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Texas Instruments TLC27L1CDRG4
- Part No.:
- TLC27L1CDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC27L1CDRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,285
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Product details
Overview
TLC27L1CDRG4 from Texas Instruments is a low-power, single-supply operational amplifier in an 8-pin SOIC package, featuring 10 mV max input offset voltage (25°C), 68 nV/√Hz input noise at 1 kHz, and rail-to-rail output swing down to the negative rail. It operates from 3 V to 16 V over 0°C to 70°C and is optimized for battery-powered sensor signal conditioning in field transmitters.
For engineers reviewing the TLC27L1CDRG4 datasheet, TLC27L1CDRG4 pinout, TLC27L1CDRG4 application, or TLC27L1CDRG4 equivalent, key selection criteria include its ultra-low supply current (10–17 µA), high input impedance (10¹² Ω), extended common-mode range below ground, and LinCMOS process stability for long-term offset drift (0.1 µV/month).
Technical Context
The TLC27L1CDRG4 uses Texas Instruments' silicon-gate LinCMOS process, delivering superior offset-voltage stability versus metal-gate alternatives. Its input stage supports single-supply operation with common-mode voltage extending 0.2 V below the negative rail, and its output drives to within 50 mV of the negative rail under no load.
It exhibits low-frequency precision characteristics: 50–870 V/mV large-signal gain, 65–94 dB CMRR, and 70–98 dB supply rejection - all specified across 0°C to 70°C. The device incorporates internal ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V - enables direct interface with 3.3 V, 5 V, and 12 V systems without level-shifting. |
| Input Offset Voltage (max) | 10 mV at 25°C - sets baseline DC error budget for precision sensor amplification stages. |
| Supply Current (typ) | 10–17 µA - supports multi-year operation on coin-cell or AA batteries in remote monitoring nodes. |
| Input Impedance | 10¹² Ω - minimizes loading on high-impedance sources like pH electrodes or piezoelectric sensors. |
| Input Noise Density | 68 nV/√Hz at 1 kHz - suitable for low-frequency industrial transducer signals without excessive filtering. |
| Common-Mode Range | Extends 0.2 V below negative rail - allows direct sensing of ground-referenced or slightly negative signals. |
| Output Swing (low) | ≤50 mV above negative rail - preserves dynamic range in single-supply configurations with grounded reference. |
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 / NC | Legacy bias-select pin; unconnected on new silicon - leave floating or tie to GND per layout guidance. |
| 2 (IN−) | Inverting input | Differential input node; high-impedance CMOS input requiring guarded routing in sensitive analog sections. |
| 3 (IN+) | Noninverting input | Differential input node; supports rail-to-rail common-mode range including below GND. |
| 4 (GND) | Ground reference | Negative power rail and signal reference; requires low-impedance connection to system ground plane. |
| 5 (OFFSET N2) | Offset adjustment / NC | Legacy bias-select pin; unconnected on new silicon - leave floating or tie to GND. |
| 6 (OUT) | Amplifier output | Capable of sourcing/sinking ±30 mA; output swings to within 50 mV of GND and up to VDD − 1 V. |
| 7, 8 (VDD) | Positive supply | Dual VDD pins reduce supply path inductance; both must be decoupled with 0.1 µF ceramic capacitors near the package. |
Key Features
| Feature | Design Value |
|---|---|
| Low power consumption | 10–17 µA supply current enables >10-year battery life in wireless sensor nodes. |
| Rail-to-rail output (negative side) | Output reaches within 50 mV of GND, maximizing usable dynamic range in 3.3 V or 5 V single-supply systems. |
| Extended common-mode range | Inputs operate 0.2 V below GND, supporting direct interface with grounded thermocouples or shunt-based current sensing. |
| ESD protection | 2000 V HBM rating reduces risk of field failure during handling or PCB assembly. |
| LinCMOS process stability | 0.1 µV/month typical offset drift ensures calibration longevity in unattended field installations. |
Applications
| Smoke and heat detector | Pressure transmitter |
|---|---|
Use Scenario: Amplifies low-level ionization chamber or thermistor signals in residential/commercial fire alarm units. IC Role / Device Role / Timing Role: Precision DC-coupled signal conditioner with stable offset for analog smoke concentration measurement. Use Value: 10 mV max VIO and 0.1 µV/month drift ensure consistent alarm thresholds over 10+ years without recalibration. | Use Scenario: Front-end amplifier for bridge-based pressure sensors in HVAC or industrial process control systems. IC Role / Device Role / Timing Role: Low-power instrumentation amplifier driver with rail-to-rail output for 4–20 mA loop interface ICs. Use Value: 3 V to 16 V operation and 10¹² Ω input impedance prevent sensor loading and support wide supply headroom. |
| Flow transmitter | Temperature transmitter |
