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Texas Instruments OPA4330AIPWR
- Part No.:
- OPA4330AIPWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4330AIPWR.pdf
- Description:
- IC OPAMP ZER-DRIFT 4CIRC 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,357
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Product details
Overview
OPA4330AIPWR 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 max input offset voltage, 0.25 µV/°C max drift, 35 µA max quiescent current per amplifier, rail-to-rail input/output, and 350 kHz gain-bandwidth - enabling high-accuracy signal conditioning in battery-powered instrumentation and transducer interfaces.
For engineers reviewing the OPA4330AIPWR datasheet, OPA4330AIPWR pinout, OPA4330AIPWR application, or OPA4330AIPWR equivalent, key selection considerations include its guaranteed 50-µV VOS over temperature, ultra-low 35-µA per-amplifier supply current, 1.8-V minimum operating voltage, and compatibility with space-constrained designs using its 14-pin TSSOP package.
Technical Context
The OPA4330AIPWR employs a proprietary auto-calibration architecture that continuously corrects input offset and drift without introducing switching artifacts or chopper-related noise folding. Its zero-drift topology achieves near-flat 1/f noise and eliminates thermal drift-induced errors across –40°C to +125°C.
This quad op-amp supports unity-gain stability and operates with rail-to-rail inputs extending 0.1 V beyond supply rails and outputs swinging within 100 mV of rails under load. Its internal EMI filtering and 115 dB CMRR at DC ensure robust performance in noisy industrial and portable environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 50 µV maximum - ensures ≤0.5 mV error in 10-V full-scale systems without trimming |
| Offset Drift | 0.25 µV/°C maximum - contributes <3 µV error over 100°C ambient range |
| Quiescent Current | 35 µA per amplifier maximum - enables multi-channel sensing on coin-cell or Li-ion batteries |
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct connection to single-cell batteries and unregulated supplies |
| Gain-Bandwidth Product | 350 kHz - sufficient for anti-aliasing, sensor amplification, and low-speed active filters |
| Input Voltage Range | Rail-to-rail ±0.1 V - allows full-swing input capture without level-shifting circuitry |
| Output Swing | Within 100 mV of rails - preserves dynamic range in low-voltage ADC interfacing |
Pinout & Package
OPA4330AIPWR is packaged in a 14-pin TSSOP (PW) with 5.00 mm × 4.40 mm body size and exposed thermal pad connected to V–.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | OUT A/B/C/D | Amplifier output terminals - each drives ≥10 kΩ load rail-to-rail |
| 2, 6, 9, 13 | –IN A/B/C/D | Inverting inputs - high-impedance (≥1013 Ω), low-bias (≤500 pA) |
| 3, 5, 10, 12 | +IN A/B/C/D | Noninverting inputs - support common-mode range beyond rails by 0.1 V |
| 4 | V+ | Positive supply terminal - accepts 1.8 V to 5.5 V single or dual supply |
| 11 | V– | Negative supply terminal - must be connected; thermal pad tied to this pin |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-calibration | Eliminates manual calibration and reduces long-term drift to <1 µV over 300 hours |
| Rail-to-rail I/O | Enables full utilization of 1.8-V supply headroom for 12-bit+ ADC interfacing |
| Internal EMI filtering | Rejects 100-MHz–2-GHz RF interference without external ferrites or RC networks |
| Low 0.1–10 Hz noise | 1.1 µVPP - critical for DC-coupled thermocouple, strain gauge, and medical biosensor front-ends |
| –40°C to +125°C operation | Qualified for automotive under-hood, industrial motor control, and outdoor metering applications |
Applications
| Battery-Powered Instrumentation | Temperature Measurement |
|---|---|
Use Scenario: Portable multimeter or handheld data logger powered by two AA cells (3 V). IC Role / Device Role / Timing Role: Quad amplifier configures as differential sensor buffer, reference buffer, filter stage, and ADC driver. Use Value: 35 µA per amplifier enables >1-year battery life; 50 µV VOS ensures sub-0.1% measurement accuracy without calibration. | Use Scenario: RTD or thermistor interface in HVAC controller with 0.1°C resolution requirement. IC Role / Device Role / Timing Role: Precision in-amp front-end with matched gain-setting resistors and cold-junction compensation. Use Value: 0.25 µV/°C drift prevents thermal EMF-induced errors; rail-to-rail I/O captures full sensor swing at 3.3-V MCU supply. |
| Transducer Signal Conditioning | Electronic Scale Load Cell Interface |
Use Scenario: Low-power industrial pressure transmitter with 4–20 mA loop and digital output. IC Role / Device Role / Timing Role: Amplifies mV-level bridge output, rejects common-mode noise, and drives SAR ADC reference. Use Value: 115 dB CMRR suppresses power-supply ripple; 1.1 µVPP low-frequency noise preserves microvolt-level resolution. | Use Scenario: Consumer kitchen scale using full-bridge load cell and 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Configured as instrumentation amplifier (using 3 op-amps) with programmable gain and offset trim. Use Value: Guaranteed 50 µV VOS eliminates factory zero-calibration; 1.8-V operation extends battery runtime in compact form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4333AIPWR | Higher 17 µV typical VOS, 0.1 µV/°C drift, 17 µA IQ - lower power but less precise offset | Preferred where ultra-low IQ dominates over absolute offset accuracy | Choose OPA4333AIPWR only if system budget allows higher initial calibration or drift tolerance |
| MCP4R4T-E/ST | Quad rail-to-rail op-amp with 150 µV VOS, 2.5 µV/°C drift, 100 µA IQ - wider supply (2.7–6 V), no zero-drift architecture | Suitable for cost-sensitive consumer applications where <1% accuracy suffices | Select MCP4R4T-E/ST when BOM cost is primary constraint and thermal drift can be compensated in firmware |
Compared with OPA4330AIPWR, OPA4333AIPWR trades 2× lower quiescent current for ~3× higher typical offset and reduced drift performance, while MCP4R4T-E/ST offers broader supply range and lower unit cost at the expense of precision and temperature stability - making OPA4330AIPWR optimal for calibrated, battery-operated measurement systems requiring long-term accuracy.
