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Texas Instruments OPA2330AID
- Part No.:
- OPA2330AID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2330AID.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:271
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Product details
Overview
OPA2330AID from Texas Instruments is a dual-channel, zero-drift CMOS operational amplifier optimized for precision, low-power, single-supply operation. It delivers 50 µV max input offset voltage, 0.25 µV/°C max drift, 35 µA max quiescent current per amplifier, rail-to-rail input/output swing, and operates from 1.8 V to 5.5 V. It is widely used in battery-powered instrumentation, temperature sensing, and bidirectional low-side current sense circuits.
For engineers reviewing the OPA2330AID datasheet, OPA2330AID pinout, OPA2330AID application, or OPA2330AID equivalent, this page provides verified technical context, package mapping, real-world use scenarios, and validated alternative options - all grounded in TI's SBOS432G production data sheet and official package documentation.
Technical Context
The OPA2330AID uses proprietary auto-calibration circuitry to continuously correct input offset and eliminate 1/f noise, enabling stable DC precision over time and temperature without external trimming. Its dual-channel architecture shares no internal signal coupling, ensuring channel separation of ≤0.1 µV/V (dc) and independent operation across –40°C to +125°C.
This device is unity-gain stable and free from output phase reversal, with rail-to-rail inputs extending 100 mV beyond supply rails and outputs swinging within 100 mV of rails under load. Its 350 kHz gain-bandwidth product and 0.16 V/µs slew rate support moderate-speed precision signal conditioning in resource-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 50 µV maximum - ensures minimal baseline error in DC-coupled sensor interfaces and current-sense amplifiers. |
| Offset Drift | 0.25 µV/°C maximum - enables stable long-term accuracy in unregulated battery-powered equipment across industrial temperature range. |
| Quiescent Current | 35 µA per amplifier maximum - supports multi-year operation on coin-cell batteries in portable medical or handheld test devices. |
| Supply Voltage Range | 1.8 V to 5.5 V - allows direct connection to Li-ion, Li-Po, or two-alkaline-cell supplies without LDO regulation. |
| Input Common-Mode Range | (V–) – 0.1 V to (V+) + 0.1 V - supports true rail-to-rail sensing at supply extremes, critical for low-voltage transducer front-ends. |
| Output Swing | Within 100 mV of rails (at 10 kΩ load) - preserves dynamic range in single-supply 3.3 V or lower systems. |
| Gain-Bandwidth Product | 350 kHz - sufficient for anti-aliasing, sensor filtering, and slow-loop control applications without stability risk. |
Pinout & Package
OPA2330AID is packaged in an 8-pin SOIC (D package), 4.90 mm × 3.91 mm body size, with exposed thermal pad connected to V– for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives feedback network or downstream ADC input; rail-to-rail capable. |
| 2 | –IN A | Inverting input for channel A - connects to feedback resistor or inverting gain node in transimpedance configurations. |
| 3 | +IN A | Noninverting input for channel A - accepts reference, sensor, or buffered signal; common-mode range extends beyond rails. |
| 4 | V– | Negative supply terminal - must be tied to ground or negative rail; thermal die pad (underside) is electrically connected to this pin. |
| 5 | +IN B | Noninverting input for channel B - independent of channel A; supports dual-sensor or differential pair topologies. |
| 6 | –IN B | Inverting input for channel B - isolated from channel A; enables separate gain paths without crosstalk. |
| 7 | OUT B | Amplifier B output - fully independent output stage; supports dual-channel signal conditioning or redundancy. |
| 8 | V+ | Positive supply terminal - accepts 1.8–5.5 V; internal EMI filtering improves immunity in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-Drift Auto-Calibration | Continuous correction eliminates aging and thermal drift effects - maintains <50 µV offset across full –40°C to +125°C range. |
| Rail-to-Rail Input/Output | Input accepts signals 100 mV beyond supply rails; output swings to within 100 mV of rails - maximizes usable dynamic range in low-voltage systems. |
| Internal EMI Filtering | Integrated 10-kΩ resistors on both inputs suppress RF interference - reduces need for external filtering in automotive or industrial EMI-prone layouts. |
| Low 0.1–10 Hz Noise | 1.1 µVPP - enables high-resolution DC measurements in electronic scales and thermocouple amplifiers without additional averaging. |
| Unity-Gain Stable | No external compensation required - simplifies design of buffers, followers, and gain-of-one sensor interfaces. |
Applications
| Battery-Powered Instrumentation | Temperature Measurement |
|---|---|
Use Scenario: Portable multimeter or handheld pH meter operating from two AA cells (3 V nominal) with no voltage regulation. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one amplifier buffers thermistor voltage, the other amplifies reference for ratiometric ADC conversion. Use Value: 35 µA per amplifier enables >5-year battery life; rail-to-rail I/O captures full sensor range without level-shifting. |
Use Scenario: Industrial RTD or thermocouple front-end in a programmable logic controller (PLC) module. IC Role / Device Role / Timing Role: Precision instrumentation amplifier core: configured as difference amplifier with matched external resistors to reject common-mode noise. Use Value: 0.25 µV/°C drift ensures <0.1°C measurement error over –25°C to +75°C ambient without calibration. |
| Electronic Scales | Bidirectional Low-Side Current Sense |
