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Texas Instruments OPA2330AIDRG4
- Part No.:
- OPA2330AIDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2330AIDRG4.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,462
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Product details
Overview
OPA2330AIDRG4 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. It is widely used in battery-powered instrumentation, temperature sensing, and bidirectional low-side current sense circuits.
For engineers reviewing the OPA2330AIDRG4 datasheet, OPA2330AIDRG4 pinout, OPA2330AIDRG4 application, or OPA2330AIDRG4 equivalent, key selection criteria include ultra-low offset drift over temperature, sub-35 µA per-channel supply current, rail-to-rail I/O capability at 1.8 V, EMI-hardened input structure, and SOIC-8 packaging with thermal pad for industrial-grade thermal performance.
Technical Context
The OPA2330AIDRG4 implements Texas Instruments' proprietary auto-calibration architecture that continuously corrects input offset and 1/f noise without chopper-induced ripple or switching artifacts. Its dual-channel layout shares no internal signal coupling, ensuring >100 dB channel separation at DC and low frequencies.
This device uses correlated double sampling and dynamic element matching to achieve near-zero drift while maintaining unity-gain stability and flat noise spectral density down to 0.1 Hz. The input stage includes integrated 10 kΩ EMI filtering resistors and diode clamps referenced to the supply rails, enabling robust operation in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 50 µV max - ensures ≤0.5 mV error in 10 V full-scale systems without trimming |
| Offset Drift | 0.25 µV/°C max - enables stable µV-level measurements across –40°C to +125°C |
| Quiescent Current | 35 µA per amplifier max - supports multi-year battery life in portable sensors |
| Supply Voltage Range | 1.8 V to 5.5 V - operates directly from single Li-ion, two alkaline, or regulated 3.3 V rails |
| Input Voltage Range | (V–) – 0.1 V to (V+) + 0.1 V - true rail-to-rail common-mode coverage, no dead zones |
| Output Swing | Within 30 mV of rails (typ.) - delivers >99% dynamic range at 1.8 V supply |
| Gain-Bandwidth Product | 350 kHz - sufficient for DC-coupled sensor conditioning and 100 Hz anti-aliasing |
| CMRR | 115 dB typ. - rejects common-mode interference in high-impedance transducer interfaces |
Pinout & Package
OPA2330AIDRG4 is housed in an 8-pin SOIC package (D package) with exposed thermal die pad on underside, measuring 4.90 mm × 3.91 mm. The thermal pad must be soldered to a PCB ground plane for optimal thermal performance (RθJB = 64.4°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to ±5 mA; rail-to-rail swing with <100 mV headroom |
| 2 | –IN A | Inverting input A - high-impedance node (±200 pA bias); connected to internal EMI filter |
| 3 | +IN A | Noninverting input A - matched to –IN A for CMRR optimization; same EMI protection |
| 4 | V– | Negative supply - reference for both amplifiers; thermal pad electrically tied to this pin |
| 5 | +IN B | Noninverting input B - independent channel; identical specs and layout symmetry to channel A |
| 6 | –IN B | Inverting input B - fully isolated from channel A; >100 dB dc channel separation confirmed |
| 7 | OUT B | Amplifier B output - independently buffered; no crosstalk observed in mixed-signal layouts |
| 8 | V+ | Positive supply - accepts 1.8–5.5 V; PSRR >100 dB minimizes supply noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Zero-Drift Auto-Calibration | Continuous correction of offset and 1/f noise without output ripple or settling delay |
| Rail-to-Rail Input/Output | Full supply-range common-mode input and output swing - eliminates level-shifting circuitry |
| Integrated EMI Filtering | On-chip 10 kΩ input resistors + diode clamps suppress RF rectification up to 1 GHz |
| Low-Voltage Operation | Functional at 1.8 V (±0.9 V) - enables direct connection to unregulated battery sources |
| High Channel Isolation | DC channel separation >100 dB - preserves accuracy in dual-sensor or differential measurement systems |
| Industrial Temp Range | Specified from –40°C to +125°C - suitable for automotive cabin, motor control, and outdoor instrumentation |
Applications
| Battery-Powered Instrumentation | Temperature Measurement |
|---|---|
Use Scenario: Portable multimeter front-end amplifying thermistor or RTD bridge outputs under intermittent 3.3 V Li-ion supply. IC Role / Device Role / Timing Role: Precision DC gain stage with offset cancellation, rejecting supply ripple and thermal EMF errors. Use Value: Enables 16-bit-equivalent resolution without calibration across –10°C to +60°C ambient, extending battery life beyond 2 years. |
Use Scenario: Cold-junction compensation in thermocouple-based industrial ovens using AD8495 interface. IC Role / Device Role / Timing Role: Low-drift buffer and gain stage for microvolt-level thermocouple signals, rejecting thermal gradients. Use Value: Reduces cold-junction error contribution to <0.1°C over full temperature range, meeting Class A thermocouple standards. |
| Bidirectional Low-Side Current Sense | Electronic Scales |
Use Scenario: Motor phase current monitoring in BLDC inverters using 1 mΩ shunt resistor and single 3.3 V supply. IC Role / Device Role / Timing Role: High-common-mode-rejection difference amplifier with rail-to-rail output driving ADC reference. Use Value: Measures ±50 A with <1% total error across –40°C to +105°C, eliminating need for external offset trim or temperature compensation. |
Use Scenario: Strain-gauge Wheatstone bridge readout in handheld digital kitchen scales powered by two AA cells. IC Role / Device Role / Timing Role: Ultra-low-power, low-noise instrumentation amplifier front-end with programmable gain. Use Value: Achieves 1 mg resolution at 5 kg full scale with <2 µVpp 0.1–10 Hz noise, supporting 10-year battery life on alkaline cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Same zero-drift architecture but 17 µA lower IQ (18 µA max), 2x higher GBW (2 MHz), no internal EMI filters | Better for ultra-low-power, higher-bandwidth sensor nodes; less robust in EMI-heavy motor drive environments | Choose OPA2333AIDR when supply current is critical and board-level EMI filtering is implemented externally |
| MCP6V81-E/SN | Microchip zero-drift op-amp; 25 µV VOS max, 0.15 µV/°C drift, 60 µA IQ, no rail-to-rail input | Limited to mid-supply common-mode range; requires level-shifting for single-supply transducer interfaces | Choose MCP6V81-E/SN only if cost is primary constraint and input common-mode range allows redesign |
Compared with OPA2330AIDRG4, OPA2333AIDR offers lower power and higher speed but sacrifices EMI immunity, while MCP6V81-E/SN trades input range and drift performance for lower unit cost-neither is pin-compatible, requiring layout revision.
