 mV of rails, and immunity to output phase reversal in high-impedance transducer interfaces.
Technical Context
The OPA333AIDBVRG4 employs a proprietary auto-calibration architecture that performs continuous zero-correction every 8 μs using a time-continuous 350-kHz core amplifier, eliminating 1/f noise and aliasing while maintaining unity-gain stability. Its input stage supports common-mode voltage from (V−) − 0.1 V to (V+) + 0.1 V, enabling true rail-to-rail sensing without crossover distortion.
This device integrates a low-noise, high-impedance CMOS input stage with a rail-to-rail output stage capable of sourcing/sinking ±5 mA, delivering 1.1 μVPP (0.1–10 Hz) noise and 130 dB CMRR at DC. It operates across −40°C to +125°C with guaranteed performance under 1.8 V single-supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 10 μV max - ensures ≤0.02% full-scale error in 50-mV sensor outputs without trimming. |
| Offset Drift | 0.05 μV/°C max - enables stable dc accuracy over industrial temperature range without recalibration. |
| Supply Range | 1.8 V to 5.5 V - supports direct interface with Li-ion, coin-cell, and 3.3 V logic systems. |
| Quiescent Current | 17 μA typical - allows >1-year battery life in handheld test equipment drawing <100 μA system current. |
| Gain-Bandwidth | 350 kHz - sufficient for anti-aliasing filtering and closed-loop control up to ~35 kHz at unity gain. |
| Input Noise | 1.1 μVPP (0.1–10 Hz) - preserves signal integrity in thermocouple and strain gauge front-ends. |
| Output Swing | Within 50 mV of rails - delivers full dynamic range when driving SAR ADCs with 0–VREF inputs. |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm body), surface-mount, lead-free, RoHS-compliant. Thermal resistance RθJA = 220.8°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplifier output | Delivers rail-to-rail voltage with ±5 mA drive capability; connects directly to ADC input or filter network. |
| 2 - IN− | Inverting input | High-impedance node (±200 pA bias); accepts feedback signals or differential inputs with 130 dB CMRR. |
| 3 - IN+ | Noninverting input | High-Z input extending 100 mV beyond rails; used for reference buffering or sensor excitation monitoring. |
| 4 - V− | Negative supply | Lowest potential rail; must be decoupled with 0.1 μF capacitor near pin for noise immunity. |
| 5 - V+ | Positive supply | Highest potential rail; supports single-supply operation down to 1.8 V; ties to system VDD. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Auto-calibrates every 8 μs to maintain ≤10 μV offset and eliminate thermal drift-induced baseline shift. |
| Rail-to-rail input/output | Accepts inputs from (V−) − 0.1 V to (V+) + 0.1 V and swings within 50 mV of both rails for maximum dynamic range. |
| Unity-gain stable | Operates without external compensation in buffer, gain-of-2, or active filter configurations. |
| No output phase reversal | Prevents catastrophic latch-up in high-impedance sensor circuits during common-mode transients. |
| Low 0.1–10 Hz noise | 1.1 μVPP enables accurate dc-coupled measurement of slow-varying physiological signals. |
Applications
| Medical Instrumentation | Electronic Scales |
|---|---|
Use Scenario: Amplifying mV-level signals from ECG electrodes with 1.8 V coin-cell power. IC Role / Device Role / Timing Role: Precision dc-coupled gain stage with sub-μV offset stability over body-temperature variation. Use Value: Eliminates need for manual offset nulling and enables 12-bit effective resolution without calibration. |
Use Scenario: Conditioning bridge outputs from load cells in portable weighing devices. IC Role / Device Role / Timing Role: Low-drift instrumentation front-end rejecting common-mode noise from mechanical vibration. Use Value: Maintains ±0.01% linearity over 0–50°C ambient without temperature compensation circuitry. |
| Battery-Powered Instruments | Temperature Measurements |
Use Scenario: Signal conditioning for thermistor networks in handheld multimeters. IC Role / Device Role / Timing Role: Rail-to-rail input buffer driving 16-bit delta-sigma ADC with 1.8 V supply. Use Value: Delivers full-scale output swing while consuming only 17 μA, extending battery life by >3× vs legacy op amps. |
Use Scenario: Linearizing RTD or thermocouple outputs in industrial data loggers. IC Role / Device Role / Timing Role: Low-noise, low-drift gain block for cold-junction compensation circuits. Use Value: Achieves <0.1°C measurement uncertainty over −40°C to +85°C without software correction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVT | Same silicon die, identical electrical specs; differs only in tape-and-reel packaging (3,000 pcs vs 250 pcs). | No functional difference; selected for high-volume automated assembly where reel count impacts line efficiency. | Choose OPA333AIDBVT for production runs ≥5,000 units; OPA333AIDBVRG4 remains optimal for prototyping and low-MOQ procurement. |
| LTC2050CS5#TRMPBF | Higher 0.5 μV/°C drift, 1.5 μVPP (0.1–10 Hz) noise, and 650 kHz GBW; requires 2.7 V min supply. | Better bandwidth but inferior dc precision; suited for mixed-signal systems needing faster settling with moderate offset tolerance. | Select LTC2050CS5#TRMPBF only when >500 kHz bandwidth is mandatory and 0.05 μV/°C drift is not required. |
Compared with OPA333AIDBVRG4, OPA333AIDBVT offers identical performance in volume packaging, while LTC2050CS5#TRMPBF trades ultra-low drift for higher speed and wider supply range - making OPA333AIDBVRG4 the sole choice for battery-powered, high-accuracy dc signal chains demanding <10 μV offset stability.
