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Texas Instruments TLC27L2CD
- Part No.:
- TLC27L2CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC27L2CD.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:559
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Product details
Overview
TLC27L2CD from Texas Instruments is a precision dual CMOS operational amplifier optimized for low-power, single-supply sensor signal conditioning. It delivers 10 mV max input offset voltage (25°C), ultra-low 34 µA typical supply current at 5 V, and rail-to-rail output swing down to the negative rail - enabling direct interfacing with transducers in battery-powered field transmitters.
For engineers reviewing the TLC27L2CD datasheet, TLC27L2CD pinout, TLC27L2CD application, or TLC27L2CD equivalent, key selection criteria include its 0°C to 70°C industrial temperature range, SOIC-8 package compatibility, LinCMOS™ input impedance (>10¹² Ω), and verified performance in smoke/heat detector front-ends and pressure transmitter analog signal chains.
Technical Context
The TLC27L2CD uses Texas Instruments' silicon-gate LinCMOS™ process to achieve stable input offset voltage drift (0.1 µV/month) and high common-mode rejection (87 dB min) without bipolar power penalties. Its dual-channel architecture supports independent gain stages in compact instrumentation designs.
It operates from 3 V to 16 V with common-mode input extending below ground (–0.2 V at 5 V), enabling true single-supply operation in 0–5 V systems. Input bias current remains below 60 pA (25°C), preserving signal integrity in high-impedance sensor interfaces like thermocouples and piezoresistive elements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Max 10 mV at 25°C - sets baseline DC error in precision amplification stages |
| Supply Current (dual) | Typ 34 µA at 5 V - enables multi-year battery life in remote sensor nodes |
| Input Impedance | 10¹² Ω typical - prevents loading of high-Z sources like pH electrodes or capacitive sensors |
| Common-Mode Range | –0.2 V to 3.5 V at 5 V - allows input signals below ground in single-supply configurations |
| Output Swing | Down to GND (1 mV typ low-level) - supports full-scale ADC utilization without level-shifting |
| Unity-Gain Bandwidth | 85 kHz at 5 V - sufficient for DC–10 kHz sensor signal conditioning (e.g., pressure, temperature) |
| CMRR | Min 65 dB (0°C–70°C) - rejects noise from shared power rails in industrial I/O modules |
Pinout & Package
Package: SOIC-8 (D suffix), 3.9 mm × 4.9 mm body, 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN+ | Noninverting input, Channel 1 | High-impedance node for sensor signal injection; accepts voltages down to –0.2 V |
| 1IN– | Inverting input, Channel 1 | Feedback path connection point; matched to 1IN+ for precision differential gain |
| 1OUT | Output, Channel 1 | Rail-to-rail capable; drives 1 MΩ loads to within 1 mV of GND |
| GND | Ground reference | Low-impedance return for both channels; must be star-connected in mixed-signal PCBs |
| 2IN+ | Noninverting input, Channel 2 | Independent second channel for signal buffering or active filtering |
| 2IN– | Inverting input, Channel 2 | Supports configurable gain stages without cross-channel coupling |
| 2OUT | Output, Channel 2 | Electrically isolated from 1OUT; enables dual-path signal processing |
| VDD | Positive supply | Accepts 3–16 V; powers both op-amps simultaneously with no sequencing required |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 95 µW total at 5 V - extends battery life in portable gas detectors and wireless field devices |
| Latch-up immunity | Designed-in protection per JEDEC JESD78 - prevents catastrophic failure during overvoltage transients |
| ESD protection | 2000 V HBM rating - reduces handling sensitivity and improves manufacturing yield |
| Offset voltage stability | 0.1 µV/month drift - maintains calibration integrity over years in unattended monitoring systems |
| Single-supply operation | Valid from 3 V - eliminates need for split supplies in cost-sensitive industrial controllers |
Applications
| Smoke and Heat Detector | Pressure Transmitter |
|---|---|
Use Scenario: Amplifying low-level ionization chamber or thermistor signals in residential fire alarms. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with rail-to-rail output driving comparator inputs. Use Value: 10 mV VIO and sub-60 pA IIB prevent false triggers caused by offset drift or sensor leakage currents. |
Use Scenario: Conditioning bridge output from MEMS pressure sensors in HVAC control systems. IC Role / Device Role / Timing Role: Instrumentation amplifier front-end with programmable gain and offset nulling. Use Value: Common-mode input range extending below GND enables direct connection to unbuffered Wheatstone bridges. |
| Temperature Transmitter | Motion Detector |
Use Scenario: Linearizing and scaling RTD or thermocouple outputs for 4–20 mA loop transmission. IC Role / Device Role / Timing Role: Low-drift signal conditioner with cold-junction compensation interface. Use Value: 0.1 µV/month VIO drift ensures <±0.1°C accuracy over 5-year field deployment without recalibration. |
Use Scenario: Amplifying weak pyroelectric sensor outputs in PIR-based occupancy sensors. IC Role / Device Role / Timing Role: High-input-impedance AC-coupled preamplifier with adjustable gain. Use Value: 10¹² Ω input impedance preserves signal amplitude from high-Z PIR elements without attenuation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462CD | Lower VIO (2 mV max), higher supply current (550 µA), rail-to-rail I/O | Better DC accuracy but 16× higher power - unsuitable for battery operation | Select when precision outweighs power budget; verify thermal derating in SOIC-8 |
| LMV358IDR | Higher VIO (7 mV max), wider bandwidth (1 MHz), same 34 µA IDD | Supports faster signal paths (e.g., ultrasonic sensing) but less stable DC offset | Prefer for AC-coupled applications requiring >100 kHz response; avoid for long-term DC stability |
Compared with TLV2462CD and LMV358IDR, the TLC27L2CD uniquely balances ultra-low power (34 µA), industry-grade temperature range (0°C–70°C), and proven long-term offset stability - making it optimal for maintenance-free, low-duty-cycle sensor nodes where battery life and calibration retention are critical.
