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Texas Instruments TL343IDBVR
- Part No.:
- TL343IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TL343IDBVR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:13,677
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Product details
Overview
TL343IDBVR from Texas Instruments is a single general-purpose operational amplifier with true differential input, Class AB output stage, and rail-to-rail input common-mode range extending to the negative supply. It operates from 3 V to 30 V single supply or ±1.5 V to ±15 V dual supply, delivers ±10 V output swing into 2 kΩ at ±15 V, and features 1 MHz unity-gain bandwidth and 1 V/µs slew rate - used in industrial sensor signal conditioning and low-voltage analog front-ends.
For engineers reviewing the TL343IDBVR datasheet, TL343IDBVR pinout, TL343IDBVR application, or TL343IDBVR equivalent, key selection considerations include its 10 mV max input offset voltage at −40°C to 125°C, SOT-23-5 package compatibility with space-constrained PCB layouts, single-supply operation down to 3 V, and internal frequency compensation eliminating external compensation components.
Technical Context
The TL343IDBVR implements a classic bipolar-input op-amp architecture with a true differential input stage and Class AB push-pull output stage, enabling stable operation without external compensation. Its input common-mode range includes the negative supply rail, and output swings from VCC− to VCC+ − 1.5 V under load.
Designed for wide-supply flexibility, it supports both single-ended (3–30 V) and split-supply (±1.5 to ±15 V) configurations while maintaining 70 dB minimum CMRR and 15 V/mV large-signal voltage gain across temperature. Internal short-circuit protection and thermal shutdown enhance robustness in industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V single supply or ±1.5 V to ±15 V dual supply - enables direct interfacing with 3.3 V, 5 V, and 24 V industrial systems without level-shifting. |
| Input Offset Voltage | Max 10 mV at 25°C, 12 mV over full −40°C to 125°C range - sets baseline DC error in precision amplification stages. |
| Unity-Gain Bandwidth | 1 MHz at VCC± = ±15 V - supports stable closed-loop operation up to ~100 kHz with moderate gain. |
| Slew Rate | 1 V/µs - limits maximum undistorted sinusoidal output frequency to ~160 kHz at 10 VPP. |
| Output Swing | ±10 V into 2 kΩ at ±15 V supply - provides usable dynamic range for analog signal processing before clipping. |
| Input Bias Current | −200 nA to −800 nA over temperature - requires low-impedance source paths to minimize offset drift in high-Z sensor interfaces. |
| Common-Mode Input Range | VCC− to VCC+ − 2 V - allows direct sensing of signals referenced to ground in single-supply configurations. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.45 mm body, surface-mount, moisture sensitivity level 1, lead-free (NiPdAu), tape-and-reel packaging (3000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | Accepts differential input signal referenced to VCC−/GND; common-mode range extends to negative rail. |
| 2 (VCC−/GND) | Negative supply / ground reference | Serves as power return and signal reference; required for single-supply operation with ground-referenced inputs. |
| 3 (IN−) | Inverting input | Differential complement to IN+; supports standard inverting/non-inverting amplifier topologies. |
| 4 (VCC+) | Positive supply | Accepts 3–30 V single supply or positive rail of dual supply; must be ≥3 V above VCC−. |
| 5 (OUT) | Amplified output | Class AB stage drives loads down to 2 kΩ; swings from VCC− to VCC+ − 1.5 V with ≤1% crossover distortion. |
Key Features
| Feature | Design Value |
|---|---|
| True differential input stage | Enables precise difference amplification with 70–90 dB CMRR, critical for rejecting noise in sensor bridges and current shunts. |
| Internal frequency compensation | Guarantees stability in unity-gain and inverting configurations without external capacitors - reduces BOM count and layout complexity. |
| Class AB output stage | Delivers low crossover distortion (<1%) and ±55 mA short-circuit current, supporting moderate drive capability without external buffers. |
| Rail-to-rail input common-mode range | Accepts input signals at or below VCC−, enabling ground-referenced signal acquisition in single-supply 3.3 V systems. |
| Short-circuit protection | Prevents latch-up or permanent damage during output faults - improves reliability in unattended industrial monitoring applications. |
Applications
| Industrial Temperature Sensor Interface | Low-Voltage Battery-Powered Signal Conditioning |
|---|---|
Use Scenario: Amplifying millivolt-level outputs from RTDs or thermocouples in factory automation PLC modules. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with low input bias current to minimize self-heating errors in high-impedance sensor elements. Use Value: 10 mV max input offset and −200 nA input bias current ensure <0.5°C measurement uncertainty in 0–100°C range with 1 kΩ RTD. | Use Scenario: Signal amplification in portable gas detectors powered by 3.7 V Li-ion batteries. IC Role / Device Role / Timing Role: Single-supply op-amp providing rail-to-rail input and 3 V compatible operation without charge pumps or LDOs. Use Value: Operates down to 3 V supply while delivering ±1.5 V output swing - extends usable battery life by avoiding premature brownout shutdown. |
| DC Motor Current Sensing | Programmable Logic Controller Analog Input Module |
Use Scenario: Amplifying voltage across shunt resistors in 12–24 V DC motor control circuits. IC Role / Device Role / Timing Role: High-common-mode rejection amplifier with 70 dB CMRR rejecting PWM switching noise on motor phase lines. Use Value: Input common-mode range to VCC− allows direct connection to low-side shunt without level shifters - simplifies PCB routing and reduces component count. | Use Scenario: Front-end signal conditioning for 4–20 mA loop receivers in industrial control cabinets. IC Role / Device Role / Timing Role: Precision transimpedance and buffer stage converting current to voltage with stable DC accuracy over temperature. Use Value: 12 mV max input offset over −40°C to 125°C ensures <0.1% full-scale error in 16-bit ADC systems without per-unit calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM358DR | Lower unity-gain bandwidth (1 MHz vs 700 kHz), higher input offset (7 mV typ), no rail-to-rail input. | Less suitable for precision low-voltage sensor interfaces requiring ground-sensing capability. | Choose LM358DR only when cost is primary constraint and input common-mode range beyond VCC− is unnecessary. |
| TLV2461CDBVR | Rail-to-rail input/output, lower input offset (1.6 mV max), but limited 36 V max supply and higher quiescent current (550 µA vs 700 µA). | Better for ultra-low-offset designs but incompatible with 30 V single-supply industrial rails. | Choose TLV2461CDBVR where sub-millivolt offset is mandatory and supply stays ≤16 V. |
Compared with LM358DR and TLV2461CDBVR, the TL343IDBVR uniquely balances wide supply range (3–30 V), rail-to-rail input, and industrial temperature rating (−40°C to 125°C) without sacrificing stability or requiring external compensation - making it optimal for ruggedized analog signal chains.
