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Texas Instruments OPA335AIDBVRG4
- Part No.:
- OPA335AIDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA335AIDBVRG4.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,885
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Product details
Overview
OPA335AIDBVRG4 from Texas Instruments is a single, zero-drift CMOS operational amplifier in SOT-23-5 package, delivering 5 µV max input offset voltage, 0.05 µV/°C max drift, 285 µA quiescent current, rail-to-rail output swing, and unity-gain stability - optimized for precision transducer signal conditioning in battery-powered instrumentation.
For engineers reviewing the OPA335AIDBVRG4 datasheet, OPA335AIDBVRG4 pinout, OPA335AIDBVRG4 application, or OPA335AIDBVRG4 equivalent, key selection criteria include ultra-low offset drift over temperature, single-supply operation down to +2.7 V, high CMRR (110 dB min), low 1.4 µVPP 0.01–10 Hz noise, and compatibility with micro-power sensor front-ends requiring <100 µV total error budget.
Technical Context
The OPA335AIDBVRG4 employs auto-zeroing architecture with a time-continuous 2 MHz main amplifier corrected every 100 µs, enabling near-zero long-term drift and eliminating 1/f noise without introducing switching artifacts at the fundamental correction frequency. Its input stage uses CMOS topology with ±70 pA typical input bias current and rail-to-rail common-mode range extending from (V−) − 0.1 V to (V+) − 1.5 V.
This op amp is unity-gain stable and immune to output phase reversal. It achieves 2 MHz gain-bandwidth product, 1.6 V/µs slew rate, and 110 dB open-loop gain (min) across −40°C to +125°C, supporting precision DC-coupled amplification in medical sensors and electronic scales where thermal EMF cancellation and layout-insensitive accuracy are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 5 µV (max) - ensures ≤10 µV total system offset error in 16-bit ADC interfaces with gain ≤200. |
| Offset Drift vs Temp | 0.05 µV/°C (max) - contributes <0.6 µV error over 12°C ambient shift, enabling stable calibration in handheld test equipment. |
| Quiescent Current | 285 µA - supports >1-year battery life in coin-cell-powered medical sensors drawing <1 µA average system current. |
| Supply Voltage Range | +2.7 V to +5.5 V - enables direct interface with Li-ion, 3.3 V LDOs, and dual-supply systems without level-shifting. |
| CMRR | 110 dB (min) - rejects ≥100 kΩ unbalanced source impedance errors in bridge sensor applications. |
| Gain-Bandwidth Product | 2 MHz - supports closed-loop bandwidth >100 kHz at G = 10 for fast-response temperature measurement circuits. |
| 0.01–10 Hz Noise | 1.4 µVPP - maintains <1 LSB error in 16-bit, 100 kSPS data acquisition with 10 mV full-scale input. |
Pinout & Package
SOT-23-5 package (JEDEC MO-178 compliant), 2.9 mm × 1.6 mm footprint, 1.45 mm height, moisture sensitivity level (MSL) 1 - suitable for reflow soldering without dry-pack requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V− | Negative supply rail | Reference for all internal circuitry; must be connected to ground or negative supply; enables rail-to-rail output swing to V−. |
| 2 - –In | Inverting input | Differential input node; high-impedance CMOS input (±70 pA bias); requires matched trace lengths to minimize thermoelectric offset. |
| 3 - Out | Amplifier output | Rail-to-rail capable; drives 10 kΩ load to within 15 mV of rails; stable with ≥100 pF capacitive loads per typical characteristics. |
| 4 - +In | Non-inverting input | Differential input node; identical bias and noise performance as –In; used for reference-based sensor configurations (e.g., thermocouple cold-junction compensation). |
| 5 - V+ | Positive supply rail | Power input; accepts +2.7 V to +5.5 V; requires local 0.1 µF ceramic decoupling capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-zero architecture | Eliminates 1/f noise and long-term drift; delivers stable 5 µV offset across 150°C operating range without recalibration. |
| Rail-to-rail output swing | Swings to within 15 mV of V− and V+ at 10 kΩ load - maximizes dynamic range in single-supply 3.3 V systems. |
| High CMRR (110 dB min) | Rejects common-mode interference from noisy digital supplies or shared ground paths in mixed-signal PCB layouts. |
| Low 0.01–10 Hz noise (1.4 µVPP) | Enables sub-µV resolution in DC-coupled strain gauge or thermistor amplifiers without external filtering. |
| Unity-gain stable, no phase reversal | Guarantees predictable step response in G = 1 buffer configurations - essential for precision reference buffering and sensor excitation. |
Applications
| Transducer Signal Conditioning | Temperature Measurement |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from load cells, pressure sensors, or RTDs in portable electronic scales. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with gain = 100–1000, rejecting thermoelectric offsets via matched input traces. Use Value: 5 µV offset + 0.05 µV/°C drift ensures ≤0.01% FS error over industrial temperature range without factory calibration. |
Use Scenario: Cold-junction compensation and linearization of K-type thermocouples in handheld multimeters. IC Role / Device Role / Timing Role: Low-noise, low-drift buffer for thermocouple voltage and reference junction sensing resistor network. Use Value: 1.4 µVPP noise and 110 dB CMRR enable ±0.1°C accuracy in 0–100°C range with 16-bit ADC digitization. |
