My Inquiry
My Account
Texas Instruments OPA341NA/3K
- Part No.:
- OPA341NA/3K
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
OPA341NA/3K.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,609
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA341NA/3K from Texas Instruments is a single-channel, rail-to-rail input/output CMOS operational amplifier with shutdown control, optimized for low-voltage (2.7V–5.5V), single-supply operation. It delivers 5.5MHz gain-bandwidth, 6V/µs slew rate, and 750µA quiescent current per channel, enabling high-fidelity signal conditioning in portable data acquisition systems driving sampling ADCs.
For engineers reviewing the OPA341NA/3K datasheet, OPA341NA/3K pinout, OPA341NA/3K application, or OPA341NA/3K equivalent, this device is selected for precision sensor biasing, low-power active filtering, and rail-to-rail I/V conversion at DAC outputs-where supply headroom is constrained and dynamic range must be maximized without sacrificing speed or shutdown efficiency.
Technical Context
The OPA341NA/3K uses a complementary CMOS input stage (N- and P-channel differential pairs) to achieve rail-to-rail input common-mode range extending 300mV beyond both supply rails, with transition-region behavior documented across temperature and process variation. Its class AB output stage enables <5mV output swing to rails under 100kΩ load, maintaining >100dB open-loop gain.
Shutdown functionality is implemented via a CMOS-compatible enable pin (SD), with 1µs turn-off and 3µs turn-on times, reducing quiescent current to 10nA while preserving fast settling (1µs to 0.1%) and low THD+N (0.0007% at 1kHz). The device is unity-gain stable and specified over –55°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5.5MHz - supports stable closed-loop gain ≥10 at 500kHz for anti-aliasing filter design |
| Slew Rate | 6V/µs - enables clean 2V-step response in ≤1µs for ADC driver applications |
| Input Offset Voltage | ±2mV (typ), ±6mV (max) - ensures <1LSB error when buffering 12-bit ADC inputs with 5V full-scale |
| Quiescent Current | 0.75mA (typ) at 5V - allows battery-powered operation with >100-hour runtime in 10µA-average systems |
| Output Swing to Rail | 1mV (typ) at 100kΩ - maximizes usable dynamic range in 3.3V or lower single-supply systems |
| Shutdown Current | 10nA (typ) - reduces system standby power by >99% versus active mode |
| Common-Mode Rejection | 76dB (min) - suppresses supply noise coupling in high-gain sensor interfaces |
Pinout & Package
SOT-23-6 (DBV) surface-mount package, 3.0mm × 1.7mm footprint, 1.3mm height, moisture sensitivity level 2 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V–) | Negative supply / ground reference | Return path for all internal bias currents; must be low-impedance for PSRR integrity |
| 2 (+In) | Non-inverting input | Differential input node with 10¹³Ω || 6pF impedance; accepts signals up to V– – 0.3V and V+ + 0.3V |
| 3 (–In) | Inverting input | Differential input node with identical impedance and voltage range as +In |
| 4 (Out) | Amplifier output | Class AB stage capable of sourcing/sinking ±50mA; swings within 1mV of rails into 100kΩ |
| 5 (SD) | Shutdown enable input | CMOS logic input: <(V–)+0.8V = shutdown (10nA IQ); >(V–)+2V = active (0.75mA IQ) |
| 6 (V+) | Positive supply | Accepts 2.5V–5.5V; bypassing with 0.01µF ceramic capacitor required for stability |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal utilization in 2.7V systems-no level-shifting circuitry needed for ADC/DAC interfacing |
| Power shutdown mode | Reduces supply current from 750µA to 10nA, supporting duty-cycled sensing architectures with µA-level average power |
| 5.5MHz bandwidth at low IQ | Delivers audio-band fidelity and fast settling without compromising battery life in portable instrumentation |
| Microsize SOT-23-6 package | Minimizes PCB area in space-constrained designs such as wearable sensors and handheld test equipment |
| Specified from –55°C to +125°C | Validates performance in automotive engine control, industrial process monitoring, and downhole sensing environments |
Applications
| Sensor Biasing | Signal Conditioning |
|---|---|
Use Scenario: Providing precise, low-drift bias voltage to resistive bridge sensors in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Precision voltage follower with rail-to-rail output swing, delivering stable 1.65V bias from 3.3V supply while rejecting supply ripple. Use Value: Eliminates external voltage dividers and op-amp buffers, reducing component count and thermal drift errors in sub-10µV offset requirements. |
Use Scenario: Amplifying and filtering weak thermocouple outputs before digitization in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Low-noise, single-supply inverting amplifier (G = –10) with integrated RC anti-aliasing network at output. Use Value: Achieves 0.0007% THD+N at 1kHz and settles to 0.1% in 1µs-preserving resolution of 16-bit ADCs without post-processing correction. |
| Data Acquisition | Active Filters |
Use Scenario: Driving the sampling input of ADS7816 12-bit SAR ADC in portable medical ECG front-ends. IC Role / Device Role / Timing Role: Unity-gain buffer with synchronized shutdown control tied to ADC's CS/SHDN pin for power-gated sampling cycles. Use Value: Reduces total system current by >99% during idle periods while ensuring <1.6µs amplifier enable delay aligns with ADC acquisition timing. |
Use Scenario: Implementing second-order low-pass filtering in speech-band audio paths for voice-controlled IoT devices. IC Role / Device Role / Timing Role: Dual-stage active filter using OPA341NA/3K in Sallen-Key topology with rail-to-rail output swing up to 3.3Vpp. Use Value: Maintains flat group delay and <0.1dB passband ripple from DC to 2.4kHz without clipping, even with 3.3V supply constraints. |
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 bandwidth (5.5MHz), slew rate (6V/µs), and quiescent current (750µA) | Preferred where continuous operation is required and PCB layout cannot accommodate SD pin routing | Select OPA343UA/2K5 only if shutdown capability is unnecessary and SO-8 package is acceptable |
| MCP6001T-E/OT | Lower bandwidth (1MHz), slower slew rate (0.6V/µs), but lower quiescent current (100µA); same SOT-23-6 package | Better suited for ultra-low-power sensor amplification where speed is secondary to battery longevity | Choose MCP6001T-E/OT when system duty cycle is <0.1% and 1MHz bandwidth suffices |
Compared with OPA341NA/3K, OPA343UA/2K5 removes shutdown overhead but sacrifices power-gating flexibility, while MCP6001T-E/OT trades speed for 7.5× lower IQ-making OPA341NA/3K optimal for time-critical, intermittently powered signal chains requiring both precision and efficiency.
