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Texas Instruments TLC27L1IDR
- Part No.:
- TLC27L1IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC27L1IDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,273
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Product details
Overview
TLC27L1IDR from Texas Instruments is a single, low-power LinCMOS operational amplifier optimized for single-supply operation with rail-to-rail output swing, 10 mV max input offset voltage at 25°C, 68 nV/√Hz input noise at 1 kHz, and 17 µA typical supply current at 5 V. It serves as a precision signal-conditioning front-end in battery-powered sensor transmitters requiring stable DC performance over −40°C to +85°C.
For engineers reviewing the TLC27L1IDR datasheet, TLC27L1IDR pinout, TLC27L1IDR application, or TLC27L1IDR equivalent, key selection criteria include its guaranteed input offset voltage (10 mV max), ultra-low quiescent current (17 µA typ), extended common-mode range (down to −0.2 V), and SOIC-8 package compatibility with legacy PCB layouts for field transmitter upgrades.
Technical Context
The TLC27L1IDR uses Texas Instruments' silicon-gate LinCMOS process, delivering high input impedance (10¹² Ω typ) and low bias current (0.6 pA typ at 25°C) without bipolar power penalties. Its architecture supports single-supply operation from 4 V to 16 V across −40°C to +85°C, with common-mode input voltage extending 0.2 V below ground and output swinging to the negative rail.
It features internal ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2), latch-up immunity, and offset adjustment pins (OFFSET N1/N2) retained for legacy silicon compatibility-though functionally NC on new production. The device exhibits 85 kHz unity-gain bandwidth and 34° phase margin at 5 V, enabling stable low-frequency instrumentation use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4 V to 16 V - Enables direct interface with 5 V or 12 V industrial rails and battery systems without regulation. |
| Input Offset Voltage (max) | 10 mV at 25°C - Sets baseline DC error budget for precision sensor amplification in pressure/temperature transmitters. |
| Supply Current (typ) | 17 µA at 5 V - Supports >10-year battery life in remote, low-duty-cycle field sensors. |
| Input Noise Density | 68 nV/√Hz at 1 kHz - Sufficient for sub-mV-level analog signal conditioning in smoke detectors and motion sensors. |
| Common-Mode Input Range | −0.2 V to VDD − 1.5 V - Allows direct sensing of signals referenced below ground, e.g., thermocouple cold-junction compensation. |
| Output Voltage Swing | Includes negative rail - Permits true single-supply operation with 0 V reference outputs, eliminating need for dual supplies. |
| Unity-Gain Bandwidth | 85 kHz at 5 V - Suitable for DC–10 kHz signal paths in analog front-ends for flow, level, and temperature transmitters. |
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 | Input (legacy) | NC on new silicon; originally used for IN− offset trim - no external connection required in modern designs. |
| 2 - IN− | Inverting input | High-impedance node (10¹² Ω) for feedback network attachment in inverting amplifier configurations. |
| 3 - IN+ | Noninverting input | Accepts sensor signals directly; common-mode range extends below GND for unipolar signal conditioning. |
| 4 - GND | Ground reference | Negative power rail and signal reference; must be low-impedance for noise-sensitive analog circuits. |
| 5 - OFFSET N2 | Input (legacy) | NC on new silicon; originally used for IN+ offset trim - left unconnected per TI design guidelines. |
| 6 - OUT | Amplifier output | Rail-to-rail capable; drives 1 MΩ loads directly; limited sourcing/sinking to ±30 mA absolute max. |
| 7, 8 - VDD | Positive supply | Dual-pin power entry improves PSRR and reduces supply impedance; accepts 4–16 V DC. |
Key Features
| Feature | Design Value |
|---|---|
| Low input offset drift | 0.1 µV/month - Ensures long-term calibration stability in field-deployed transmitters without periodic recalibration. |
| Single-supply operation | 4 V min supply - Eliminates need for charge pumps or split supplies in portable and remote sensor nodes. |
| ESD protection | 2000 V HBM - Reduces risk of handling damage during assembly and field service in industrial environments. |
| High input impedance | 10¹² Ω typical - Minimizes loading on high-impedance sources like piezoresistive pressure sensors and thermistors. |
| Latch-up immunity | Designed-in - Prevents catastrophic failure during overvoltage transients or supply sequencing faults. |
Applications
| Pressure Transmitter | Smoke Detector |
|---|---|
|
Use Scenario: Amplifies millivolt-level bridge output from MEMS pressure sensors in HVAC and process control systems. IC Role / Device Role / Timing Role: Precision DC-coupled signal conditioner with rail-to-rail output driving ADC input or 4–20 mA loop driver. Use Value: 10 mV max VIO and 0.1 µV/month drift maintain <0.1% full-scale error over 5 years without recalibration. |
Use Scenario: Buffers ionization chamber current in residential and commercial smoke alarms. IC Role / Device Role / Timing Role: Ultra-low-current transimpedance amplifier front-end operating from coin-cell batteries. Use Value: 17 µA supply current enables >10-year battery life; 68 nV/√Hz noise ensures reliable detection of sub-picoamp smoke currents. |
| Temperature Transmitter | Motion Detector |
|
Use Scenario: Conditions RTD or thermistor voltage in industrial temperature monitoring nodes. IC Role / Device Role / Timing Role: Low-drift, low-power buffer and gain stage interfacing with sigma-delta ADCs. Use Value: −0.2 V to VDD − 1.5 V common-mode range allows direct connection to grounded-sensor configurations without level-shifting. |
