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Texas Instruments OPA330AIDBVRG4
- Part No.:
- OPA330AIDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA330AIDBVRG4.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,320
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Product details
Overview
OPA330AIDBVRG4 from Texas Instruments is a single-channel, zero-drift CMOS operational amplifier optimized for precision, low-power, rail-to-rail input/output operation in battery-powered and sensor signal-conditioning systems. It delivers 50 µV maximum offset voltage, 0.25 µV/°C maximum drift, 35 µA maximum quiescent current, 1.8 V to 5.5 V supply range, and 1.1 µVPP (0.1–10 Hz) noise - enabling high-accuracy measurements in electronic scales and handheld medical instrumentation.
For engineers reviewing the OPA330AIDBVRG4 datasheet, OPA330AIDBVRG4 pinout, OPA330AIDBVRG4 application, or OPA330AIDBVRG4 equivalent, key selection criteria include ultra-low drift over temperature, sub-1-µVPP low-frequency noise, rail-to-rail I/O swing within 100 mV of rails, and compatibility with unregulated 2-cell Li-ion or 3.3 V systems requiring long-term DC stability without recalibration.
Technical Context
The OPA330AIDBVRG4 employs a proprietary auto-calibration chopper architecture that continuously corrects input offset and 1/f noise while maintaining unity-gain stability and eliminating phase reversal. Its internal EMI filtering and ±200 pA typical input bias current support robust performance in noisy industrial and portable environments.
This device operates across –40°C to +125°C with guaranteed specifications including 115 dB CMRR, 115 dB open-loop gain, 350 kHz gain-bandwidth product, and 0.16 V/µs slew rate - all sustained at 1.8 V supply, making it suitable for direct battery interfacing without LDO regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 50 µV max - ensures ≤0.5 mV error in 10 V full-scale measurement without trimming |
| Drift vs Temperature | 0.25 µV/°C max - contributes <3 µV total drift over 0–70°C ambient range |
| Quiescent Current | 35 µA max - enables >1-year battery life in 10 µA sleep-mode sensor nodes |
| Supply Range | 1.8 V to 5.5 V - supports direct connection to 2×AA, Li-ion, or 3.3 V logic rails |
| Input Voltage Range | (V–) – 0.1 V to (V+) + 0.1 V - enables true rail-to-rail sensing including ground-referenced signals |
| Noise (0.1–10 Hz) | 1.1 µVPP - critical for stable DC-coupled thermocouple or strain gauge amplification |
| Output Swing | Within 100 mV of rails - delivers ≥3.1 V output on 3.3 V supply for ADC driver applications |
Pinout & Package
OPA330AIDBVRG4 is packaged in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm with exposed thermal pad connected to V–. The compact footprint supports high-density PCB layouts in space-constrained portable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output | Amplified differential signal; rail-to-rail capable, drives 10 kΩ load to within 100 mV of supply rails |
| 2 - V– | Negative Supply | Lowest potential rail; connects to GND in single-supply configs; thermal pad must be tied to V– |
| 3 - +IN | Noninverting Input | High-impedance (≥1013 Ω), accepts signals up to 0.1 V beyond V– or V+; EMI-filtered |
| 4 - –IN | Inverting Input | High-impedance, matched to +IN; used for feedback or differential sensing; same EMI protection |
| 5 - V+ | Positive Supply | Highest potential rail; supports 1.8–5.5 V; decoupling capacitor required within 1 cm |
Key Features
| Feature | Design Value |
|---|---|
| Zero-Drift Auto-Calibration | Continuous correction eliminates thermal drift and aging effects - no external nulling required |
| Rail-to-Rail I/O | Full input common-mode range (V– –0.1 V to V+ +0.1 V) and output swing to within 100 mV of rails |
| Internal EMI Filtering | Integrated 10 kΩ resistors suppress RF interference up to 1 GHz without external components |
| Low-Frequency Noise | 1.1 µVPP (0.1–10 Hz) enables stable DC gain in precision weigh scales and thermopile sensors |
| Wide Temp Range | Specified from –40°C to +125°C - suitable for automotive cabin modules and industrial field transmitters |
Applications
| Battery-Powered Instrumentation | Temperature Measurement |
|---|---|
Use Scenario: Portable multimeter front-end amplifying mV-level thermocouple or RTD bridge outputs. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with ultra-low drift to preserve calibration over field use and temperature cycling. Use Value: Eliminates need for periodic zero-offset recalibration; maintains ≤0.1°C accuracy over 0–50°C ambient without hardware adjustment. |
Use Scenario: Cold-junction compensation circuit in industrial thermocouple interfaces. IC Role / Device Role / Timing Role: Low-drift buffer and amplifier for thermistor or diode-based reference junction sensing. Use Value: 0.25 µV/°C drift translates to <0.025°C error per 100°C ambient shift - critical for Class A thermocouple compliance. |
| Electronic Scales | Medical Instrumentation |
Use Scenario: Strain gauge signal conditioning in handheld digital scales and load cells. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with rail-to-rail input to capture full bridge output swing near ground. Use Value: 1.1 µVPP low-frequency noise ensures stable 24-bit ADC resolution without averaging overhead. |
Use Scenario: ECG electrode amplifier front-end in portable patient monitors. IC Role / Device Role / Timing Role: Ultra-low-noise, low-drift gain block for microvolt-level biopotential signals. Use Value: Sub-50 µV offset and absence of phase reversal prevent baseline wander and false arrhythmia detection. |
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 10 µV max offset, identical 0.25 µV/°C drift, but 17 µA higher IQ (52 µA max) | Better DC accuracy at cost of battery life; same SOT-23-5 package and pinout | Select when offset-critical calibration dominates power budget |
| MCP6V81T-E/OT | 25 µV max offset, 0.5 µV/°C drift, 65 µA IQ, 1.8–5.5 V supply, same SOT-23-5 | Higher drift limits use in wide-temperature medical or automotive apps; lower cost | Choose for cost-sensitive consumer devices where <±1 µV/°C drift is acceptable |
Compared with OPA330AIDBVRG4, OPA333AIDBVR trades 17 µA higher quiescent current for tighter offset control, while MCP6V81T-E/OT offers lower unit cost but doubles drift sensitivity - making OPA330AIDBVRG4 the optimal balance of ultra-low drift, sub-35 µA power, and industrial-grade temperature performance.
