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Texas Instruments OPA735AIDBVRG4
- Part No.:
- OPA735AIDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA735AIDBVRG4.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,422
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Product details
Overview
OPA735AIDBVRG4 from Texas Instruments is a single-channel, zero-drift CMOS operational amplifier in SOT-23-5 package, delivering 5µV max input offset voltage, 0.05µV/°C max drift, and 750µA max quiescent current. It operates from 2.7V to 12V single supply, features rail-to-rail output swing within 50mV of rails, and supports precision transducer signal conditioning in battery-powered instrumentation.
For engineers reviewing the OPA735AIDBVRG4 datasheet, OPA735AIDBVRG4 pinout, OPA735AIDBVRG4 application, or OPA735AIDBVRG4 equivalent, key selection criteria include ultra-low offset stability over temperature, low bias current (200pA max), micro-size footprint for space-constrained PCBs, and verified performance in medical sensor front-ends and handheld test equipment.
Technical Context
The OPA735AIDBVRG4 uses auto-zeroing architecture with a time-continuous 1.6MHz main amplifier corrected every 100µs, enabling simultaneous low offset and near-zero drift. Its input stage provides high impedance (>1012Ω) and common-mode range from (V−) − 0.1V to (V+) − 1.5V, supporting accurate DC-coupled measurements across its full supply range.
It achieves unity-gain stability without phase reversal, delivers 1.5V/µs slew rate and 1.6MHz gain-bandwidth product, and maintains 115dB open-loop gain (min) and 130dB CMRR (typ) - all specified over −40°C to +85°C. The device lacks shutdown functionality, distinguishing it from the OPA734 family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 5µV (max) - enables sub-10µV system-level DC error in precision bridge amplifiers and thermopile interfaces. |
| Offset Drift | 0.05µV/°C (max) - ensures <0.5µV total drift over 10°C ambient change, critical for unattended temperature measurement systems. |
| Quiescent Current | 750µA (max) - allows continuous operation for >1 year on a single CR2032 coin cell in portable diagnostic devices. |
| Input Bias Current | 200pA (max) - preserves signal integrity in high-impedance pH electrode and piezoelectric sensor circuits. |
| Supply Range | 2.7V to 12V (single supply) - supports direct integration with Li-ion, 3.3V logic, and industrial 10V reference rails. |
| Output Swing | Within 50mV of rails (RL = 10kΩ) - maximizes dynamic range when driving SAR ADCs like ADS8342 with 0–5V input spans. |
| Gain-Bandwidth Product | 1.6MHz - sufficient for closed-loop bandwidths up to ~150kHz in 10× gain configurations for ECG front-ends. |
Pinout & Package
SOT-23-5 package (DBV), 1.45mm max height, JEDEC MO-178 compliant; footprint compatible with standard SOT-23 pick-and-place tooling and reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V− | Negative supply rail | Reference node for all internal circuitry; must be connected to ground or negative rail; enables input common-mode down to (V−) − 0.1V. |
| 2 - −IN | Inverting input | Differential input terminal; high-impedance node requiring matched trace routing and guard ring for <1µV noise contribution. |
| 3 - OUT | Amplifier output | Rail-to-rail capable output; drives 10kΩ loads to within 50mV of rails; requires 0.1µF local bypass capacitor per TI layout guidelines. |
| 4 - +IN | Non-inverting input | Differential input terminal; symmetrical to −IN; thermally matched layout essential to minimize Seebeck-induced offset errors. |
| 5 - V+ | Positive supply rail | Primary power input; supports 2.7V–12V range; absolute maximum 13.2V; decoupling capacitor mandatory at point-of-load. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-zero architecture | Eliminates thermal drift-induced baseline wander in multi-hour temperature logging applications. |
| Rail-to-rail output swing | Enables full utilization of 16-bit ADC input range without level-shifting circuitry in portable data loggers. |
| Low input bias current (200pA max) | Prevents loading errors in high-Z sensor interfaces such as glass pH electrodes and photodiode transimpedance stages. |
| 1.6MHz GBW with unity-gain stability | Supports stable closed-loop operation in active filters (e.g., 60Hz notch) without external compensation. |
| Specified −40°C to +85°C operation | Validated performance across industrial ambient ranges, including automotive cabin and outdoor medical enclosures. |
Applications
| Transducer Signal Conditioning | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying mV-level outputs from load cells, strain gauges, and pressure sensors in electronic scales and industrial weighing systems. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with ultra-low offset to preserve resolution in 24-bit ΣΔ ADC front-ends. Use Value: 5µV max offset contributes <0.005% FS error in 100mV full-scale bridge outputs, meeting Class III scale accuracy requirements. |
Use Scenario: Front-end amplification for ECG, EEG, and pulse oximetry analog signal chains in portable patient monitors. IC Role / Device Role / Timing Role: Low-noise, low-drift instrumentation amplifier driver with high CMRR to reject 50/60Hz mains interference. Use Value: 0.05µV/°C drift prevents baseline drift during 30-minute clinical sessions, eliminating manual recalibration. |
| Battery-Powered Instruments | Handheld Test Equipment |
Use Scenario: Signal conditioning in handheld multimeters, insulation testers, and portable calibrators powered by AA/AAA cells. IC Role / Device Role / Timing Role: Core op-amp in autoranging voltage/current measurement paths with minimal self-heating impact. Use Value: 750µA quiescent current extends battery life to >500 hours in continuous-use mode, exceeding IEC 61010-1 portability requirements. |
Use Scenario: Active filtering and buffer stages in handheld oscilloscopes, LCR meters, and signal generators. IC Role / Device Role / Timing Role: Stable gain block in programmable-gain amplifier (PGA) sections with <1ppm/°C gain drift contribution. Use Value: Rail-to-rail output swing ensures full-scale fidelity into 50Ω or 1MΩ inputs without clipping at ±5V supply rails. |
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 quiescent current (17µA vs 750µA), same 5µV offset, but 350kHz GBW and 0.16µV/°C drift. | Better suited for ultra-low-power wake-up sensor nodes; less suitable for bandwidth-critical active filters or fast-settling ADC drivers. | Select OPA333AIDBVR only when sub-100µA average current is mandatory and 350kHz bandwidth suffices. |
| LTC2050CS5#TRMPBF | Higher offset drift (0.03µV/°C typ, not max), 1.5MHz GBW, 1.5V/µs slew rate, but 1.2mA IQ and SO-8 package. | Offers superior AC performance for higher-frequency precision applications; larger footprint and higher power limit use in miniaturized designs. | Choose LTC2050CS5#TRMPBF when 1.5V/µs slew rate is required for 10-bit DAC buffering or fast step-response settling. |
Compared with OPA333AIDBVR and LTC2050CS5#TRMPBF, the OPA735AIDBVRG4 uniquely balances ultra-low offset stability (5µV/0.05µV/°C), 1.6MHz bandwidth, and SOT-23-5 size - making it optimal for space-constrained, medium-bandwidth precision analog front-ends where long-term DC accuracy is non-negotiable.
