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Texas Instruments OPA341NA/250G4
- Part No.:
- OPA341NA/250G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
OPA341NA/250G4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,520
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Product details
Overview
OPA341NA/250G4 from Texas Instruments is a single-supply, rail-to-rail input/output CMOS operational amplifier with shutdown control, optimized for low-voltage (2.7V–5.5V) portable and data acquisition systems. It delivers 5.5MHz gain-bandwidth, 6V/µs slew rate, 750µA quiescent current per channel, and output swing within 1mV of rails under 100kΩ load - enabling high-fidelity signal conditioning at the front end of 12-bit sampling ADCs like ADS7816.
For engineers reviewing the OPA341NA/250G4 datasheet, OPA341NA/250G4 pinout, OPA341NA/250G4 application, or OPA341NA/250G4 equivalent, key selection criteria include rail-to-rail I/O performance at 2.7V supply, sub-1µs 0.1% settling time, shutdown current ≤10nA, and SOT23-6 footprint compatibility with space-constrained sensor interface and battery-powered instrumentation designs.
Technical Context
The OPA341NA/250G4 employs a complementary CMOS input stage-parallel N-channel and P-channel differential pairs-to achieve rail-to-rail input common-mode range extending 300mV beyond V+ and V−. Its class AB output stage enables true rail-to-rail output swing with <5mV headroom into 100kΩ loads.
It integrates a CMOS-compatible shutdown pin (SD) that reduces supply current to ≤10nA while maintaining fast enable/disable timing (tON = 3µs, tOFF = 1µs). The device is unity-gain stable and drives capacitive loads up to 1000pF in unity-gain configuration without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5.5MHz - supports closed-loop bandwidth >1MHz at G=5, suitable for anti-aliasing filters ahead of 100kHz-sampling ADCs. |
| Slew Rate | 6V/µs - ensures distortion-free reproduction of 1VPP signals up to ~950kHz (full-power bandwidth). |
| Quiescent Current | 0.75mA per amplifier at 5V - enables multi-hour operation on coin-cell batteries in intermittent-sampling systems. |
| Input Offset Voltage | ±2mV (typ), ±6mV (max) - sufficient for 12-bit accuracy (LSB ≈ 1.2mV at 5V full-scale) without trimming. |
| Output Swing | Within 1mV of rails (100kΩ load) - maximizes dynamic range in low-voltage, single-supply data loggers. |
| Shutdown Current | ≤10nA - reduces system standby power by >99.9% versus active mode, critical for energy-harvesting nodes. |
| Common-Mode Range | (V−) − 0.3V to (V+) + 0.3V - accepts inputs beyond supply rails, simplifying biasing of AC-coupled sensors. |
Pinout & Package
SOT23-6 (DBV) surface-mount package: 2.9mm × 1.6mm × 1.15mm body, 0.95mm pitch, moisture sensitivity level 2 (260°C peak reflow).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V−) | Negative supply / ground reference | Return path for bias current and output sink; must be decoupled with 0.01µF ceramic capacitor. |
| 2 (SD) | Shutdown control input | CMOS-compatible logic input: < (V−)+0.8V = disable (IQ ≤10nA); > (V−)+2V = enable (normal operation). |
| 3 (−In) | Inverting input terminal | Differential input node; high-impedance (1013Ω || 6pF) - minimal loading on precision sensor bridges or DAC outputs. |
| 4 (V+) | Positive supply | Single-supply rail (2.7V–5.5V); requires local 0.01µF bypass to V− for stability. |
| 5 (+In) | Non-inverting input terminal | Differential input node; rail-to-rail common-mode range enables direct connection to unbuffered thermistor or RTD dividers. |
| 6 (Out) | Amplifier output | Class AB stage capable of sourcing/sinking ±50mA; drives 600Ω loads and 1000pF capacitive loads in unity-gain configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 2.7V–5.5V supply range - no level-shifting required for interfacing with 3.3V microcontrollers or 12-bit ADCs. |
| Power shutdown mode | Reduces IQ from 750µA to ≤10nA, cutting idle power by 5 orders of magnitude for duty-cycled sensor nodes. |
| Low input bias current | ±0.6pA (typ) - preserves accuracy in high-impedance transducer interfaces (e.g., pH electrodes, photodiode TIA configurations). |
| Unity-gain stability | Operates stably at G=1 without external compensation - simplifies design of anti-aliasing filters and buffer stages. |
| Wide temperature range | Specified from −55°C to +125°C - qualified for automotive engine control, industrial process monitoring, and downhole sensing. |
Applications
| Sensor Biasing | Signal Conditioning |
|---|---|
Use Scenario: Providing precise DC bias voltage to resistive temperature detectors (RTDs) or strain gauges in portable environmental monitors. IC Role / Device Role / Timing Role: Precision voltage follower with rail-to-rail I/O, delivering stable excitation current while rejecting supply ripple. Use Value: Input offset voltage ≤±6mV and CMRR ≥76dB ensure <0.1°C error in 100Ω PT100 measurements over −40°C to +85°C. | Use Scenario: Amplifying and filtering low-level analog outputs from MEMS accelerometers before digitization. IC Role / Device Role / Timing Role: Single-supply non-inverting amplifier with integrated RC anti-aliasing network driving ADS7816 12-bit ADC. Use Value: 0.1% settling in 1µs and 5.5MHz GBW support accurate capture of 100kHz vibration spectra with minimal phase lag. |
| Data Acquisition | Active Filters |
Use Scenario: Buffering and driving the switched-capacitor input of sampling ADCs in battery-powered data loggers. IC Role / Device Role / Timing Role: High-speed, low-power op-amp isolating ADC input capacitance and charge injection transients. Use Value: Output swing within 1mV of rails preserves >99.9% of 12-bit dynamic range at 3.3V supply, maximizing SNR. | Use Scenario: Implementing 2nd-order bandpass filter for speech signal conditioning in voice-controlled IoT edge devices. IC Role / Device Role / Timing Role: Transimpedance and gain-stage amplifier in active filter topology centered at 1.6kHz with 2.2kHz bandwidth. Use Value: THD+N ≤0.0007% at 1kHz and 3VPP ensures clean audio passband without harmonic distortion artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail, low-power operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA343UA/2K5 | No shutdown function; otherwise identical specs (5.5MHz GBW, 6V/µs SR, 750µA IQ). | Preferred where continuous operation is required and PCB space allows SO-8; lacks power-gating capability. | Select OPA343UA when shutdown is unnecessary and SO-8 packaging is acceptable for thermal or layout reasons. |
| MCP6001T-E/OT | Lower bandwidth (1MHz), higher IQ (100µA), no rail-to-rail input (CMVR = V− to V+−0.3V), SOT23-5 package (no SD pin). | Suitable for cost-sensitive, low-speed sensor buffers but cannot replace OPA341NA/250G4 in ADC driver or shutdown-critical roles. | Choose MCP6001T-E/OT only for non-critical DC-coupled amplification where 1MHz BW suffices and shutdown is omitted. |
Compared with OPA343UA and MCP6001T-E/OT, the OPA341NA/250G4 uniquely combines SOT23-6 footprint, rail-to-rail I/O, 5.5MHz bandwidth, and nanoscale shutdown current - making it irreplaceable in space-constrained, intermittently powered data acquisition nodes requiring maximum dynamic range and minimal standby leakage.
