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Texas Instruments TLC27L7CD
- Part No.:
- TLC27L7CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC27L7CD.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,394
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Product details
Overview
TLC27L7CD from Texas Instruments is a precision dual CMOS operational amplifier optimized for low-power, single-supply sensor signal conditioning. It delivers 1 mV max input offset voltage (25°C), ultra-low 34 µA typical supply current (VDD = 5 V), and rail-to-rail output swing down to the negative rail - enabling accurate amplification in battery-powered field transmitters and smoke detectors.
For engineers reviewing the TLC27L7CD datasheet, TLC27L7CD pinout, TLC27L7CD application, or TLC27L7CD equivalent, key selection criteria include its 1 mV precision grade, −0.2 V to 3.5 V common-mode input range at 5 V supply, 85 kHz unity-gain bandwidth, LinCMOS™ input impedance >10¹² Ω, and SOIC-8 packaging for space-constrained industrial analog front-ends.
Technical Context
The TLC27L7CD uses Texas Instruments' silicon-gate LinCMOS™ process to achieve exceptional input offset voltage stability (0.1 µV/month drift) and high DC precision without bipolar power penalties. Its dual-channel architecture supports independent signal paths with matched performance across temperature.
It operates from 3 V to 16 V over 0°C to 70°C (C-suffix), supports single-supply operation with inputs extending below ground, and integrates ESD protection rated to 2000 V per MIL-STD-883C Method 3015.2 - critical for field-deployed sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIO max | 1000 µV at 25°C - enables high-accuracy DC-coupled amplification of microvolt-level sensor outputs |
| IDD typ | 34 µA at VDD = 5 V - supports multi-year battery life in remote transmitters |
| VICR | −0.2 V to 3.5 V at VDD = 5 V - allows direct interfacing with grounded sensors and single-supply ADCs |
| B1 | 85 kHz unity-gain bandwidth - sufficient for slow-varying process signals (e.g., pressure, temperature) |
| CMRR | 65–87 dB - rejects common-mode noise in industrial 4–20 mA loop environments |
| Input Z | >10¹² Ω - prevents loading of high-impedance sources like thermistors and piezoresistive elements |
| ESD rating | 2000 V HBM - ensures robustness during handling and field installation |
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 |
|---|---|---|
| 1IN+ | Noninverting input, Channel 1 | High-impedance node for differential sensing or reference biasing |
| 1IN– | Inverting input, Channel 1 | Feedback path connection point for closed-loop gain configuration |
| 1OUT | Output, Channel 1 | Rail-to-rail capable output driving ADC input or buffer stage |
| GND | Ground / negative supply | Reference for single-supply operation; accepts inputs below this rail |
| 2IN+ | Noninverting input, Channel 2 | Independent second channel for dual-sensor or signal-chain redundancy |
| 2IN– | Inverting input, Channel 2 | Configurable for instrumentation or difference amplification |
| VDD | Positive supply | Supports 3–16 V operation - compatible with Li-ion, 5 V, or 12 V systems |
| 2OUT | Output, Channel 2 | Second independent output for parallel processing or fault monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Input offset voltage drift | 0.1 µV/month - ensures long-term calibration stability in unattended field devices |
| Single-supply operation | Common-mode input extends below GND - eliminates need for dual supplies in sensor front-ends |
| Ultra-low power | 95 µW at 25°C, VDD = 5 V - enables energy harvesting and coin-cell operation |
| High input impedance | 10¹² Ω typical - preserves signal integrity from passive sensors without loading |
| Latch-up immunity | Designed-in protection - prevents destructive failure during overvoltage transients |
Applications
| Smoke and heat detector | Pressure transmitter |
|---|---|
Use Scenario: Amplifies low-level output from ionization or thermistor-based fire detection elements in residential/commercial alarm systems. IC Role / Device Role / Timing Role: Precision DC amplifier conditioning sub-mV sensor signals before ADC conversion. Use Value: 1 mV VIO and 0.1 µV/month drift ensure consistent alarm thresholds over 10+ years without recalibration. | Use Scenario: Signal conditioning stage in industrial 4–20 mA pressure transmitters using strain-gauge bridges. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end with matched gain and offset. Use Value: Rail-to-rail output swing and −0.2 V input capability enable full-scale use of 5 V ADCs with grounded bridge configurations. |
| Temperature transmitter | Motion detector |
Use Scenario: Linearizing and amplifying RTD or thermocouple outputs in HVAC and process control systems. IC Role / Device Role / Timing Role: Low-drift, low-power op-amp in analog signal chain preceding sigma-delta ADC. Use Value: 34 µA supply current and LinCMOS™ stability allow continuous operation on 24 V loop power with minimal self-heating error. | Use Scenario: Signal amplification for PIR sensor outputs in security lighting and occupancy controls. IC Role / Device Role / Timing Role: Dual op-amp implementing differential amplification and filtering of weak AC-coupled motion signals. Use Value: Dual-channel integration reduces PCB area and component count while maintaining channel matching for noise rejection. |
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 |
|---|---|---|---|
| TLV2772IDR | Higher 1.8–5.5 V supply range; 2.5 MHz GBW; 1.6 mV VIO max; rail-to-rail I/O | Better for higher-speed or wider supply designs; less suitable for ultra-low-power or extended temp ranges | Select when faster response or rail-to-rail input is required; not drop-in due to different pinout and higher quiescent current |
| OPA2333AIDR | Zero-drift architecture; 12 µV VIO max; 17 µA IDD; 350 kHz GBW; −40°C to +125°C | Superior DC accuracy and temperature stability; higher cost; requires external capacitors for stability | Choose for millivolt-level precision over wide temperature; not pin-compatible; requires layout revision |
Compared with TLV2772IDR and OPA2333AIDR, the TLC27L7CD offers the lowest power consumption and proven long-term drift performance in C-temp industrial environments, making it optimal for cost-sensitive, battery-operated, or legacy-design upgrade scenarios where moderate bandwidth suffices.
