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Texas Instruments TL343IDBVRG4
- Part No.:
- TL343IDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TL343IDBVRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,122
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Product details
Overview
TL343IDBVRG4 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 TL343IDBVRG4 datasheet, TL343IDBVRG4 pinout, TL343IDBVRG4 application, or TL343IDBVRG4 equivalent, key selection criteria include input offset voltage (max 12 mV over temperature), supply current (0.7–2.8 mA), thermal performance in SOT-23-5 package, and compatibility with single-supply 3–30 V systems requiring robust short-circuit protection and internal frequency compensation.
Technical Context
The TL343IDBVRG4 implements a classic bipolar-input op-amp architecture with a Class AB push-pull output stage enabling high-output current drive (±55 mA short-circuit) and low crossover distortion (1% at 10 kHz). Its true differential input stage supports common-mode voltage down to VCC−, and internal 5 pF compensation ensures stable unity-gain operation without external components.
Designed for wide-supply flexibility, it maintains functional specifications across −40°C to +125°C ambient, with input bias current ranging from −200 nA to −800 nA over temperature and supply voltage, and CMRR of 70–90 dB - making it suitable for precision DC-coupled amplification where supply headroom is constrained.
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 without level-shifting. |
| Input Offset Voltage | Max 12 mV over full temperature range - sets worst-case DC error in precision gain stages and sensor amplifiers. |
| Unity-Gain Bandwidth | 1 MHz at VCC± = ±15 V - supports stable closed-loop operation up to ~100 kHz with moderate gain (e.g., G = 10). |
| Slew Rate | 1 V/µs - limits large-signal response time; sufficient for <100 kHz sine-wave output at ±10 V swing. |
| Output Short-Circuit Current | ±55 mA - provides inherent fault tolerance in driver and transducer interface applications. |
| Common-Mode Input Range | VCC− to (VCC+ − 2 V) - allows direct sensing of signals referenced to ground in single-supply configurations. |
| Quiescent Supply Current | 0.7–2.8 mA - balances power efficiency and speed for battery-powered or thermally constrained designs. |
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 (3000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | High-impedance node accepting differential input signals; common-mode range extends to VCC−. |
| 2 (VCC−/GND) | Negative supply or ground reference | Return path for supply current and input/output bias; serves as signal reference in single-supply operation. |
| 3 (IN−) | Inverting input | Differential complement to IN+; supports feedback network connection for standard op-amp configurations. |
| 4 (VCC+) | Positive supply | Primary power rail; must be ≥3 V above VCC− for valid operation (min 3 V total supply differential). |
| 5 (OUT) | Amplified output | Class AB stage delivers ±10 V swing into 2 kΩ; short-circuit protected to ±55 mA. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation down to 3 V | Enables use in modern low-voltage embedded systems without dual-rail generation circuitry. |
| Internal frequency compensation | Guarantees stability in unity-gain follower and inverting configurations without external compensation components. |
| True differential input stage | Provides balanced noise rejection and accurate differential signal amplification without input offset drift from mismatch. |
| Short-circuit protection | Prevents device failure during output overload or accidental grounding, improving system reliability in field-deployed equipment. |
| Class AB output stage | Delivers low crossover distortion (1%) and higher output current capability than Class A alone, supporting active filter and driver loads. |
Applications
| Industrial Sensor Signal Conditioning | Low-Voltage Analog Front-End |
|---|---|
|
Use Scenario: Amplifying millivolt-level outputs from RTDs, thermocouples, or bridge-based pressure sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Precision DC-coupled non-inverting amplifier with gain set by external resistors; rejects common-mode noise on long sensor cables. Use Value: Input common-mode range to VCC− and max 12 mV offset enable accurate zero-reference measurement without level-shifting circuitry. |
Use Scenario: Buffering and scaling ADC inputs in portable instrumentation operating from 3.3 V or 5 V rails. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating high-impedance source from ADC sampling capacitor. Use Value: 1 V/µs slew rate and 1 MHz bandwidth support settling within 1 µs for 12-bit conversions at 1 MSPS sample rates. |
| DC Motor Current Sensing | Power Supply Error Amplifier |
|
Use Scenario: High-side or low-side current sensing in 12 V/24 V motor control H-bridges with isolated shunt feedback. IC Role / Device Role / Timing Role: Differential amplifier measuring shunt voltage drop; rejects PWM switching noise via CMRR ≥70 dB. Use Value: ±55 mA short-circuit output current safely drives optocoupler LED or comparator input under fault conditions. |
Use Scenario: Compensator in adjustable linear regulator feedback loop stabilizing output against load and line variations. IC Role / Device Role / Timing Role: Error amplifier comparing regulated output to reference; sets loop gain and phase margin. Use Value: Internal 5 pF compensation ensures ≥44° phase margin with typical Type II compensation networks, simplifying loop design. |
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), lower supply current (0.45 mA typ), but only 1.2 MHz GBW and no short-circuit rating specified. | Better DC accuracy and power efficiency, but reduced drive strength and unspecified fault tolerance. | Preferred when ultra-low quiescent current and tighter offset are critical, and output loading is light. |
| TLV2461IDBVR | Rail-to-rail output, 6.4 MHz GBW, 1.6 V/µs slew rate, but higher supply current (550 µA typ) and narrower supply range (2.7–6 V). | Superior AC performance and output swing in low-voltage systems, but incompatible with >6 V supplies. | Select when full rail-to-rail output and higher bandwidth are required in 3.3 V systems; not suitable for 12 V+ operation. |
Compared with LM321IDBVR and TLV2461IDBVR, the TL343IDBVRG4 offers broader supply voltage coverage (3–30 V), proven short-circuit robustness, and guaranteed stability without external compensation - making it the preferred choice for industrial analog signal paths where supply flexibility and ruggedness outweigh ultra-low-power or rail-to-rail output needs.
