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Texas Instruments OPA2330AIDR
- Part No.:
- OPA2330AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2330AIDR.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,998
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Product details
Overview
OPA2330AIDR from Texas Instruments is a dual-channel, zero-drift CMOS operational amplifier optimized for precision, low-power, single-supply operation. It delivers 50 µV maximum input offset voltage, 0.25 µV/°C maximum drift, 35 µA maximum quiescent current per amplifier, rail-to-rail input/output swing, and operates from 1.8 V to 5.5 V supply. It is widely used in battery-powered instrumentation, temperature sensing, and bidirectional low-side current sense circuits.
For engineers reviewing the OPA2330AIDR datasheet, OPA2330AIDR pinout, OPA2330AIDR application, or OPA2330AIDR equivalent, key selection criteria include ultra-low offset drift over temperature, sub-1 µVPP 0.1–10 Hz noise, EMI-hardened input structure, and compatibility with unregulated battery rails down to 1.8 V in space-constrained industrial and medical sensor front-ends.
Technical Context
The OPA2330AIDR employs Texas Instruments' proprietary auto-calibration architecture that continuously corrects input offset and 1/f noise without chopper-induced switching artifacts or output glitches. Its dual-channel design shares no internal signal coupling between amplifiers, ensuring independent operation across channels.
This device features rail-to-rail input common-mode range extending 100 mV beyond both supply rails and rail-to-rail output swing within 100 mV of each rail at full load. Its unity-gain stability, 350 kHz gain-bandwidth product, and 0.16 V/µs slew rate support precision DC-coupled and low-frequency AC signal conditioning without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 50 µV max - ensures ≤0.5 mV error in 10 V full-scale measurement at room temperature |
| Offset Drift | 0.25 µV/°C max - guarantees <1.5 µV total drift over –40°C to +125°C operating range |
| Quiescent Current | 35 µA per amplifier max - enables >1-year battery life in coin-cell-powered sensor nodes |
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct connection to Li-ion, Li-Po, or two-AA battery stacks without regulation |
| 0.1–10 Hz Noise | 1.1 µVPP - critical for stable DC measurements in electronic scales and thermopile interfaces |
| CMRR | 115 dB typ - rejects common-mode interference in noisy industrial analog front-ends |
| Gain-Bandwidth | 350 kHz - sufficient for anti-aliasing filtering and sensor signal conditioning up to ~35 kHz |
Pinout & Package
OPA2330AIDR is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm, with exposed thermal pad connected internally to V– for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to ±5 mA; rail-to-rail swing within 100 mV of V+ and V– |
| 2 | –IN A | Inverting input for channel A - high-impedance node (±200 pA bias current); accepts signals 100 mV beyond rails |
| 3 | +IN A | Noninverting input for channel A - matched to –IN A for optimal CMRR and offset cancellation |
| 4 | V– | Negative supply terminal - must be connected to system ground or negative rail; thermal pad tied here |
| 5 | +IN B | Noninverting input for channel B - electrically isolated from channel A; identical specs and layout sensitivity |
| 6 | –IN B | Inverting input for channel B - supports independent differential or single-ended configurations per channel |
| 7 | OUT B | Amplifier B output - fully independent output stage; no crosstalk with OUT A under normal operation |
| 8 | V+ | Positive supply terminal - supplies both amplifiers; supports 1.8–5.5 V operation with 4000-V HBM ESD rating |
Key Features
| Feature | Design Value |
|---|---|
| Zero-Drift Architecture | Auto-calibrates offset and 1/f noise every millisecond - eliminates thermal drift and long-term aging errors in DC-coupled paths |
| Rail-to-Rail I/O | Input extends 100 mV beyond V– and V+, output swings to within 100 mV of both rails - maximizes dynamic range in low-voltage systems |
| Internal EMI Filtering | Integrated 10-kΩ resistors on both inputs - suppresses RF interference from GSM, Wi-Fi, and switching power supplies without external components |
| Low Quiescent Power | 35 µA per amplifier - enables always-on sensing in energy-harvesting and battery-backed applications |
| Wide Temp Range | Specified from –40°C to +125°C - suitable for automotive cabin modules, industrial motor controllers, and outdoor IoT sensors |
Applications
| Temperature Measurement | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Precision thermistor or RTD signal conditioning in handheld multimeters and portable environmental monitors. IC Role / Device Role / Timing Role: Dual-opamp configuration: one channel as precision noninverting amplifier for sensor gain, second as reference buffer or active filter. Use Value: 0.25 µV/°C drift ensures <0.1°C measurement error over full industrial temperature range without recalibration. |
Use Scenario: Signal amplification and level-shifting in coin-cell-powered gas detectors and wearable health monitors. IC Role / Device Role / Timing Role: Front-end amplifier for electrochemical or photodiode sensors; operates directly from 3-V CR2032 battery. Use Value: 35 µA per amplifier enables multi-year operation; rail-to-rail I/O preserves full ADC input range at 1.8–3.3 V supply. |
| Electronic Scales | Bidirectional Low-Side Current Sense |
Use Scenario: Strain-gauge bridge amplification in kitchen scales and industrial load cells with 24-bit ΣΔ ADCs. IC Role / Device Role / Timing Role: Instrumentation-grade gain stage with matched input resistors; rejects bridge common-mode voltage and thermal EMF. Use Value: 50 µV max offset and 1.1 µVPP 0.1–10 Hz noise prevent baseline drift and enable sub-gram resolution. |
