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Texas Instruments TL343IDBVTG4
- Part No.:
- TL343IDBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TL343IDBVTG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,156
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Product details
Overview
TL343IDBVTG4 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 TL343IDBVTG4 datasheet, TL343IDBVTG4 pinout, TL343IDBVTG4 application, or TL343IDBVTG4 equivalent, key selection considerations include its 10 mV max input offset voltage over −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 enabling stable unity-gain configurations without external components.
Technical Context
The TL343IDBVTG4 implements a classic bipolar-input op-amp architecture with a true differential pair input stage and Class AB push-pull output stage. Its input bias current is −200 nA to −800 nA over temperature, and input common-mode range extends from VCC− to (VCC+ − 2 V), supporting ground-referenced inputs in single-supply systems.
Internal frequency compensation ensures unconditional stability at unity gain, while short-circuit protection limits output current to ±55 mA. The device achieves 70 dB minimum CMRR and 15 V/mV minimum large-signal voltage gain across its full operating temperature range of −40°C to 125°C.
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 interface with 3.3 V, 5 V, and 24 V industrial rails |
| Input Offset Voltage | 12 mV max over −40°C to 125°C - sets worst-case DC error in precision gain stages without trimming |
| Unity-Gain Bandwidth | 1 MHz typical at ±15 V - supports stable closed-loop operation up to ~100 kHz with moderate gain |
| Slew Rate | 1 V/µs typical - limits full-power bandwidth to ~160 kHz for 10 Vpp output |
| Output Swing | ±10 V into 2 kΩ at ±15 V - delivers usable dynamic range within 1.5 V of positive rail and to negative rail |
| Input Bias Current | −800 nA max over full temperature range - minimizes voltage error across high-impedance source networks |
| Common-Mode Input Range | VCC− to (VCC+ − 2 V) - allows input 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, 0.95 mm pin pitch, gull-wing leads, moisture sensitivity level 1, RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | Accepts feedback network connection; common node for virtual ground in inverting amplifier configurations |
| 2 (IN+) | Non-inverting input | Reference point for differential input; tied to ground or reference voltage in single-supply sensor interfaces |
| 3 (VCC−/GND) | Negative supply or ground | Return path for supply current and output stage; serves as signal reference in single-supply operation |
| 4 (VCC+) | Positive supply | Primary power rail; must be ≥3 V above VCC− for valid operation per absolute maximum ratings |
| 5 (OUT) | Amplified output | Drives resistive or capacitive loads up to 2 kΩ; short-circuit protected to ±55 mA |
Key Features
| Feature | Design Value |
|---|---|
| True differential input stage | Enables balanced signal acquisition with 70 dB CMRR, rejecting noise coupled equally to both inputs |
| Class AB output stage | Delivers low crossover distortion (1% at 10 kHz) and ±55 mA short-circuit current capability |
| Internal frequency compensation | Guarantees stability in unity-gain follower and inverting configurations without external compensation components |
| Rail-to-rail input common-mode range | Supports ground-referenced inputs in 3 V–30 V single-supply systems without level-shifting circuitry |
| Low input bias current | −800 nA max over temperature preserves accuracy in high-impedance transducer interfaces (e.g., thermistors, photodiodes) |
Applications
| Industrial Sensor Signal Conditioning | Single-Supply Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying low-level outputs from RTDs, strain gauges, or pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Precision DC-coupled gain block with adjustable offset correction via IN− pin. Use Value: 12 mV max input offset and −800 nA max input bias current minimize drift-induced measurement error over −40°C to 125°C. | Use Scenario: Front-end amplification in portable multimeters or handheld data loggers powered by 3.7 V Li-ion cells. IC Role / Device Role / Timing Role: Single-supply op-amp configured as non-inverting amplifier with rail-to-rail input support. Use Value: Operation down to 3 V supply enables full functionality across battery discharge curve without brownout shutdown. |
| DC Motor Current Sensing | Legacy Analog Control Loop Interface |
Use Scenario: Isolation-free current sensing across shunt resistors in 24 V DC motor drives. IC Role / Device Role / Timing Role: High-side or low-side current-to-voltage converter with fast transient response. Use Value: 1 V/µs slew rate and 1 MHz bandwidth support accurate reconstruction of PWM-modulated current waveforms. | Use Scenario: Interfacing modern microcontrollers to legacy 0–10 V analog control inputs in HVAC or process controllers. IC Role / Device Role / Timing Role: Level-shifting buffer translating 3.3 V DAC outputs to industrial 0–10 V standards. Use Value: Output swing to VCC− and within 1.5 V of VCC+ ensures full 10 V compliance with 12 V supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM321IDBVR | Lower input offset (7 mV max), higher unity-gain bandwidth (1.2 MHz), but only rated to 85°C ambient | Not qualified for extended industrial temperature range (−40°C to 125°C) | Select when ambient temperature stays ≤85°C and tighter DC accuracy is required |
| TLV2461CDBVR | Rail-to-rail input/output, lower supply current (600 µA typ), but reduced output drive (±15 mA) | Insufficient short-circuit current for driving heavy loads or long cables | Select when ultra-low power and full rail-to-rail swing are critical, and load < 10 kΩ |
Compared with LM321IDBVR and TLV2461CDBVR, the TL343IDBVTG4 provides guaranteed −40°C to 125°C operation, robust ±55 mA short-circuit protection, and proven stability in legacy 741-compatible designs - making it suitable for harsh-environment industrial control where reliability outweighs marginal speed or power advantages.