Availability
TLC27L7CD is available at Aetrix Electronics and suitable for smoke detectors, pressure transmitters, temperature transmitters, and motion detectors requiring stable component supply across industrial production cycles.
Supply support for TLC27L7CD 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The TLC27Lx family was designed specifically for precision, low-power, single-supply analog signal conditioning in field instrumentation - emphasizing long-term offset stability, high input impedance, and robustness in harsh environments.
FAQ
What is the maximum input offset voltage specification for TLC27L7CD at 25°C?
The TLC27L7CD has a maximum input offset voltage of 1000 µV (1 mV) at 25°C, as specified in the Electrical Characteristics table for C-suffix devices under VDD = 5 V conditions. This value is guaranteed across the 0°C to 70°C operating range up to 1500 µV, confirming its classification as a high-precision grade within the TLC27Lx family.
Does TLC27L7CD support true single-supply operation with inputs below ground?
Yes, the TLC27L7CD supports true single-supply operation with its common-mode input voltage range extending to −0.2 V at VDD = 5 V. This allows direct connection of grounded sensors (e.g., thermistors, bridge circuits) without level-shifting circuitry - a key feature enabled by its LinCMOS™ input stage and explicitly confirmed in the Recommended Operating Conditions section.
What is the typical supply current consumption of TLC27L7CD at 5 V?
The TLC27L7CD draws a typical supply current of 34 µA at VDD = 5 V and 25°C, with a maximum of 42 µA over the full 0°C to 70°C range. This ultra-low IDD enables multi-year operation from coin cells or energy-harvesting sources, and is validated in Section 5.4 Electrical Characteristics for C-suffix devices.
Is TLC27L7CD pin-compatible with other devices in the TLC27Lx family?
Yes, the TLC27L7CD shares identical SOIC-8 (D package) pinout and footprint with all C-suffix variants in the TLC27Lx family, including TLC27L2CD, TLC27L2ACD, and TLC27L2BCD. Pin functions - such as 1IN+, 1IN–, 1OUT, GND, 2IN+, 2IN–, VDD, and 2OUT - are fully consistent across these parts, enabling drop-in upgrades based on offset voltage grade.
What temperature range is supported by the TLC27L7CD part number?
The TLC27L7CD is characterized for operation from 0°C to 70°C, as indicated by its 'C' suffix. This commercial temperature grade is validated in Sections 5.3 (Recommended Operating Conditions) and 5.4–5.9 (Electrical and Operating Characteristics), and is distinct from I-suffix (−40°C to +85°C) and M-suffix (−55°C to +125°C) variants.
TLC27L7CD 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
TLC27L7CD FAQ
1.How can I place an order for TLC27L7CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L7CD 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 TLC27L7CD reliable?
The price and inventory of TLC27L7CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L7CD is usually 5 days.
3.What payment methods are accepted for TLC27L7CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L7CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L7CD?
TLC27L7CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L7CD 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 TLC27L7CD?
For technical support, including TLC27L7CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L7CD requirements.
6.How does Aetrix verify that TLC27L7CD is sourced from the original manufacturer or authorized distributors?
All TLC27L7CD 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 TLC27L7CD meets industry standards.
7.What is the process for return or replacement of TLC27L7CD?
All TLC27L7CD units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L7CD, 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 TLC27L7CD part is unused and in its original packaging.
Return procedure for TLC27L7CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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