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Texas Instruments OPA335AIDBVTG4
- Part No.:
- OPA335AIDBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA335AIDBVTG4.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,381
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Product details
Overview
OPA335AIDBVTG4 from Texas Instruments is a single, zero-drift CMOS operational amplifier in SOT23-5 package, delivering 5µV max input offset voltage, 0.05µV/°C max drift, and 285µA quiescent current for precision signal conditioning in battery-powered instrumentation and transducer interfaces.
For engineers reviewing the OPA335AIDBVTG4 datasheet, OPA335AIDBVTG4 pinout, OPA335AIDBVTG4 application, or OPA335AIDBVTG4 equivalent, key selection criteria include rail-to-rail output swing, –40°C to +125°C operation, auto-zero topology for long-term stability, and compatibility with low-voltage single-supply systems down to +2.7V.
Technical Context
The OPA335AIDBVTG4 employs a time-continuous auto-zero architecture with a 2MHz main amplifier corrected every 100µs, enabling near-zero drift without chopper-induced switching artifacts. Its input stage features ultra-low bias current (±70pA typ) and rail-to-rail common-mode range extending to (V–) – 0.1V.
It achieves unity-gain stability with 2MHz gain-bandwidth product and 1.6V/µs slew rate, while supporting true single-supply operation from +2.7V to +5.5V. Output swing reaches within 15mV of rails at 10kΩ load across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 5µV max - ensures ≤0.001% error in 0.5V full-scale sensor outputs without trimming. |
| Offset Drift | 0.05µV/°C max - maintains <1µV total drift over 85°C industrial temperature span. |
| Quiescent Current | 285µA - enables >1-year battery life in 10µA-average-current handheld test equipment. |
| Supply Voltage Range | +2.7V to +5.5V - supports direct connection to Li-ion, 3.3V, or 5V rails without regulation. |
| Gain-Bandwidth Product | 2MHz - sufficient for anti-aliasing filtering and closed-loop gains up to 100 at 20kHz. |
| Output Swing | Within 15mV of rails (10kΩ) - allows full utilization of ADC reference range in single-supply data acquisition. |
| Input Bias Current | ±70pA typ - minimizes voltage error across high-impedance pH or thermocouple sources. |
Pinout & Package
SOT23-5 package (DBV), 5-pin surface-mount, JEDEC MO-178 compliant, 2.9mm × 1.6mm footprint, 1.07mm max height, moisture sensitivity level (MSL) 1 (unlimited floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive supply rail | Accepts +2.7V to +5.5V; requires local 0.1µF bypass capacitor for stability. |
| 2 - –In | Inverting input | High-impedance node; sensitive to layout-induced thermoelectric offsets; avoid dissimilar metal traces. |
| 3 - Out | Amplifier output | Rail-to-rail capable; drives 10kΩ loads to within 15mV of V– or V+; stable with ≥300pF capacitive loads. |
| 4 - V– | Negative supply rail | May be ground in single-supply use; output can swing to V– (0V) or slightly below with external pull-down. |
| 5 - +In | Non-inverting input | Matches –In in bias current and offset; common-mode range extends to (V–) – 0.1V for ground-referenced sensors. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-zeroing | 100µs correction cycle eliminates thermal drift and 1/f noise without introducing 10kHz switching artifacts. |
| Rail-to-rail output | Swings to within 15mV of V– or V+ at 10kΩ, enabling full-scale use of 12-bit+ ADC references in 3.3V systems. |
| Ultra-low input bias current | ±70pA typ minimizes voltage drop across >10MΩ source impedances (e.g., piezoresistive bridges, pH electrodes). |
| Single-supply optimized | Operates from +2.7V with input common-mode down to (V–) – 0.1V, simplifying biasing for grounded-sensor front-ends. |
| Low-noise precision | 1.4µVPP (0.01Hz–10Hz) and 20fA/√Hz current noise support µV-level thermocouple and strain gauge measurements. |
Applications
| Transducer Signal Conditioning | Temperature Measurement |
|---|---|
|
Use Scenario: Amplifying mV-level outputs from load cells, pressure sensors, or RTDs in portable electronic scales. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset cancellation before ADC digitization. Use Value: 5µV offset and 0.05µV/°C drift ensure ≤0.1°C error over full industrial temperature range without calibration. |
Use Scenario: Cold-junction compensation and linearization of K-type thermocouples in medical thermometers. IC Role / Device Role / Timing Role: Low-drift buffer and summing amplifier for reference junction voltage subtraction. Use Value: Input bias current <100pA prevents self-heating errors in high-impedance thermistor networks. |
| Battery-Powered Instrumentation | Handheld Test Equipment |
|
Use Scenario: Front-end amplification in portable multimeters and data loggers powered by coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Low-quiescent-current signal conditioner preserving battery runtime during continuous sampling. Use Value: 285µA IQ enables >500-hour operation on a 150mAh CR2032 cell at 1-second sampling intervals. |
