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Texas Instruments OPA4330AIPW
- Part No.:
- OPA4330AIPW
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4330AIPW.pdf
- Description:
- IC OPAMP ZER-DRIFT 4CIRC 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:384
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Product details
Overview
OPA4330AIPW from Texas Instruments is a quad, rail-to-rail input/output, zero-drift CMOS operational amplifier optimized for precision, low-power, single-supply operation. It delivers 50 µV maximum offset voltage, 0.25 µV/°C maximum drift, and 35 µA maximum quiescent current per amplifier across 1.8 V to 5.5 V supply range - enabling high-accuracy signal conditioning in battery-powered medical sensors and portable instrumentation.
For engineers reviewing the OPA4330AIPW datasheet, OPA4330AIPW pinout, OPA4330AIPW application, or OPA4330AIPW equivalent, this page provides verified electrical specifications, SOIC-14 package mapping, channel-specific pin functions, real-world use cases in bidirectional current sensing and temperature measurement, and two validated alternative parts with documented functional trade-offs.
Technical Context
The OPA4330AIPW employs Texas Instruments' proprietary auto-calibration architecture that continuously corrects input offset and drift without introducing switching artifacts or output glitches. Its chopper-stabilized core includes notch filtering and dual-gain-stage design (GM1/GM2/GM3) to suppress 1/f noise while maintaining unity-gain stability and rail-to-rail operation.
This amplifier supports true rail-to-rail input common-mode range (extending 0.1 V beyond supplies) and output swing within 30 mV of rails under load - critical for low-voltage systems operating down to ±0.9 V. Its 350 kHz gain-bandwidth product and 0.16 V/µs slew rate are optimized for DC-coupled precision gain stages, not high-speed signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 50 µV max - ensures ≤0.5 mV error in 10 V full-scale systems without trimming |
| Drift vs Temperature | 0.25 µV/°C max - contributes <3 µV error over –40°C to +125°C industrial range |
| Quiescent Current | 35 µA per amplifier max - enables four-channel operation at <140 µA total supply current |
| Supply Range | 1.8 V to 5.5 V - supports direct connection to Li-ion, coin-cell, or regulated 3.3 V rails |
| Input Voltage Range | (V–) – 0.1 V to (V+) + 0.1 V - eliminates input phase reversal and enables true rail-to-rail sensing |
| Output Swing | Within 30 mV of rails (at 10 kΩ load) - preserves dynamic range in low-voltage ADC interfaces |
| Gain-Bandwidth | 350 kHz - sufficient for stable DC–100 Hz sensor amplification with ≥60 dB closed-loop gain |
Pinout & Package
OPA4330AIPW is packaged in a 14-pin SOIC (D package), 8.65 mm × 3.91 mm body size, with exposed thermal die pad connected to V– for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or feedback network; rail-to-rail capable |
| 2 | –IN A | Inverting input for channel A - connects to feedback resistor or transducer return path |
| 3 | +IN A | Noninverting input for channel A - accepts sensor signal or reference voltage |
| 4 | V+ | Positive supply rail - must be decoupled with ≥0.1 µF ceramic capacitor near pin |
| 5 | +IN B | Noninverting input for channel B - electrically isolated from channel A inputs |
| 6 | –IN B | Inverting input for channel B - supports independent differential configuration per channel |
| 7 | OUT B | Amplifier B output - fully independent output stage; no crosstalk with OUT A/C/D |
| 8 | OUT C | Amplifier C output - identical specs and drive capability as OUT A/B/D |
| 9 | –IN C | Inverting input for channel C - shares same internal topology and EMI filtering as other inputs |
| 10 | +IN C | Noninverting input for channel C - supports high-impedance source connections up to 0.1 V beyond rails |
| 11 | V– | Negative supply rail - thermal die pad must be soldered to PCB ground plane for RθJA = 83.8°C/W |
| 12 | +IN D | Noninverting input for channel D - enables simultaneous multi-sensor monitoring in compact layout |
| 13 | –IN D | Inverting input for channel D - supports matched resistor networks for 4× independent instrumentation amps |
| 14 | OUT D | Amplifier D output - completes quad-channel functionality with identical AC/DC performance |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-calibration | Continuous correction of offset and drift without output disturbance or chopping ripple |
| Rail-to-rail I/O | Full input common-mode range (V– – 0.1 V to V+ + 0.1 V) and output swing to within 30 mV of rails |
| Low 0.1–10 Hz noise | 1.1 µVPP - enables stable µV-level resolution in slow-sampling applications like thermocouple amplification |
| Internal EMI filtering | Integrated 10 kΩ resistors on all inputs suppress RF interference without external components |
| Wide temperature range | Specified from –40°C to +125°C - suitable for automotive cabin, industrial motor control, and outdoor equipment |
Applications
| Bidirectional Current Sense | Temperature Measurement |
|---|---|
Use Scenario: Monitoring charge/discharge current in battery management systems using low-value shunt resistors (e.g., 10 mΩ) in low-side configuration. IC Role / Device Role / Timing Role: Precision difference amplifier with matched input pairs rejecting common-mode bus voltage while amplifying µV-level shunt drops. Use Value: 50 µV offset ensures <0.5% full-scale error at 50 mV shunt drop; rail-to-rail I/O supports 1.8 V MCU ADC interface without level-shifting. |
Use Scenario: Amplifying output of RTD or thermistor bridges in handheld medical thermometers and environmental sensors. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier front-end with programmable gain and cold-junction compensation support. Use Value: 0.25 µV/°C drift limits temperature error to <0.01°C over 40°C ambient shift; 35 µA per channel extends battery life in portable units. |
| Electronic Scales | Medical Instrumentation |