| Medical Instrumentation | Battery-Powered Instruments |
|
Use Scenario: Front-end amplification of ECG electrode signals or photoplethysmography (PPG) current outputs. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail I/V converter and gain stage with ultra-low input bias current (<1 nA). Use Value: ±70 pA input bias minimizes electrode polarization error; 285 µA IQ extends disposable sensor module battery life to >2 years. |
Use Scenario: Signal conditioning in handheld insulation resistance testers or portable pH meters. IC Role / Device Role / Timing Role: Low-power, high-accuracy amplifier for analog front-end multiplexing and auto-ranging functions. Use Value: Stable offset over temperature eliminates warm-up drift; 2.7 V minimum supply allows direct use with primary alkaline or Li-MnO₂ cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | Lower IQ (17 µA), same 5 µV VOS, but 0.1 µV/°C drift (2× higher than OPA335AIDBVRG4). | Better for ultra-low-power sleep modes; less suitable for wide-temperature industrial environments. | Select when average current <50 µA is mandatory and thermal drift can be compensated digitally. |
| LTC2050CS5#TRMPBF | Higher VOS (10 µV max), lower noise (0.75 µVPP), 0.03 µV/°C drift, but 550 µA IQ and SO-8 only. | Superior noise performance for sub-µV applications; not available in SOT-23-5 for space-constrained designs. | Select when lowest possible noise dominates over package size and quiescent current constraints. |
Compared with OPA335AIDBVRG4, OPA333AIDBVR trades drift stability for ultra-low power, while LTC2050CS5#TRMPBF offers lower noise and drift but requires larger packaging and draws nearly double the supply current - making OPA335AIDBVRG4 optimal for SOT-23-5–constrained, wide-temperature, precision DC applications.
Availability
OPA335AIDBVRG4 is available at Aetrix Electronics and suitable for transducer signal conditioning, temperature measurement, medical instrumentation, battery-powered instruments, and handheld test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA335AIDBVRG4 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 amplification in sensor interfaces, medical devices, and portable instrumentation where thermal stability and long-term repeatability are critical.
FAQ
What is the maximum operating temperature range for the OPA335AIDBVRG4?
The OPA335AIDBVRG4 is specified for operation from −40°C to +125°C, with absolute maximum junction temperature rated at +150°C. This extended range supports deployment in automotive under-hood modules, industrial process controllers, and outdoor medical devices where ambient temperatures exceed standard commercial limits.
Does the OPA335AIDBVRG4 include shutdown functionality?
No, the OPA335AIDBVRG4 is the non-shutdown version of the family. Shutdown capability is exclusive to the OPA334 series (e.g., OPA334AIDBVRG4). The OPA335AIDBVRG4 operates continuously when powered and does not feature an Enable pin or standby current mode.
Can the OPA335AIDBVRG4 drive capacitive loads without instability?
Yes - the OPA335AIDBVRG4 is unity-gain stable and characterized to drive ≥100 pF capacitive loads with minimal overshoot, as confirmed in the Typical Characteristics section of the datasheet. For loads >300 pF, a small series resistor (e.g., 10–50 Ω) at the output is recommended to maintain phase margin.
What is the input common-mode voltage range of the OPA335AIDBVRG4?
The input common-mode voltage range is (V−) − 0.1 V to (V+) − 1.5 V. At +2.7 V supply, this yields −0.1 V to +1.2 V; at +5.5 V, it extends to −0.1 V to +4.0 V. This allows direct interfacing with sensors referenced to ground or mid-supply without level-shifting circuitry.
Is the OPA335AIDBVRG4 RoHS compliant and lead-free?
Yes, the OPA335AIDBVRG4 is RoHS compliant and features NiPdAu (nickel-palladium-gold) lead finish. Its MSL rating is Level-1 (unlimited floor life), and it meets JEDEC J-STD-020 reflow profile requirements for Pb-free assembly processes.
OPA335AIDBVRG4 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
OPA335AIDBVRG4 FAQ
1.How can I place an order for OPA335AIDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA335AIDBVRG4 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 OPA335AIDBVRG4 reliable?
The price and inventory of OPA335AIDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA335AIDBVRG4 is usually 5 days.
3.What payment methods are accepted for OPA335AIDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA335AIDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA335AIDBVRG4?
OPA335AIDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA335AIDBVRG4 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 OPA335AIDBVRG4?
For technical support, including OPA335AIDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA335AIDBVRG4 requirements.
6.How does Aetrix verify that OPA335AIDBVRG4 is sourced from the original manufacturer or authorized distributors?
All OPA335AIDBVRG4 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 OPA335AIDBVRG4 meets industry standards.
7.What is the process for return or replacement of OPA335AIDBVRG4?
All OPA335AIDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA335AIDBVRG4, 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 OPA335AIDBVRG4 part is unused and in its original packaging.
Return procedure for OPA335AIDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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