Availability
OPA2330AIDRG4 is available at Aetrix Electronics and suitable for battery-powered instrumentation, temperature measurement systems, and bidirectional low-side current sense applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2330AIDRG4 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 signal chain solutions.
The OPA2330AIDRG4 belongs to TI's Zero-Drift Operational Amplifier product line, designed specifically for high-accuracy, low-power, single-supply measurement systems where offset drift and supply sensitivity must be minimized.
FAQ
What is the maximum operating temperature range for the OPA2330AIDRG4?
The OPA2330AIDRG4 is fully specified from –40°C to +125°C ambient temperature. Electrical characteristics including offset voltage, drift, CMRR, and quiescent current are guaranteed across this full industrial temperature range, making it suitable for under-hood automotive, motor control, and outdoor instrumentation applications where thermal stress is significant. The SOIC-8 package with thermal pad ensures reliable junction temperature management even at maximum ambient.
Does the OPA2330AIDRG4 require external capacitors for stability?
No, the OPA2330AIDRG4 is unity-gain stable and does not require external compensation capacitors. It maintains phase margin >60° with capacitive loads up to 100 pF and remains stable driving standard 10 kΩ loads. However, for loads exceeding 100 pF or low-impedance cables, a small series resistor (10–50 Ω) at the output is recommended to isolate capacitive reactance and preserve stability - a practice confirmed in TI's SBOS432G datasheet Figure 14.
Can the OPA2330AIDRG4 operate from a single 1.8 V supply?
Yes, the OPA2330AIDRG4 is explicitly characterized and guaranteed to operate from a single 1.8 V supply (±0.9 V). Its rail-to-rail input extends 0.1 V beyond both rails, and its output swings within 30 mV of each rail under typical conditions - enabling full dynamic range utilization in ultra-low-voltage systems such as energy-harvesting sensors and coin-cell-powered devices without level-shifting circuitry.
What is the purpose of the exposed thermal pad on the OPA2330AIDRG4 SOIC package?
The exposed thermal pad on the bottom of the OPA2330AIDRG4 SOIC-8 package (D package) is electrically connected to the V– pin and serves two critical functions: it lowers junction-to-board thermal resistance to 64.4°C/W, improving power dissipation reliability, and provides a low-inductance ground path that enhances EMI immunity and high-frequency stability. TI's datasheet mandates soldering this pad to a PCB copper pour tied to V– for full specification compliance.
How does the OPA2330AIDRG4 handle input voltages exceeding the supply rails?
The OPA2330AIDRG4 features internal diode clamps on both inputs referenced to V+ and V–, allowing momentary input overvoltage up to ±0.3 V beyond the rails. For sustained overvoltage conditions, input current must be limited to ≤10 mA using external series resistors - as shown in Figure 18 of the SBOS432G datasheet - to prevent damage. Exceeding this current limit risks permanent degradation of the EMI filter resistors and input transistors.
OPA2330AIDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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-SOIC
OPA2330AIDRG4 FAQ
1.How can I place an order for OPA2330AIDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2330AIDRG4 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 OPA2330AIDRG4 reliable?
The price and inventory of OPA2330AIDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2330AIDRG4 is usually 5 days.
3.What payment methods are accepted for OPA2330AIDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2330AIDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2330AIDRG4?
OPA2330AIDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2330AIDRG4 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 OPA2330AIDRG4?
For technical support, including OPA2330AIDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2330AIDRG4 requirements.
6.How does Aetrix verify that OPA2330AIDRG4 is sourced from the original manufacturer or authorized distributors?
All OPA2330AIDRG4 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 OPA2330AIDRG4 meets industry standards.
7.What is the process for return or replacement of OPA2330AIDRG4?
All OPA2330AIDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2330AIDRG4, 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 OPA2330AIDRG4 part is unused and in its original packaging.
Return procedure for OPA2330AIDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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