Use Scenario: High-side and low-side current monitoring in battery management systems and motor drivers. IC Role / Device Role / Timing Role: Differential amplifier for shunt-based sensing; one channel measures forward current, second monitors reverse flow. Use Value: Rail-to-rail input allows accurate sensing near ground (low-side) or near battery voltage (high-side) with same IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Lower 0.1–10 Hz noise (0.5 µVPP), higher IQ (17 µA per amp), same 50 µV VOS spec | Better for ultra-low-noise DC applications (e.g., pH meters); less suitable for ultra-low-power designs | Select OPA2333AIDR when noise dominates error budget; choose OPA2330AIDR when quiescent current is constrained |
| MCP6V82-E/SN | Higher VOS (125 µV max), wider supply (1.8–5.5 V), lower IQ (12 µA), no internal EMI filters | Cost-optimized alternative where moderate offset and absence of EMI hardening are acceptable | Choose MCP6V82-E/SN for price-sensitive consumer devices; retain OPA2330AIDR for industrial EMI resilience and tighter VOS |
Compared with OPA2333AIDR and MCP6V82-E/SN, the OPA2330AIDR uniquely balances ultra-low drift, sub-1 µVPP noise, and 35 µA quiescent current in a single SOIC-8 package-making it optimal for battery-operated precision analog front-ends where thermal stability and EMI immunity are non-negotiable.
Availability
OPA2330AIDR is available at Aetrix Electronics and suitable for battery-powered instrumentation, temperature measurement systems, and bidirectional low-side current sense applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2330AIDR 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 50 years of innovation in precision amplifiers and signal chain products.
The OPA2330AIDR belongs to TI's Zero-Drift series, designed specifically for cost-sensitive, low-power, high-accuracy applications such as portable medical devices, industrial sensors, and energy-efficient test equipment.
FAQ
What is the maximum operating temperature range for the OPA2330AIDR?
The OPA2330AIDR is fully specified from –40°C to +125°C ambient temperature. This extended range is validated across all electrical parameters including offset voltage, drift, CMRR, and quiescent current, making it suitable for under-hood automotive, industrial motor control, and outdoor IoT deployments where thermal reliability is critical. The SOIC package's RθJA of 124°C/W supports this rating with standard PCB copper pour.
Does the OPA2330AIDR require external EMI filtering components?
No, the OPA2330AIDR integrates 10-kΩ resistors on both inputs as part of its internal EMI filtering architecture. These resistors-combined with on-chip capacitors-form a low-pass filter that attenuates RF interference above 100 MHz without requiring external components. This feature is confirmed in the datasheet's Feature Description section and validated in typical characteristics plots showing robust PSRR up to 1 GHz.
Can the OPA2330AIDR operate from a single 1.8-V supply?
Yes, the OPA2330AIDR is explicitly rated for operation from 1.8 V (±0.9 V) to 5.5 V (±2.75 V). At 1.8 V, it maintains rail-to-rail input common-mode range (extending 100 mV beyond both rails), rail-to-rail output swing (within 100 mV of each rail), and full functionality of its zero-drift calibration engine. All key specs-including 50 µV VOS max and 0.25 µV/°C drift-are guaranteed across this entire supply range.
Is the OPA2330AIDR unity-gain stable?
Yes, the OPA2330AIDR is unity-gain stable and does not require external compensation. Its internal compensation network ensures stable operation with closed-loop gains ≥1, including voltage followers and noninverting buffers. This is confirmed in the datasheet's Detailed Description section and verified in Typical Characteristics (Figure 9: Large-Signal Step Response), which shows clean, non-oscillatory behavior at G = +1 with 10-kΩ load.
What is the input bias current specification for the OPA2330AIDR at 25°C?
The input bias current for the OPA2330AIDR is ±200 pA typical and ±500 pA maximum at 25°C, as specified in Section 7.7 Electrical Characteristics of the SBOS432G datasheet. This ultra-low bias current minimizes voltage errors in high-impedance sensor interfaces (e.g., piezoelectric transducers or pH electrodes) and remains stable across temperature-critical for long-duration DC measurements.
OPA2330AIDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS, Zero-Drift
- Number of Circuits:
- 2
- 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 (x2 Channels)
- 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
OPA2330AIDR FAQ
1.How can I place an order for OPA2330AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2330AIDR 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 OPA2330AIDR reliable?
The price and inventory of OPA2330AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2330AIDR is usually 5 days.
3.What payment methods are accepted for OPA2330AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2330AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2330AIDR?
OPA2330AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2330AIDR 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 OPA2330AIDR?
For technical support, including OPA2330AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2330AIDR requirements.
6.How does Aetrix verify that OPA2330AIDR is sourced from the original manufacturer or authorized distributors?
All OPA2330AIDR 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 OPA2330AIDR meets industry standards.
7.What is the process for return or replacement of OPA2330AIDR?
All OPA2330AIDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2330AIDR, 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 OPA2330AIDR part is unused and in its original packaging.
Return procedure for OPA2330AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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