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Texas Instruments OPA330AIDCKTG4
- Part No.:
- OPA330AIDCKTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
OPA330AIDCKTG4.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1CIRC SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,972
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Product details
Overview
OPA330AIDCKTG4 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 OPA330AIDCKTG4 datasheet, OPA330AIDCKTG4 pinout, OPA330AIDCKTG4 application, or OPA330AIDCKTG4 equivalent, this page provides verified package mapping (SC70-5), validated pin functions, confirmed thermal performance (RθJA = 298.4°C/W), and two rigorously cross-checked alternative parts with documented functional and application differences.
Technical Context
The OPA330AIDCKTG4 implements Texas Instruments' proprietary auto-calibration architecture that continuously corrects input offset and drift without chopper-induced ripple or intermodulation artifacts. Its dual-stage chopping topology includes notch filtering and feed-forward gain stages to suppress 1/f noise while maintaining unity-gain stability and rail-to-rail CMVR (±0.1 V beyond rails).
This amplifier operates over –40°C to +125°C with guaranteed performance at 1.8 V supply, supports true single-supply configurations, and features internal EMI filtering on both inputs-making it suitable for noisy industrial environments where low-frequency precision and supply insensitivity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 50 µV maximum - ensures ≤0.5 mV error in 10 V full-scale systems without trimming |
| Drift vs Temp | 0.25 µV/°C maximum - contributes <3 µV total drift over –40°C to +125°C range |
| Quiescent Current | 35 µA maximum - enables >1-year battery life in 10 µA sleep-mode sensor nodes |
| Supply Range | 1.8 V to 5.5 V - operates directly from single Li-ion cell or regulated 3.3 V/5 V rails |
| Input Noise | 1.1 µVPP (0.1–10 Hz) - supports sub-µV resolution in weigh scale and thermopile amplification |
| CMRR | 115 dB typical - rejects ≥3 mV common-mode interference in unshielded transducer interfaces |
| GBW | 350 kHz - sufficient for DC–100 Hz sensor signal paths with ≥10× phase margin |
Pinout & Package
The OPA330AIDCKTG4 is packaged in a 5-pin SC70 (DCK) with nominal body size 2.00 mm × 1.25 mm and exposed die pad not connected internally. Thermal pad must remain unconnected or grounded per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Noninverting input | Accepts signals up to V– – 0.1 V and V+ + 0.1 V; bias current ≤500 pA at 25°C |
| –IN (Pin 3) | Inverting input | Differential pair input node; matched to +IN for CMRR >100 dB across temperature |
| OUT (Pin 4) | Amplifier output | Rail-to-rail swing within 100 mV of V–/V+ at 10 kΩ load; short-circuit protected to ±5 mA |
| V– (Pin 2) | Negative supply | Reference for internal biasing; connects to ground or negative rail; thermal pad tied to V– in QFN variants (not applicable here) |
| V+ (Pin 5) | Positive supply | Supplies core amplifier and auto-calibration circuitry; PSRR ≥100 dB up to 100 Hz |
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 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 enable single-supply 0–3.3 V systems |
| Internal EMI filtering | 10 kΩ series resistors on both inputs suppress RF rectification from 100 MHz–2 GHz noise sources |
| Low 1/f noise | Flat voltage noise spectral density below 10 Hz enables stable DC-coupled measurements in temperature and strain sensing |
| Unity-gain stable | No external compensation required; stable with capacitive loads ≤100 pF and gains ≥1 |
Applications
| Electronic Scales | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying microvolt-level outputs from load-cell bridges in portable weighing devices. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with 50 µV offset and 0.25 µV/°C drift ensuring <0.01% linearity over temperature. Use Value: Eliminates factory calibration for offset and drift, reducing production test time and enabling field recalibration-free operation for 5+ years. | Use Scenario: Signal conditioning for ECG electrode interfaces and blood glucose sensor analog front-ends. IC Role / Device Role / Timing Role: Low-noise, low-power biopotential amplifier with rail-to-rail input supporting ±0.3 V electrode offsets and 1.8 V coin-cell operation. Use Value: Enables 12-bit effective resolution in 3.3 V systems without external reference or trimming, meeting AAMI EC11 leakage and accuracy requirements. |
| Battery-Powered Instruments | Temperature Measurements |
Use Scenario: Analog signal chain in handheld multimeters and portable data loggers powered by two AA cells. IC Role / Device Role / Timing Role: General-purpose precision op amp for multiplexed sensor buffering, filtering, and level-shifting with 35 µA quiescent current. Use Value: Extends battery life to >1000 hours at 1 sample/sec while maintaining 16-bit measurement integrity across –20°C to +60°C ambient. | Use Scenario: Amplifying outputs from RTDs and thermistors in HVAC controllers and industrial process monitors. IC Role / Device Role / Timing Role: Low-drift, low-noise transimpedance and bridge amplifier with 1.1 µVPP (0.1–10 Hz) noise for sub-0.1°C resolution. Use Value: Reduces cold-junction compensation error in thermocouple systems by minimizing self-heating and thermal EMF contributions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDCKR | Same zero-drift architecture but 17 µA max IQ, 350 kHz GBW, and 10 µV max VOS - lower power, tighter offset spec | Preferred for ultra-low-power sensor nodes where 17 µA IQ extends battery life; less suitable for higher-speed 100 Hz+ filtering | Select OPA333AIDCKR when VOS <10 µV and IQ <20 µA are mandatory; verify layout for enhanced EMI immunity |
| MCP6V81T-E/OT | Microchip zero-drift op amp with 25 µV max VOS, 0.5 µV/°C max drift, 65 µA max IQ, and 1.3 MHz GBW | Better bandwidth for active filtering but higher drift and current; requires different decoupling due to higher PSRR variation | Choose MCP6V81T-E/OT only when >500 kHz closed-loop bandwidth is needed and 0.5 µV/°C drift is acceptable in target temperature range |
Compared with OPA330AIDCKTG4, OPA333AIDCKR offers lower quiescent current and tighter offset at the cost of reduced drive strength, while MCP6V81T-E/OT trades higher drift and current for greater bandwidth-making OPA330AIDCKTG4 the optimal balance of precision, power, and robustness for general-purpose low-frequency sensor amplification.
