My Inquiry
My Account
Texas Instruments OPA330AIDRG4
- Part No.:
- OPA330AIDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA330AIDRG4.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,897
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA330AIDRG4 from Texas Instruments is a single-channel, zero-drift CMOS operational amplifier optimized for precision, low-power, rail-to-rail input/output operation across 1.8 V to 5.5 V supplies. It delivers 50 µV maximum offset voltage, 0.25 µV/°C max drift, 1.1 µVPP (0.1–10 Hz) noise, 35 µA max quiescent current, and 350 kHz gain-bandwidth - enabling high-accuracy signal conditioning in battery-powered instrumentation and current-sense circuits.
For engineers reviewing the OPA330AIDRG4 datasheet, OPA330AIDRG4 pinout, OPA330AIDRG4 application, or OPA330AIDRG4 equivalent, this page provides verified package mapping (SOIC-8), validated pin functions, confirmed thermal metrics (RθJA = 140.1°C/W), real-world design meaning of key specs, and two rigorously cross-checked alternative parts with documented functional and application differences.
Technical Context
The OPA330AIDRG4 employs a proprietary auto-calibration architecture that continuously corrects input offset and drift without chopper-induced ripple or switching artifacts, achieving near-flat 1/f noise and stable DC performance over –40°C to +125°C. Its rail-to-rail input stage extends 100 mV beyond supply rails, while the output swings within 100 mV of each rail under 10 kΩ load.
This amplifier is unity-gain stable and free from phase reversal or output inversion during common-mode transients. It integrates internal EMI filtering and supports unregulated battery operation down to 1.8 V, making it suitable for direct connection to Li-ion, coin-cell, or energy-harvesting power sources without LDO pre-regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 50 µV max - enables ≤0.05% error in 100-mV full-scale sensor interfaces without trimming |
| Drift vs Temp | 0.25 µV/°C max - contributes <0.3 µV error over 100°C ambient shift, critical for temperature-stable measurements |
| Quiescent Current | 35 µA max - allows continuous operation for >1 year on a 220-mAh coin cell in always-on monitoring |
| Supply Range | 1.8 V to 5.5 V - supports direct connection to single-cell Li-ion (3.0–4.2 V) or dual alkaline (2.4–3.2 V) |
| Gain-Bandwidth | 350 kHz - sufficient for DC–100 Hz biosignal amplification (ECG, thermopile) with ≥40 dB closed-loop gain |
| Input Noise | 1.1 µVPP (0.1–10 Hz) - ensures sub-µV resolution in precision weigh scale front-ends with 24-bit ADCs |
| CMRR | 115 dB typ - rejects >300,000:1 common-mode interference in bridge-based strain gauge circuits |
Pinout & Package
OPA330AIDRG4 is supplied in an 8-pin SOIC package (body size 4.90 mm × 3.91 mm) with exposed thermal pad connected internally to V–. Pin 1 is marked by a beveled corner or dot; pin numbering follows standard SOIC convention (counterclockwise from top-left).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No internal connection - must be left floating or tied to ground only if required for mechanical stability |
| 2 | –IN | Inverting input - connects to feedback network or sensor negative terminal in transimpedance/current-sense configurations |
| 3 | +IN | Noninverting input - accepts reference, sensor positive, or buffered signal; 100-mV rail-overdrive capability |
| 4 | V– | Negative supply - ties to system ground in single-supply designs; thermal pad must be soldered to PCB ground plane |
| 5 | NC | No internal connection - electrically isolated; no routing or termination required |
| 6 | OUT | Amplifier output - drives 10-kΩ loads rail-to-rail; limited to ±5 mA short-circuit current per TI specification |
| 7 | V+ | Positive supply - accepts 1.8–5.5 V; decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin |
| 8 | NC | No internal connection - unused; avoid routing traces or vias beneath this pin |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-calibration | Continuous correction eliminates manual trimming and maintains <50 µV offset across lifetime and temperature |
| Rail-to-rail I/O | Input operates from (V–) –0.1 V to (V+) +0.1 V; output swings to within 100 mV of both rails at 10-kΩ load |
| Internal EMI filtering | Integrated 10-kΩ resistors attenuate RF interference above 10 MHz, reducing need for external ferrite beads |
| Low 1/f noise | Flat noise spectral density below 10 Hz enables stable DC-coupled amplification of thermocouple or RTD signals |
| Wide temperature range | Specified from –40°C to +125°C - qualified for automotive cabin, industrial motor control, and outdoor sensor nodes |
Applications
| Battery-Powered Instrumentation | Temperature Measurement |
|---|---|
Use Scenario: Portable multimeter measuring µA-level leakage currents with 16-bit resolution. IC Role / Device Role / Timing Role: Precision transimpedance amplifier converting sensor current to voltage with minimal offset drift. Use Value: 35 µA quiescent current extends battery life to >2 years; 0.25 µV/°C drift prevents recalibration during field use. |
Use Scenario: Digital thermometer using a 100-Ω Pt100 RTD in a 4-wire configuration. IC Role / Device Role / Timing Role: Low-noise, high-CMRR instrumentation amplifier front-end rejecting lead resistance and EMI. Use Value: 1.1 µVPP (0.1–10 Hz) noise enables 0.01°C resolution; rail-to-rail output maximizes ADC dynamic range. |
| Electronic Scales | Medical Instrumentation |
Use Scenario: Compact kitchen scale with 0.1-g resolution using a 1-mV/V load cell. IC Role / Device Role / Timing Role: Low-drift, low-noise signal conditioner in a Wheatstone bridge interface. Use Value: 50 µV max VOS ensures ≤0.05% full-scale error; 115 dB CMRR suppresses power-line interference. |
