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Texas Instruments TLC27L2IP
- Part No.:
- TLC27L2IP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC27L2IP.pdf
- Description:
- IC CMOS 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:998
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Product details
Overview
TLC27L2IP from Texas Instruments is a precision dual CMOS operational amplifier optimized for low-power, single-supply sensor signal conditioning in industrial and remote applications. 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 with common-mode input range extending below ground - enabling direct interfacing with transducers operating near 0 V.
For engineers reviewing the TLC27L2IP datasheet, TLC27L2IP pinout, TLC27L2IP application, or TLC27L2IP equivalent, this device is selected for battery-powered field transmitters, smoke/heat detectors, and motion sensors where micropower operation, input offset stability over temperature, and negative-rail input capability are critical design requirements.
Technical Context
The TLC27L2IP uses Texas Instruments' LinCMOS™ silicon-gate process to achieve high input impedance (10¹² Ω typ), sub-60 pA input bias current (25°C), and latch-up immunity - distinguishing it from bipolar op amps while avoiding their power penalties. Its architecture supports stable unity-gain operation (34° phase margin) and operates across 4 V to 16 V supply rails.
It features internal ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2), and its I-suffix qualification ensures guaranteed performance from −40°C to +85°C - making it suitable for industrial-grade analog front-ends where long-term parametric drift must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 10 mV at 25°C - sets baseline DC error in precision gain stages and sensor bridges |
| Supply Current (typ) | 34 µA at 5 V - enables multi-year battery life in wireless sensor nodes |
| Input Bias Current (max) | 600 pA at +85°C - preserves high-impedance source integrity (e.g., pH electrodes, piezoresistive sensors) |
| Common-Mode Input Range | Extends to −0.2 V below GND at 5 V - allows direct connection to grounded-sensor configurations |
| Output Voltage Swing | Within 50 mV of GND and within 0.9 V of VDD - supports wide dynamic range in single-supply systems |
| Unity-Gain Bandwidth | 85 kHz at 5 V - sufficient for DC–10 kHz sensor signal amplification and filtering |
| CMRR (min) | 60 dB over full temp range - rejects noise from shared power rails in mixed-signal PCBs |
Pinout & Package
Package: 8-pin PDIP (Plastic Dual In-line Package), 0.3 inch body width, through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN+ | Noninverting input, Channel 1 | High-impedance node for reference or sensor signal injection; accepts voltages down to −0.2 V |
| 1IN− | Inverting input, Channel 1 | Feedback or differential sensing node; matched to 1IN+ for common-mode rejection |
| 1OUT | Output, Channel 1 | Capable of sourcing/sinking ±30 mA; swings within 50 mV of GND and 0.9 V of VDD |
| GND | Ground / Negative supply | Reference for both inputs and outputs; common return path for dual-channel operation |
| 2IN+ | Noninverting input, Channel 2 | Independent high-Z input for second sensor or signal path; same specs as 1IN+ |
| 2IN− | Inverting input, Channel 2 | Independent feedback node; electrically isolated from Channel 1 per datasheet isolation specs |
| VDD | Positive supply | Accepts 4 V to 16 V; powers both amplifiers; decoupling required per layout guidelines |
| NC | No connect | Pin 7 is unconnected - no internal bond wire; must remain floating or grounded per TI recommendation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 34 µA supply current enables >10-year operation on a single CR2032 coin cell in intermittent-sampling systems |
| Input offset voltage drift | 0.1 µV/month (including first 30 days) - ensures calibration stability in sealed field instruments |
| Rail-to-rail output | Output reaches within 50 mV of GND and within 0.9 V of VDD - maximizes ADC utilization in 5 V systems |
| Extended common-mode range | Inputs operate down to −0.2 V - eliminates need for level-shifting circuitry with grounded transducers |
| ESD protection | 2000 V HBM rating - reduces handling sensitivity and improves manufacturing yield in automated assembly |
Applications
| Smoke and Heat Detector | Pressure Transmitter |
|---|---|
Use Scenario: Battery-powered residential smoke alarm with thermistor-based heat detection and photoelectric smoke chamber. IC Role / Device Role / Timing Role: TLC27L2IP amplifies low-level thermistor voltage changes and buffers photodiode current via transimpedance configuration. Use Value: Sub-34 µA quiescent current extends 9V battery life beyond 5 years; rail-to-rail output drives comparator directly without level shifters. | Use Scenario: 4–20 mA loop-powered industrial pressure transmitter using silicon piezoresistive sensor bridge. IC Role / Device Role / Timing Role: TLC27L2IP performs bridge excitation buffering and differential signal amplification before current-loop DAC stage. Use Value: 600 pA max input bias current prevents bridge imbalance errors; −40°C to +85°C rating ensures reliability in outdoor enclosures. |
| Flow Transmitter | Motion Detector |
