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Texas Instruments TLC279CNSG4
- Part No.:
- TLC279CNSG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TLC279CNSG4.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,859
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Product details
Overview
TLC279CNSG4 from Texas Instruments is a precision quad CMOS operational amplifier optimized for single-supply operation, featuring 900 µV max input offset voltage (25°C), 10.8 nV/√Hz input voltage noise at 1 kHz, and rail-to-rail output swing down to the negative rail. It operates from 3 V to 16 V over 0°C to 70°C and delivers high input impedance (>10¹² Ω) for low-level sensor signal conditioning in industrial instrumentation.
For engineers reviewing the TLC279CNSG4 datasheet, TLC279CNSG4 pinout, TLC279CNSG4 application, or TLC279CNSG4 equivalent, key selection criteria include input offset voltage grade, common-mode input range extending below ground, low-noise performance at high source impedances, and compatibility with TTL/HCMOS supply rails.
Technical Context
The TLC279CNSG4 uses a polysilicon-gate CMOS process to achieve low input bias current (≤60 pA typ), minimal offset voltage drift (0.3 µV/°C), and latch-up immunity. Its input stage supports common-mode voltages down to –0.1 V (at VDD = 5 V) and up to VDD – 1 V, enabling direct interfacing with grounded-referenced sensors.
It delivers 4.5 MHz unity-gain bandwidth, 0.5 V/µs slew rate, and 10 kHz maximum output-swing bandwidth into 10 kΩ//20 pF - characteristics tailored for precision DC-coupled amplification and active filtering where stability and low DC error dominate over high-speed response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 900 µV max at 25°C - enables ≤0.09% gain error in 10 V full-scale measurement systems without trimming |
| Input Voltage Noise | 10.8 nV/√Hz at 1 kHz - supports accurate amplification of microvolt-level signals from high-impedance sources (e.g., piezoelectric sensors) |
| Common-Mode Input Range | –0.1 V to 3.5 V (VDD = 5 V) - allows direct connection to 0 V-referenced transducers without level-shifting circuitry |
| Output Voltage Swing | 0 V to 4.95 V (VDD = 5 V, RL = 10 kΩ) - provides full dynamic range into ADCs or logic interfaces operating from same supply |
| Supply Current (quad) | 2.24–6.4 mA at 25°C - balances low power consumption with sufficient drive capability for multi-channel analog front-ends |
| Unity-Gain Bandwidth | 4.5 MHz - supports stable closed-loop gain ≥10 up to ~450 kHz with adequate phase margin (60°) |
| CMRR / PSRR | 65–80 dB (CMRR), 65–120 dB (PSRR) - rejects interference from shared supply rails and common-mode noise in noisy industrial environments |
Pinout & Package
Package: SOIC-14 (D package), 8.65 mm × 6 mm body, surface-mount, plastic, with standard JEDEC outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output | Amplifier channel 1 output - drives loads up to ±30 mA; rail-to-rail swing supports single-supply ADC interfacing |
| 1IN–, 1IN+ | Input | Inverting/noninverting inputs for channel 1 - high-impedance (>10¹² Ω) nodes sensitive to PCB leakage; guard ring recommended |
| VDD | Power | Positive supply pin - accepts 3 V to 16 V; bypassing with 0.1 µF ceramic capacitor near pin essential for noise immunity |
| GND | Power | Negative supply/ground reference - serves as return path for all four amplifiers; must be low-impedance plane |
| 2IN+, 2IN–, 2OUT 3IN+, 3IN–, 3OUT 4IN+, 4IN–, 4OUT |
Input/Output | Channels 2–4 identical to channel 1 - enables independent signal paths for multi-sensor systems or multi-stage filtering |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply optimized input stage | Common-mode range extends 0.1 V below GND - eliminates need for negative supply in sensor front-ends |
| Rail-to-rail output swing | Drives to within 50 mV of GND and 50 mV of VDD - maximizes usable dynamic range with 5 V or 3.3 V ADCs |
| Ultra-low input bias current | ≤60 pA typical at 25°C - enables use of >1 MΩ feedback networks without significant DC error |
| ESD protection circuitry | Qualified to JEDEC JS-001 Class 2 (2 kV HBM) - enhances robustness during board assembly and field handling |
| Latch-up immunity | Designed-in per JEDEC JESD78 - prevents destructive latch-up under overvoltage or ESD stress conditions |
Applications
| Industrial Sensor Signal Conditioning | Medical Instrumentation Front-End |
|---|---|
|
Use Scenario: Amplifying low-level outputs from strain gauges, thermocouples, or pH electrodes in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset correction and anti-alias filtering before 16-bit SAR ADC sampling. Use Value: 900 µV max VIO and 0.3 µV/°C drift ensure <±0.1% total error over temperature without calibration - reducing BOM cost and firmware complexity. |
Use Scenario: Biopotential signal amplification (ECG, EEG) in portable diagnostic devices requiring battery-powered, low-noise analog acquisition. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer and high-pass filter driver with ultra-low input current to minimize electrode polarization effects. Use Value: 10.8 nV/√Hz noise and ≤60 pA IB enable clean acquisition of µV-level bio-signals from high-impedance dry electrodes without active guarding. |
| Automotive Cabin Environment Monitoring | Test & Measurement Equipment |
|
Use Scenario: Signal conditioning for cabin air quality sensors (CO₂, VOC) in automotive HVAC control units operating across –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Low-drift, rail-to-rail amplifier for analog sensor output scaling and offset adjustment prior to microcontroller ADC. Use Value: Specified performance over 0°C to 70°C (C-suffix) with guaranteed 1.5 mV max VIO over full range ensures consistent accuracy without thermal compensation circuitry. |
