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Texas Instruments OPA2334AIDGSR
- Part No.:
- OPA2334AIDGSR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2334AIDGSR.pdf
- Description:
- IC OPAMP ZER-DRIFT 2CIRC 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,995
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Product details
Overview
OPA2334AIDGSR from Texas Instruments is a dual, zero-drift CMOS operational amplifier with shutdown control, designed for precision signal conditioning in low-voltage, single-supply systems. It delivers 5µV max input offset voltage, 0.05µV/°C max drift, 285µA per channel quiescent current, rail-to-rail output swing, and operates from +2.7V to +5.5V - enabling high-accuracy transducer interfacing in battery-powered instrumentation.
For engineers reviewing the OPA2334AIDGSR datasheet, OPA2334AIDGSR pinout, OPA2334AIDGSR application, or OPA2334AIDGSR equivalent, key selection criteria include guaranteed low-drift performance over –40°C to +125°C, dual-channel shutdown capability (2µA standby), MSOP-10 package compatibility, and verified rail-to-rail output drive into 10kΩ loads.
Technical Context
The OPA2334AIDGSR employs auto-zeroing architecture with a time-continuous 2MHz main amplifier corrected every 100µs, achieving near-zero long-term drift and eliminating 1/f noise. Its dual-channel design integrates independent enable pins (Enable A and Enable B) referenced to V–, supporting asynchronous power gating of each amplifier.
It features CMOS inputs with ±70pA typical bias current, 110dB min open-loop gain, 2MHz gain-bandwidth product, and 1.6V/µs slew rate - optimized for unity-gain stable operation in precision DC-coupled circuits such as thermocouple amplifiers and electronic scale front-ends.
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 across –40°C to +125°C industrial temperature range. |
| Quiescent Current | 570µA total (285µA per channel) - enables >1-year battery life in handheld test equipment at 3V supply. |
| Supply Range | +2.7V to +5.5V - supports direct interface with Li-ion, coin-cell, and regulated 3.3V rails. |
| Output Swing | Rail-to-rail into 10kΩ - delivers full 0V to 5.5V dynamic range for ADC driver applications. |
| Shutdown Current | 2µA total - reduces system standby power by >99% versus active mode. |
| Gain-Bandwidth | 2MHz - sufficient for stable closed-loop gain ≥10 up to 200kHz in filter and PGA stages. |
Pinout & Package
The OPA2334AIDGSR is housed in a 10-pin VSSOP (MSOP-10) package (TI package code DGS), measuring 3.05mm × 3.05mm × 1.07mm, with exposed thermal pad for enhanced power dissipation in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V+) | Positive Supply | Accepts +2.7V to +5.5V; requires local 0.1µF bypass capacitor to ground. |
| 2 (Out A) | Amplifier A Output | Rail-to-rail capable; high-impedance when Enable A = low. |
| 3 (–In A) | Inverting Input A | CMOS input; common-mode range extends to (V–) – 0.1V. |
| 4 (+In A) | Non-inverting Input A | Matches –In A in bias current and capacitance for minimal offset error. |
| 5 (Enable A) | Shutdown Control A | CMOS logic input; >0.75×V+ enables, <0.8V disables amplifier A. |
| 6 (Enable B) | Shutdown Control B | Independent logic control for amplifier B; no shared enable line. |
| 7 (+In B) | Non-inverting Input B | Electrically isolated from Channel A; supports dual-sensor or differential pair use. |
| 8 (–In B) | Inverting Input B | Paired with +In B; matched to Channel A for interleaved or chopper-assisted topologies. |
| 9 (Out B) | Amplifier B Output | High-impedance state during shutdown; supports analog multiplexing onto shared bus. |
| 10 (V–) | Negative Supply / Ground Reference | Reference for all inputs, outputs, and enable logic; must be stable and low-noise. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-zero topology | Eliminates 1/f noise and guarantees <0.05µV/°C drift - critical for DC-stable medical instrumentation calibration. |
| Dual independent shutdown | Enables per-channel power gating (tON = 150µs, tOFF = 1µs) - ideal for time-multiplexed sensor arrays. |
| Rail-to-rail output stage | Delivers full 0V to V+ swing into 10kΩ, enabling direct interface with 12-bit+ SAR ADCs without level-shifting. |
| Low input bias current | ±70pA typical - preserves accuracy in high-impedance pH electrode and photodiode transimpedance circuits. |
| Extended temperature range | Specified from –40°C to +125°C - qualified for under-hood automotive and industrial process control environments. |
Applications
| Transducer Signal Conditioning | Temperature Measurement |
|---|---|
Use Scenario: Amplifying low-level mV outputs from load cells, strain gauges, or pressure sensors in electronic scales and industrial weighing systems. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end with independent shutdown for channel-selective excitation and measurement. Use Value: 5µV offset and 0.05µV/°C drift ensure <0.01% full-scale error stability across ambient temperature swings - eliminating need for frequent recalibration. | Use Scenario: Cold-junction compensation and linearization of K-type thermocouples in portable medical thermometers and HVAC sensors. IC Role / Device Role / Timing Role: Precision op amp in ratiometric bridge configuration with reference voltage buffering and cold-junction sensing. Use Value: Rail-to-rail output swing and 2.7V minimum supply allow direct interface with 3.3V microcontrollers and 16-bit delta-sigma ADCs - reducing BOM count. |
| Battery-Powered Instrumentation | Handheld Test Equipment |
