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Texas Instruments OPA4330AIDR
- Part No.:
- OPA4330AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4330AIDR.pdf
- Description:
- IC OPAMP ZERO-DRIFT 4CIRC 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,810
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Product details
Overview
OPA4330AIDR from Texas Instruments is a quad-channel, zero-drift CMOS operational amplifier optimized for precision low-voltage operation (1.8 V to 5.5 V). 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 350 kHz gain-bandwidth product - enabling high-accuracy signal conditioning in battery-powered instrumentation and transducer interfaces.
For engineers reviewing the OPA4330AIDR datasheet, OPA4330AIDR pinout, OPA4330AIDR application, or OPA4330AIDR equivalent, key selection criteria include its guaranteed low offset drift over temperature, ultra-low power consumption at 1.8 V supply, EMI-hardened input structure, and compatibility with single-supply sensor front-ends requiring sub-100 µV DC accuracy.
Technical Context
The OPA4330AIDR employs Texas Instruments' proprietary auto-calibration architecture that continuously corrects input offset and drift without introducing switching artifacts or chopper-related ripple. Its dual-stage chopping design suppresses 1/f noise while maintaining flat noise spectral density down to 0.1 Hz.
This amplifier operates as a unity-gain stable, rail-to-rail I/O precision op amp with 100 mV input common-mode range beyond rails and 100 mV output swing from rails. It features internal EMI filtering and is specified across –40°C to +125°C for industrial and automotive-sensing applications.
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 Temp | 0.25 µV/°C max - limits offset shift to <3 µV over 85°C industrial range |
| Quiescent Current | 35 µA per amp - enables 4-channel operation below 140 µA total, ideal for coin-cell devices |
| Supply Range | 1.8 V to 5.5 V - supports direct Li-ion, 2×AA, or regulated 3.3 V/5 V rails |
| GBW | 350 kHz - sufficient for DC–100 Hz sensor amplification with ≥10× phase margin |
| CMRR | 115 dB typ - rejects >3000:1 common-mode interference in bridge sensor circuits |
| Input Bias Current | ±300 pA max - minimizes voltage error across high-Z sources like thermistors or pH electrodes |
| 0.1–10 Hz Noise | 1.1 µVPP - enables <1 µVpp resolution in precision weigh scale and medical analog front-ends |
Pinout & Package
OPA4330AIDR is packaged in a 14-pin SOIC (D package) with 8.65 mm × 3.91 mm body size and exposed thermal pad on underside connected to V–.
| 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 rails |
| 2 | –IN A | Inverting input A - differential pair node; accepts common-mode voltage 0.1 V beyond supplies |
| 3 | +IN A | Noninverting input A - matched to –IN A; low bias current enables high-impedance source interfacing |
| 4 | V+ | Positive supply - connects to highest potential rail (1.8–5.5 V); powers all four amplifiers |
| 5 | +IN B | Noninverting input B - electrically isolated channel; shares no internal nodes with Channel A |
| 6 | –IN B | Inverting input B - identical electrical specs to –IN A; supports independent feedback networks |
| 7 | OUT B | Amplifier B output - fully independent; no crosstalk with OUT A at DC or 10 kHz |
| 8 | OUT C | Amplifier C output - third channel; same AC/DC performance as OUT A and OUT B |
| 9 | –IN C | Inverting input C - part of dedicated input stage; not shared with other channels |
| 10 | +IN C | Noninverting input C - matched pair with –IN C; supports precision differential sensing |
| 11 | V– | Negative supply - connects to lowest potential rail (GND or negative rail); thermal pad must be tied here |
| 12 | +IN D | Noninverting input D - fourth channel input; enables simultaneous multi-sensor acquisition |
| 13 | –IN D | Inverting input D - independent input stage; supports separate gain configuration per channel |
| 14 | OUT D | Amplifier D output - final channel; maintains 115 dB CMRR and 350 kHz GBW under load |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-calibration | Eliminates manual trimming and reduces long-term calibration cycles in field-deployed equipment |
| Rail-to-rail I/O | Enables full utilization of 1.8 V supply headroom - critical for single-supply battery-powered designs |
| Internal EMI filtering | 10 kΩ series resistors + input clamping reduce susceptibility to 100 MHz–2 GHz RF interference |
| –40°C to +125°C operation | Validated performance across extended temperature range - suitable for under-hood automotive sensors |
| Low 1/f noise | Flat voltage noise floor down to 0.1 Hz enables stable DC-coupled measurements in electronic scales |
| Unity-gain stability | Guaranteed stable with no external compensation - simplifies layout and reduces BOM count |
Applications
| Temperature Measurement | Electronic Scales |
|---|---|
Use Scenario: Precision RTD or thermistor signal conditioning in handheld thermometers and HVAC controllers. IC Role / Device Role / Timing Role: Quad-channel OPA4330AIDR configures two amps as precision current sources for RTD excitation and two as low-drift difference amplifiers for ratiometric measurement. Use Value: 0.25 µV/°C drift ensures <0.1°C error contribution over 85°C ambient range without recalibration. | Use Scenario: Load-cell interface in portable weighing devices powered by two AA batteries. IC Role / Device Role / Timing Role: OPA4330AIDR provides rail-to-rail input/output gain stages and reference buffering for 24-bit sigma-delta ADC front-end. Use Value: 1.1 µVPP 0.1–10 Hz noise enables <10 µg resolution in 1 kg full-scale design at 1.8 V supply. |
| Medical Instrumentation | Battery-Powered Instruments |
Use Scenario: ECG electrode amplification and lead-off detection in portable patient monitors. IC Role / Device Role / Timing Role: One OPA4330AIDR channel buffers high-impedance biopotential signals; others condition reference voltages and implement active filters. Use Value: 35 µA per amplifier allows continuous 4-channel analog signal chain operation for >1 year on CR2032 coin cell. | Use Scenario: Multi-sensor data loggers (temperature, humidity, pressure) deployed in remote environmental monitoring. IC Role / Device Role / Timing Role: OPA4330AIDR conditions outputs from four independent sensors simultaneously before multiplexing into ADC. Use Value: Guaranteed 50 µV offset ensures consistent baseline across all channels - eliminating inter-channel calibration offsets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4333AIDR | Same zero-drift architecture but 17 µA IQ per amp; 350 kHz GBW; 10 µV max VOS | Lower power and tighter offset spec - preferred where battery life >2 years is required | Select OPA4333AIDR when lower quiescent current and tighter initial offset outweigh cost sensitivity |
| MCP4V04-E/ST | Quad rail-to-rail op amp with 150 µV max VOS, 1.5 µV/°C drift, 100 µA IQ per amp | Higher drift and current - suitable only for less demanding industrial controls | Choose MCP4V04-E/ST only if legacy design reuse or Microchip ecosystem integration is mandatory |
Compared with OPA4330AIDR, the OPA4333AIDR offers superior offset and power efficiency but at higher unit cost, while the MCP4V04-E/ST trades precision and power for broader availability and simpler qualification - making OPA4330AIDR the optimal balance of price, performance, and temperature stability for mid-tier instrumentation.