Availability
OPA330AIDBVRG4 is available at Aetrix Electronics and suitable for battery-powered instrumentation, temperature measurement systems, electronic scales, and medical instrumentation requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for OPA330AIDBVRG4 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 over 90 years of innovation in precision analog design and manufacturing excellence.
The OPA330 family belongs to TI's Zero-Drift Operational Amplifier product line, engineered specifically for high-accuracy, low-power signal conditioning in unregulated battery systems and sensor front-ends where long-term DC stability is non-negotiable.
FAQ
What is the maximum operating temperature range for the OPA330AIDBVRG4?
The OPA330AIDBVRG4 is fully specified from –40°C to +125°C ambient temperature. All key parameters-including offset voltage, drift, CMRR, and open-loop gain-are guaranteed across this range per the SBOS432G datasheet. This makes OPA330AIDBVRG4 suitable for under-hood automotive modules, industrial process controllers, and outdoor environmental sensors where thermal extremes are routine.
Does the OPA330AIDBVRG4 require external capacitors for stability?
No, the OPA330AIDBVRG4 is unity-gain stable and does not require external compensation capacitors. It maintains phase margin >60° at all gains ≥1 with capacitive loads up to 100 pF. However, a 100 nF ceramic decoupling capacitor is mandatory between V+ and V– pins, placed within 1 cm of the device, to ensure robust PSRR and transient response-especially critical in battery-powered systems with varying source impedance.
Can the OPA330AIDBVRG4 operate from a single 1.8 V supply?
Yes, the OPA330AIDBVRG4 is explicitly characterized and guaranteed for operation down to 1.8 V (±0.9 V). At this minimum supply, it retains rail-to-rail input capability (V– –0.1 V to V+ +0.1 V), 100 mV output swing margin, 35 µA max IQ, and 115 dB CMRR - enabling direct interface with energy-harvesting sources and coin-cell-powered IoT endpoints without voltage boosting.
How does the auto-calibration architecture affect OPA330AIDBVRG4's noise profile?
The OPA330AIDBVRG4's proprietary auto-calibration eliminates 1/f (flicker) noise, resulting in flat voltage noise density of 55 nV/√Hz above ~0.1 Hz and only 1.1 µVPP integrated noise from 0.1–10 Hz. Unlike conventional choppers, its architecture avoids switching artifacts in the audio band, preserving signal integrity for DC-coupled sensor interfaces such as load cells and thermopiles where low-frequency stability is paramount.
Is the OPA330AIDBVRG4 pin-compatible with other members of the OPA330 family?
Yes - the OPA330AIDBVRG4 in SOT-23-5 (DBV) shares identical pinout with all other OPA330 variants in SC70-5 (DCK), DSBGA-5 (YFF), and SOIC-8 (D) packages. Pin 1 is OUT, Pin 2 is V–, Pin 3 is +IN, Pin 4 is –IN, and Pin 5 is V+. This allows drop-in replacement across form factors when board space or thermal requirements change - provided layout accommodates the specific package's thermal pad (DBV requires V– connection).
OPA330AIDBVRG4 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:
- 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
OPA330AIDBVRG4 FAQ
1.How can I place an order for OPA330AIDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA330AIDBVRG4 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 OPA330AIDBVRG4 reliable?
The price and inventory of OPA330AIDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA330AIDBVRG4 is usually 5 days.
3.What payment methods are accepted for OPA330AIDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA330AIDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA330AIDBVRG4?
OPA330AIDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA330AIDBVRG4 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 OPA330AIDBVRG4?
For technical support, including OPA330AIDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA330AIDBVRG4 requirements.
6.How does Aetrix verify that OPA330AIDBVRG4 is sourced from the original manufacturer or authorized distributors?
All OPA330AIDBVRG4 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 OPA330AIDBVRG4 meets industry standards.
7.What is the process for return or replacement of OPA330AIDBVRG4?
All OPA330AIDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA330AIDBVRG4, 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 OPA330AIDBVRG4 part is unused and in its original packaging.
Return procedure for OPA330AIDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA330AIDBVRG4 Tags
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