Availability
TL343IDBVTG4 is available at Aetrix Electronics and suitable for industrial sensor interfaces, single-supply instrumentation, and DC motor current sensing requiring stable component supply across extended temperature ranges.
Supply support for TL343IDBVTG4 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 company headquartered in Dallas, Texas, specializing in analog ICs, embedded processors, and digital signal processing technologies for industrial, automotive, and consumer markets.
The TL343 belongs to TI's legacy general-purpose op-amp product line, designed for cost-sensitive, high-reliability industrial applications where wide supply range, temperature resilience, and proven 741-compatible behavior are prioritized over ultra-low power or rail-to-rail output.
FAQ
What is the maximum operating temperature range for TL343IDBVTG4?
The TL343IDBVTG4 is specified for operation from −40°C to +125°C ambient temperature. This extended industrial temperature range is confirmed in the "recommended operating conditions" table of the SLOS250G datasheet and applies to all electrical characteristics unless otherwise noted. The device's thermal design supports reliable performance in enclosed control cabinets and outdoor equipment enclosures without forced cooling.
Does TL343IDBVTG4 support true single-supply operation with input signals at ground potential?
Yes, the TL343IDBVTG4 supports true single-supply operation with input signals referenced to ground. Its common-mode input voltage range extends to VCC− (i.e., ground in single-supply mode), as stated in the "electrical characteristics" table under VICR. This allows direct connection of ground-referenced sensors like thermocouples or bridge transducers without level-shifting circuitry - a key advantage over older op-amps with limited input range.
What is the output voltage swing capability of TL343IDBVTG4 at 5 V supply?
At VCC+ = 5 V and VCC− = 0 V, the TL343IDBVTG4 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 5 V single-supply operation. This corresponds to a swing from near ground (0 V) up to ~3.4 V - sufficient for interfacing with 3.3 V logic or ADC reference levels while maintaining >1 V headroom from the positive rail.
Is TL343IDBVTG4 pin-compatible with other SOT-23-5 op-amps like LM321 or TLV2461?
No, TL343IDBVTG4 is not pin-compatible with LM321IDBVR or TLV2461CDBVR. While all three use the SOT-23-5 (DBV) package, their pin assignments differ: TL343IDBVTG4 uses Pin 1=IN−, Pin 2=IN+, Pin 3=GND, Pin 4=VCC+, Pin 5=OUT; LM321 uses Pin 1=OUT, Pin 2=IN−, Pin 3=IN+, Pin 4=GND, Pin 5=VCC+; TLV2461 uses Pin 1=OUT, Pin 2=IN−, Pin 3=IN+, Pin 4=VCC−, Pin 5=VCC+. PCB layout must match TL343IDBVTG4's specific pinout.
What packaging and reel information applies to TL343IDBVTG4?
TL343IDBVTG4 is supplied in SOT-23-5 (DBV) package with RoHS-compliant NiPdAu lead finish, moisture sensitivity level 1 (260°C peak reflow), and tape-and-reel packaging. Per TI's packaging addendum, the orderable part TL343IDBVR ships in reels of 3000 units, 8.4 mm tape width, 4.0 mm pitch, and Q3 quadrant pin-1 orientation. TL343IDBVTG4 shares identical DBV mechanical dimensions and reel specifications.
TL343IDBVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
TL343IDBVTG4 FAQ
1.How can I place an order for TL343IDBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL343IDBVTG4 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 TL343IDBVTG4 reliable?
The price and inventory of TL343IDBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL343IDBVTG4 is usually 5 days.
3.What payment methods are accepted for TL343IDBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL343IDBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL343IDBVTG4?
TL343IDBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL343IDBVTG4 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 TL343IDBVTG4?
For technical support, including TL343IDBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL343IDBVTG4 requirements.
6.How does Aetrix verify that TL343IDBVTG4 is sourced from the original manufacturer or authorized distributors?
All TL343IDBVTG4 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 TL343IDBVTG4 meets industry standards.
7.What is the process for return or replacement of TL343IDBVTG4?
All TL343IDBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TL343IDBVTG4, 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 TL343IDBVTG4 part is unused and in its original packaging.
Return procedure for TL343IDBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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