Availability
OPA4330AIDR is available at Aetrix Electronics and suitable for battery-powered instruments, temperature measurement systems, and electronic scales requiring stable component supply with full traceability and lifecycle management.
Supply support for OPA4330AIDR 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 OPA4330AIDR belongs to TI's Zero-Drift Operational Amplifier product line, engineered specifically for high-accuracy, low-power signal conditioning in unregulated battery-operated systems where long-term DC stability is critical.
FAQ
What is the maximum supply voltage for OPA4330AIDR?
The absolute maximum supply voltage for OPA4330AIDR is 7 V, but the recommended operating range is 1.8 V to 5.5 V. Operating above 5.5 V risks permanent damage and violates the device's qualified specifications. All published parameters - including offset voltage, drift, and quiescent current - are guaranteed only within the 1.8 V–5.5 V range. Exceeding this range may cause latch-up or accelerated parametric degradation in the OPA4330AIDR.
Does OPA4330AIDR support rail-to-rail input and output operation?
Yes, OPA4330AIDR supports true rail-to-rail input and output operation. Its input common-mode voltage range extends 0.1 V beyond both supply rails (V– – 0.1 V to V+ + 0.1 V), and its output swings to within 100 mV of each rail under 10 kΩ load. This capability is fully characterized and guaranteed across the –40°C to +125°C temperature range and 1.8 V–5.5 V supply range, making OPA4330AIDR suitable for single-supply sensor interfaces where full dynamic range utilization is essential.
What is the typical input bias current of OPA4330AIDR at 25°C?
The typical input bias current of OPA4330AIDR at 25°C is ±200 pA, with a maximum of ±300 pA across the full –40°C to +125°C temperature range. This ultra-low bias current is enabled by the CMOS input stage and proprietary auto-calibration architecture. It ensures minimal voltage error when interfacing with high-impedance sources such as thermistors, pH electrodes, or piezoresistive sensors - a key advantage confirmed in the OPA4330AIDR's Electrical Characteristics table.
Is OPA4330AIDR unity-gain stable?
Yes, OPA4330AIDR is unity-gain stable and requires no external compensation. Its internal compensation network guarantees phase margin >60° and monotonic step response at G = +1 with capacitive loads up to 100 pF. This stability is verified across all process corners, temperatures, and supply voltages in the OPA4330AIDR datasheet's Typical Characteristics section - enabling straightforward implementation in buffer, follower, and gain-of-one configurations without risk of oscillation.
What package options are available for OPA4330AIDR?
OPA4330AIDR is offered exclusively in the 14-pin SOIC (D package) with dimensions 8.65 mm × 3.91 mm and an exposed thermal die pad on the underside. This package is distinct from the TSSOP (PW) and VQFN (RGY) variants of the OPA4330 family - those carry different suffixes (e.g., OPA4330AIPWR, OPA4330AIRGYR). The "AIDR" suffix explicitly denotes the SOIC package, and all thermal, electrical, and reliability data in the OPA4330AIDR datasheet apply solely to this variant.
OPA4330AIDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-SOIC
OPA4330AIDR FAQ
1.How can I place an order for OPA4330AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4330AIDR 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 OPA4330AIDR reliable?
The price and inventory of OPA4330AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4330AIDR is usually 5 days.
3.What payment methods are accepted for OPA4330AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4330AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4330AIDR?
OPA4330AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4330AIDR 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 OPA4330AIDR?
For technical support, including OPA4330AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4330AIDR requirements.
6.How does Aetrix verify that OPA4330AIDR is sourced from the original manufacturer or authorized distributors?
All OPA4330AIDR 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 OPA4330AIDR meets industry standards.
7.What is the process for return or replacement of OPA4330AIDR?
All OPA4330AIDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4330AIDR, 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 OPA4330AIDR part is unused and in its original packaging.
Return procedure for OPA4330AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4330AIDR Tags
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