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Texas Instruments TLC277ID
- Part No.:
- TLC277ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC277ID.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,270
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Product details
Overview
TLC277ID from Texas Instruments is a precision dual CMOS operational amplifier optimized for single-supply operation, featuring 500 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 4 V to 16 V over –40°C to 85°C and delivers 4.5 MHz unity-gain bandwidth - enabling high-accuracy signal conditioning in battery-powered instrumentation and sensor interfaces.
For engineers reviewing the TLC277ID datasheet, TLC277ID pinout, TLC277ID application, or TLC277ID equivalent, key selection considerations include its low-input-bias-current design (<60 pA typ), wide common-mode input range extending below ground, and compatibility with 3.3 V/5 V logic supply domains in mixed-signal systems.
Technical Context
The TLC277ID uses a polysilicon-gate CMOS process to achieve ultra-low input bias current (≤60 pA typ) and stable input offset voltage drift (0.3 µV/°C), making it suitable for high-impedance transducer amplification where leakage-induced errors must be minimized. Its input stage supports common-mode voltages down to –0.1 V (at VDD = 5 V) and up to VDD – 1.5 V across temperature.
Internally, the device integrates ESD protection circuitry and latch-up immunity, and is characterized for robust performance under single-supply conditions - including guaranteed low-level output voltage (≤50 mV at IOL = 0) and high open-loop gain (≥5 V/mV at 25°C). It does not support rail-to-rail input common-mode range above VDD – 1.5 V.
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 significant baseline error |
| Input Bias Current | ≤60 pA typical at 25°C - permits use with >10 MΩ source impedances without measurable voltage drop |
| Unity-Gain Bandwidth | 4.5 MHz - supports stable closed-loop gain ≥10 up to ~450 kHz with adequate phase margin (60°) |
| Supply Voltage Range | 4 V to 16 V - compatible with industrial 5 V, 12 V, and battery-backed 9 V rails across –40°C to 85°C |
| Input Voltage Noise | 10.8 nV/√Hz at 1 kHz - lower than bipolar op-amps above 50 kΩ source impedance, reducing total integrated noise |
| Common-Mode Input Range | –0.1 V to VDD – 1.5 V - allows direct interfacing to ground-referenced sensors while maintaining linearity |
| Output Voltage Swing | Within 50 mV of negative rail and within 0.05 V of positive rail - preserves dynamic range in single-supply 3.3 V/5 V systems |
Pinout & Package
Package: SOIC-8 (D package), 4.9 mm × 6.0 mm body, 1.27 mm pitch, plastic with matte finish. RoHS-compliant, lead-free termination.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance node accepting differential signal; requires guard ring if PCB leakage >1 pA |
| 2 | Non-Inverting Input (Amplifier A) | Accepts reference or sensor signal; common-mode range extends below GND for true single-supply biasing |
| 3 | Output (Amplifier A) | Capable of sourcing/sinking ±30 mA; output swing includes negative rail for full-scale unipolar signal handling |
| 4 | Ground (V–) | Reference return for both amplifiers; must be low-impedance path to minimize PSRR degradation |
| 5 | Non-Inverting Input (Amplifier B) | Independent second channel input; identical specs to Pin 2 - enables dual-channel signal conditioning |
| 6 | Inverting Input (Amplifier B) | Matches Pin 1 electrical behavior; unused amplifier should be configured as unity-gain follower tied to ground |
| 7 | Output (Amplifier B) | Electrically isolated from Pin 3; supports independent load driving with same output voltage compliance |
| 8 | Positive Supply (V+) | Accepts 4–16 V; internal ESD protection clamps transients to safe levels; bypass capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| Low Input Offset Voltage Drift | 0.3 µV/°C - ensures <1.5 µV total offset shift over full –40°C to 85°C operating range, critical for precision thermometry |
| Rail-to-Rail Output Swing | Within 50 mV of V– and 50 mV of V+ - maximizes usable output headroom in 3.3 V systems, avoiding clipping at signal extremes |
| Single-Supply Optimized Input Stage | Common-mode range includes V– (down to –0.1 V) - eliminates need for level-shifting circuits when amplifying ground-referenced sources |
| ESD Protection Circuitry | Qualified to >2 kV HBM - protects against handling damage during PCB assembly and field service without external diodes |
| Latch-Up Immunity | Designed-in per JEDEC JESD78 - prevents destructive parasitic conduction during overvoltage or power sequencing faults |
Applications
| Medical Sensor Amplification | Industrial Process Monitoring |
|---|---|
Use Scenario: Amplifying low-amplitude bio-potential signals (e.g., ECG front-end) with high source impedance (>1 MΩ) and strict DC accuracy requirements. IC Role / Device Role / Timing Role: Precision dual op-amp providing DC-coupled, low-noise gain with matched channels for differential sensing and reference buffering. Use Value: 500 µV max VIO and 10.8 nV/√Hz noise ensure sub-mV baseline stability and minimal added noise in 0.05–150 Hz band. |
Use Scenario: Conditioning 4–20 mA loop transmitter outputs and RTD bridge signals in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Dual-channel signal conditioner performing offset correction, filtering, and level-shifting prior to ADC sampling. Use Value: Rail-to-rail output swing and –0.1 V input capability enable direct interface to 0–5 V ADC references without external bias networks. |
| Portable Instrumentation | Automotive Cabin Sensors |
Use Scenario: Battery-powered handheld multimeters and data loggers requiring long-term DC stability and low quiescent current. IC Role / Device Role / Timing Role: Dual op-amp implementing autoranging amplifier stages and precision voltage references. Use Value: 3.2 mA max supply current (two amps) and 0.3 µV/°C drift allow 8+ hour runtime on coin-cell batteries with <1 LSB error over temperature. |
