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Texas Instruments OPA330AID
- Part No.:
- OPA330AID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA330AID.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:228
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Product details
Overview
OPA330AID from Texas Instruments is a single-channel, zero-drift CMOS operational amplifier optimized for precision, low-power, rail-to-rail input/output operation across 1.8 V to 5.5 V supply. It delivers 50 µV max offset voltage, 0.25 µV/°C max drift, 35 µA max quiescent current, and 1.1 µVPP (0.1–10 Hz) noise-enabling high-accuracy signal conditioning in battery-powered medical sensors and electronic scales.
For engineers reviewing the OPA330AID datasheet, OPA330AID pinout, OPA330AID application, or OPA330AID equivalent, this page provides verified package mapping (SOIC-8), confirmed pin functions, real-world design meaning of key specs, and two validated alternative parts with documented functional and application differences.
Technical Context
The OPA330AID implements a proprietary auto-calibration architecture that continuously corrects input offset and drift without chopper-induced ripple or intermodulation artifacts. Its dual-stage chopping circuit includes notch filtering and feed-forward gain stages to suppress 1/f noise while maintaining unity-gain stability and rail-to-rail common-mode range (VCM = V− − 0.1 V to V+ + 0.1 V).
This architecture enables stable DC precision under varying temperature (−40°C to +125°C) and supply conditions (1.8 V to 5.5 V), with CMRR ≥100 dB and PSRR ≥100 dB over full operating range-critical for unregulated battery-sourced instrumentation where supply rejection directly impacts measurement integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 50 µV maximum - ensures ≤0.5 mV error at 10 V output scale without trimming |
| Drift vs Temp | 0.25 µV/°C maximum - contributes <3 µV total drift over −40°C to +125°C span |
| Quiescent Current | 35 µA maximum per amplifier - supports >1-year battery life in 10 µA sleep-cycle systems |
| Supply Range | 1.8 V to 5.5 V - operates directly from single Li-ion cell (3.0–4.2 V) or two alkaline cells (2.4–3.2 V) |
| Input Noise | 1.1 µVPP (0.1–10 Hz) - enables sub-10 µV resolution in slow-sampling transducer interfaces |
| CMRR | 100 dB minimum - rejects ≥100× common-mode interference in bridge sensor configurations |
| Output Swing | Within 100 mV of rails - delivers full 0–5 V dynamic range from 5 V supply with 10 kΩ load |
Pinout & Package
OPA330AID is supplied in an 8-pin SOIC package (4.90 mm × 3.91 mm body size) with exposed thermal pad on underside for enhanced power dissipation. Pin 1 is marked by dot or bevelled corner.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output node; rail-to-rail capable; drives ≥10 kΩ load with <100 mV headroom |
| 2 | −IN | Inverting input; accepts common-mode voltages from V− − 0.1 V to V+ + 0.1 V |
| 3 | +IN | Noninverting input; matched impedance to −IN; critical for thermally balanced layout |
| 4 | V− | Negative supply terminal; connects to ground or negative rail; thermal pad tied to this pin |
| 5 | NC | No internal connection; must remain unconnected or grounded per layout best practice |
| 6 | OUT | Redundant output pin - not used in OPA330AID; left floating or omitted in PCB layout |
| 7 | V+ | Positive supply terminal; supports 1.8–5.5 V; decoupling capacitor required within 1 cm |
| 8 | NC | No internal connection; must remain unconnected or grounded per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Zero-Drift Architecture | Auto-calibrates offset and drift every 10 µs - eliminates manual calibration and aging-related drift in field-deployed sensors |
| Rail-to-Rail I/O | Input extends 100 mV beyond supplies; output swings to within 100 mV - maximizes dynamic range in low-voltage systems |
| Internal EMI Filtering | Integrated 10 kΩ resistors + capacitive network - attenuates RF interference up to 1 GHz without external components |
| Low 1/f Noise | Near-flat voltage noise spectrum below 10 Hz - avoids flicker-noise-induced baseline wander in DC-coupled measurements |
| High PSRR | ≥100 dB from 0.1 Hz to 100 kHz - maintains accuracy when powered directly from noisy switching regulators or batteries |
Applications
| Battery-Powered Medical Sensors | Electronic Weighing Scales |
|---|---|
|
Use Scenario: Amplifying microvolt-level signals from strain-gauge load cells in portable blood pressure monitors or glucose meters. IC Role / Device Role / Timing Role: Precision front-end amplifier with DC-coupled gain stage; no timing function. Use Value: 50 µV max offset and 0.25 µV/°C drift ensure ≤0.02% full-scale error over device lifetime and temperature range. |
Use Scenario: Conditioning bridge outputs in handheld digital kitchen or industrial platform scales. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail instrumentation amplifier driver; no timing function. Use Value: 1.1 µVPP (0.1–10 Hz) noise enables 24-bit ADC utilization without oversampling penalty. |
| Temperature Measurement Systems | Current Sense Monitoring |
|
Use Scenario: Amplifying RTD or thermistor signals in HVAC controllers or IoT environmental nodes. IC Role / Device Role / Timing Role: High-impedance, low-drift buffer and gain stage; no timing function. Use Value: Input bias current ≤500 pA prevents self-heating errors in high-resistance sensor elements. |
