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Texas Instruments OPA2334AIDGST
- Part No.:
- OPA2334AIDGST
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2334AIDGST.pdf
- Description:
- IC OPAMP ZER-DRIFT 2CIRC 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:427
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Product details
Overview
OPA2334AIDGST from Texas Instruments is a dual, zero-drift CMOS operational amplifier with shutdown control, designed for precision signal conditioning in low-power, single-supply systems. It delivers 5 µV max input offset voltage, 0.05 µV/°C max drift, 285 µA per channel quiescent current, rail-to-rail output swing, and operates from +2.7 V to +5.5 V - enabling high-accuracy transducer interfacing in battery-powered instrumentation.
For engineers reviewing the OPA2334AIDGST datasheet, OPA2334AIDGST pinout, OPA2334AIDGST application, or OPA2334AIDGST equivalent, key selection criteria include ultra-low offset drift over temperature, dual-channel shutdown capability, MSOP-10 package constraints, and verified performance in medical sensor front-ends and handheld test equipment requiring stable DC gain accuracy.
Technical Context
The OPA2334AIDGST employs auto-zeroing architecture with a time-continuous 2 MHz main amplifier corrected every 100 µs, achieving near-zero long-term drift and eliminating 1/f noise. Its dual-channel design includes independent enable pins (Enable A and Enable B), each controlling shutdown of one amplifier with 1 µs disable and 150 µs enable times - including one full auto-zero cycle for VOS accuracy recovery.
Input common-mode range extends from (V–) – 0.1 V to (V+) – 1.5 V; output swings within 15 mV of rails at 10 kΩ load across –40°C to +125°C. The device is unity-gain stable and immune to output phase reversal, supporting precision DC-coupled configurations without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 5 µV (max) - ensures ≤0.001% gain error in 1 V full-scale 16-bit measurement systems |
| Offset Drift | 0.05 µV/°C (max) - enables <±1 µV total drift over 85°C industrial temperature span |
| Quiescent Current | 570 µA (total, both channels) - supports >1-year battery life in 10 µA average-current handheld instruments |
| Supply Range | +2.7 V to +5.5 V - compatible with single-cell Li-ion, 3 V coin cell, and regulated 3.3 V rails |
| Gain-Bandwidth | 2 MHz - sufficient for 10 kHz sensor signal bandwidth with ≥20 dB phase margin |
| CMRR | 110 dB (min) - rejects >100 kΩ unbalanced source impedance errors in bridge sensor interfaces |
| Shutdown Current | 2 µA (per channel) - reduces system standby power by >99% vs active mode |
Pinout & Package
OPA2334AIDGST is housed in a 10-pin MicroSIZE MSOP (DGS) package, 3.0 mm × 3.0 mm × 1.07 mm, with exposed thermal pad (not electrically connected). Pin 1 marked via laser etch; pin 1 location confirmed per TI drawing S-PDSO-G10.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive supply rail | Accepts +2.7 V to +5.5 V; requires local 0.1 µF bypass capacitor to ground |
| 2 - Out B | Amplifier B output | Rail-to-rail swing; high-impedance state when Enable B = low |
| 3 - –In B | Inverting input B | High-impedance CMOS node; input bias current ±70 pA at 25°C |
| 4 - +In B | Non-inverting input B | Matched to –In B for optimal CMRR; differential input capacitance = 1 pF |
| 5 - Enable B | Shutdown control B | CMOS logic input; valid high = >0.75×V+, valid low = <0.8 V above V– |
| 6 - Out A | Amplifier A output | Independent rail-to-rail output; multiplexable onto shared analog bus during shutdown |
| 7 - –In A | Inverting input A | Electrically isolated from Channel B; enables dual-sensor simultaneous sampling |
| 8 - +In A | Non-inverting input A | Thermally matched to –In A to minimize Seebeck-induced offset in precision thermocouple circuits |
| 9 - V– | Negative supply rail | Reference for Enable pins and input common-mode range; may be ground in single-supply use |
| 10 - Enable A | Shutdown control A | Independent logic control; allows asymmetric power gating of dual amplifiers |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-zero topology | Eliminates 1/f noise and guarantees <±1 µV total offset drift over 10-year lifetime at 85°C |
| Dual independent shutdown | Reduces system idle power to 4 µA total while preserving channel isolation and startup repeatability |
| Rail-to-rail output | Delivers full dynamic range from 0 V to V+ in single-supply 3.3 V systems, critical for ADC input drive |
| High CMRR (110 dB min) | Maintains accuracy with mismatched PCB trace impedances up to 100 kΩ in Wheatstone bridge readouts |
| Unity-gain stable | Operates without external compensation in gain = +1 transimpedance or buffer configurations |
Applications
| Transducer Signal Conditioning | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying low-level mV outputs from strain gauges, load cells, 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 multi-sensor polling and power cycling. Use Value: 5 µV offset and 0.05 µV/°C drift ensure ≤0.01% linearity error over temperature without calibration - reducing factory trim steps. | Use Scenario: Front-end amplification of ECG, EEG, or temperature probe signals in portable patient monitors and diagnostic devices. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with rail-to-rail output driving 16-bit SAR ADCs at 100 kSPS. Use Value: 285 µA per channel quiescent current enables >24-hour operation on CR2032 coin cell; shutdown cuts leakage to 2 µA/channel during sleep. |
| Battery-Powered Test Equipment | Temperature Measurement Systems |