Availability
TL343IDBVRG4 is available at Aetrix Electronics and suitable for industrial sensor interfaces, low-voltage analog front-ends, and DC motor current sensing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL343IDBVRG4 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 heritage in precision op-amps and industrial-grade signal chain solutions.
The TL343 belongs to TI's legacy general-purpose op-amp product line, designed specifically for cost-sensitive, wide-supply industrial applications demanding reliability, ease of use, and compatibility with legacy µA741-based designs.
FAQ
What is the maximum supply voltage for TL343IDBVRG4 in single-supply operation?
The TL343IDBVRG4 supports single-supply operation from 3 V to 30 V. Absolute maximum ratings specify VCC+ ≤ 18 V and VCC− ≥ −18 V, with total supply differential limited to 36 V. Operation at 30 V single supply is within recommended conditions and verified in electrical characteristics tables.
Does TL343IDBVRG4 have rail-to-rail output capability?
No, the TL343IDBVRG4 does not provide rail-to-rail output. Its output swings from VCC− to VCC+ − 1.5 V under load (e.g., ±10 V into 2 kΩ at ±15 V supplies). This limitation is explicitly stated in the datasheet and confirmed in the "Peak output-voltage swing" specifications.
Is TL343IDBVRG4 pin-compatible with other SOT-23-5 op-amps like LM321IDBVR?
Yes, TL343IDBVRG4 uses the standard SOT-23-5 pinout (IN+, VCC−/GND, IN−, VCC+, OUT), matching LM321IDBVR and many TI single-op-amp variants. However, functional behavior differs - TL343IDBVRG4 has higher supply current, wider supply range, and explicit short-circuit protection not guaranteed in LM321IDBVR.
What is the input bias current specification for TL343IDBVRG4 over temperature?
The TL343IDBVRG4 exhibits input bias current from −200 nA to −800 nA over the full −40°C to +125°C operating range, with typical values of −200 nA at 25°C. This bipolar-input characteristic is confirmed in the "electrical characteristics" table and illustrated in Figure 2 of the datasheet.
Can TL343IDBVRG4 be used in dual-supply ±5 V configurations?
Yes, TL343IDBVRG4 is fully qualified for dual-supply operation with VCC+ = +5 V and VCC− = −5 V (10 V total differential), which falls within the recommended 3 V to 30 V supply range. Common-mode input range extends to VCC−, and output swing reaches ±3.5 V into 10 kΩ - verified in the "electrical characteristics" section for low-voltage conditions.
TL343IDBVRG4 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
TL343IDBVRG4 FAQ
1.How can I place an order for TL343IDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL343IDBVRG4 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 TL343IDBVRG4 reliable?
The price and inventory of TL343IDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL343IDBVRG4 is usually 5 days.
3.What payment methods are accepted for TL343IDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL343IDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL343IDBVRG4?
TL343IDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL343IDBVRG4 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 TL343IDBVRG4?
For technical support, including TL343IDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL343IDBVRG4 requirements.
6.How does Aetrix verify that TL343IDBVRG4 is sourced from the original manufacturer or authorized distributors?
All TL343IDBVRG4 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 TL343IDBVRG4 meets industry standards.
7.What is the process for return or replacement of TL343IDBVRG4?
All TL343IDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TL343IDBVRG4, 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 TL343IDBVRG4 part is unused and in its original packaging.
Return procedure for TL343IDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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