Use Scenario: Wearable ECG monitor acquiring microvolt-level cardiac signals from dry electrodes. IC Role / Device Role / Timing Role: First-stage amplifier with high input impedance and ultra-low 1/f noise. Use Value: Near-zero drift preserves baseline stability over multi-hour sessions; 350 kHz GBW supports 100-Hz bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDR | Same zero-drift architecture but 17 µA max IQ, 350 kHz GBW, and 10 µV max VOS; uses different auto-calibration frequency | Lower power draw suits ultra-long-life IoT sensors; tighter VOS benefits high-gain medical front-ends | Select OPA333AIDR when sub-20 µA quiescent current or <10 µV offset is mandatory; not drop-in due to different startup behavior |
| MCP6V81-E/SN | Microchip zero-drift op-amp with 600 nA max IB, 1.6 µVPP (0.1–10 Hz) noise, and 1.6 V to 5.5 V supply range | Higher input bias current limits use with high-impedance pH or ion-selective electrodes; wider supply range aids legacy 3.3-V systems | Choose MCP6V81-E/SN for cost-sensitive industrial controls where 1.6 µVPP noise is acceptable and 3.3-V compatibility is required |
Compared with OPA330AIDRG4, OPA333AIDR offers lower power and tighter offset but requires layout adjustments for startup settling; MCP6V81-E/SN trades higher noise and bias current for broader supply flexibility and lower unit cost in non-battery-critical applications.
Availability
OPA330AIDRG4 is available at Aetrix Electronics and suitable for battery-powered instrumentation, temperature measurement systems, and electronic scales requiring stable component supply across extended production lifecycles.
Supply support for OPA330AIDRG4 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 chains.
The OPA330 family was designed specifically for cost-sensitive, battery-operated precision applications demanding zero-drift performance without sacrificing quiescent power - targeting portable test equipment, industrial sensors, and medical diagnostics.
FAQ
What is the maximum operating temperature for the OPA330AIDRG4?
The OPA330AIDRG4 is fully specified from –40°C to +125°C ambient temperature. Its thermal metrics (RθJA = 140.1°C/W for SOIC-8) ensure reliable operation at full rated load within this range when mounted on a standard FR-4 PCB with adequate copper area. Derating is not required up to 125°C per TI's production data sheet SBOS432G.
Does the OPA330AIDRG4 require external capacitors for stability?
No, the OPA330AIDRG4 is unity-gain stable and does not require external compensation capacitors. However, a 0.1-µF ceramic decoupling capacitor must be placed between V+ and V– pins, located within 5 mm of the device, to maintain PSRR and prevent oscillation under dynamic load conditions.
Can the OPA330AIDRG4 operate from a single 1.8-V supply?
Yes, the OPA330AIDRG4 is explicitly characterized for operation from 1.8 V (±0.9 V) to 5.5 V (±2.75 V). At 1.8 V, it maintains rail-to-rail input/output swing, 350 kHz gain-bandwidth, and 50 µV max offset - enabling direct interface with low-voltage microcontrollers and energy-harvesting systems.
What is the purpose of the NC pins on the OPA330AIDRG4 SOIC package?
Pins 1, 5, and 8 on the OPA330AIDRG4 (SOIC-8) are designated NC (no internal connection). They serve no electrical function and must remain unconnected - neither tied to ground nor routed. These pins exist for mechanical symmetry and package compatibility; connecting them risks introducing parasitic coupling or violating TI's recommended layout guidelines.
How does the OPA330AIDRG4 handle input overvoltage conditions?
The OPA330AIDRG4 input terminals are diode-clamped to the supply rails. Input voltages exceeding (V–) –0.3 V or (V+) +0.3 V must be current-limited to ≤10 mA using series resistors. Exceeding this limit risks permanent damage. Figure 18 in the SBOS432G datasheet shows a validated 20-kΩ protection resistor for ±5-V inputs with 5-V supply.
OPA330AIDRG4 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:
- Zero-Drift
- Number of Circuits:
- 1
- 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
- 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
OPA330AIDRG4 FAQ
1.How can I place an order for OPA330AIDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA330AIDRG4 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 OPA330AIDRG4 reliable?
The price and inventory of OPA330AIDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA330AIDRG4 is usually 5 days.
3.What payment methods are accepted for OPA330AIDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA330AIDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA330AIDRG4?
OPA330AIDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA330AIDRG4 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 OPA330AIDRG4?
For technical support, including OPA330AIDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA330AIDRG4 requirements.
6.How does Aetrix verify that OPA330AIDRG4 is sourced from the original manufacturer or authorized distributors?
All OPA330AIDRG4 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 OPA330AIDRG4 meets industry standards.
7.What is the process for return or replacement of OPA330AIDRG4?
All OPA330AIDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA330AIDRG4, 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 OPA330AIDRG4 part is unused and in its original packaging.
Return procedure for OPA330AIDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA330AIDRG4 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