Availability
OPA735AIDBVRG4 is available at Aetrix Electronics and suitable for transducer signal conditioning, medical instrumentation, and battery-powered instruments requiring stable component supply across extended production lifecycles.
Supply support for OPA735AIDBVRG4 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 signal chain components.
The OPA735AIDBVRG4 belongs to TI's Zerø-Drift Series op-amps, engineered specifically for high-accuracy DC-coupled applications where offset voltage and thermal drift directly impact measurement validity - including industrial process control, portable diagnostics, and scientific instrumentation.
FAQ
What is the maximum operating supply voltage for the OPA735AIDBVRG4?
The OPA735AIDBVRG4 has an absolute maximum supply voltage of +13.2V. Operation above this rating risks permanent damage. Its specified operating range is +2.7V to +12V (single supply) or ±1.35V to ±6V (dual supply). For reliable long-term performance, TI recommends staying within the 2.7V–12V range with proper 0.1µF local bypass capacitors on both V+ and V− pins.
Does the OPA735AIDBVRG4 include a shutdown feature?
No, the OPA735AIDBVRG4 does not include a shutdown function. It is the non-shutdown variant of the OPA734/OPA735 family. Shutdown capability is exclusive to the OPA734 series (e.g., OPA734AIDBVR), which adds an Enable pin in the SOT-23-6 package. The OPA735AIDBVRG4 operates continuously when powered and draws 750µA max quiescent current at all times.
What is the input common-mode voltage range of the OPA735AIDBVRG4?
The OPA735AIDBVRG4 supports an input common-mode voltage range from (V−) − 0.1V to (V+) − 1.5V. For example, with a 3.3V single supply (V− = 0V, V+ = 3.3V), the valid input range is −0.1V to +1.8V. Inputs outside this range degrade CMRR and may cause phase reversal or increased bias current; external clamping resistors are recommended if overvoltage is possible.
How does the auto-zero architecture of the OPA735AIDBVRG4 affect its noise performance?
The OPA735AIDBVRG4's auto-zero topology produces 0.8µVPP integrated noise (0.01Hz–1Hz) and 2.5µVPP (0.1Hz–10Hz), with 135nV/√Hz density at 1kHz. Clock feedthrough is minimized by matching source impedances (<1kΩ) on both inputs; mismatched impedances increase 1/f noise and introduce spurs. This makes it ideal for DC and low-frequency precision, not high-speed RF applications.
Is the OPA735AIDBVRG4 RoHS-compliant and lead-free?
Yes, the OPA735AIDBVRG4 is RoHS-compliant and lead-free. Per TI's Package Option Addendum, it carries "Green (RoHS & no Sb/Br)" eco plan designation, with NIPDAU lead finish and JEDEC MSL Level-2-260°C-1 year moisture sensitivity rating. The "G4" suffix explicitly denotes TI's green packaging standard, confirming compliance with EU RoHS Directive 2011/65/EU.
OPA735AIDBVRG4 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:
- 1.5V/µs
- Gain Bandwidth Product:
- 1.6 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 600µA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA735AIDBVRG4 FAQ
1.How can I place an order for OPA735AIDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA735AIDBVRG4 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 OPA735AIDBVRG4 reliable?
The price and inventory of OPA735AIDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA735AIDBVRG4 is usually 5 days.
3.What payment methods are accepted for OPA735AIDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA735AIDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA735AIDBVRG4?
OPA735AIDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA735AIDBVRG4 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 OPA735AIDBVRG4?
For technical support, including OPA735AIDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA735AIDBVRG4 requirements.
6.How does Aetrix verify that OPA735AIDBVRG4 is sourced from the original manufacturer or authorized distributors?
All OPA735AIDBVRG4 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 OPA735AIDBVRG4 meets industry standards.
7.What is the process for return or replacement of OPA735AIDBVRG4?
All OPA735AIDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA735AIDBVRG4, 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 OPA735AIDBVRG4 part is unused and in its original packaging.
Return procedure for OPA735AIDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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