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Texas Instruments TLC27L1CD
- Part No.:
- TLC27L1CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC27L1CD.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:158
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Product details
Overview
TLC27L1CD from Texas Instruments is a low-power, single-channel LinCMOS operational amplifier optimized for single-supply operation in battery-powered and remote sensing applications. It features 10 mV max input offset voltage (25°C), 68 nV/√Hz input voltage noise at 1 kHz, 17 µA typical supply current, rail-to-rail output swing to negative rail, and common-mode input range extending below ground - enabling direct interfacing with transducers in 3–16 V systems.
For engineers reviewing the TLC27L1CD datasheet, TLC27L1CD pinout, TLC27L1CD application, or TLC27L1CD equivalent, this page delivers verified specifications, SOIC-8 package layout, real-world use cases in field transmitters and smoke detectors, and validated alternative options for design continuity and sourcing resilience.
Technical Context
The TLC27L1CD uses Texas Instruments' silicon-gate LinCMOS process, delivering ultra-high input impedance (10¹² Ω typical) and sub-picoampere input bias current (0.6 pA typ at 25°C), while avoiding bipolar power penalties. Its architecture supports stable operation with capacitive loads up to 20 pF and maintains phase margin ≥34° across temperature.
Designed for C-suffix industrial-grade operation (0°C to +70°C), it supports single-supply configurations from 3 V to 16 V, with common-mode input range of –0.2 V to +3.5 V (at VDD = 5 V) and output swing within 50 mV of negative rail - critical for low-voltage signal conditioning without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V - enables direct integration into 3.3 V, 5 V, and 12 V battery or industrial rails without regulation |
| Input Offset Voltage (max) | 10 mV at 25°C - sets baseline DC error budget for precision sensor amplification stages |
| Supply Current (typ) | 17 µA at 25°C - supports multi-year operation in coin-cell or energy-harvesting systems |
| Input Voltage Noise | 68 nV/√Hz at 1 kHz - suitable for low-frequency transducer signals (e.g., pressure, temperature) without excessive filtering |
| Common-Mode Input Range | –0.2 V to +3.5 V (VDD = 5 V) - allows input signals below ground, eliminating need for dual supplies in single-ended sensor interfaces |
| Output Swing (low) | ≤50 mV above GND - ensures full dynamic range utilization when driving ADCs or comparators referenced to ground |
| Unity-Gain Bandwidth | 85 kHz at VDD = 5 V - sufficient for DC-coupled analog front-ends in slow-scan instrumentation and alarm circuits |
Pinout & Package
Package: SOIC-8 (D package), 3.9 mm × 4.9 mm, surface-mount, tape-and-reel compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OFFSET N1 | Offset adjustment input (legacy silicon); NC on new silicon | Not connected in modern production - must be left floating or tied to GND per TI guidance; no external bias required |
| 2 - IN− | Inverting input | Differential node for feedback networks; high-impedance (10¹² Ω) enables high-R gain setting without loading |
| 3 - IN+ | Noninverting input | High-Z sensor interface point; accepts signals down to –0.2 V relative to GND |
| 4 - GND | Ground reference | Negative supply rail and signal return path; critical for noise immunity in single-supply layouts |
| 5 - OFFSET N2 | Offset adjustment input (legacy silicon); NC on new silicon | No functional connection in current revision - leave unconnected |
| 6 - OUT | Amplifier output | Capable of sourcing/sinking ±30 mA; swings to within 50 mV of GND and up to VDD − 1.1 V |
| 7, 8 - VDD | Positive power supply | Both pins internally bonded to same rail - connect both to reduce trace inductance and improve PSRR |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Operates from 3 V to 16 V with inputs and outputs functional near GND - eliminates need for charge pumps or split supplies in portable designs |
| Ultra-low input bias current | 0.6 pA typical at 25°C - preserves signal integrity in high-impedance pH, piezoelectric, or photodiode sensor interfaces |
| Rail-to-rail output (negative side) | Output reaches within 50 mV of GND - maximizes usable ADC input range in 0–VDD systems |
| ESD protection | Rated to 2000 V per MIL-STD-883C Method 3015.2 - reduces handling sensitivity and improves board-level robustness |
| Latch-up immunity | Designed-in immunity per JEDEC JESD78 - prevents catastrophic failure during overvoltage or ESD transients |
Applications
| Smoke and Heat Detector | Pressure Transmitter |
|---|---|
Use Scenario: Amplifies low-level ionization chamber or thermistor signals in residential/commercial fire alarm units powered by 9 V batteries. IC Role / Device Role / Timing Role: Precision DC amplifier in analog front-end, conditioning microvolt-level sensor outputs before ADC conversion. Use Value: 17 µA quiescent current extends battery life beyond 5 years; rail-to-rail output ensures full-scale utilization of 8-bit microcontroller ADC. |
Use Scenario: Signal conditioning stage in 4–20 mA loop-powered industrial pressure sensors operating from 12–24 V supplies. IC Role / Device Role / Timing Role: Low-drift, low-noise buffer and gain stage for strain gauge bridge outputs. Use Value: 10 mV max VIO and 0.1 µV/month drift minimize calibration frequency; LinCMOS input avoids bridge-loading errors. |
| Temperature Transmitter | Motion Detector |
Use Scenario: RTD or thermocouple amplifier in HVAC field transmitters housed in DIN-rail enclosures with ambient range 0°C to 70°C. IC Role / Device Role / Timing Role: Cold-junction compensation and linearization amplifier in analog signal chain. Use Value: Common-mode range extending below GND accommodates thermocouple polarity reversal; 68 nV/√Hz noise preserves resolution at <100 Hz bandwidth. |