Use Scenario: Consumer kitchen scale using micro-strain gauge bridge with 3.3 V MCU supply. IC Role / Device Role / Timing Role: First-stage gain amplifier for Wheatstone bridge output; second channel conditions reference voltage for ADC. Use Value: 50 µV max VOS avoids zero-point calibration drift; 1.1 µVPP 0.1–10 Hz noise prevents flicker-induced weight instability. |
Use Scenario: Battery management system monitoring charge/discharge current through shunt resistor in 2S Li-ion pack. IC Role / Device Role / Timing Role: Dual-opamp configuration: one channel amplifies shunt voltage for discharge path, the other for charge path with polarity inversion. Use Value: Independent channels enable simultaneous bidirectional sensing; rail-to-rail input handles near-ground common-mode voltages. |
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 | Same zero-drift architecture but 17 µA IQ (vs. 35 µA), 350 kHz GBW, and 0.17 V/µs SR; specified down to –55°C. | Better suited for ultra-low-power, extended-temperature deployments where quiescent current dominates battery budget. | Select OPA2333AIDR when sub-20 µA per amplifier is mandatory and 0.17 V/µs slew suffices. |
| MCP6V72-E/SN | Microchip zero-drift dual op-amp: 25 µA IQ, 650 kHz GBW, 0.4 V/µs SR, 25 µV VOS max, but only rated to +125°C (not +125°C continuous). | Higher bandwidth supports faster settling in multi-channel data acquisition; slightly lower VOS improves initial accuracy. | Choose MCP6V72-E/SN when higher speed is needed and extended high-temp reliability is not required. |
Compared with OPA2330AID, OPA2333AIDR offers halved quiescent current at identical precision, while MCP6V72-E/SN trades some thermal robustness for higher bandwidth and marginally better offset - making each suitable for distinct power-speed-temperature trade-offs.
Availability
OPA2330AID is available at Aetrix Electronics and suitable for battery-powered instrumentation, temperature measurement systems, electronic scales, and bidirectional low-side current sense applications requiring stable component supply across industrial temperature ranges and multi-year production cycles.
Supply support for OPA2330AID 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 and embedded processing technologies, with decades of expertise in precision amplifiers and low-power signal chain solutions.
The OPA2330AID belongs to TI's Zero-Drift Series, designed specifically for cost-sensitive, battery-operated, and high-accuracy measurement applications where long-term DC stability and minimal power consumption are critical.
FAQ
What is the maximum operating temperature range for the OPA2330AID?
The OPA2330AID is fully specified from –40°C to +125°C ambient temperature, with electrical characteristics guaranteed across this full industrial range. Thermal metrics such as RθJA = 124°C/W (SOIC) and RθJC = 73.7°C/W confirm its suitability for high-temperature PCB environments when properly mounted with thermal vias to ground plane.
Does the OPA2330AID require external compensation for unity-gain stability?
No, the OPA2330AID is internally compensated and unity-gain stable - no external capacitors or resistors are needed for stable operation at gain = 1. This simplifies layout in buffer, follower, and gain-of-one sensor interface designs while maintaining phase margin >60° across process, voltage, and temperature.
Can the OPA2330AID operate from a single 2.0-V supply?
Yes, the OPA2330AID supports single-supply operation down to 1.8 V (±0.9 V), so it functions reliably at 2.0 V. At this voltage, key parameters remain valid: input common-mode range extends from –0.1 V to +2.1 V, output swings within 100 mV of rails, and quiescent current stays ≤35 µA per amplifier.
What is the purpose of the exposed thermal pad on the OPA2330AID SOIC package?
The exposed thermal pad on the underside of the OPA2330AID SOIC (D package) is electrically connected to the V– pin and must be soldered to a PCB copper pour tied to the system ground or negative supply. Doing so reduces junction-to-board thermal resistance (RθJB = 64.4°C/W) and improves long-term reliability under sustained load.
How does the OPA2330AID handle input overvoltage conditions?
The OPA2330AID input terminals are diode-clamped to the supply rails. Inputs exceeding (V–) – 0.3 V or (V+) + 0.3 V must be current-limited to ≤10 mA using series resistors. The internal 10-kΩ EMI filters help absorb transient energy, but sustained overvoltage without external limiting risks permanent damage per Absolute Maximum Ratings.
OPA2330AID 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:
- 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
OPA2330AID FAQ
1.How can I place an order for OPA2330AID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2330AID 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 OPA2330AID reliable?
The price and inventory of OPA2330AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2330AID is usually 5 days.
3.What payment methods are accepted for OPA2330AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2330AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2330AID?
OPA2330AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2330AID 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 OPA2330AID?
For technical support, including OPA2330AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2330AID requirements.
6.How does Aetrix verify that OPA2330AID is sourced from the original manufacturer or authorized distributors?
All OPA2330AID 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 OPA2330AID meets industry standards.
7.What is the process for return or replacement of OPA2330AID?
All OPA2330AID units undergo pre-shipment inspection (PSI). If there is an issue with OPA2330AID, 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 OPA2330AID part is unused and in its original packaging.
Return procedure for OPA2330AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2330AID Tags
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