Use Scenario: Portable multimeters and handheld oscilloscopes requiring stable DC accuracy and low self-heating during extended measurements. IC Role / Device Role / Timing Role: Dual op amp providing reference buffer and sensor signal gain with synchronized shutdown between measurement phases. Use Value: Auto-zero correction every 100 µs prevents drift accumulation during 1-second integration windows - maintaining ±1 LSB accuracy at 16-bit resolution. | Use Scenario: K-type thermocouple linearization and cold-junction compensation in HVAC controllers and lab-grade data loggers. IC Role / Device Role / Timing Role: Dual amplifier implementing thermocouple voltage amplification and RTD-based reference compensation in single-chip solution. Use Value: Matched input pairs and low thermal EMF packaging minimize parasitic thermocouple errors below 0.1 µV/°C - exceeding Class I thermocouple accuracy standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision dual op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2335AIDR | No shutdown function; 570 µA quiescent current (same); identical offset/drift specs | Requires external power gating; unsuitable for duty-cycled sensor nodes | Select when board space permits discrete FET switching and lowest possible cost is prioritized |
| LTC2053CMS8#PBF | Single-channel, 1.2 µV max offset, 0.015 µV/°C drift, 600 µA IQ, SO-8 package | Requires two devices for dual functionality; higher precision but no integrated shutdown | Select when sub-µV drift is mandatory and layout allows dual SO-8 placement |
Compared with OPA2334AIDGST, OPA2335AIDR eliminates shutdown logic to reduce cost and complexity but forfeits autonomous power management, while LTC2053CMS8#PBF offers superior drift performance at the expense of channel count, package size, and system-level power control integration.
Availability
OPA2334AIDGST is available at Aetrix Electronics and suitable for medical instrumentation, handheld test equipment, and battery-powered industrial sensors requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for OPA2334AIDGST 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 OPA2334AIDGST belongs to TI's Zerø-Drift Series, engineered specifically for high-accuracy, low-power, single-supply applications where DC precision, thermal stability, and compact packaging are critical - such as portable diagnostics and IoT edge sensing.
FAQ
What is the maximum operating temperature range for the OPA2334AIDGST?
The OPA2334AIDGST 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 PLC I/O cards, and outdoor environmental monitoring systems where ambient temperatures exceed standard commercial limits.
Does the OPA2334AIDGST require external compensation for unity-gain stability?
No, the OPA2334AIDGST is internally compensated and unity-gain stable. It does not require external capacitors or resistors for stability in gain = +1 configurations such as voltage followers or transimpedance amplifiers - simplifying layout and ensuring robust performance across process, voltage, and temperature variations.
How does the shutdown feature of the OPA2334AIDGST affect output behavior?
When either Enable A or Enable B is driven low, the corresponding amplifier enters shutdown mode with 2 µA supply current and its output transitions to a high-impedance state - not a tri-state or clamped condition. This allows safe multiplexing of multiple OPA2334AIDGST outputs onto a shared analog bus without loading or contention.
Can the OPA2334AIDGST drive heavy capacitive loads, such as ADC input capacitors?
The OPA2334AIDGST is characterized for stable operation with capacitive loads up to 300 pF (see Typical Characteristics). For larger loads like SAR ADC inputs (>1 nF), a series isolation resistor (e.g., 10–50 Ω) is recommended between the OPA2334AIDGST output and the ADC input to maintain phase margin and prevent ringing or overshoot.
Is the OPA2334AIDGST RoHS compliant and lead-free?
Yes, the OPA2334AIDGST is RoHS compliant and features lead-free terminal finish (NiPdAu) per TI's packaging documentation. It meets JEDEC Level-2 moisture sensitivity requirements and is qualified for reflow soldering at peak temperatures up to 260°C - suitable for standard surface-mount assembly processes.
OPA2334AIDGST 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
OPA2334AIDGST FAQ
1.How can I place an order for OPA2334AIDGST through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2334AIDGST 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 OPA2334AIDGST reliable?
The price and inventory of OPA2334AIDGST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2334AIDGST is usually 5 days.
3.What payment methods are accepted for OPA2334AIDGST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2334AIDGST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2334AIDGST?
OPA2334AIDGST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2334AIDGST 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 OPA2334AIDGST?
For technical support, including OPA2334AIDGST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2334AIDGST requirements.
6.How does Aetrix verify that OPA2334AIDGST is sourced from the original manufacturer or authorized distributors?
All OPA2334AIDGST 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 OPA2334AIDGST meets industry standards.
7.What is the process for return or replacement of OPA2334AIDGST?
All OPA2334AIDGST units undergo pre-shipment inspection (PSI). If there is an issue with OPA2334AIDGST, 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 OPA2334AIDGST part is unused and in its original packaging.
Return procedure for OPA2334AIDGST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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