Use Scenario: Front-end amplification and filtering in portable multimeters, data loggers, and environmental monitors operating on AA/AAA or Li-ion batteries. IC Role / Device Role / Timing Role: Low-power dual op amp driving ADC input while enabling selective channel sleep during idle periods. Use Value: 570µA total quiescent current and 2µA shutdown mode extend battery life to >18 months in 1-sample-per-second logging applications. | Use Scenario: Signal conditioning in handheld oscilloscopes, LCR meters, and portable spectrum analyzers requiring high DC accuracy and fast settling. IC Role / Device Role / Timing Role: Dual-channel buffer and gain stage with auto-zero correction ensuring stable baseline during probe switching and range changes. Use Value: 150µs enable time includes one full auto-zero cycle - guarantees specified offset accuracy before first measurement sample. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDGSR | Same zero-drift architecture but lower 17µA per channel quiescent current; no shutdown function; 0.1µV/°C max drift. | Lacks per-channel enable control - unsuitable for time-multiplexed or duty-cycled sensor systems. | Select when ultra-low power dominates over shutdown flexibility and tighter drift spec is acceptable. |
| AD8629ARZ-REEL7 | Single-supply, rail-to-rail, zero-drift op amp; 1µV max offset, 0.01µV/°C max drift; SO-8 package; no shutdown. | Single-channel only; higher precision but no power-gating capability; larger footprint than MSOP-10. | Select when highest DC accuracy is required and dual-channel shutdown is not needed - e.g., high-end medical sensor front-ends. |
Compared with OPA2334AIDGSR, OPA2333AIDGSR trades shutdown control for lower quiescent current, while AD8629ARZ-REEL7 offers superior drift performance in a single-channel SO-8 format - making OPA2334AIDGSR the optimal choice for space-constrained, dual-sensor systems requiring synchronized power management.
Availability
OPA2334AIDGSR is available at Aetrix Electronics and suitable for battery-powered instrumentation, medical sensor interfaces, and industrial transducer signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2334AIDGSR 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 OPA2334AIDGSR belongs to TI's Zerø-Drift Series of CMOS op amps, engineered specifically for high-accuracy, low-power, single-supply applications in medical devices, portable test equipment, and industrial sensing where DC stability and thermal robustness are critical.
FAQ
What is the maximum operating temperature range for the OPA2334AIDGSR?
The OPA2334AIDGSR is fully specified from –40°C to +125°C and rated for continuous operation up to +150°C junction temperature. This makes it suitable for under-hood automotive, industrial process control, and medical sterilization environments where thermal reliability is essential. The device's zero-drift architecture maintains performance stability across this full range without calibration.
Does the OPA2334AIDGSR support true rail-to-rail input operation?
No, the OPA2334AIDGSR does not support rail-to-rail input. Its input common-mode voltage range extends from (V–) – 0.1V to (V+) – 1.5V. At a +3V supply, this means usable input range is approximately 0.1V to 1.5V - requiring external biasing for signals near V+ or V–. However, its rail-to-rail output stage delivers full swing from V– to V+, enabling direct ADC interfacing.
How does the shutdown feature of the OPA2334AIDGSR affect output behavior?
When either Enable A or Enable B is driven low, the corresponding amplifier output enters a high-impedance state - not a tri-state or forced-rail condition. This allows safe multiplexing of multiple OPA2334AIDGSR outputs onto a shared analog bus without contention. The disable time is 1µs, and the standby current drops to 2µA total for both channels.
Can the OPA2334AIDGSR drive capacitive loads without instability?
The OPA2334AIDGSR is unity-gain stable and characterized for capacitive load drive up to 300pF (per typical characteristics). For loads exceeding 300pF, a small series resistor (e.g., 10–50Ω) between the output and load is recommended to maintain phase margin. Its 1.6V/µs slew rate and 2MHz GBW support stable operation with moderate capacitive loading in sensor buffer and filter applications.
What is the purpose of the auto-zero cycle timing in the OPA2334AIDGSR?
The OPA2334AIDGSR performs internal offset correction every 100µs using proprietary auto-zeroing. Upon power-up or exit from shutdown, one full 100µs cycle is required to achieve specified 5µV offset accuracy. During this period, the amplifier functions correctly but with unspecified offset. This timing is explicitly reflected in the 150µs tON specification, which includes the auto-zero cycle plus propagation delay.
OPA2334AIDGSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 2
- 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 (x2 Channels)
- 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:
- 10-VSSOP
OPA2334AIDGSR FAQ
1.How can I place an order for OPA2334AIDGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2334AIDGSR 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 OPA2334AIDGSR reliable?
The price and inventory of OPA2334AIDGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2334AIDGSR is usually 5 days.
3.What payment methods are accepted for OPA2334AIDGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2334AIDGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2334AIDGSR?
OPA2334AIDGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2334AIDGSR 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 OPA2334AIDGSR?
For technical support, including OPA2334AIDGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2334AIDGSR requirements.
6.How does Aetrix verify that OPA2334AIDGSR is sourced from the original manufacturer or authorized distributors?
All OPA2334AIDGSR 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 OPA2334AIDGSR meets industry standards.
7.What is the process for return or replacement of OPA2334AIDGSR?
All OPA2334AIDGSR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2334AIDGSR, 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 OPA2334AIDGSR part is unused and in its original packaging.
Return procedure for OPA2334AIDGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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