My Inquiry
My Account
Texas Instruments OPA333AIDBVTG4
- Part No.:
- OPA333AIDBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA333AIDBVTG4.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,692
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA333AIDBVTG4 from Texas Instruments is a single, zero-drift, rail-to-rail input/output CMOS operational amplifier optimized for precision, low-power, single-supply operation. It delivers 10 μV maximum offset voltage, 0.05 μV/°C maximum drift, and 17 μA quiescent current across 1.8 V to 5.5 V supply, enabling high-accuracy signal conditioning in battery-powered instrumentation.
For engineers reviewing the OPA333AIDBVTG4 datasheet, OPA333AIDBVTG4 pinout, OPA333AIDBVTG4 application, or OPA333AIDBVTG4 equivalent, this page provides verified technical context, validated pin functions for the SOT-23-5 package, real-world application constraints, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The OPA333AIDBVTG4 uses a proprietary auto-calibration architecture that performs continuous zero-offset correction every 8 μs via an internal 350-kHz chopper-stabilized amplifier, eliminating 1/f noise and ensuring stable DC performance without output phase reversal. Its input stage supports common-mode voltage from (V−) − 0.1 V to (V+) + 0.1 V, and its output swings within 50 mV of both rails under 10 kΩ load.
This device operates as a unity-gain stable, single-channel precision op amp with 350 kHz gain-bandwidth product and 0.16 V/μs slew rate. It features ESD protection rated at ±4000 V HBM and ±1000 V CDM, and is fully specified from −40°C to +125°C - making it suitable for industrial sensor interfaces and medical front-ends where long-term drift and thermal stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 10 μV max - enables sub-0.01% error in 1-V full-scale transducer amplification without trimming. |
| Offset Drift | 0.05 μV/°C max - ensures <1 μV total drift over 85°C industrial temperature range. |
| Supply Range | 1.8 V to 5.5 V - supports direct connection to Li-ion, coin-cell, or 3.3-V logic rails without regulation. |
| Quiescent Current | 17 μA typical - allows >1-year battery life in 10-μA average-current handheld instruments. |
| Input Common-Mode Range | (V−) − 0.1 V to (V+) + 0.1 V - permits accurate sensing of signals below ground or above supply in single-supply systems. |
| Output Swing | Within 50 mV of rails @ 10 kΩ - delivers full dynamic range for 12-bit+ ADC drivers with minimal headroom loss. |
| 0.1–10 Hz Noise | 1.1 μVPP - preserves resolution in slow-sampling applications like thermocouple or strain gauge measurement. |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm body), surface-mount, lead-free, RoHS-compliant. Thermal resistance RθJA = 220.8°C/W; exposed pad not present in DBV variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive power supply | Highest potential rail; must be decoupled with 0.1-μF capacitor placed ≤2 mm from pin. |
| 2 - IN− | Inverting input | Differential node for feedback networks; input bias current ≤200 pA minimizes resistor-induced offset. |
| 3 - IN+ | Noninverting input | High-impedance sensor interface point; common-mode range extends 100 mV beyond rails. |
| 4 - V− | Negative power supply | Lowest potential rail; connects to ground or negative supply; reference for all internal biasing. |
| 5 - OUT | Amplifier output | Rail-to-rail capable; drives capacitive loads up to 100 pF while maintaining stability. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Auto-calibrates offset every 8 μs - eliminates thermal EMF errors and long-term aging drift in precision DC paths. |
| Rail-to-rail I/O | Input accepts signals 100 mV beyond supply rails; output swings to within 50 mV of both rails - maximizes usable signal range on 1.8-V supplies. |
| Ultra-low quiescent current | 17 μA per amplifier - enables always-on sensor monitoring in energy-harvesting and IoT edge nodes. |
| Chopper-noise cancellation | No 1/f flicker noise - ensures flat noise floor down to 0.01 Hz for high-resolution DC measurements. |
| Single-supply optimization | Specified from 1.8 V with full performance - eliminates need for charge pumps or dual supplies in portable medical devices. |
Applications
| Transducer Signal Conditioning | Medical Front-End Amplification |
|---|---|
Use Scenario: Amplifying low-level mV outputs from load cells, pressure sensors, or thermopiles in portable weighing scales or environmental monitors. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with sub-μV offset stability over temperature and time. Use Value: Enables 24-bit effective resolution without calibration; 0.05 μV/°C drift prevents recalibration every 5°C ambient shift. |
Use Scenario: Biopotential acquisition in ECG/EEG patches or glucose meter analog front-ends requiring ultra-low power and high CMRR. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier buffer with rail-to-rail input to capture near-ground bio-signals. Use Value: 1.8-V operation extends battery life; 130 dB CMRR rejects 50/60-Hz interference without external filtering. |
| Electronic Scale Load Cell Interface | Battery-Powered Test Equipment |
Use Scenario: Direct connection to Wheatstone bridge outputs in handheld digital calipers or food-grade scales operating from coin cells. IC Role / Device Role / Timing Role: Low-noise, zero-drift differential amplifier driving 20-bit sigma-delta ADCs. Use Value: 1.1 μVPP (0.1–10 Hz) noise ensures <1-μV RMS noise floor; 17 μA IQ enables multi-year shelf life. |
Use Scenario: Input buffer and reference driver in handheld multimeters or portable oscilloscope probes. IC Role / Device Role / Timing Role: High-impedance, low-drift buffer isolating DMM input from internal circuitry. Use Value: 10 μV max offset guarantees <0.001% basic accuracy; SC70/SOT-23 footprint saves PCB area in compact enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDCKR | Same silicon die, SC70-5 package (2.00 mm × 1.25 mm); RθJA = 298.4°C/W vs 220.8°C/W for DBV. | Higher thermal resistance limits continuous output current in high-ambient environments; identical electrical specs. | Select when board space is constrained and thermal load is light (<1 mA output). |
| MCP6V81T-E/OT | Microchip zero-drift op amp; 2 μV max offset, 0.015 μV/°C drift, but 55 μA IQ and only 1.8–5.5 V supply support. | Lower drift improves long-term stability, but higher IQ reduces battery life; same rail-to-rail I/O capability. | Select when ultimate drift performance is prioritized over power budget, and layout accommodates SOT-23-5 footprint. |
Compared with OPA333AIDBVTG4, OPA333AIDCKR offers identical precision in a smaller footprint but sacrifices thermal performance, while MCP6V81T-E/OT delivers lower drift at the cost of triple the quiescent current - making OPA333AIDBVTG4 optimal for balanced power/precision trade-offs in portable instrumentation.