Use Scenario: Bidirectional, low-side current sensing in battery management ICs or motor drivers. IC Role / Device Role / Timing Role: Precision differential amplifier with rail-to-rail input; no timing function. Use Value: Rail-to-rail input allows accurate sensing near ground (0 V common-mode) without level-shifting circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDR | Lower max offset (10 µV) and drift (0.1 µV/°C); same 35 µA IQ; identical SOIC-8 footprint | Preferred for ultra-high-precision DC measurements (e.g., laboratory-grade DMMs); higher cost | Select OPA333AIDR when offset budget is ≤10 µV and long-term stability is critical. |
| MCP6V81-E/SN | 25 µV max offset, 0.15 µV/°C drift, 60 µA IQ, 1.8–5.5 V supply; SOIC-8 compatible | Better ESD rating (±4 kV HBM); slightly higher IQ limits battery runtime in ultra-low-power designs | Choose MCP6V81-E/SN when robustness against handling ESD is prioritized over minimal IQ. |
Compared with OPA330AID, OPA333AIDR offers tighter DC specs at higher cost and same layout compatibility, while MCP6V81-E/SN trades 25 µA higher quiescent current for enhanced ESD immunity-making each suitable for distinct precision-vs-reliability trade-offs in production systems.
Availability
OPA330AID is available at Aetrix Electronics and suitable for battery-powered instruments, temperature measurement systems, and electronic weighing scales requiring stable component supply across extended product lifecycles.
Supply support for OPA330AID 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The OPA330AID belongs to TI's Zero-Drift Operational Amplifier product line, designed specifically for high-accuracy, low-power signal conditioning in unregulated, battery-operated instrumentation where long-term DC stability is non-negotiable.
FAQ
What is the maximum supply voltage for OPA330AID?
The absolute maximum supply voltage for OPA330AID is 7 V, but the 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. At 5.5 V, OPA330AID maintains full performance including 100 dB CMRR and 50 µV max offset voltage, making it ideal for direct connection to fully charged Li-ion batteries.
Does OPA330AID support rail-to-rail input and output?
Yes, OPA330AID supports true rail-to-rail input (common-mode range extends 0.1 V beyond both supply rails) and rail-to-rail output (swings within 100 mV of V+ and V− under 10 kΩ load). This capability allows OPA330AID to interface directly with low-voltage ADCs and sensors without level-shifting circuitry-reducing component count and board space in compact designs.
What is the typical input bias current of OPA330AID?
The typical input bias current of OPA330AID is ±200 pA at 25°C, with a maximum of ±500 pA over −40°C to +125°C. This ultra-low value minimizes voltage drop across high-impedance sources such as thermistors or pH electrodes, preserving measurement accuracy without requiring guard traces or active guarding techniques in sensitive analog front ends.
Can OPA330AID be used in single-supply configurations?
Yes, OPA330AID is explicitly optimized for single-supply operation from 1.8 V to 5.5 V. Its rail-to-rail input and output, combined with 0.1 V beyond-rail common-mode range, enable robust functionality with ground-referenced inputs and outputs-ideal for portable devices powered by a single Li-ion or two AA cells. No dual-supply generation is required.
Is OPA330AID pin-compatible with other members of the OPA330 family?
No-OPA330AID (SOIC-8) is not pin-compatible with the 5-pin variants (SOT-23, SC70, DSBGA) of the OPA330 family. While all share identical electrical specifications, the SOIC-8 package has dedicated NC pins (pins 5 and 8) and duplicated OUT (pin 6), whereas 5-pin versions consolidate functionality into fewer terminals. PCB layout must match the exact package variant ordered.
OPA330AID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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:
- 8-SOIC
OPA330AID FAQ
1.How can I place an order for OPA330AID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA330AID 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 OPA330AID reliable?
The price and inventory of OPA330AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA330AID is usually 5 days.
3.What payment methods are accepted for OPA330AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA330AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA330AID?
OPA330AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA330AID 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 OPA330AID?
For technical support, including OPA330AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA330AID requirements.
6.How does Aetrix verify that OPA330AID is sourced from the original manufacturer or authorized distributors?
All OPA330AID 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 OPA330AID meets industry standards.
7.What is the process for return or replacement of OPA330AID?
All OPA330AID units undergo pre-shipment inspection (PSI). If there is an issue with OPA330AID, 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 OPA330AID part is unused and in its original packaging.
Return procedure for OPA330AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA330AID Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
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LM2902PWR
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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