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Texas Instruments TL343IDBVRE4
- Part No.:
- TL343IDBVRE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TL343IDBVRE4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,137
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Product details
Overview
TL343IDBVRE4 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 - used in industrial sensor signal conditioning and low-voltage analog front-ends.
For engineers reviewing the TL343IDBVRE4 datasheet, TL343IDBVRE4 pinout, TL343IDBVRE4 application, or TL343IDBVRE4 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 V systems where ground-referenced inputs are required.
Technical Context
The TL343IDBVRE4 implements a classic bipolar-input op amp architecture with internal frequency compensation, enabling stable unity-gain operation without external components. Its input stage supports common-mode voltages down to VCC−, and its Class AB output stage provides low crossover distortion (1%) and ±55 mA short-circuit output current.
It achieves 1 MHz unity-gain bandwidth and 9 kHz full-power bandwidth at ±10 V output swing, with phase margin of 44° under 200 pF capacitive load - indicating robust stability in driving moderate capacitive loads typical of sensor interfaces and DAC buffers.
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/12 V logic and legacy ±15 V systems. |
| Input Offset Voltage | Max 12 mV over −40°C to +125°C - 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. |
| Output Swing | ±10 V into 2 kΩ at ±15 V supply - delivers usable dynamic range for analog outputs driving ADCs or actuators. |
| Supply Current | 0.7–2.8 mA - enables low-power operation in battery-backed or energy-constrained industrial nodes. |
| Input Bias Current | −800 nA max over temperature - suitable for high-impedance sources like thermistors or photodiodes without significant error. |
| Common-Mode Input Range | VCC− to (VCC+ − 2 V) - allows ground-referenced input signals 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 (3000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | High-impedance differential input node accepting signals down to VCC−; bias current ≤ −800 nA. |
| 2 (VCC−/GND) | Negative supply or ground reference | Return path for supply and input common-mode; common-mode range extends to this pin. |
| 3 (IN−) | Inverting input | Differential input node with matched characteristics to IN+; supports ±36 V differential input voltage. |
| 4 (VCC+) | Positive supply | Accepts 3–30 V single supply or positive rail in dual-supply mode; max 36 V difference vs VCC−. |
| 5 (OUT) | Amplified output | Class AB stage delivering ±10 V swing into 2 kΩ; short-circuit protected to ±55 mA. |
Key Features
| Feature | Design Value |
|---|---|
| True differential input stage | Enables precision instrumentation topologies (e.g., difference amplifiers) with matched IN+/IN− characteristics and 90 dB CMRR. |
| Single-supply operation from 3 V | Supports modern low-voltage microcontroller-based systems without level-shifting circuitry for sensor interface. |
| Internal frequency compensation | Guarantees stability in unity-gain follower and inverting configurations without external compensation components. |
| Short-circuit protection | Prevents device failure during output overload or accidental grounding - critical for field-deployed industrial hardware. |
| Low input bias current (−800 nA max) | Minimizes voltage error across high-value feedback or source impedances (>100 kΩ) in precision transducer circuits. |
Applications
| Industrial Sensor Signal Conditioning | Low-Voltage Analog Front-End |
|---|---|
|
Use Scenario: Amplifying millivolt-level outputs from RTDs, thermocouples, or strain gauges in PLC analog input modules. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with ground-referenced input and rail-compatible output swing. Use Value: Input common-mode range to VCC− eliminates need for negative supply or level shifters, reducing BOM count and layout area. |
Use Scenario: Buffering DAC outputs in battery-powered portable test equipment operating from 3.3 V supply. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating DAC from variable load impedance while preserving DC accuracy. Use Value: 0.7 mA supply current and 3 V minimum operation extend battery life without sacrificing offset or bandwidth. |
| Legacy System Voltage-Level Translation | Power Supply Monitor Comparator Driver |
|
Use Scenario: Interfacing 5 V microcontrollers with ±12 V analog subsystems in industrial motion controllers. IC Role / Device Role / Timing Role: Single-supply op amp configured as level-shifting amplifier with adjustable gain and offset. Use Value: Dual-supply capability (±1.5 V to ±15 V) and wide common-mode range allow direct connection to both logic and analog domains. |
Use Scenario: Driving comparator inputs in overvoltage/undervoltage detection circuits for 12 V and 24 V power rails. IC Role / Device Role / Timing Role: High-impedance buffer isolating resistive divider from comparator input capacitance and leakage. Use Value: Low input bias current (≤ −800 nA) prevents loading of high-ratio dividers, maintaining trip-point accuracy over temperature. |
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 GBW (1.3 MHz), but no dual-supply rating below ±1.5 V; input common-mode does not reach V−. | Better DC precision and speed in 3.3 V–5 V single-supply apps; unsuitable for true ground-sensing or split-supply use cases. | Select LM321IDBVR when offset and bandwidth dominate; retain TL343IDBVRE4 for VCC−-referenced inputs or wider supply flexibility. |
| TLV2461CDBVR | Rail-to-rail output, lower supply current (0.6 mA), but limited output drive (±8 mA); input common-mode includes V− but offset is higher (2.5 mV typ, 6 mV max). | Superior for ultra-low-power, rail-to-rail output buffering; weaker drive limits use with heavy capacitive or resistive loads. | Choose TLV2461CDBVR for battery-sensitive designs needing full output swing; TL343IDBVRE4 remains preferred for robust output drive and industrial temp range. |
Compared with LM321IDBVR and TLV2461CDBVR, the TL343IDBVRE4 uniquely combines guaranteed VCC−-to-rail input operation, ±55 mA short-circuit output, and −40°C to +125°C qualification - making it the only option among the three qualified for ground-referenced sensor amps in extended-temperature industrial environments.
