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Texas Instruments OPA330AIDBVR
- Part No.:
- OPA330AIDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA330AIDBVR.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:14,602
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Product details
Overview
OPA330AIDBVR from Texas Instruments is a single-channel, rail-to-rail input/output CMOS operational amplifier in the Zero-Drift series, delivering 50 µV max offset voltage, 0.25 µV/°C max drift, and 35 µA max quiescent current at 1.8 V to 5.5 V supply. It operates from –40°C to +125°C and is used in precision low-power signal conditioning for battery-powered instrumentation and current-sense circuits.
For engineers reviewing the OPA330AIDBVR datasheet, OPA330AIDBVR pinout, OPA330AIDBVR application, or OPA330AIDBVR equivalent, key selection criteria include ultra-low drift performance under wide temperature range, micro-power operation with rail-to-rail I/O, and compatibility with unregulated battery supplies down to 1.8 V.
Technical Context
The OPA330AIDBVR employs a proprietary auto-calibration architecture that continuously corrects input offset and drift without chopper-induced ripple or switching artifacts. Its zero-drift topology eliminates 1/f noise dominance, yielding flat voltage noise density (55 nV/√Hz at 1 kHz) and only 1.1 µVPP integrated noise from 0.1 Hz to 10 Hz.
It features internal EMI filtering, unity-gain stability, and rail-to-rail input common-mode range extending 100 mV beyond both supply rails - enabling direct interfacing with sensors operating near ground or VCC in single-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 50 µV maximum - ensures <±100 µV total error over full temperature range without calibration |
| Drift vs Temp | 0.25 µV/°C maximum - guarantees <±31 µV offset shift across –40°C to +125°C |
| Quiescent Current | 35 µA maximum per amplifier - enables multi-year operation on coin-cell batteries |
| Supply Range | 1.8 V to 5.5 V - supports direct connection to Li-ion, Li-Po, or two-AA battery stacks |
| Input Noise (0.1–10 Hz) | 1.1 µVPP - suitable for DC-coupled thermocouple and strain gauge amplification |
| CMRR | 115 dB typical - rejects common-mode interference in noisy industrial sensor nodes |
| GBW | 350 kHz - sufficient for precision DC–100 Hz signal paths including medical ECG front ends |
Pinout & Package
The OPA330AIDBVR is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm with exposed thermal pad connected to V–.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V– | Negative power supply | Reference for lowest supply rail; thermal pad must be soldered to PCB ground plane for thermal reliability |
| +IN | Noninverting input | High-impedance node (typ. 200 pA bias) accepting signals up to 100 mV beyond V– or V+ |
| –IN | Inverting input | Differential partner to +IN; matched layout critical to preserve low offset performance |
| OUT | Amplifier output | Rail-to-rail swing within 100 mV of V– or V+ at 10 kΩ load; stable into 100 pF capacitive loads |
| V+ | Positive power supply | Accepts up to 5.5 V; PSRR >100 dB minimizes supply ripple coupling into output |
Key Features
| Feature | Design Value |
|---|---|
| Zero-Drift Auto-Calibration | Continuous correction eliminates aging and thermal gradient-induced offset errors without external components |
| Rail-to-Rail Input/Output | Full dynamic range utilization in single-supply systems - no level-shifting circuitry required |
| Internal EMI Filtering | Integrated 10 kΩ resistors suppress RF interference from GSM, Wi-Fi, or switching regulators |
| Low 1/f Noise Profile | Near-flat noise spectral density enables high-resolution DC measurements without notch filtering |
| Wide Temperature Range | Specified from –40°C to +125°C - qualified for automotive cabin and industrial motor control environments |
Applications
| Battery-Powered Instrumentation | Temperature Measurement |
|---|---|
Use Scenario: Portable multimeter front end acquiring µV-level sensor outputs with 16-bit ADC resolution. IC Role / Device Role / Timing Role: Precision DC amplifier conditioning thermistor or RTD bridge signals before digitization. Use Value: 50 µV max VOS and 0.25 µV/°C drift ensure <0.1°C measurement error over full operating temperature without recalibration. | Use Scenario: Industrial oven controller monitoring Pt100 sensor in harsh EMI environment. IC Role / Device Role / Timing Role: Low-noise, high-CMRR buffer isolating sensor from long cable runs and switching power supplies. Use Value: 115 dB CMRR and internal EMI filtering reject 50/60 Hz line noise and variable-frequency drive harmonics. |
| Electronic Scales | Medical Instrumentation |
Use Scenario: Load-cell interface in handheld weighing scale powered by two alkaline AA cells. IC Role / Device Role / Timing Role: Ultra-low-power signal conditioner providing gain and offset trimming for strain-gauge Wheatstone bridge. Use Value: 35 µA max IQ extends battery life beyond 2 years; rail-to-rail I/O accommodates unregulated 2.4–3.2 V supply variation. | Use Scenario: Patient-worn ECG monitor acquiring microvolt cardiac signals in ambulatory settings. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with high input impedance and low 1/f noise. Use Value: 1.1 µVPP 0.1–10 Hz noise and 50 µV VOS enable detection of sub-10 µV P-waves without digital post-filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | Lower max offset (10 µV) and drift (0.1 µV/°C), but higher IQ (17 µA typ) and same 5-pin SOT-23 package | Better for <0.05°C temperature accuracy; less suitable for multi-year coin-cell use | Select OPA333AIDBVR when absolute offset budget dominates power budget |
| MCP6V81T-E/OT | Similar 50 µV VOS and 0.25 µV/°C drift, but wider supply (1.8–5.5 V), lower noise (0.95 µVPP), and same SOT-23-5 | Higher ESD rating (4 kV HBM vs TI's 4 kV), identical thermal footprint - drop-in for legacy designs | Select MCP6V81T-E/OT when dual-sourcing or enhanced robustness against handling ESD is required |
Compared with OPA330AIDBVR, OPA333AIDBVR offers tighter DC specs at modest IQ increase, while MCP6V81T-E/OT matches core performance with improved noise and ESD tolerance - both retain pin compatibility and thermal design continuity.