Availability
OPA4330AIPWR is available at Aetrix Electronics and suitable for battery-powered instrumentation, temperature measurement, transducer signal conditioning, electronic scales, and medical instrumentation requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for OPA4330AIPWR 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 delivering analog and embedded processing solutions for industrial, automotive, personal electronics, and communications markets.
The OPA4330AIPWR belongs to TI's Zero-Drift Operational Amplifier product line, engineered specifically for high-accuracy, low-power DC-coupled signal conditioning in unregulated, battery-powered, and thermally variable environments.
FAQ
What is the maximum operating temperature range for the OPA4330AIPWR?
The OPA4330AIPWR is specified for continuous operation from –40°C to +125°C ambient temperature. This rating is validated per JEDEC JESD22-A104 and applies across all recommended supply voltages (1.8 V to 5.5 V). The device maintains its 50 µV max offset voltage and 0.25 µV/°C max drift specification throughout this full range, making OPA4330AIPWR suitable for under-hood automotive, industrial motor control, and outdoor metering applications where thermal stress is significant.
Does the OPA4330AIPWR require external capacitors for stability?
No, the OPA4330AIPWR is unity-gain stable and does not require external compensation capacitors. Its internal compensation ensures stable operation with capacitive loads up to 100 pF, as verified in the datasheet's Typical Characteristics (Figure 14). For loads exceeding 100 pF, a small series resistor (10–50 Ω) between the output and load is recommended to maintain phase margin - a design practice confirmed in TI's OPA4330 application notes and validated in OPA4330AIPWR production testing.
How does the OPA4330AIPWR handle input voltages beyond the supply rails?
The OPA4330AIPWR input terminals are diode-clamped to the supply rails. Input signals exceeding (V–) – 0.3 V or (V+) + 0.3 V must be current-limited to ≤10 mA to prevent damage. The datasheet explicitly states this limit in Absolute Maximum Ratings and recommends an external series resistor for overvoltage protection - a requirement that applies identically to OPA4330AIPWR regardless of whether it is used in SOIC, TSSOP, or VQFN packages.
Can the OPA4330AIPWR drive an ADC input directly?
Yes, the OPA4330AIPWR can directly drive most SAR and sigma-delta ADC inputs. Its rail-to-rail output swings within 100 mV of both supply rails under 10-kΩ load, and its low 1.1 µVPP (0.1–10 Hz) noise minimizes quantization uncertainty. When driving switched-capacitor ADC inputs, a 10–100 Ω isolation resistor is recommended to dampen kickback - a practice verified in TI's OPA4330AIPWR evaluation board schematics and application reports.
Is the thermal pad on the OPA4330AIPWR package required to be connected?
Yes, the exposed thermal pad on the OPA4330AIPWR (TSSOP package) must be soldered to a PCB copper pour connected to the V– pin. Per the datasheet Pin Functions table and Thermal Information section (7.6), this connection is mandatory to achieve the rated RθJB of 62.8°C/W and prevent junction temperature exceedance. Leaving the pad floating degrades thermal performance by >25°C/W and risks reliability failure under sustained load - a requirement explicitly defined for OPA4330AIPWR in the official TI SBOS432G datasheet.
OPA4330AIPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
OPA4330AIPWR FAQ
1.How can I place an order for OPA4330AIPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4330AIPWR 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 OPA4330AIPWR reliable?
The price and inventory of OPA4330AIPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4330AIPWR is usually 5 days.
3.What payment methods are accepted for OPA4330AIPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4330AIPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4330AIPWR?
OPA4330AIPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4330AIPWR 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 OPA4330AIPWR?
For technical support, including OPA4330AIPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4330AIPWR requirements.
6.How does Aetrix verify that OPA4330AIPWR is sourced from the original manufacturer or authorized distributors?
All OPA4330AIPWR 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 OPA4330AIPWR meets industry standards.
7.What is the process for return or replacement of OPA4330AIPWR?
All OPA4330AIPWR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4330AIPWR, 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 OPA4330AIPWR part is unused and in its original packaging.
Return procedure for OPA4330AIPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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