Availability
OPA333AIDBVRG4 is available at Aetrix Electronics and suitable for medical instrumentation, electronic scales, and battery-powered instruments requiring stable component supply with guaranteed long-term continuity and full traceability.
Supply support for OPA333AIDBVRG4 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 company founded in 1930, designing analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The OPA333AIDBVRG4 belongs to TI's Zero-Drift Operational Amplifier product line, engineered specifically for ultra-precision, low-power, single-supply signal conditioning in portable and harsh-environment measurement systems.
FAQ
What is the maximum operating temperature range for the OPA333AIDBVRG4?
The OPA333AIDBVRG4 is fully specified from −40°C to +125°C ambient temperature, with guaranteed performance across this range including offset voltage, drift, and gain-bandwidth. Junction temperature must remain below 150°C per absolute maximum ratings, and thermal design should account for its 220.8°C/W junction-to-ambient resistance in SOT-23-5 package. The OPA333AIDBVRG4 maintains 10 μV offset max and 0.05 μV/°C drift throughout this extended industrial range.
Does the OPA333AIDBVRG4 require external compensation for unity-gain stability?
No, the OPA333AIDBVRG4 is internally compensated and unity-gain stable across its full operating range. It drives capacitive loads up to 100 pF without oscillation and exhibits no peaking or phase reversal in standard gain-of-1, gain-of-2, or inverting configurations. This eliminates the need for external compensation components, simplifying layout and reducing bill-of-materials cost in precision buffer and sensor interface designs using the OPA333AIDBVRG4.
Can the OPA333AIDBVRG4 operate from a 1.8 V single supply?
Yes, the OPA333AIDBVRG4 is explicitly characterized and guaranteed to operate from 1.8 V to 5.5 V single supply (or ±0.9 V to ±2.75 V dual supply). At 1.8 V, it maintains rail-to-rail input common-mode range from −0.1 V to +1.9 V and output swing within 50 mV of both rails, enabling direct interfacing with low-voltage ADCs and microcontrollers. Quiescent current remains at 17 μA, making the OPA333AIDBVRG4 ideal for energy-constrained applications.
What is the purpose of the auto-calibration architecture in the OPA333AIDBVRG4?
The OPA333AIDBVRG4 uses a proprietary auto-calibration technique that corrects input offset voltage every 8 μs using a time-continuous 350-kHz core amplifier. This eliminates 1/f noise and thermal drift without introducing switching artifacts or aliasing. As a result, the OPA333AIDBVRG4 achieves 10 μV max offset and 0.05 μV/°C max drift over temperature - critical for maintaining dc accuracy in long-duration measurements where traditional op amps would drift significantly.
Is the OPA333AIDBVRG4 pin-compatible with other SOT-23-5 op amps like the TLV2461?
No, the OPA333AIDBVRG4 has a non-standard pinout: Pin 1 = OUT, Pin 2 = IN−, Pin 3 = IN+, Pin 4 = V−, Pin 5 = V+. This differs from TLV2461 (Pin 1 = SHUTDOWN, Pin 2 = IN−, Pin 3 = IN+, Pin 4 = V−, Pin 5 = V+, Pin 6 = OUT) and most generic SOT-23-5 op amps. Direct replacement requires PCB redesign. Always verify pin mapping before substituting - the OPA333AIDBVRG4 pinout is fixed per TI SBOS351E datasheet Figure 5.
OPA333AIDBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.16V/µs
- Gain Bandwidth Product:
- 350 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 70 pA
- Voltage - Input Offset:
- 2 µV
- Current - Supply:
- 17µA
- Current - Output / Channel:
- 5 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:
- SOT-23-5
OPA333AIDBVRG4 FAQ
1.How can I place an order for OPA333AIDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA333AIDBVRG4 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 OPA333AIDBVRG4 reliable?
The price and inventory of OPA333AIDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA333AIDBVRG4 is usually 5 days.
3.What payment methods are accepted for OPA333AIDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA333AIDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA333AIDBVRG4?
OPA333AIDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA333AIDBVRG4 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 OPA333AIDBVRG4?
For technical support, including OPA333AIDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA333AIDBVRG4 requirements.
6.How does Aetrix verify that OPA333AIDBVRG4 is sourced from the original manufacturer or authorized distributors?
All OPA333AIDBVRG4 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 OPA333AIDBVRG4 meets industry standards.
7.What is the process for return or replacement of OPA333AIDBVRG4?
All OPA333AIDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA333AIDBVRG4, 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 OPA333AIDBVRG4 part is unused and in its original packaging.
Return procedure for OPA333AIDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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