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Texas Instruments TLC277CPSLE
- Part No.:
- TLC277CPSLE
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TLC277CPSLE.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC277CPSLE from Texas Instruments is a precision dual CMOS operational amplifier featuring 500 µV max input offset voltage at 25°C, 25 nV/√Hz input noise at 1 kHz, and rail-to-rail output swing down to the negative rail. It operates from 3 V to 16 V supply over 0°C to 70°C and supports single-supply transducer interfacing in battery-powered instrumentation.
For engineers reviewing the TLC277CPSLE datasheet, TLC277CPSLE pinout, TLC277CPSLE application, or TLC277CPSLE equivalent, this device is selected for low-drift analog signal conditioning where input bias current <1 pA, common-mode range extending below ground, and ESD-protected operation are required.
Technical Context
The TLC277CPSLE uses Texas Instruments' LinCMOS™ silicon-gate process to achieve stable offset voltage (500 µV max) and ultra-low input bias current (0.6 pA typ at 25°C), enabling high-impedance sensor interfacing without passive compensation. Its common-mode input voltage range extends to –0.2 V (at VDD = 5 V), supporting true single-supply operation with inputs referenced to ground.
It delivers 3.6 V/µs slew rate and 1.7 MHz unity-gain bandwidth at VDD = 5 V, balancing precision and speed for active filtering and analog computation. Internal ESD protection meets MIL-STD-883C, Method 3015.2 (2000 V), and latch-up immunity is designed-in per specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 500 µV max at 25°C - enables DC-coupled amplification of mV-level sensor signals without nulling circuitry |
| Input Bias Current | 0.6 pA typical at 25°C - preserves signal integrity in high-Z pH, piezoelectric, or photodiode front-ends |
| Common-Mode Range | Extends to –0.2 V below ground at VDD = 5 V - allows direct interface to 0 V-referenced sensors in single-supply systems |
| Output Swing | Includes negative rail (VOL ≤ 50 mV at IOL = 0) - supports full-scale signal utilization in 3 V–5 V microcontroller ADC interfaces |
| Supply Voltage Range | 3 V to 16 V over 0°C to 70°C - accommodates both low-voltage portable designs and industrial 12 V rails |
| Input Noise Density | 25 nV/√Hz at 1 kHz - suitable for precision amplification of low-frequency biosignals and strain gauge outputs |
| ESD Protection | 2000 V per MIL-STD-883C, Method 3015.2 - reduces handling sensitivity and improves board-level robustness |
Pinout & Package
Package: TSSOP-8 (PW), 3.0 mm × 4.4 mm, 0.65 mm pitch, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Amplifier 1 output | Delivers rail-to-rail output swing; drives 10 kΩ load with ≤50 mV headroom to negative rail |
| 2 (IN–1) | Inverting input, Amp 1 | High-impedance node (10¹² Ω); accepts differential or single-ended signals with common-mode down to –0.2 V |
| 3 (IN+1) | Non-inverting input, Amp 1 | Matches IN–1 in bias current and offset; used for unity-gain buffers or non-inverting gain stages |
| 4 (GND) | Analog ground reference | Return path for both amplifiers; must be low-impedance to minimize PSRR degradation |
| 5 (VDD) | Positive supply rail | Accepts 3 V–16 V; decoupling capacitor (0.1 µF) required within 5 mm for stability |
| 6 (OUT2) | Amplifier 2 output | Independent output stage; identical specs to OUT1 - enables dual-channel signal processing |
| 7 (IN–2) | Inverting input, Amp 2 | Electrically isolated from Amp 1 inputs; supports independent feedback networks |
| 8 (IN+2) | Non-inverting input, Amp 2 | Provides second precision gain path; matched offset drift ensures channel-to-channel tracking |
Key Features
| Feature | Design Value |
|---|---|
| Trimmed input offset voltage | 500 µV max at 25°C - eliminates need for external trimming in production-grade instrumentation |
| Input offset voltage drift | 0.1 µV/month (including first 30 days) - ensures long-term calibration stability in unattended monitoring systems |
| Rail-to-rail output capability | Swings to negative rail with ≤50 mV saturation - maximizes dynamic range when interfacing to 3.3 V ADCs |
| Ultra-high input impedance | 10¹² Ω typical - prevents loading of high-output-impedance sources like thermocouples or capacitive sensors |
| Single-supply optimized design | Common-mode range includes negative rail - enables ground-referenced sensor excitation and signal acquisition |
Applications
| Strain Gauge Signal Conditioning | Portable ECG Front-End |
|---|---|
Use Scenario: Amplifying µV-level Wheatstone bridge outputs from load cells in industrial weighing systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier core (configured as difference amp) with matched dual channels for ratiometric rejection. Use Value: 500 µV max VIO and 0.6 pA IIB prevent bridge imbalance errors and thermal EMF corruption in low-power 5 V systems. | Use Scenario: Biopotential amplification in battery-operated wearable ECG monitors with 3.3 V MCU integration. IC Role / Device Role / Timing Role: First-stage AC-coupled gain block with high-pass filtering and DC restoration. Use Value: Rail-to-rail output swing and –0.2 V common-mode range enable full utilization of 3.3 V ADC input range without level-shifting. |
| Thermocouple Cold-Junction Compensation | Programmable Gain Instrumentation Amplifier (PGIA) |
Use Scenario: Measuring cold-junction temperature via RTD or diode sensor in industrial furnace controllers. IC Role / Device Role / Timing Role: Low-drift buffer and signal conditioner for low-current temperature sensing elements. Use Value: Sub-picoampere input bias current avoids self-heating errors in 10 kΩ RTD bridges; 25 nV/√Hz noise preserves resolution at <1 Hz. | Use Scenario: Configurable gain stage in automated test equipment requiring 1×, 10×, and 100× settings via external switches. IC Role / Device Role / Timing Role: Dual-op-amp building block for discrete PGIA topologies (e.g., three-op-amp architecture). Use Value: Matched offset and drift between channels ensure consistent gain accuracy across switching; 1.7 MHz GBW supports >100 kHz step response at G = 100. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture; 2 µV max VIO, 0.02 µV/°C drift; higher quiescent current (17 µA/ch) | Better DC accuracy for sub-µV requirements; less suitable for 3 V battery life-critical designs | Select OPA2333AIDR only when VIO drift <0.1 µV/°C is mandatory and supply current budget allows ≥34 µA total |
| LMV722MMX/NOPB | Higher VIO (2.5 mV max); lower supply range (2.7 V–5.5 V); 10x higher IIB (100 pA) | Cost-optimized for consumer-grade sensor interfaces where 500 µV VIO is not required | Choose LMV722MMX/NOPB for cost-sensitive, narrow-supply (3.3 V) applications where 2.5 mV VIO is acceptable |
Compared with OPA2333AIDR and LMV722MMX/NOPB, the TLC277CPSLE provides optimal balance of ultra-low bias current (0.6 pA), rail-to-rail output, and wide supply range (3–16 V), making it uniquely suited for industrial single-supply sensor nodes where long-term drift and high-Z source compatibility are critical.