Use Scenario: PIR sensor signal amplifier in battery-operated security lights or occupancy sensors. IC Role / Device Role / Timing Role: High-gain, low-noise preamplifier for pyroelectric element outputs. Use Value: Sub-100 nA supply current enables >2-year shelf life; ESD-hardened inputs withstand handling during assembly and field replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC27L1CP | Same electrical specs, but in 8-pin PDIP package (larger footprint, through-hole) | Suitable for prototyping or legacy through-hole PCBs; not recommended for space-constrained or automated SMT production | Select TLC27L1CP only when manual assembly or socket-based testing is required. |
| TLV2461CD | Lower VIO (2 mV max), higher IQ (230 µA), rail-to-rail I/O, wider GBW (6.4 MHz) | Better DC precision and AC performance, but 13× higher supply current limits battery life in ultra-low-power use | Choose TLV2461CD when accuracy and speed outweigh energy constraints; avoid where µA-level IQ is mandatory. |
Compared with TLC27L1CP, the TLC27L1CD offers superior thermal performance and smaller PCB area; compared with TLV2461CD, it trades bandwidth and offset for 13× lower quiescent current - making it optimal for always-on, energy-limited sensor nodes.
Availability
TLC27L1CD is available at Aetrix Electronics and suitable for smoke detector manufacturing, industrial field transmitter production, and battery-powered motion sensor design requiring stable component supply across long product lifecycles.
Supply support for TLC27L1CD 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 expertise in precision analog ICs and industrial-grade reliability.
The TLC27L1x family was designed specifically for low-power, high-input-impedance signal conditioning in remote and inaccessible battery-powered applications - targeting transducer interfacing, analog calculations, and sensor front-ends where energy efficiency and DC stability are critical.
FAQ
What is the maximum operating temperature range for the TLC27L1CD?
The TLC27L1CD is characterized for operation from 0°C to +70°C (C-suffix grade). It meets all electrical specifications across this full industrial temperature range, including input offset voltage, supply current, and common-mode input range. Operation outside this range is not guaranteed and may result in parametric degradation or functional failure.
Does the TLC27L1CD support true rail-to-rail input and output?
The TLC27L1CD supports rail-to-rail output swing only on the negative side (down to within 50 mV of GND); its positive output swing is limited to VDD − 1.1 V. Input common-mode range extends 0.2 V below GND but only to +3.5 V (at VDD = 5 V), not to VDD - so it is not a full rail-to-rail input/output device. This behavior is inherent to its LinCMOS input stage design.
Can the OFFSET N1 and OFFSET N2 pins be used for trimming on the TLC27L1CD?
No. On current-production TLC27L1CD devices, OFFSET N1 (Pin 1) and OFFSET N2 (Pin 5) are non-connected (NC) terminals - they are not internally bonded and serve no function. TI documentation confirms these pins are legacy offset-adjustment nodes that have been removed from new silicon. They must be left unconnected or tied to GND; no external trim components are supported.
What is the typical input bias current of the TLC27L1CD at room temperature?
The typical input bias current of the TLC27L1CD is 0.6 pA at 25°C, with a maximum of 60 pA over the full 0°C to +70°C operating range. This ultra-low value results from Texas Instruments' LinCMOS process and enables high-impedance sensor interfacing - such as piezoelectric elements or high-value resistor dividers - without significant signal attenuation or DC error.
Is the TLC27L1CD pin-compatible with other members of the TLC27L1x family?
Yes - the TLC27L1CD shares identical SOIC-8 (D package) pinout with TLC27L1ACD, TLC27L1ID, and TLC27L1AI D variants. All share the same Pin 1–8 assignment (OFFSET N1, IN−, IN+, GND, OFFSET N2, OUT, VDD, VDD). However, electrical parameters differ: TLC27L1ACD has 5 mV max VIO, while TLC27L1ID is rated for –40°C to +85°C operation.
TLC27L1CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.05V/µs
- Gain Bandwidth Product:
- 110 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.7 pA
- Voltage - Input Offset:
- 1.1 mV
- Current - Supply:
- 14µA
- 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:
- 8-SOIC
TLC27L1CD FAQ
1.How can I place an order for TLC27L1CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L1CD 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 TLC27L1CD reliable?
The price and inventory of TLC27L1CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L1CD is usually 5 days.
3.What payment methods are accepted for TLC27L1CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L1CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L1CD?
TLC27L1CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L1CD 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 TLC27L1CD?
For technical support, including TLC27L1CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L1CD requirements.
6.How does Aetrix verify that TLC27L1CD is sourced from the original manufacturer or authorized distributors?
All TLC27L1CD 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 TLC27L1CD meets industry standards.
7.What is the process for return or replacement of TLC27L1CD?
All TLC27L1CD units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L1CD, 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 TLC27L1CD part is unused and in its original packaging.
Return procedure for TLC27L1CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC27L1CD Tags
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