Availability
OPA333AIDBVTG4 is available at Aetrix Electronics and suitable for electronic scales, medical instrumentation, battery-powered test equipment, and industrial sensor interfaces requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for OPA333AIDBVTG4 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 innovation in precision amplifiers and low-power signal chains.
The OPA333AIDBVTG4 belongs to TI's Zero-Drift Series, designed specifically for high-accuracy, low-power DC signal conditioning in space-constrained, battery-operated, and thermally variable environments.
FAQ
What is the maximum operating temperature range for the OPA333AIDBVTG4?
The OPA333AIDBVTG4 is fully specified from −40°C to +125°C ambient temperature, with absolute maximum junction temperature of 150°C. Its zero-drift architecture maintains 10 μV offset and 0.05 μV/°C drift across this full range, making it suitable for under-hood automotive sensors and industrial control modules where thermal stability is critical. Derating guidelines in the datasheet apply above 85°C ambient.
Does the OPA333AIDBVTG4 require external compensation for unity-gain stability?
No, the OPA333AIDBVTG4 is internally compensated and unity-gain stable across its entire operating range. It drives capacitive loads up to 100 pF without oscillation and maintains phase margin >60° at 1.8 V and 5.5 V supply. No external compensation components are needed for standard gain configurations, simplifying design in space-constrained layouts where the OPA333AIDBVTG4 is commonly deployed.
Can the OPA333AIDBVTG4 operate from a single 1.8-V supply?
Yes, the OPA333AIDBVTG4 is fully characterized and guaranteed to operate from 1.8 V to 5.5 V single supply (or ±0.9 V to ±2.75 V dual supply). At 1.8 V, it retains rail-to-rail input/output swing, 10 μV max offset, and 17 μA quiescent current - enabling direct integration into energy-harvesting systems and ultra-low-voltage IoT nodes where the OPA333AIDBVTG4 serves as the primary signal conditioner.
What is the purpose of the NC pins in the OPA333AIDBVTG4 pinout?
The OPA333AIDBVTG4 in SOT-23-5 (DBV) package has no NC pins - all five pins (V+, IN−, IN+, V−, OUT) are functional. The NC designation appears only in the 8-pin SOIC variant (D package), where pins 1, 5, and 8 have no internal connection. For OPA333AIDBVTG4 specifically, leaving any pin unconnected would disable operation; correct routing of all five pins is mandatory for proper function.
How does the auto-calibration architecture of the OPA333AIDBVTG4 affect system noise performance?
The OPA333AIDBVTG4's auto-calibration eliminates 1/f (flicker) noise, resulting in a flat voltage noise spectral density from 0.01 Hz upward. Its 0.1–10 Hz integrated noise is 1.1 μVPP, measured directly - a value confirmed in production testing and independent of operating temperature or time. This enables repeatable, low-drift DC measurements in applications like precision weight scales where the OPA333AIDBVTG4 is the signal-chain cornerstone.
OPA333AIDBVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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:
- 70 pA
- Voltage - Input Offset:
- 2 µV
- Current - Supply:
- 17µA
- 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:
- SOT-23-5
OPA333AIDBVTG4 FAQ
1.How can I place an order for OPA333AIDBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA333AIDBVTG4 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 OPA333AIDBVTG4 reliable?
The price and inventory of OPA333AIDBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA333AIDBVTG4 is usually 5 days.
3.What payment methods are accepted for OPA333AIDBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA333AIDBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA333AIDBVTG4?
OPA333AIDBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA333AIDBVTG4 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 OPA333AIDBVTG4?
For technical support, including OPA333AIDBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA333AIDBVTG4 requirements.
6.How does Aetrix verify that OPA333AIDBVTG4 is sourced from the original manufacturer or authorized distributors?
All OPA333AIDBVTG4 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 OPA333AIDBVTG4 meets industry standards.
7.What is the process for return or replacement of OPA333AIDBVTG4?
All OPA333AIDBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA333AIDBVTG4, 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 OPA333AIDBVTG4 part is unused and in its original packaging.
Return procedure for OPA333AIDBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA333AIDBVTG4 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…
