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Texas Instruments OPA2330AIDGKT
- Part No.:
- OPA2330AIDGKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2330AIDGKT.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2CIRC 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
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Product details
Overview
OPA2330AIDGKT 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 OPA2330AIDGKT datasheet, OPA2330AIDGKT pinout, OPA2330AIDGKT application, or OPA2330AIDGKT equivalent, this page provides verified technical context, package mapping, functional pin definitions, real-world use cases, and validated alternative options - all grounded in TI's SBOS432G production data sheet and official package documentation.
Technical Context
The OPA2330AIDGKT implements a proprietary auto-calibration architecture that continuously corrects input offset and 1/f noise without external components, enabling stable DC precision over –40°C to +125°C. Its dual-channel layout shares no internal signal coupling, supporting independent gain configurations per channel.
It features internal EMI filtering on both inputs, rail-to-rail input common-mode range extending 0.1 V beyond supply rails, and output swing within 30 mV of rails under load. The device is unity-gain stable and immune to phase reversal during overdrive conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 50 µV max - enables sub-100 µV system-level error budgets in sensor front-ends without trimming. |
| Offset Drift | 0.25 µV/°C max - ensures <1 µV total drift across –40°C to +125°C, critical for unregulated battery systems. |
| Quiescent Current | 35 µA per amplifier max - supports multi-year operation in coin-cell–powered devices (e.g., portable medical sensors). |
| Supply Voltage Range | 1.8 V to 5.5 V - compatible with Li-ion, Li-po, and 2×AA/AAA battery stacks without LDO regulation. |
| Gain-Bandwidth Product | 350 kHz - sufficient for DC-coupled transducer amplification and 50/60 Hz filter stages. |
| Input Voltage Noise | 1.1 µVPP (0.1–10 Hz) - low flicker noise preserves resolution in slow-sampling applications like weigh scales. |
| CMRR | 115 dB typ - rejects common-mode interference in noisy industrial environments (e.g., motor-driven equipment). |
Pinout & Package
The OPA2330AIDGKT is housed in an 8-pin VSSOP (DGK) package measuring 3.0 mm × 3.0 mm with exposed thermal pad on underside, rated for –40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives feedback network or next-stage input; rail-to-rail swing supports full-scale ADC interfacing. |
| 2 | –IN A | Inverting input for channel A - connects to feedback resistor or transducer return path in current-sense topologies. |
| 3 | +IN A | Noninverting input for channel A - accepts high-impedance sensor signals (e.g., thermistor divider, RTD bridge). |
| 4 | V– | Negative supply terminal - must be connected to ground or negative rail; thermal pad tied to this node for optimal dissipation. |
| 5 | +IN B | Noninverting input for channel B - electrically isolated from channel A; supports dual-sensor or differential pair configurations. |
| 6 | –IN B | Inverting input for channel B - used in independent gain stage or as reference input for comparator-like behavior. |
| 7 | OUT B | Amplifier B output - can buffer reference voltage or drive second analog path without crosstalk. |
| 8 | V+ | Positive supply terminal - accepts 1.8–5.5 V; internal EMI filters reduce susceptibility to switching noise from DC/DC converters. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-Drift Auto-Calibration | Continuous internal correction eliminates manual calibration and maintains accuracy over lifetime and temperature cycling. |
| Rail-to-Rail Input/Output | Input common-mode extends 0.1 V beyond supplies; output swings to within 30 mV of rails - maximizes dynamic range in low-voltage systems. |
| Internal EMI Filtering | Integrated 10-kΩ resistors on both inputs suppress RF interference from GSM, Wi-Fi, or motor drives without external RC networks. |
| Low 0.1–10 Hz Noise | 1.1 µVPP enables stable DC measurements in electronic scales and medical diagnostics where long integration times are used. |
| High PSRR (115 dB) | Maintains offset stability despite ±100 mV supply ripple - essential when operating directly from battery or unregulated SMPS outputs. |
Applications
| Battery-Powered Instrumentation | Temperature Measurement |
|---|---|
Use Scenario: Handheld multimeter or portable gas detector powered by two AA cells (2.4–3.2 V). IC Role / Device Role / Timing Role: Front-end amplifier for thermopile or electrochemical sensor, conditioning microvolt-level signals before 16-bit SAR ADC. Use Value: 35 µA quiescent current extends battery life to >2 years; 50 µV offset avoids zero-point calibration drift between field deployments. |
Use Scenario: Industrial oven controller using 100 Ω Pt100 RTD in 4-wire configuration. IC Role / Device Role / Timing Role: Precision current-source driver and differential amplifier in constant-current excitation loop. Use Value: 0.25 µV/°C drift ensures <0.1°C measurement uncertainty over full operating temperature range without software compensation. |
| Transducer Signal Conditioning | Bidirectional Low-Side Current Sense |
Use Scenario: Load cell interface in digital kitchen scale with 1 mV/V sensitivity and 200 g full scale. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier (gain = 100) with matched input bias current minimizing common-mode error. Use Value: 200 pA typical input bias current prevents offset shift due to PCB leakage; rail-to-rail output drives ADC reference directly. |
Use Scenario: Motor driver board monitoring bidirectional current through 10 mΩ shunt in H-bridge output stage. IC Role / Device Role / Timing Role: Dual-opamp configured as difference amplifier (channel A) and reference buffer (channel B) for ±5 A sensing. Use Value: Independent channels eliminate inter-channel crosstalk; 1.8 V minimum supply allows direct connection to MCU I/O domain without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDGKT | Lower offset (10 µV max), higher IQ (17 µA per amp), same VSSOP-8 package and pinout. | Better for ultra-low-offset requirements (e.g., high-resolution weigh scales); less suitable for ultra-low-power designs where <35 µA is mandatory. | Select OPA2333AIDGKT only if offset budget demands <20 µV and power budget permits ~2× higher quiescent current. |
| MCP6V82-E/SN | Higher offset (125 µV max), lower IQ (19 µA), SOIC-8 package, no internal EMI filter. | Cost-optimized for consumer-grade instruments; lacks EMI hardening needed in industrial motor-control environments. | Choose MCP6V82-E/SN only for non-noisy, cost-sensitive applications where 125 µV offset is acceptable and SOIC-8 footprint is preferred. |
Compared with OPA2330AIDGKT, OPA2333AIDGKT trades higher power for tighter DC accuracy, while MCP6V82-E/SN offers lower cost at the expense of EMI resilience and offset performance - making OPA2330AIDGKT the balanced choice for battery-powered industrial sensors requiring robustness, precision, and efficiency.