Availability
OPA330AIDBVR is available at Aetrix Electronics and suitable for battery-powered instrumentation, temperature measurement systems, and electronic scales requiring stable component supply with guaranteed long-term availability.
Supply support for OPA330AIDBVR 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 designing analog ICs, embedded processors, and system-on-chip solutions for industrial, automotive, and consumer markets.
The OPA330AIDBVR belongs to TI's Zero-Drift operational amplifier product line, engineered specifically for high-accuracy, low-power DC signal conditioning in cost-sensitive portable and industrial equipment.
FAQ
What is the maximum supply voltage for OPA330AIDBVR?
The OPA330AIDBVR has an absolute maximum supply voltage of 7 V, but its recommended operating range is 1.8 V to 5.5 V. Exceeding 5.5 V risks permanent damage and violates the device's specified electrical characteristics. For reliable operation in battery-powered systems, design margins should keep VS ≤ 5.5 V, especially during charging transients.
Does OPA330AIDBVR support rail-to-rail input with true over-the-rail capability?
Yes, the OPA330AIDBVR supports rail-to-rail input with a common-mode voltage range extending 100 mV beyond both V– and V+, as confirmed in Section 7.7 of the SBOS432G datasheet. This allows direct interfacing with sensors whose output exceeds the supply rails by up to 0.1 V - provided input current is limited to ≤10 mA using series resistors.
Can OPA330AIDBVR drive capacitive loads without oscillation?
The OPA330AIDBVR is unity-gain stable and characterized to drive ≥100 pF capacitive loads without peaking or oscillation, as verified in Figure 14 of the SBOS432G datasheet. For loads >100 pF, a small series resistor (10–50 Ω) between amplifier output and capacitance is recommended to maintain phase margin.
What is the thermal pad connection requirement for OPA330AIDBVR in SOT-23-5 (DBV) package?
The OPA330AIDBVR in DBV package includes an exposed thermal die pad on the underside, which must be soldered to a PCB copper pour connected to V– (negative supply). This connection is mandatory for thermal reliability and ensures junction temperature remains within safe limits at 35 µA IQ under continuous operation.
How does the auto-calibration architecture of OPA330AIDBVR affect system-level noise performance?
The OPA330AIDBVR's auto-calibration eliminates 1/f (flicker) noise, resulting in flat voltage noise density (55 nV/√Hz at 1 kHz) and only 1.1 µVPP integrated noise from 0.1 Hz to 10 Hz. Unlike chopper-stabilized amplifiers, it introduces no switching artifacts or intermodulation distortion - preserving signal integrity in precision DC-coupled measurement paths.
OPA330AIDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 200 pA
- Voltage - Input Offset:
- 8 µV
- Current - Supply:
- 21µA
- 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
OPA330AIDBVR FAQ
1.How can I place an order for OPA330AIDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA330AIDBVR 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 OPA330AIDBVR reliable?
The price and inventory of OPA330AIDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA330AIDBVR is usually 5 days.
3.What payment methods are accepted for OPA330AIDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA330AIDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA330AIDBVR?
OPA330AIDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA330AIDBVR 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 OPA330AIDBVR?
For technical support, including OPA330AIDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA330AIDBVR requirements.
6.How does Aetrix verify that OPA330AIDBVR is sourced from the original manufacturer or authorized distributors?
All OPA330AIDBVR 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 OPA330AIDBVR meets industry standards.
7.What is the process for return or replacement of OPA330AIDBVR?
All OPA330AIDBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA330AIDBVR, 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 OPA330AIDBVR part is unused and in its original packaging.
Return procedure for OPA330AIDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA330AIDBVR Tags
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