Use Scenario: Signal conditioning of turbine or ultrasonic flow sensor outputs in water/gas metering applications. IC Role / Device Role / Timing Role: Low-noise, low-drift gain stage preceding ADC or analog output driver. Use Value: 68 nV/√Hz noise and 65–94 dB CMRR preserve signal integrity in electrically noisy plant environments. | Use Scenario: Amplifying RTD or thermistor voltage in two-wire temperature transmitters deployed in remote locations. IC Role / Device Role / Timing Role: Single-supply op-amp enabling direct sensor biasing and output swing to GND in 3.3 V systems. Use Value: Common-mode range extending below GND allows Kelvin sensing and eliminates need for negative supply generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC27L2CDR | Dual-channel version in same SOIC-8 package; identical VIO, noise, and supply specs per channel. | Reduces board space in multi-sensor systems requiring two independent amplifiers (e.g., differential pressure + temperature). | Select when dual amplification is needed without increasing footprint or BOM count. |
| TLV2461CDR | Lower VIO (2 mV max), higher supply current (230 µA), rail-to-rail I/O, wider GBW (6.4 MHz). | Better DC accuracy but 20× higher quiescent current - unsuitable for battery operation beyond months. | Choose only if microamp-level power is not required and sub-mV offset is critical for system calibration. |
Compared with TLC27L2CDR, the TLC27L1CDRG4 saves board area in single-amplifier roles and avoids unnecessary channel crosstalk; versus TLV2461CDR, it delivers 23× lower supply current at the cost of modestly higher offset - making it optimal for decade-long battery deployments where µA-level efficiency is non-negotiable.
Availability
TLC27L1CDRG4 is available at Aetrix Electronics and suitable for smoke detectors, field transmitters, motion detectors, and remote battery-powered sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for TLC27L1CDRG4 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 expertise in precision amplifiers and industrial-grade signal chains.
The TLC27L1x family was designed specifically for low-power, high-impedance sensor interfacing in industrial field instruments - emphasizing long-term offset stability, single-supply usability, and robustness in harsh environments.
FAQ
What is the maximum operating temperature range for the TLC27L1CDRG4?
The TLC27L1CDRG4 is characterized for operation from 0°C to +70°C. This C-suffix grade is intended for commercial and industrial indoor applications where ambient temperatures remain within this range. Operation outside this range may result in parametric degradation or functional failure, and is not guaranteed by Texas Instruments' specifications.
Does the TLC27L1CDRG4 support true rail-to-rail input operation?
The TLC27L1CDRG4 supports common-mode input voltage down to 0.2 V below the negative rail (GND), but does not extend fully to the positive rail - the upper limit is typically VDD − 1.2 V at 25°C. Its input stage is optimized for single-supply use with ground-referenced signals, not full rail-to-rail input swing.
Can the OFFSET N1 and OFFSET N2 pins on the TLC27L1CDRG4 be used for external trimming?
No - on the TLC27L1CDRG4 (new silicon revision), OFFSET N1 (Pin 1) and OFFSET N2 (Pin 5) are internally unconnected (NC). These pins were used for bias-select on legacy silicon but serve no function in current production. They should be left floating or tied to GND; no external trimming capability exists.
What is the typical slew rate of the TLC27L1CDRG4 at 5 V supply?
The typical slew rate of the TLC27L1CDRG4 is 0.03 V/µs at VDD = 5 V, measured under unity-gain conditions with RL = 1 MΩ and CL = 20 pF. This value decreases slightly at lower temperatures and increases marginally at higher supply voltages - e.g., 0.05 V/µs at 10 V - reflecting its low-power, low-speed design target.
Is the TLC27L1CDRG4 suitable for driving capacitive loads?
The TLC27L1CDRG4 is not optimized for heavy capacitive loads. Phase margin drops significantly above 20 pF, and stability is only guaranteed with ≤20 pF total capacitive load at the output. For loads exceeding this, an external isolation resistor (e.g., 10–100 Ω) between the output and capacitance is recommended to maintain stability.
TLC27L1CDRG4 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:
- Discontinued at Digi-Key
- 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
TLC27L1CDRG4 FAQ
1.How can I place an order for TLC27L1CDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L1CDRG4 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 TLC27L1CDRG4 reliable?
The price and inventory of TLC27L1CDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L1CDRG4 is usually 5 days.
3.What payment methods are accepted for TLC27L1CDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L1CDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L1CDRG4?
TLC27L1CDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L1CDRG4 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 TLC27L1CDRG4?
For technical support, including TLC27L1CDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L1CDRG4 requirements.
6.How does Aetrix verify that TLC27L1CDRG4 is sourced from the original manufacturer or authorized distributors?
All TLC27L1CDRG4 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 TLC27L1CDRG4 meets industry standards.
7.What is the process for return or replacement of TLC27L1CDRG4?
All TLC27L1CDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L1CDRG4, 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 TLC27L1CDRG4 part is unused and in its original packaging.
Return procedure for TLC27L1CDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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