Availability
TL343IDBVRE4 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, low-voltage analog front-ends, and legacy system voltage-level translation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL343IDBVRE4 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 connectivity technologies, with decades of heritage in precision op amp design and industrial-grade reliability.
The TL343IDBVRE4 belongs to TI's general-purpose bipolar op amp product line, engineered for cost-sensitive yet robust industrial and automotive-qualified signal conditioning where wide supply range and extended temperature operation are mandatory.
FAQ
What is the maximum supply voltage rating for TL343IDBVRE4?
The TL343IDBVRE4 supports a maximum total supply voltage of 36 V - meaning the absolute difference between VCC+ and VCC− must not exceed 36 V. In single-supply mode, VCC+ may be up to 30 V with VCC− tied to ground. Absolute maximum ratings also limit individual supply pins to ±18 V referenced to midpoint, per the datasheet's Note 1.
Does TL343IDBVRE4 support true rail-to-rail input operation?
The TL343IDBVRE4 supports common-mode input voltage down to VCC−, but not to VCC+. Its positive input limit is VCC+ − 2 V, as confirmed in the electrical characteristics table and Note 7. So it is ground-sensing (rail-to-rail on the negative side) but not fully rail-to-rail on both sides - a key distinction from CMOS-input RRO op amps.
What is the output drive capability of TL343IDBVRE4?
The TL343IDBVRE4 delivers ±10 V peak output swing into a 2 kΩ load at ±15 V supplies, and provides ±55 mA short-circuit output current. This makes it suitable for driving moderate loads such as ADC reference buffers, small relays, or multiple parallel inputs without external boost stages.
Is TL343IDBVRE4 pin-compatible with other SOT-23-5 op amps like LM321 or TLV2461?
No - TL343IDBVRE4 uses a nonstandard pinout: Pin 1 = IN+, Pin 2 = VCC−/GND, Pin 3 = IN−, Pin 4 = VCC+, Pin 5 = OUT. LM321 and TLV2461 follow industry-standard SOT-23-5 op amp pinout (IN−, IN+, VCC−, OUT, VCC+), so PCB layout changes are required for substitution.
What is the temperature range qualification for TL343IDBVRE4?
The TL343IDBVRE4 is specified for operation from −40°C to +125°C ambient temperature, with all key parameters (input offset voltage, bias current, supply current, output swing) guaranteed across this full industrial range - verified in the "recommended operating conditions" and "electrical characteristics" tables of the SLOS250G datasheet.
TL343IDBVRE4 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
TL343IDBVRE4 FAQ
1.How can I place an order for TL343IDBVRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL343IDBVRE4 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 TL343IDBVRE4 reliable?
The price and inventory of TL343IDBVRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL343IDBVRE4 is usually 5 days.
3.What payment methods are accepted for TL343IDBVRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL343IDBVRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL343IDBVRE4?
TL343IDBVRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL343IDBVRE4 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 TL343IDBVRE4?
For technical support, including TL343IDBVRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL343IDBVRE4 requirements.
6.How does Aetrix verify that TL343IDBVRE4 is sourced from the original manufacturer or authorized distributors?
All TL343IDBVRE4 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 TL343IDBVRE4 meets industry standards.
7.What is the process for return or replacement of TL343IDBVRE4?
All TL343IDBVRE4 units undergo pre-shipment inspection (PSI). If there is an issue with TL343IDBVRE4, 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 TL343IDBVRE4 part is unused and in its original packaging.
Return procedure for TL343IDBVRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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