Availability
TLC27L2CD is available at Aetrix Electronics and suitable for smoke detector design, pressure transmitter production, and temperature sensor module development requiring stable component supply across extended product lifecycles.
Supply support for TLC27L2CD 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 experience in precision signal chain solutions.
The TLC27Lx family was designed specifically for low-power, high-impedance sensor interfacing in industrial and safety-critical measurement systems - leveraging LinCMOS™ technology to merge CMOS input advantages with bipolar-like stability.
FAQ
What is the maximum operating temperature range for the TLC27L2CD?
The TLC27L2CD is characterized for operation from 0°C to 70°C, matching the C-suffix industrial temperature grade. It maintains specified electrical performance-including 10 mV max input offset voltage and 34 µA typical supply current-across this full range, making it suitable for enclosed control panels and non-extreme environmental deployments.
Does the TLC27L2CD support true single-supply operation with inputs below ground?
Yes, the TLC27L2CD supports true single-supply operation with its common-mode input voltage range extending to –0.2 V at 5 V supply. This allows direct connection of transducer outputs referenced below ground-such as unbuffered Wheatstone bridges-without external level-shifting circuitry, simplifying PCB layout and reducing component count in the TLC27L2CD signal path.
What is the typical input bias current of the TLC27L2CD at 25°C?
The typical input bias current of the TLC27L2CD at 25°C is 0.6 pA, with a maximum of 60 pA across the 0°C to 70°C range. This ultra-low value preserves signal integrity in high-impedance sensor interfaces, such as thermocouples, piezoelectric elements, and pH electrodes, where even nanoamp-level leakage would introduce significant measurement error in the TLC27L2CD application circuit.
Can the TLC27L2CD drive a 1 MΩ load while maintaining rail-to-rail output swing?
Yes, the TLC27L2CD delivers rail-to-rail output swing into a 1 MΩ load: low-level output is typically 1 mV above GND and high-level output reaches 4.1 V at 5 V supply. This capability ensures full utilization of 12-bit and 16-bit ADC input ranges without external level-shifting, directly supporting precision data acquisition in TLC27L2CD-based sensor signal chains.
Is the TLC27L2CD pin-compatible with other devices in the TLC27Lx family?
Yes, the TLC27L2CD shares identical SOIC-8 pinout and footprint with all C-suffix variants in the TLC27Lx family-including TLC27L2ACD, TLC27L2BCD, and TLC27L7CD-enabling drop-in upgrades for improved offset voltage grades without PCB redesign. All maintain identical pin functions, supply requirements, and thermal characteristics in the TLC27L2CD package configuration.
TLC27L2CD 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:
- 0.03V/µs
- Gain Bandwidth Product:
- 110 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.6 pA
- Voltage - Input Offset:
- 1.1 mV
- Current - Supply:
- 20µA (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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC27L2CD FAQ
1.How can I place an order for TLC27L2CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L2CD 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 TLC27L2CD reliable?
The price and inventory of TLC27L2CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L2CD is usually 5 days.
3.What payment methods are accepted for TLC27L2CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L2CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L2CD?
TLC27L2CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L2CD 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 TLC27L2CD?
For technical support, including TLC27L2CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L2CD requirements.
6.How does Aetrix verify that TLC27L2CD is sourced from the original manufacturer or authorized distributors?
All TLC27L2CD 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 TLC27L2CD meets industry standards.
7.What is the process for return or replacement of TLC27L2CD?
All TLC27L2CD units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L2CD, 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 TLC27L2CD part is unused and in its original packaging.
Return procedure for TLC27L2CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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