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Texas Instruments OPA2330AIDRBR
- Part No.:
- OPA2330AIDRBR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
OPA2330AIDRBR.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:9,447
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Product details
Overview
OPA2330AIDRBR 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 used in battery-powered instrumentation, temperature sensing, and bidirectional low-side current sense circuits.
For engineers reviewing the OPA2330AIDRBR datasheet, OPA2330AIDRBR pinout, OPA2330AIDRBR application, or OPA2330AIDRBR 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.
Technical Context
The OPA2330AIDRBR employs a proprietary auto-calibration architecture that continuously corrects input offset and 1/f noise without introducing switching artifacts or output glitches. Its chopper-stabilized core integrates notch filtering and feed-forward gain stages to maintain unity-gain stability while achieving near-zero drift across –40°C to +125°C.
This dual op-amp features rail-to-rail inputs extending 100 mV beyond supply rails and outputs swinging within 100 mV of rails under 10-kΩ load. Its 350-kHz gain-bandwidth product and 0.16 V/µs slew rate support stable DC-coupled signal conditioning in high-impedance sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 50 µV max - ensures ≤0.5 mV error in 10 V full-scale measurement at room temperature |
| Drift vs Temp | 0.25 µV/°C max - contributes <3 µV total offset shift across –40°C to +125°C operating range |
| Quiescent Current | 35 µA per amp max - enables multi-year battery life in always-on 3 V coin-cell applications |
| Supply Range | 1.8 V to 5.5 V - supports direct connection to Li-ion (3.0–4.2 V), alkaline (1.8–3.2 V), or regulated 3.3 V rails |
| Input Noise (0.1–10 Hz) | 1.1 µVPP - suitable for µV-level thermocouple or strain gauge amplification without external filtering |
| CMRR | 115 dB typ - rejects common-mode interference in noisy industrial sensor nodes |
| GBW | 350 kHz - provides adequate phase margin for unity-gain stable transducer signal conditioning |
Pinout & Package
OPA2330AIDRBR is housed in an 8-pin SON (DRB) package measuring 3.0 mm × 3.0 mm with exposed thermal pad on underside. The pad must be connected to V– for optimal thermal performance and EMI suppression.
| 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–/V+ |
| 2 | –IN A | Inverting input A - high-impedance node (2 pF differential capacitance); accepts signals 0.1 V beyond rails |
| 3 | +IN A | Noninverting input A - matched to –IN A for minimal input bias current mismatch (±400 pA max IOS) |
| 4 | V– | Negative supply - reference for both amplifiers; thermal pad must be soldered to this net |
| 5 | +IN B | Noninverting input B - electrically isolated from Channel A; same CM range and bias specs as +IN A |
| 6 | –IN B | Inverting input B - independent channel input; no crosstalk with Channel A above 100 dB at DC |
| 7 | OUT B | Amplifier B output - identical drive capability and rail-swing behavior as OUT A |
| 8 | V+ | Positive supply - supplies both amplifiers; PSRR ≥100 dB minimizes supply ripple coupling to output |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-calibration | Continuous correction eliminates thermal and time-dependent offset drift without output interruption |
| Rail-to-rail I/O | Input range extends (V–) – 0.1 V to (V+) + 0.1 V; output swings to within 100 mV of either rail at 10-kΩ load |
| Internal EMI filtering | 10-kΩ series resistors + internal capacitance suppress RF rectification from 100 MHz–2 GHz cellular/WiFi bands |
| Low 1/f noise | Flat voltage noise density (55 nV/√Hz) from 1 kHz; 1.1 µVPP in 0.1–10 Hz band enables DC-coupled µV sensing |
| High CMRR & PSRR | 115 dB CMRR and ≥100 dB PSRR ensure stable gain accuracy in unregulated, noisy power environments |
Applications
| Battery-Powered Instrumentation | Temperature Measurement |
|---|---|
Use Scenario: Portable multimeter front-end amplifying mV-range thermocouple or RTD bridge outputs. IC Role / Device Role / Timing Role: Precision DC gain stage with ultra-low drift to preserve calibration integrity over field temperature excursions. Use Value: 0.25 µV/°C drift limits measurement error to <3 µV across –20°C to +70°C ambient, enabling 0.1°C resolution without recalibration. |
Use Scenario: Digital thermostat using NTC thermistor in voltage divider configuration. IC Role / Device Role / Timing Role: Rail-to-rail buffer and gain amplifier driving 12-bit SAR ADC input. Use Value: 1.8 V minimum supply allows direct operation from two AA cells; 1.1 µVPP noise avoids averaging overhead in firmware. |
| Transducer Signal Conditioning | Bidirectional Low-Side Current Sense |
Use Scenario: Strain gauge Wheatstone bridge output amplification in structural health monitoring sensor node. IC Role / Device Role / Timing Role: Instrumentation-grade difference amplifier with matched input impedance and high CMRR. Use Value: 115 dB CMRR rejects bridge excitation noise; 50 µV VOS enables <10 ppm full-scale error in 100 mV bridge output. |
Use Scenario: Bidirectional motor current monitoring via shunt resistor placed between load and ground. IC Role / Device Role / Timing Role: Dual-op-amp configured as inverting amplifier (Channel A) and noninverting amplifier (Channel B) for polarity detection. Use Value: Rail-to-rail input accommodates common-mode voltage near ground; 35 µA IQ extends runtime in always-on motor control safety circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision, low-power operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6V81-E/SN | Single-channel, 25 µV VOS max, 0.15 µV/°C drift, 60 µA IQ, SOIC-8 only | Lacks dual-channel integration; higher IQ reduces battery life in space-constrained dual-sensor systems | Select when single-channel function suffices and tighter initial offset is prioritized over dual-channel consolidation |
| AD8638ARZ-REEL7 | Dual-channel, 10 µV VOS max, 0.05 µV/°C drift, 125 µA IQ, SOIC-8 | Higher quiescent current limits use in multi-year battery applications; larger SOIC footprint vs. SON | Choose for ultra-high DC precision where power budget permits >3× higher IQ than OPA2330AIDRBR |
Compared with MCP6V81-E/SN and AD8638ARZ-REEL7, the OPA2330AIDRBR uniquely balances dual-channel integration, sub-50 µV offset, ultra-low drift, and micro-power operation in a 3×3 mm SON package-making it optimal for compact, long-life, precision analog front-ends.