Availability
TLC277CPSLE is available at Aetrix Electronics and suitable for strain gauge signal conditioning, portable ECG front-ends, thermocouple cold-junction compensation, programmable gain instrumentation amplifiers, and industrial sensor interface modules requiring stable component supply across extended temperature and voltage ranges.
Supply support for TLC277CPSLE 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, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLC277 belongs to TI's LinCMOS™ precision op-amp family, engineered for high-input-impedance, low-drift analog signal conditioning in single-supply industrial instrumentation and portable measurement systems.
FAQ
What is the maximum input offset voltage specification for TLC277CPSLE at 25°C?
The maximum input offset voltage for TLC277CPSLE is 500 µV at 25°C under VDD = 5 V, as specified in the SLOS091B datasheet. This value applies across the full operating temperature range (0°C to 70°C) for C-suffix devices. The TLC277CPSLE achieves this performance using TI's LinCMOS™ trimming process, ensuring consistent DC accuracy without external calibration in production systems.
Does TLC277CPSLE support true single-supply operation with inputs referenced to ground?
Yes, TLC277CPSLE supports true single-supply operation: its common-mode input voltage range extends to –0.2 V below ground at VDD = 5 V, and output swings to within 50 mV of the negative rail. This allows direct connection of ground-referenced sensors (e.g., thermocouples, bridge transducers) without level-shifting circuitry - a key feature confirmed in the "Recommended Operating Conditions" table of the TLC277CPSLE datasheet.
What package type and footprint does TLC277CPSLE use?
TLC277CPSLE uses the TSSOP-8 (PW) package: 3.0 mm × 4.4 mm body, 0.65 mm lead pitch, 8-pin surface-mount outline. Pin 1 is marked by a dot; the package is moisture sensitivity level 1 (MSL-1), requiring no bake prior to reflow. This compact footprint is validated in TI's official packaging drawings and supported by Digi-Key and Mouser part data for TLC277CPSLE.
How does the input bias current of TLC277CPSLE compare to bipolar op-amps in sensor applications?
TLC277CPSLE exhibits 0.6 pA typical input bias current at 25°C - over six orders of magnitude lower than typical bipolar op-amps (e.g., LM358: ~45 nA). This enables accurate amplification of high-impedance sources like pH electrodes, piezoresistive sensors, and photodiodes without significant voltage error or signal distortion, as verified in the "Electrical Characteristics" tables of the TLC277CPSLE datasheet.
Is TLC277CPSLE rated for industrial temperature range operation?
No, TLC277CPSLE is rated for 0°C to 70°C operation (C-suffix). For industrial temperature range (–40°C to 85°C), the equivalent part is TLC277IP or TLC277ID; for extended military range (–55°C to 125°C), use TLC277MP or TLC277MFK. The "C" suffix in TLC277CPSLE explicitly denotes commercial temperature grade, per TI's standard part numbering convention documented in SLOS091B.
TLC277CPSLE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 5.3V/µs
- Gain Bandwidth Product:
- 2.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.7 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 1.9mA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
TLC277CPSLE FAQ
1.How can I place an order for TLC277CPSLE through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC277CPSLE 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 TLC277CPSLE reliable?
The price and inventory of TLC277CPSLE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC277CPSLE is usually 5 days.
3.What payment methods are accepted for TLC277CPSLE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC277CPSLE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC277CPSLE?
TLC277CPSLE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC277CPSLE 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 TLC277CPSLE?
For technical support, including TLC277CPSLE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC277CPSLE requirements.
6.How does Aetrix verify that TLC277CPSLE is sourced from the original manufacturer or authorized distributors?
All TLC277CPSLE 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 TLC277CPSLE meets industry standards.
7.What is the process for return or replacement of TLC277CPSLE?
All TLC277CPSLE units undergo pre-shipment inspection (PSI). If there is an issue with TLC277CPSLE, 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 TLC277CPSLE part is unused and in its original packaging.
Return procedure for TLC277CPSLE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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