Use Scenario: Electromagnetic flow meter with microcontroller-based signal processing and RS-485 output. IC Role / Device Role / Timing Role: TLC27L2IP conditions induced voltage signals from flow tube electrodes and provides anti-aliasing filtering. Use Value: 85 kHz unity-gain bandwidth supports accurate measurement up to 10 kHz flow harmonics; CMRR ≥60 dB suppresses EMI from pump motors. | Use Scenario: PIR-based occupancy sensor with ambient light compensation and wake-on-motion logic. IC Role / Device Role / Timing Role: TLC27L2IP amplifies weak PIR sensor output and compares against adjustable threshold using second channel. Use Value: Dual-channel integration reduces BOM count; input offset drift <0.1 µV/month prevents false triggers during seasonal temperature shifts. |
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 |
|---|---|---|---|
| TLV2462IP | Lower input offset (2 mV max), higher supply current (550 µA), rail-to-rail I/O, wider temp range (−40°C to +125°C) | Better DC accuracy but 16× higher power - unsuitable for battery-critical designs | Select when precision outweighs power; avoid if >100 µA total system budget |
| LMV358IP | Higher input offset (7 mV max), lower cost, 120 µA supply current, no extended common-mode range (inputs limited to GND–VDD) | Lacks negative-rail input - requires external biasing for grounded sensors | Select for cost-sensitive, line-powered applications where sensor interface is AC-coupled or biased above GND |
Compared with TLV2462IP and LMV358IP, the TLC27L2IP uniquely balances micropower operation (34 µA), negative-rail input capability, and industrial temperature range - making it irreplaceable in low-power, grounded-sensor analog front-ends where long-term offset stability is mandatory.
Availability
TLC27L2IP is available at Aetrix Electronics and suitable for smoke detector design, pressure transmitter development, and motion sensor prototyping requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TLC27L2IP 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 TLC27Lx family was designed specifically for ultra-low-power, precision analog signal conditioning in battery-operated and harsh-environment instrumentation - emphasizing offset stability, input impedance, and single-supply usability.
FAQ
What is the maximum operating temperature range for the TLC27L2IP?
The TLC27L2IP is an I-suffix device, characterized for operation from −40°C to +85°C. This rating is guaranteed per datasheet Section 5.3 and applies across all electrical specifications including input offset voltage, supply current, and common-mode range - making it suitable for industrial control cabinets and outdoor sensor housings without derating.
Does the TLC27L2IP support true single-supply operation with inputs referenced to ground?
Yes. The TLC27L2IP's common-mode input voltage range extends to −0.2 V at 5 V supply, allowing direct connection of grounded-sensor outputs (e.g., strain gauge bridges, thermocouples with cold-junction compensation) without external level-shifting circuitry - a key enabler for simplified, low-component-count analog front-ends.
What is the typical supply current of the TLC27L2IP at 5 V and 25°C?
The typical supply current of the TLC27L2IP is 34 µA at 5 V and 25°C, as specified in Section 5.4 Electrical Characteristics (I-suffix, VDD = 5 V). This value represents combined current for both amplifiers under no-load conditions and forms the basis for battery-life calculations in energy-constrained applications.
Is Pin 7 of the TLC27L2IP (PDIP package) connected internally?
No. Pin 7 of the TLC27L2IP in the 8-pin PDIP package is designated NC (No Connect) per Table 4-1 Pin Functions. It has no internal bond wire and must remain unconnected - grounding or driving it may cause unpredictable behavior or violate absolute maximum ratings.
How does the input offset voltage drift specification apply to long-term system calibration?
The TLC27L2IP specifies input offset voltage drift as "typically 0.1 μV/month, including the first 30 days." This quantifies long-term parametric stability - critical for field-deployed instruments like pressure transmitters where recalibration intervals exceed 12 months and thermal cycling cannot be fully controlled.
TLC27L2IP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- 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):
- 4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLC27L2IP FAQ
1.How can I place an order for TLC27L2IP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L2IP 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 TLC27L2IP reliable?
The price and inventory of TLC27L2IP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L2IP is usually 5 days.
3.What payment methods are accepted for TLC27L2IP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L2IP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L2IP?
TLC27L2IP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L2IP 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 TLC27L2IP?
For technical support, including TLC27L2IP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L2IP requirements.
6.How does Aetrix verify that TLC27L2IP is sourced from the original manufacturer or authorized distributors?
All TLC27L2IP 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 TLC27L2IP meets industry standards.
7.What is the process for return or replacement of TLC27L2IP?
All TLC27L2IP units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L2IP, 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 TLC27L2IP part is unused and in its original packaging.
Return procedure for TLC27L2IP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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