Availability
OPA2330AIDRBR is available at Aetrix Electronics and suitable for battery-powered instrumentation, temperature measurement systems, and bidirectional low-side current sense circuits requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for OPA2330AIDRBR 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 specializing in analog and embedded processing technologies, with leadership in precision amplifiers, data converters, and power management ICs.
The OPA2330AIDRBR belongs to TI's Zero-Drift Op-Amp family, designed specifically for cost-sensitive, battery-operated precision signal chains where long-term DC accuracy and low power consumption are critical.
FAQ
What is the maximum supply voltage for OPA2330AIDRBR?
The absolute maximum supply voltage for OPA2330AIDRBR is 7 V, but the recommended operating range is 1.8 V to 5.5 V. Operation above 5.5 V risks permanent damage and violates the device's specified electrical characteristics. At 5.5 V, the OPA2330AIDRBR maintains full performance including 115 dB CMRR and 35 µA maximum quiescent current per amplifier.
Does OPA2330AIDRBR support rail-to-rail input with signals below ground?
Yes - the OPA2330AIDRBR input common-mode voltage range extends to (V–) – 0.1 V, allowing inputs 100 mV below the negative rail. When V– = 0 V (single-supply), this enables valid operation with inputs down to –0.1 V. This feature is essential for accurately capturing small negative transients in current-sense or sensor-biasing applications without level-shifting circuitry.
Can OPA2330AIDRBR drive capacitive loads directly?
The OPA2330AIDRBR is unity-gain stable and can drive up to 100 pF capacitive load without oscillation, as verified in typical characteristics (Figure 14). For loads exceeding 100 pF, a series isolation resistor (e.g., 10–50 Ω) between amplifier output and capacitor is recommended to maintain phase margin. The device's 2 kΩ open-loop output impedance at 350 kHz further supports robust capacitive loading behavior.
What is the thermal pad connection requirement for OPA2330AIDRBR in DRB package?
The exposed thermal die pad on the underside of the OPA2330AIDRBR DRB package must be soldered to the V– (ground) net on the PCB. This connection is mandatory for thermal dissipation, EMI suppression, and meeting the specified RθJB of 22.2°C/W. Leaving the pad floating degrades thermal performance by >150°C/W and increases susceptibility to RF interference.
How does the auto-calibration architecture of OPA2330AIDRBR affect system-level noise?
The OPA2330AIDRBR's auto-calibration eliminates 1/f (flicker) noise, resulting in flat 55 nV/√Hz voltage noise density above 1 kHz and only 1.1 µVPP integrated noise from 0.1 Hz to 10 Hz. Unlike traditional choppers, its architecture introduces no switching artifacts or intermodulation distortion, preserving signal integrity in precision DC and low-frequency AC measurements without requiring external post-filtering.
OPA2330AIDRBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- 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-SON (3x3)
OPA2330AIDRBR FAQ
1.How can I place an order for OPA2330AIDRBR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2330AIDRBR 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 OPA2330AIDRBR reliable?
The price and inventory of OPA2330AIDRBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2330AIDRBR is usually 5 days.
3.What payment methods are accepted for OPA2330AIDRBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2330AIDRBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2330AIDRBR?
OPA2330AIDRBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2330AIDRBR 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 OPA2330AIDRBR?
For technical support, including OPA2330AIDRBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2330AIDRBR requirements.
6.How does Aetrix verify that OPA2330AIDRBR is sourced from the original manufacturer or authorized distributors?
All OPA2330AIDRBR 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 OPA2330AIDRBR meets industry standards.
7.What is the process for return or replacement of OPA2330AIDRBR?
All OPA2330AIDRBR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2330AIDRBR, 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 OPA2330AIDRBR part is unused and in its original packaging.
Return procedure for OPA2330AIDRBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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