Use Scenario: Multi-channel voltage reference buffering and DAC output amplification in benchtop multimeters and calibrators. IC Role / Device Role / Timing Role: Quad op-amp providing matched gain stages, reference followers, and output drivers in compact 14-pin SOIC footprint. Use Value: Four matched amplifiers in one package reduce layout area and inter-channel mismatch - critical for differential measurements and auto-zero architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision quad op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2474IDR | Lower VIO (600 µV max), higher quiescent current (650 µA/amplifier), rail-to-rail I/O, 2.8 V to 6 V supply only | Better DC precision but limited to low-voltage systems; not suitable for 12 V or 16 V single-supply industrial designs | Select when operating ≤5.5 V and sub-600 µV offset is required; avoid if 3–16 V supply flexibility or legacy 5 V/12 V compatibility is needed |
| OPA4188AIPW | Zero-drift architecture, 0.03 µV/°C drift, 1.2 µV max VIO, 1.2 mA/amplifier supply current, 4.5 V to 36 V supply | Superior long-term stability and drift performance, but higher cost and power; requires external capacitors for stability | Choose for metrology-grade accuracy over time/temperature; reserve TLC279CNSG4 for cost-sensitive, wide-supply industrial applications where 0.3 µV/°C drift is acceptable |
Compared with TLV2474IDR and OPA4188AIPW, the TLC279CNSG4 offers the broadest supply range (3–16 V), lowest cost per channel, and proven reliability in legacy industrial systems - making it optimal for new designs targeting compatibility with existing 5 V/12 V infrastructure and moderate precision requirements.
Availability
TLC279CNSG4 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, medical instrumentation front-ends, and automotive cabin environment monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC279CNSG4 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 industrial-grade signal chain solutions.
The TLC27xx family was designed for cost-effective, high-accuracy analog signal conditioning in industrial, medical, and test equipment - emphasizing single-supply operation, low drift, and robustness in real-world PCB environments.
FAQ
What is the maximum input offset voltage specification for TLC279CNSG4 at 25°C?
The TLC279CNSG4 has a maximum input offset voltage of 900 µV at 25°C, as specified in the Electrical Characteristics table under VIO for TLC279C grade. This value is guaranteed across production lots and forms the basis for DC accuracy in precision amplification circuits using the TLC279CNSG4.
Does TLC279CNSG4 support true rail-to-rail input operation?
No - the TLC279CNSG4 supports rail-to-rail *output* swing but not rail-to-rail *input*. Its common-mode input voltage range extends to –0.1 V (below GND) and up to VDD – 1 V at 25°C, meaning it accepts inputs slightly below ground but not up to the positive rail. This behavior is confirmed in Section 4.2 Recommended Operating Conditions.
What package type and dimensions does TLC279CNSG4 use?
The TLC279CNSG4 uses the SOIC-14 (D) package: 8.65 mm × 6 mm body size, 1.75 mm height, with 1.27 mm lead pitch. This is explicitly listed in the Device Information table for TLC279 under "PACKAGE" and verified in TI's official packaging documentation SLOS092E.
Can TLC279CNSG4 operate from a 3.3 V supply?
Yes - the TLC279CNSG4 is rated for 3 V to 16 V single-supply operation across 0°C to 70°C (C-suffix). At 3.3 V, it maintains rail-to-rail output swing (0 V to ~3.25 V), 10.8 nV/√Hz noise, and functional common-mode range, making it suitable for mixed-signal systems powered by standard 3.3 V LDOs.
How does the input bias current of TLC279CNSG4 compare to bipolar op-amps?
The TLC279CNSG4 exhibits ≤60 pA typical input bias current at 25°C - over six orders of magnitude lower than typical bipolar op-amps (e.g., LM324: ~45 nA). This enables high-impedance sensor interfaces and large-value feedback networks without significant DC error, a key advantage confirmed in Section 4.3 Electrical Characteristics.
TLC279CNSG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 3.6V/µs
- Gain Bandwidth Product:
- 2.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.6 pA
- Voltage - Input Offset:
- 320 µV
- Current - Supply:
- 2.7mA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
TLC279CNSG4 FAQ
1.How can I place an order for TLC279CNSG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC279CNSG4 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 TLC279CNSG4 reliable?
The price and inventory of TLC279CNSG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC279CNSG4 is usually 5 days.
3.What payment methods are accepted for TLC279CNSG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC279CNSG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC279CNSG4?
TLC279CNSG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC279CNSG4 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 TLC279CNSG4?
For technical support, including TLC279CNSG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC279CNSG4 requirements.
6.How does Aetrix verify that TLC279CNSG4 is sourced from the original manufacturer or authorized distributors?
All TLC279CNSG4 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 TLC279CNSG4 meets industry standards.
7.What is the process for return or replacement of TLC279CNSG4?
All TLC279CNSG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC279CNSG4, 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 TLC279CNSG4 part is unused and in its original packaging.
Return procedure for TLC279CNSG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC279CNSG4 Tags
-
LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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