Availability
OPA2330AIDGKT is available at Aetrix Electronics and suitable for battery-powered instrumentation, temperature measurement systems, transducer signal conditioning, and bidirectional low-side current sense applications requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for OPA2330AIDGKT 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 OPA2330AIDGKT belongs to TI's Zero-Drift series, designed specifically for high-accuracy, low-power applications where long-term stability and battery longevity are critical - including portable medical devices, industrial sensors, and energy-harvesting systems.
FAQ
What is the maximum operating temperature for the OPA2330AIDGKT?
The OPA2330AIDGKT is specified for continuous operation from –40°C to +125°C ambient temperature, as confirmed in Section 7.3 (Recommended Operating Conditions) and Table 7.5 (Thermal Information) of TI's SBOS432G datasheet. Its VSSOP package achieves 180.3°C/W junction-to-ambient thermal resistance, enabling reliable function in sealed enclosures or near heat sources when properly mounted.
Does the OPA2330AIDGKT support rail-to-rail input and output simultaneously?
Yes, the OPA2330AIDGKT supports rail-to-rail input common-mode range extending 0.1 V beyond both supply rails and rail-to-rail output swing within 30 mV of the rails under load, as documented in Section 7.7 (Electrical Characteristics) of the SBOS432G datasheet. This enables full utilization of ADC input range in single-supply 1.8–5.5 V systems without level-shifting circuitry.
Is the OPA2330AIDGKT pin-compatible with other members of the OPAx330 family?
No - the OPA2330AIDGKT (VSSOP-8) has a different pinout than the SOIC-8 (D) and SON-8 (DRB) variants of the OPA2330, though all share identical electrical functionality. Pin mapping differs for V+ and V– placement relative to inputs/outputs; PCB layout must match the DGK package footprint and pin assignments shown in Section 6 of SBOS432G.
What is the typical input bias current of the OPA2330AIDGKT at 25°C?
The typical input bias current of the OPA2330AIDGKT is ±200 pA at 25°C, with a maximum of ±500 pA across –40°C to +125°C, per Section 7.7 (Electrical Characteristics) of SBOS432G. This ultra-low bias minimizes voltage errors in high-impedance sensor interfaces such as pH electrodes or photodiode transimpedance stages.
Can the OPA2330AIDGKT be used in single-supply 1.8 V applications?
Yes - the OPA2330AIDGKT is fully specified for operation down to 1.8 V (±0.9 V) supply, with all key parameters including offset voltage, drift, and output swing validated at this minimum voltage. Its rail-to-rail input/output and 35 µA quiescent current make it ideal for direct connection to lithium coin cells or unregulated 2×AA battery stacks.
OPA2330AIDGKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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-VSSOP
OPA2330AIDGKT FAQ
1.How can I place an order for OPA2330AIDGKT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2330AIDGKT 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 OPA2330AIDGKT reliable?
The price and inventory of OPA2330AIDGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2330AIDGKT is usually 5 days.
3.What payment methods are accepted for OPA2330AIDGKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2330AIDGKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2330AIDGKT?
OPA2330AIDGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2330AIDGKT 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 OPA2330AIDGKT?
For technical support, including OPA2330AIDGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2330AIDGKT requirements.
6.How does Aetrix verify that OPA2330AIDGKT is sourced from the original manufacturer or authorized distributors?
All OPA2330AIDGKT 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 OPA2330AIDGKT meets industry standards.
7.What is the process for return or replacement of OPA2330AIDGKT?
All OPA2330AIDGKT units undergo pre-shipment inspection (PSI). If there is an issue with OPA2330AIDGKT, 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 OPA2330AIDGKT part is unused and in its original packaging.
Return procedure for OPA2330AIDGKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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