Use Scenario: Amplifies weak pyroelectric sensor output in PIR-based occupancy sensors. IC Role / Device Role / Timing Role: High-impedance AC-coupled preamplifier with adjustable gain and low-frequency roll-off. Use Value: 10¹² Ω input impedance prevents signal attenuation from high-Z PIR elements; SOIC-8 footprint simplifies layout in space-constrained modules. |
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 |
|---|---|---|---|
| TLC27L1CDR | Same electrical specs but rated for 0°C to 70°C only; 10 mV VIO max at 25°C; identical SOIC-8 package. | Not qualified for automotive or outdoor industrial use where −40°C operation is required. | Select TLC27L1CDR only for cost-sensitive commercial-grade indoor applications with ambient temperature control. |
| TLV2461IDR | Lower VIO (2 mV max), higher supply current (225 µA typ), rail-to-rail I/O, wider GBW (650 kHz), same SOIC-8. | Better DC precision but 13× higher quiescent current - unsuitable for multi-year battery operation. | Choose TLV2461IDR when higher speed and lower offset outweigh battery life constraints, e.g., in mains-powered data loggers. |
Compared with TLC27L1CDR, the TLC27L1IDR adds −40°C capability critical for field transmitters; compared with TLV2461IDR, it trades bandwidth and offset for 13× lower supply current - making it the sole choice for energy-constrained, wide-temperature industrial sensing.
Availability
TLC27L1IDR is available at Aetrix Electronics and suitable for pressure transmitter design, smoke detector manufacturing, temperature sensor module integration, and motion detector development requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TLC27L1IDR 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 over 50 years of innovation in precision analog ICs.
The TLC27L1x family was designed specifically for low-power, high-impedance sensor signal conditioning in industrial field transmitters and battery-operated safety devices - emphasizing long-term DC stability and single-supply usability.
FAQ
What is the maximum operating temperature range for the TLC27L1IDR?
The TLC27L1IDR is characterized for continuous operation from −40°C to +85°C. This extended temperature rating is confirmed in Section 5.3 (Recommended Operating Conditions) and Section 5.7 (Electrical Characteristics, I Suffix) of the official TI datasheet SLOS154C. It makes the TLC27L1IDR suitable for outdoor industrial environments, automotive under-hood sensing, and uncontrolled building automation deployments where thermal extremes occur.
Does the TLC27L1IDR support true rail-to-rail output swing?
Yes, the TLC27L1IDR output voltage swing includes the negative rail (GND) and reaches within ~1.5 V of VDD under load, as specified in the VICR and VOH/VOL parameters. At VDD = 5 V and 25°C, VOL is ≤50 mV and VOH is ≥3.2 V into 1 MΩ. This enables true single-supply operation without level-shifting circuitry - a key advantage over older bipolar op-amps in the TLC27L1IDR's target applications.
Are the OFFSET N1 and OFFSET N2 pins functional on the TLC27L1IDR?
No - OFFSET N1 (Pin 1) and OFFSET N2 (Pin 5) are non-connected (NC) on current-production TLC27L1IDR units. TI documentation explicitly states these pins are "NC, non internally connected" on new silicon. They were used for bias-select trimming on legacy versions but require no external connection in modern designs using the TLC27L1IDR.
What is the typical input bias current of the TLC27L1IDR at 25°C?
The typical input bias current of the TLC27L1IDR is 0.6 pA at 25°C, with a maximum of 60 pA over the full −40°C to +85°C range. This ultra-low value is enabled by TI's LinCMOS process and is critical for interfacing with high-impedance sensors such as thermistors, RTDs, and piezoresistive elements without introducing significant measurement error.
Can the TLC27L1IDR operate from a 3 V supply?
No - the TLC27L1IDR requires a minimum supply voltage of 4 V across its rated temperature range (−40°C to +85°C). While the C-suffix variant (e.g., TLC27L1CDR) supports 3 V at 0°C to 70°C, the I-suffix TLC27L1IDR is specified only down to 4 V. Attempting 3 V operation may result in undefined behavior, reduced output swing, or failure to meet AC/DC specifications.
TLC27L1IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.05V/µs
- Gain Bandwidth Product:
- 85 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):
- 4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC27L1IDR FAQ
1.How can I place an order for TLC27L1IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L1IDR 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 TLC27L1IDR reliable?
The price and inventory of TLC27L1IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L1IDR is usually 5 days.
3.What payment methods are accepted for TLC27L1IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L1IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L1IDR?
TLC27L1IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L1IDR 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 TLC27L1IDR?
For technical support, including TLC27L1IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L1IDR requirements.
6.How does Aetrix verify that TLC27L1IDR is sourced from the original manufacturer or authorized distributors?
All TLC27L1IDR 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 TLC27L1IDR meets industry standards.
7.What is the process for return or replacement of TLC27L1IDR?
All TLC27L1IDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L1IDR, 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 TLC27L1IDR part is unused and in its original packaging.
Return procedure for TLC27L1IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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