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Texas Instruments OPA330AIDCKT
- Part No.:
- OPA330AIDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
OPA330AIDCKT.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1CIRC SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,210
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Product details
Overview
OPA330AIDCKT 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, and operates from 1.8 V to 5.5 V supply. It is widely used in electronic scales, temperature measurement front-ends, and bidirectional low-side current sensing.
For engineers reviewing the OPA330AIDCKT datasheet, OPA330AIDCKT pinout, OPA330AIDCKT application, or OPA330AIDCKT equivalent, this page provides verified technical context, package-specific pin functions, real-world application mappings, and validated alternative options - all grounded in TI's SBOS432G production datasheet and official package documentation.
Technical Context
The OPA330AIDCKT implements a proprietary auto-calibration architecture that continuously corrects input offset and drift without chopper-induced glitches or high-frequency ripple. Its zero-drift core achieves near-flat 1/f noise profile and eliminates thermal EMF sensitivity under stable layout conditions.
This device is unity-gain stable, features internal EMI filtering on both inputs, supports common-mode voltage range extending 100 mV beyond supply rails, and maintains rail-to-rail output swing within 100 mV of each rail at full load - all while consuming ≤35 µA per amplifier across –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage (VOS) | 50 µV max - ensures <1 LSB error in 16-bit ADC systems with ±2.5 V reference |
| Drift (dVOS/dT) | 0.25 µV/°C max - enables stable DC gain over industrial temperature range without recalibration |
| Quiescent Current (IQ) | 35 µA max - supports >10-year battery life in coin-cell–powered instrumentation |
| Supply Voltage Range | 1.8 V to 5.5 V - compatible with single Li-ion, two alkaline, or regulated 3.3 V/5 V rails |
| Input Voltage Range | (V–) – 0.1 V to (V+) + 0.1 V - true rail-to-rail input with no dead zone or phase reversal |
| Output Swing | Within 100 mV of rails at 10 kΩ load - preserves dynamic range in low-voltage data acquisition |
| Gain-Bandwidth Product | 350 kHz - sufficient for anti-aliasing, sensor buffering, and 100 Hz–1 kHz transducer conditioning |
Pinout & Package
The OPA330AIDCKT is packaged in a 5-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, with exposed die pad not connected internally and no thermal requirement for soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +IN | Noninverting input - high-impedance node (≥1013 Ω), sensitive to thermoelectric gradients; requires symmetrical PCB routing |
| 2 | V– | Negative supply terminal - must be tied to lowest system potential; serves as reference for internal calibration circuitry |
| 3 | OUT | Amplifier output - rail-to-rail capable, drives ≥10 kΩ load, limited to ±5 mA short-circuit current |
| 4 | V+ | Positive supply terminal - accepts 1.8 V–5.5 V; internal EMI filters require clean bypassing (0.1 µF ceramic + 2.2 µF tantalum) |
| 5 | –IN | Inverting input - matched to +IN for CMRR >100 dB; shares same 10 kΩ EMI filter resistors as +IN |
Key Features
| Feature | Design Value |
|---|---|
| Zero-Drift Auto-Calibration | Continuous correction of offset and drift without introducing switching artifacts or degrading noise floor |
| Rail-to-Rail Input/Output | Full input range from V– – 0.1 V to V+ + 0.1 V and output swing to within 100 mV of either rail at 10 kΩ |
| Low 0.1–10 Hz Noise | 1.1 µVPP - enables sub-µV DC stability in precision weigh scale and thermocouple amplification |
| Internal EMI Filtering | 10 kΩ series resistors on both inputs - suppresses RF interference up to 1 GHz without external components |
| Wide Temperature Range | Specified from –40°C to +125°C - suitable for automotive cabin modules and industrial motor control feedback paths |
Applications
| Electronic Scales | Temperature Measurements |
|---|---|
Use Scenario: Amplifying microvolt-level signals from strain-gauge bridges in portable weighing devices. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with ultra-low drift and offset to preserve resolution over temperature cycles. Use Value: Enables 20,000-count readability using 16-bit SAR ADC without software calibration, even after 5-year field deployment. |
Use Scenario: Conditioning output from RTDs and thermistors in HVAC controllers and medical thermometers. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail buffer and gain stage operating directly from 3.3 V battery supply. Use Value: Maintains <±0.1°C accuracy over –20°C to +85°C ambient without cold-junction compensation hardware. |
| Bidirectional Current Sense | Medical Instrumentation |
Use Scenario: Measuring charge/discharge current in wearable health monitors via low-side shunt resistor. IC Role / Device Role / Timing Role: High-common-mode-rejection differential amplifier with 100 dB CMRR at DC and low quiescent current. Use Value: Achieves ±0.5% current measurement accuracy while drawing only 35 µA - critical for multi-day battery runtime. |
Use Scenario: Signal conditioning for ECG electrode interfaces and pulse oximeter analog front-ends. IC Role / Device Role / Timing Role: Low-input-bias-current (±200 pA typ), low-noise amplifier driving ADC input with minimal loading. Use Value: Prevents electrode polarization errors and preserves SNR >85 dB in 0.05–150 Hz biopotential bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDCKT | Lower max offset (10 µV) and drift (0.1 µV/°C); higher IQ (17 µA typ vs 21 µA typ); identical SC70-5 package | Preferred for ultra-high-precision DC measurements where 5 µV offset budget is required | Select OPA333AIDCKT when offset-critical calibration-free operation outweighs 2× cost premium |
| MCP6V81T-E/OT | Higher IQ (60 µA max); wider GBW (1 MHz); same 50 µV VOS but 0.5 µV/°C drift; SC70-5 package | Suitable for higher-speed sensor interfaces requiring faster settling, but less stable over temperature | Choose MCP6V81T-E/OT only if bandwidth >500 kHz is mandatory and thermal drift can be managed via firmware |
Compared with OPA330AIDCKT, OPA333AIDCKT offers tighter DC specs at higher cost and lower power efficiency, while MCP6V81T-E/OT trades drift stability for speed - making OPA330AIDCKT the optimal balance of precision, power, and price for industrial and portable instrumentation.