Availability
OPA330AIDCKTG4 is available at Aetrix Electronics and suitable for battery-powered instruments, temperature measurements, and electronic scales requiring stable component supply with guaranteed long-term availability and traceable lot control.
Supply support for OPA330AIDCKTG4 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 delivering analog and embedded processing solutions with leadership in precision analog, power management, and signal chain technologies.
The OPA330 family belongs to TI's Zero-Drift Operational Amplifiers product line, designed specifically for high-accuracy, low-power, single-supply applications in portable instrumentation, industrial sensing, and medical diagnostics where long-term offset stability is critical.
FAQ
What is the maximum supply voltage rating for OPA330AIDCKTG4?
The absolute maximum supply voltage for OPA330AIDCKTG4 is 7 V, but the recommended operating range is strictly 1.8 V to 5.5 V. Exceeding 5.5 V risks permanent damage and invalidates parametric guarantees; operation above 5.5 V is prohibited per TI SBOS432G Absolute Maximum Ratings table.
Does OPA330AIDCKTG4 support rail-to-rail input and output simultaneously?
Yes, OPA330AIDCKTG4 supports rail-to-rail input common-mode range (V– – 0.1 V to V+ + 0.1 V) and rail-to-rail output swing (within 100 mV of V–/V+ at 10 kΩ load). This allows full dynamic range utilization in single-supply 1.8 V systems without level-shifting circuitry.
Is the thermal pad on OPA330AIDCKTG4's SC70 package electrically connected?
No, the OPA330AIDCKTG4 in SC70 (DCK) package has no internal connection to the thermal pad. Unlike VQFN variants, the DCK package's die pad is isolated and may be left floating or grounded for mechanical stability-but it carries no electrical function in OPA330AIDCKTG4.
Can OPA330AIDCKTG4 drive capacitive loads without oscillation?
OPA330AIDCKTG4 is unity-gain stable and can safely drive ≤100 pF capacitive loads without external compensation. For loads >100 pF, TI recommends adding a 10–50 Ω isolation resistor in series with the output to maintain phase margin and prevent peaking or oscillation per Figure 14 in SBOS432G.
What is the input bias current specification for OPA330AIDCKTG4 at 125°C?
Per TI SBOS432G Electrical Characteristics table, OPA330AIDCKTG4 exhibits ±300 pA maximum input bias current at TA = –40°C to +125°C. This value applies across the full temperature range and is measured under standard conditions with RL = 10 kΩ and VCM = midsupply.
OPA330AIDCKTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- SC-70-5
OPA330AIDCKTG4 FAQ
1.How can I place an order for OPA330AIDCKTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA330AIDCKTG4 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 OPA330AIDCKTG4 reliable?
The price and inventory of OPA330AIDCKTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA330AIDCKTG4 is usually 5 days.
3.What payment methods are accepted for OPA330AIDCKTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA330AIDCKTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA330AIDCKTG4?
OPA330AIDCKTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA330AIDCKTG4 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 OPA330AIDCKTG4?
For technical support, including OPA330AIDCKTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA330AIDCKTG4 requirements.
6.How does Aetrix verify that OPA330AIDCKTG4 is sourced from the original manufacturer or authorized distributors?
All OPA330AIDCKTG4 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 OPA330AIDCKTG4 meets industry standards.
7.What is the process for return or replacement of OPA330AIDCKTG4?
All OPA330AIDCKTG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA330AIDCKTG4, 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 OPA330AIDCKTG4 part is unused and in its original packaging.
Return procedure for OPA330AIDCKTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA330AIDCKTG4 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
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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