Availability
TL343IDBVR is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable logic controller analog input modules, and DC motor current sensing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL343IDBVR 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, embedded processing, and digital signal technologies, with decades of experience in high-reliability industrial and automotive IC design.
The TL343 belongs to TI's legacy general-purpose op-amp product line, engineered for robust performance in harsh industrial environments where wide supply range, thermal stability, and internal compensation are essential.
FAQ
What is the maximum operating temperature range for TL343IDBVR?
The TL343IDBVR is rated for operation from −40°C to +125°C ambient temperature, validated per JEDEC JESD22-A108 and qualified for industrial applications. This range is confirmed in the "recommended operating conditions" table of the SLOS250G datasheet, and the device maintains specified electrical characteristics-including 12 mV max input offset voltage and 15 V/mV minimum large-signal gain-across this full interval. The TL343IDBVR uses TI's DBV package with MSL Level-1 rating, supporting standard reflow profiles without preconditioning.
Does TL343IDBVR support true single-supply operation with input signals at ground potential?
Yes, the TL343IDBVR supports true single-supply operation with input signals referenced to ground. Its common-mode input voltage range extends to VCC− (pin 2), which is tied to GND in single-supply configurations. As stated in the datasheet, VICR = VCC− to (VCC+ − 2 V), allowing IN+ and IN− to accept 0 V inputs when VCC− = 0 V. This eliminates the need for level-shifting circuitry in applications such as 3.3 V microcontroller-based sensor amplifiers.
What is the output voltage swing capability of TL343IDBVR at 5 V single supply?
At 5 V single supply (VCC+ = 5 V, VCC− = 0 V), the TL343IDBVR delivers a peak output voltage swing of 3.3 V to 3.5 V into a 10 kΩ load, as specified in the "electrical characteristics" table for VCC+ = 5 V. This corresponds to a swing from near 0 V (ground) up to ~3.4 V - sufficient for driving 12-bit SAR ADCs with 3.3 V reference or interfacing directly with 3.3 V logic I/O. Output swing degrades slightly under heavier loads (e.g., 2 kΩ), but remains functional for most low-speed analog signal paths.
Is TL343IDBVR internally compensated, and does it require external compensation components?
Yes, the TL343IDBVR is fully internally compensated, as explicitly stated in the datasheet's "features" list and confirmed by its stable unity-gain bandwidth (1 MHz) and 44° phase margin at CL = 200 pF. No external compensation capacitor or resistor network is required for stable operation in standard inverting, non-inverting, or voltage-follower configurations. This simplifies design, reduces board area, and improves manufacturing yield compared to decompensated op-amps like the TL071 or OPA2134.
How does the input bias current of TL343IDBVR behave across temperature and supply voltage?
The TL343IDBVR exhibits input bias current ranging from −200 nA to −800 nA over −40°C to +125°C, with typical values of −500 nA at 25°C. As shown in Figure 2 of the SLOS250G datasheet, IB increases exponentially with temperature - approximately doubling every 10°C rise above 25°C. Supply voltage has minimal effect: Figure 3 shows IB remains stable between ±2.5 V and ±15 V dual supply. Designers using high-impedance sources (>100 kΩ) must account for this bipolar bias current to avoid DC offset errors exceeding 80 mV.
TL343IDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 200 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 700µA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TL343IDBVR FAQ
1.How can I place an order for TL343IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL343IDBVR 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 TL343IDBVR reliable?
The price and inventory of TL343IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL343IDBVR is usually 5 days.
3.What payment methods are accepted for TL343IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL343IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL343IDBVR?
TL343IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL343IDBVR 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 TL343IDBVR?
For technical support, including TL343IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL343IDBVR requirements.
6.How does Aetrix verify that TL343IDBVR is sourced from the original manufacturer or authorized distributors?
All TL343IDBVR 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 TL343IDBVR meets industry standards.
7.What is the process for return or replacement of TL343IDBVR?
All TL343IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with TL343IDBVR, 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 TL343IDBVR part is unused and in its original packaging.
Return procedure for TL343IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL343IDBVR Tags
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