Use Scenario: Active probe interface and signal scaling in handheld oscilloscopes and LCR meters. IC Role / Device Role / Timing Role: Unity-gain stable buffer isolating high-impedance DUTs from measurement circuitry. Use Value: 2MHz GBW and 1.6V/µs slew rate support accurate 100kHz sine wave reproduction with <1% distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | Lower IQ (17µA), same 5µV VOS, but only 350kHz GBW and no guaranteed 125°C operation. | Optimized for ultra-low-power sub-µA systems; insufficient bandwidth for fast-settling data acquisition. | Select OPA333AIDBVR only when quiescent current <50µA is mandatory and bandwidth ≤350kHz suffices. |
| LTC2050CS5#TRMPBF | Higher VOS drift (0.03µV/°C typ), 1.5mA IQ, SO-8 package; specified for –40°C to +125°C with tighter initial VOS (1µV max). | Preferred where lower initial offset outweighs power penalty; not suitable for space-constrained SOT23 layouts. | Choose LTC2050CS5#TRMPBF when absolute initial accuracy dominates over board area and battery life. |
Compared with OPA335AIDBVTG4, OPA333AIDBVR trades bandwidth and temperature range for micro-power operation, while LTC2050CS5#TRMPBF offers superior initial offset at higher cost and power-making OPA335AIDBVTG4 the optimal balance for compact, wide-temperature, medium-bandwidth precision analog front-ends.
Availability
OPA335AIDBVTG4 is available at Aetrix Electronics and suitable for transducer signal conditioning, temperature measurement, and battery-powered instrumentation requiring stable component supply with guaranteed long-term parametric consistency.
Supply support for OPA335AIDBVTG4 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 signal chain solutions.
The OPA335 series belongs to TI's Zerø-Drift op amp product line, engineered specifically for high-accuracy, low-drift DC signal conditioning in harsh thermal environments and portable power-constrained systems.
FAQ
What is the maximum operating temperature range for the OPA335AIDBVTG4?
The OPA335AIDBVTG4 is fully specified from –40°C to +125°C and rated for continuous operation up to +150°C junction temperature. Its auto-zero architecture maintains 5µV max offset and 0.05µV/°C drift across this full industrial range, making it suitable for under-hood automotive sensors and industrial control modules.
Does the OPA335AIDBVTG4 support rail-to-rail input operation?
No-the OPA335AIDBVTG4 supports rail-to-rail *output* swing but has an input common-mode range from (V–) – 0.1V to (V+) – 1.5V. At +2.7V supply, this means inputs must stay between –0.1V and +1.2V; exceeding this range degrades CMRR and may cause phase reversal.
Can the OPA335AIDBVTG4 drive capacitive loads directly?
Yes-the OPA335AIDBVTG4 is unity-gain stable and characterized to drive ≥300pF loads without oscillation. For loads >500pF, TI recommends adding a small series resistor (10–50Ω) between output and capacitance to maintain phase margin, as shown in Figure 5 of the SBOS245D datasheet.
Is the OPA335AIDBVTG4 pin-compatible with other members of the OPA33x family?
No-OPA335AIDBVTG4 (SOT23-5) is not pin-compatible with OPA334 (SOT23-6, includes Enable pin) or OPA2335 (dual, MSOP-8/SO-8). Its 5-pin SOT23 layout matches only OPA335 variants; substitution requires PCB redesign due to missing shutdown functionality and different pin count.
What is the typical input voltage noise of the OPA335AIDBVTG4?
The OPA335AIDBVTG4 delivers 1.4µVPP integrated input voltage noise over 0.01Hz–10Hz and 20fA/√Hz input current noise density at 10Hz. This performance enables resolution of sub-µV signals from low-noise sources like thermopiles and photodiodes without external filtering.
OPA335AIDBVTG4 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:
- 1.6V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 70 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 285µA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 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
OPA335AIDBVTG4 FAQ
1.How can I place an order for OPA335AIDBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA335AIDBVTG4 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 OPA335AIDBVTG4 reliable?
The price and inventory of OPA335AIDBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA335AIDBVTG4 is usually 5 days.
3.What payment methods are accepted for OPA335AIDBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA335AIDBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA335AIDBVTG4?
OPA335AIDBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA335AIDBVTG4 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 OPA335AIDBVTG4?
For technical support, including OPA335AIDBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA335AIDBVTG4 requirements.
6.How does Aetrix verify that OPA335AIDBVTG4 is sourced from the original manufacturer or authorized distributors?
All OPA335AIDBVTG4 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 OPA335AIDBVTG4 meets industry standards.
7.What is the process for return or replacement of OPA335AIDBVTG4?
All OPA335AIDBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA335AIDBVTG4, 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 OPA335AIDBVTG4 part is unused and in its original packaging.
Return procedure for OPA335AIDBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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