Availability
OPA330AIDCKT is available at Aetrix Electronics and suitable for electronic scales, temperature measurement modules, and bidirectional current-sense circuits requiring stable component supply across long-lifecycle industrial and medical programs.
Supply support for OPA330AIDCKT 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 specializing in analog, embedded processing, and connectivity technologies, with over 90 years of innovation in precision analog design.
The OPA330AIDCKT belongs to TI's Zero-Drift Operational Amplifier product line, engineered specifically for high-accuracy, low-power signal conditioning in unregulated battery-powered and thermally variable environments.
FAQ
What is the maximum supply voltage for OPA330AIDCKT?
The absolute maximum supply voltage for OPA330AIDCKT is 7 V, but the recommended operating range is 1.8 V to 5.5 V. Exceeding 5.5 V risks permanent damage and invalidates parametric guarantees. At 5.5 V, OPA330AIDCKT maintains full specification compliance including 50 µV VOS and 0.25 µV/°C drift across –40°C to +125°C.
Does OPA330AIDCKT support rail-to-rail input and output simultaneously?
Yes, OPA330AIDCKT supports rail-to-rail input (V– – 0.1 V to V+ + 0.1 V) and rail-to-rail output (within 100 mV of either rail at 10 kΩ load) simultaneously. This capability is verified across its full –40°C to +125°C temperature range and 1.8 V–5.5 V supply range, with no phase reversal or dead zones in the input common-mode region.
What is the typical input bias current of OPA330AIDCKT?
The typical input bias current of OPA330AIDCKT is ±200 pA at 25°C, with a maximum of ±500 pA across –40°C to +125°C. This ultra-low bias enables high-impedance sensor interfacing - such as thermistors and pH electrodes - without significant voltage error or time-constant degradation in RC networks.
Can OPA330AIDCKT drive capacitive loads?
OPA330AIDCKT is unity-gain stable and can safely drive up to 100 pF capacitive load without oscillation, as confirmed in TI's SBOS432G Figure 14. For loads >100 pF, an isolation resistor (≥100 Ω) between output and capacitance is required. The device's open-loop output impedance is 2 kΩ at 350 kHz, limiting slew rate to 0.16 V/µs under heavy capacitive loading.
Is OPA330AIDCKT pin-compatible with other members of the OPA330 family?
No - OPA330AIDCKT (SC70-5) is not pin-compatible with OPA330 variants in SOIC-8, SOT-23-5, or DSBGA-5 packages. Pin mapping differs: SC70-5 uses pins 1(+IN), 2(V–), 3(OUT), 4(V+), 5(–IN); SOIC-8 has NC pins and different terminal ordering. Board redesign is required when changing packages, even within the same OPA330 family.
OPA330AIDCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- SC-70-5
OPA330AIDCKT FAQ
1.How can I place an order for OPA330AIDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA330AIDCKT 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 OPA330AIDCKT reliable?
The price and inventory of OPA330AIDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA330AIDCKT is usually 5 days.
3.What payment methods are accepted for OPA330AIDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA330AIDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA330AIDCKT?
OPA330AIDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA330AIDCKT 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 OPA330AIDCKT?
For technical support, including OPA330AIDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA330AIDCKT requirements.
6.How does Aetrix verify that OPA330AIDCKT is sourced from the original manufacturer or authorized distributors?
All OPA330AIDCKT 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 OPA330AIDCKT meets industry standards.
7.What is the process for return or replacement of OPA330AIDCKT?
All OPA330AIDCKT units undergo pre-shipment inspection (PSI). If there is an issue with OPA330AIDCKT, 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 OPA330AIDCKT part is unused and in its original packaging.
Return procedure for OPA330AIDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA330AIDCKT Tags
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