Availability
OPA341NA/3K is available at Aetrix Electronics and suitable for sensor biasing, portable data acquisition, and active filtering applications requiring stable component supply, guaranteed tape-and-reel packaging (3000 units/reel), and extended temperature qualification (–55°C to +125°C).
Supply support for OPA341NA/3K 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 OPA341NA/3K belongs to TI's microAmplifier™ series, designed specifically for miniature, single-supply applications demanding rail-to-rail performance, fast settling, and intelligent power management in portable and space-constrained systems.
FAQ
What is the maximum operating supply voltage for the OPA341NA/3K?
The OPA341NA/3K has an absolute maximum supply voltage of 6.0V between V+ and V–. Its specified operating range is 2.7V to 5.5V, though it functions down to 2.5V. Exceeding 6.0V risks permanent damage per the Absolute Maximum Ratings table in the SBOS202A datasheet. Always observe proper decoupling with 0.01µF ceramic capacitors on V+ and V– pins.
Does the OPA341NA/3K support rail-to-rail input with a 3.3V supply?
Yes, the OPA341NA/3K supports rail-to-rail input with a 3.3V supply: its input common-mode voltage range extends from (V–) – 0.3V to (V+) + 0.3V, meaning it accepts signals from –0.3V to +3.6V. This is enabled by its complementary N/P-channel input stage, allowing full utilization of the input range without external level-shifting circuitry.
How does the shutdown pin (SD) of the OPA341NA/3K behave electrically?
The SD pin of the OPA341NA/3K is a CMOS-compatible digital input: asserting voltage below (V–) + 0.8V places the amplifier in shutdown (IQ ≈ 10nA), while voltage above (V–) + 2V activates normal operation (IQ ≈ 750µA). Transition occurs between these thresholds; no pull-up or pull-down resistor is required, but clean logic edges ensure reliable 1µs turn-off and 3µs turn-on timing.
Can the OPA341NA/3K drive a 600Ω load effectively?
Yes, the OPA341NA/3K's class AB output stage is explicitly rated to drive 600Ω loads connected anywhere between V+ and ground. Typical output swing into 600Ω remains within ~40mV of the rails at room temperature, and short-circuit current is ±50mA-providing sufficient headroom for line-driver and audio-output applications without external buffering.
What is the typical input bias current of the OPA341NA/3K, and how does it vary with temperature?
The OPA341NA/3K exhibits a typical input bias current of ±0.6pA at +25°C, rising to ±2000pA at +125°C per the Electrical Characteristics table. This ultra-low IB enables high-impedance sensor interfaces (e.g., pH electrodes, photodiode transimpedance stages) with minimal offset drift, especially when operated below 85°C where IB remains <10pA.
OPA341NA/3K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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/3K FAQ
1.How can I place an order for OPA341NA/3K through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA341NA/3K 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/3K reliable?
The price and inventory of OPA341NA/3K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA341NA/3K is usually 5 days.
3.What payment methods are accepted for OPA341NA/3K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA341NA/3K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA341NA/3K?
OPA341NA/3K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA341NA/3K 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/3K?
For technical support, including OPA341NA/3K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA341NA/3K requirements.
6.How does Aetrix verify that OPA341NA/3K is sourced from the original manufacturer or authorized distributors?
All OPA341NA/3K 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/3K meets industry standards.
7.What is the process for return or replacement of OPA341NA/3K?
All OPA341NA/3K units undergo pre-shipment inspection (PSI). If there is an issue with OPA341NA/3K, 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/3K part is unused and in its original packaging.
Return procedure for OPA341NA/3K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA341NA/3K Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