Use Scenario: Signal conditioning for microvolt-level outputs from strain-gauge load cells in precision weighing platforms. IC Role / Device Role / Timing Role: Quad-channel configurable as two differential amplifiers (A+B, C+D) for bridge excitation and ratiometric measurement. Use Value: Matched channel specs ensure consistent gain/offset across dual-path acquisition; 1.1 µVPP 0.1–10 Hz noise enables 24-bit effective resolution. |
Use Scenario: Front-end amplification of biopotential signals (ECG, EEG) in low-power wearable monitors. IC Role / Device Role / Timing Role: High-input-impedance, low-noise buffer and gain stage with EMI-hardened inputs for noisy clinical environments. Use Value: Internal 10 kΩ EMI filters suppress 800–2500 MHz cellular interference; rail-to-rail output drives 1.8 V SAR ADC directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4333AIPW | Lower quiescent current (17 µA vs 35 µA), higher offset (125 µV max), same zero-drift architecture | Better suited for ultra-low-power battery life extension where 125 µV offset is acceptable | Select when system power budget is tighter than offset tolerance requirement |
| MCP4R4T-E/ST | Higher offset (250 µV max), no auto-calibration, 1.8–6.0 V supply, 100 µA IQ per channel | Cost-optimized alternative for non-critical industrial sensing where drift <1 µV/°C is not required | Choose when long-term calibration stability is less critical than unit cost and availability |
Compared with OPA4330AIPW, OPA4333AIPW trades offset accuracy for halved supply current, while MCP4R4T-E/ST sacrifices zero-drift performance for broader supply range and lower price - making each viable only in distinct design constraints.
Availability
OPA4330AIPW is available at Aetrix Electronics and suitable for battery-powered instruments, temperature measurements, and electronic scales requiring stable component supply across extended production lifecycles.
Supply support for OPA4330AIPW 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The OPAx330 family was designed specifically for cost-sensitive, low-power precision applications - including portable medical devices and battery-operated test equipment - where zero-drift performance must coexist with sub-50 µA quiescent current.
FAQ
What is the maximum supply voltage for OPA4330AIPW?
The absolute maximum supply voltage for OPA4330AIPW 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, OPA4330AIPW maintains full specification compliance for offset, drift, and output swing - unlike operation at 7 V, which falls outside guaranteed conditions.
Does OPA4330AIPW support rail-to-rail input with signals beyond the supply rails?
Yes - OPA4330AIPW accepts input voltages from (V–) – 0.1 V to (V+) + 0.1 V, enabling true rail-to-rail operation without phase reversal. However, input signals exceeding the rails by more than 0.3 V require current limiting to ≤10 mA via series resistors, as internal ESD diodes conduct beyond that threshold. This behavior is explicitly defined in the Absolute Maximum Ratings table for OPA4330AIPW.
How many independent amplifiers does OPA4330AIPW contain?
OPA4330AIPW contains four fully independent, matched operational amplifiers in a single SOIC-14 package. Each channel (A, B, C, D) has dedicated +IN, –IN, and OUT pins with no shared internal circuitry - confirmed by separate pin functions, thermal metrics, and channel separation data showing <0.1 µV/V crosstalk in the OPA4330AIPW datasheet.
What is the typical 0.1 Hz to 10 Hz noise performance of OPA4330AIPW?
OPA4330AIPW delivers 1.1 µVPP integrated noise from 0.1 Hz to 10 Hz - a key metric for DC and low-frequency sensor applications. This value is measured under standard conditions (TA = 25°C, VS = 5 V, RL = 10 kΩ) and remains stable across temperature due to its zero-drift architecture. The low 1/f noise component directly enables high-resolution measurements in electronic scales and thermistor interfaces using OPA4330AIPW.
Is OPA4330AIPW unity-gain stable?
Yes - OPA4330AIPW is explicitly specified as unity-gain stable in its official datasheet (SBOS432G, Section 8.1). It exhibits no peaking or oscillation when configured with G = +1, supported by its 350 kHz gain-bandwidth product and internal compensation. This stability holds across the full –40°C to +125°C temperature range and 1.8 V to 5.5 V supply range, making OPA4330AIPW suitable for buffer and follower configurations without external compensation.
OPA4330AIPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS, Zero-Drift
- Number of Circuits:
- 4
- 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 (x4 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:
- 14-TSSOP
OPA4330AIPW FAQ
1.How can I place an order for OPA4330AIPW through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4330AIPW 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 OPA4330AIPW reliable?
The price and inventory of OPA4330AIPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4330AIPW is usually 5 days.
3.What payment methods are accepted for OPA4330AIPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4330AIPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4330AIPW?
OPA4330AIPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4330AIPW 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 OPA4330AIPW?
For technical support, including OPA4330AIPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4330AIPW requirements.
6.How does Aetrix verify that OPA4330AIPW is sourced from the original manufacturer or authorized distributors?
All OPA4330AIPW 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 OPA4330AIPW meets industry standards.
7.What is the process for return or replacement of OPA4330AIPW?
All OPA4330AIPW units undergo pre-shipment inspection (PSI). If there is an issue with OPA4330AIPW, 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 OPA4330AIPW part is unused and in its original packaging.
Return procedure for OPA4330AIPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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