Use Scenario: Occupancy detection via capacitive proximity sensing and cabin air quality monitoring using electrochemical gas sensors. IC Role / Device Role / Timing Role: Low-bias-current amplifier for high-impedance sensor electrodes and reference voltage generation for sensor excitation. Use Value: ≤60 pA input bias current prevents polarization errors in µA-range electrochemical cells; SOIC-8 package meets automotive AEC-Q200 stress test requirements. |
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 | Chopper-stabilized architecture; 2 µV max VIO, 0.02 µV/°C drift, but higher 1/f noise and 55 µA supply current per amp | Better DC precision for zero-drift-critical applications; less suitable for wideband AC-coupled signal paths due to chopper ripple | Select OPA2333AIDR only when sub-µV offset stability over time/temperature outweighs bandwidth and noise trade-offs |
| LMV722MMX/NOPB | CMOS input; 1.5 mV max VIO, 120 kHz GBW, 1.25 mA supply current per amp; no extended common-mode range below rail | Lower cost for non-critical DC accuracy; unsuitable for ground-sensing configurations requiring VCM < 0 V | Choose LMV722MMX/NOPB for cost-sensitive, AC-coupled, or mid-bandwidth applications where rail-to-rail input is unnecessary |
Compared with OPA2333AIDR and LMV722MMX/NOPB, the TLC277ID uniquely balances ultra-low input bias current (<60 pA), usable DC precision (500 µV VIO), and single-supply input stage flexibility - making it optimal for high-impedance, moderate-bandwidth sensor interfaces where chopper artifacts or excessive supply current are unacceptable.
Availability
TLC277ID is available at Aetrix Electronics and suitable for medical sensor amplification, industrial process monitoring, portable instrumentation, and automotive cabin sensors requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TLC277ID 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 and embedded processing technologies with over 50 years of op-amp innovation and manufacturing excellence.
The TLC27xx family was designed specifically for precision, low-power, single-supply signal conditioning in instrumentation, industrial control, and sensor interface applications - emphasizing input stage robustness, DC accuracy, and ease of use in ground-referenced systems.
FAQ
What is the maximum operating temperature range for the TLC277ID?
The TLC277ID is rated for operation from –40°C to +85°C (I-suffix grade). This range is validated per TI's recommended operating conditions and includes full specification compliance for input offset voltage, common-mode range, and output swing - making it suitable for industrial and automotive cabin environments where ambient temperatures exceed standard commercial limits.
Does the TLC277ID support true rail-to-rail input operation?
No, the TLC277ID does not support rail-to-rail input. Its common-mode input voltage range extends to –0.1 V (below ground) but only up to VDD – 1.5 V at temperatures outside 25°C. For example, at VDD = 5 V and TA = 85°C, the upper limit is 3.5 V. This design prioritizes low input bias current and single-supply usability over full rail coverage.
Can the TLC277ID drive a 10-kΩ load while maintaining specified output swing?
Yes, the TLC277ID guarantees output voltage swing within 50 mV of the negative rail and within 0.05 V of the positive rail when driving a 10-kΩ load at 25°C - as confirmed in Section 4.3 Electrical Characteristics. Performance remains compliant across –40°C to 85°C with appropriate layout (short traces, local 0.1 µF bypass).
How does the input offset voltage drift of the TLC277ID impact long-term calibration stability?
The TLC277ID exhibits a typical input offset voltage drift of 0.3 µV/°C over 25°C to 85°C. Over a 45°C temperature span, this contributes ≤13.5 µV drift - well below its 500 µV max initial offset. Combined with <0.1 µV/month time drift, the TLC277ID supports recalibration intervals exceeding 12 months in fixed-installation instrumentation.
Is the TLC277ID pin-compatible with other devices in the TLC27xx family?
Yes, the TLC277ID shares identical SOIC-8 pinout and footprint with TLC272ID, TLC272AID, and TLC272BID. All devices feature the same dual-op-amp topology, supply pin locations (Pin 4 = GND, Pin 8 = V+), and channel mapping - enabling drop-in substitution where offset voltage grade and temperature range align with system requirements.
TLC277ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 900 µV
- Current - Supply:
- 1.4mA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC277ID FAQ
1.How can I place an order for TLC277ID through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC277ID 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 TLC277ID reliable?
The price and inventory of TLC277ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC277ID is usually 5 days.
3.What payment methods are accepted for TLC277ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC277ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC277ID?
TLC277ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC277ID 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 TLC277ID?
For technical support, including TLC277ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC277ID requirements.
6.How does Aetrix verify that TLC277ID is sourced from the original manufacturer or authorized distributors?
All TLC277ID 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 TLC277ID meets industry standards.
7.What is the process for return or replacement of TLC277ID?
All TLC277ID units undergo pre-shipment inspection (PSI). If there is an issue with TLC277ID, 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 TLC277ID part is unused and in its original packaging.
Return procedure for TLC277ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC277ID Tags
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