Availability
OPA341NA/250G4 is available at Aetrix Electronics and suitable for sensor biasing, portable data acquisition, and active filter design requiring stable component supply across industrial temperature ranges and long-lifecycle production programs.
Supply support for OPA341NA/250G4 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 op-amps and low-power signal chain solutions.
The OPA341 series belongs to TI's microAmplifier™ portfolio, designed specifically for miniature, single-supply, rail-to-rail applications in portable instrumentation, sensor interfaces, and battery-operated data acquisition systems.
FAQ
What is the operating supply voltage range for the OPA341NA/250G4?
The OPA341NA/250G4 operates from a single supply of 2.5V to 5.5V, with full specifications guaranteed from 2.7V to 5.5V across −55°C to +125°C. This wide range supports direct integration with 3.3V and 5V microcontrollers and enables reliable function in brown-out conditions down to 2.5V - a key advantage in energy-harvesting and coin-cell-powered systems using the OPA341NA/250G4.
How does the shutdown feature of the OPA341NA/250G4 work electrically?
The OPA341NA/250G4 shutdown pin (Pin 2) is a CMOS-compatible digital input: asserting voltage < (V−)+0.8V disables the amplifier, reducing quiescent current to ≤10nA; asserting > (V−)+2V enables normal operation with 750µA IQ. Transition times are tON = 3µs and tOFF = 1µs. This behavior is verified in the SBOS202A datasheet and applies directly to the OPA341NA/250G4 in its SOT23-6 package.
Can the OPA341NA/250G4 drive a 600Ω load effectively?
Yes, the OPA341NA/250G4 features a class AB output stage rated for ±50mA short-circuit current and explicitly characterized driving 600Ω loads in audio and instrumentation applications. Its rail-to-rail output swing remains within tens of millivolts of the supply rails even under 600Ω load, and THD+N is ≤0.0007% at 1kHz - confirming robust performance in line-driver and headphone-buffer roles using the OPA341NA/250G4.
What is the input common-mode voltage range of the OPA341NA/250G4?
The OPA341NA/250G4 has a rail-to-rail input common-mode range extending 300mV beyond both supply rails: (V−) − 0.3V to (V+) + 0.3V. This is achieved via parallel N- and P-channel input stages. Operation outside the transition region (near V+ − 1.3V) ensures full CMRR ≥76dB and PSRR ≥40µV/V - critical for accurate biasing of floating sensors when using the OPA341NA/250G4 in single-supply configurations.
Is the OPA341NA/250G4 unity-gain stable, and what capacitive load can it drive?
Yes, the OPA341NA/250G4 is unity-gain stable and can drive up to 1000pF in unity-gain configuration without external compensation, as confirmed in the "Small-Signal Overshoot vs Load Capacitance" plot of SBOS202A. For heavier loads, adding a 10Ω–20Ω series resistor at the output (Figure 4) suppresses ringing while introducing <0.2% gain error with 10kΩ parallel resistance - a validated technique for driving ADC input capacitance using the OPA341NA/250G4.
OPA341NA/250G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 6V/µs
- Gain Bandwidth Product:
- 5.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.6 pA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 750µA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
OPA341NA/250G4 FAQ
1.How can I place an order for OPA341NA/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA341NA/250G4 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 OPA341NA/250G4 reliable?
The price and inventory of OPA341NA/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA341NA/250G4 is usually 5 days.
3.What payment methods are accepted for OPA341NA/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA341NA/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA341NA/250G4?
OPA341NA/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA341NA/250G4 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 OPA341NA/250G4?
For technical support, including OPA341NA/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA341NA/250G4 requirements.
6.How does Aetrix verify that OPA341NA/250G4 is sourced from the original manufacturer or authorized distributors?
All OPA341NA/250G4 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 OPA341NA/250G4 meets industry standards.
7.What is the process for return or replacement of OPA341NA/250G4?
All OPA341NA/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA341NA/250G4, 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 OPA341NA/250G4 part is unused and in its original packaging.
Return procedure for OPA341NA/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA341NA/250G4 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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