My Inquiry
My Account
Texas Instruments TLC27L1CDR
- Part No.:
- TLC27L1CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC27L1CDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,809
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC27L1CDR from Texas Instruments is a single, low-power LinCMOS operational amplifier optimized for single-supply operation with rail-to-rail output swing down to the negative rail, 10 mV max input offset voltage at 25°C, 68 nV/√Hz input noise at 1 kHz, and 17 µA typical supply current - widely deployed in battery-powered field transmitters and smoke detectors.
For engineers reviewing the TLC27L1CDR datasheet, TLC27L1CDR pinout, TLC27L1CDR application, or TLC27L1CDR equivalent, key selection criteria include its 0°C to 70°C industrial temperature range, SOIC-8 package, ultra-low bias current (≤60 pA), wide 3–16 V supply range, and compatibility with legacy offset-adjust circuits on older silicon revisions.
Technical Context
The TLC27L1CDR implements a silicon-gate LinCMOS process enabling high input impedance (10¹² Ω) and stable offset voltage drift (0.1 µV/month), while supporting single-supply operation with common-mode input voltage extending below ground. Its internal ESD protection withstands 2000 V per MIL-STD-883C Method 3015.2.
It features dual offset-null pins (OFFSET N1 and OFFSET N2) that are functional on legacy silicon but NC on newer revisions. The device delivers 85 kHz unity-gain bandwidth at 5 V and maintains phase margin ≥34° across temperature, making it suitable for precision DC-coupled sensor signal conditioning without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V - enables direct use with 3.3 V, 5 V, and 12 V systems without regulation |
| Input Offset Voltage (max) | 10 mV at 25°C - defines worst-case DC error in precision gain stages and sensor bridges |
| Input Bias Current (max) | 60 pA at 25°C - preserves accuracy in high-impedance source applications like pH electrodes or photodiode amps |
| Common-Mode Input Range | Extends 0.2 V below negative rail - supports true single-supply operation with ground-referenced inputs |
| Output Swing | Includes negative rail - allows full-scale output near 0 V in unipolar systems |
| Supply Current (typ) | 17 µA at 25°C - enables multi-year battery life in remote wireless sensors |
| Input Noise Density | 68 nV/√Hz at 1 kHz - limits low-frequency measurement resolution in analog front-ends |
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 |
|---|---|---|
| OFFSET N1 (Pin 1) | Offset adjustment input | Functional on legacy silicon for IN− bias-select; NC on new silicon - requires verification against date code |
| IN− (Pin 2) | Inverting input | Differential input node; high-impedance CMOS gate with ≤60 pA bias current |
| IN+ (Pin 3) | Noninverting input | Differential input node; accepts common-mode voltages down to −0.2 V |
| GND (Pin 4) | Ground reference | Negative power rail connection; serves as signal return and reference for single-supply operation |
| OFFSET N2 (Pin 5) | Offset adjustment input | Functional on legacy silicon for IN+ bias-select; NC on new silicon - not usable for trimming on latest revisions |
| OUT (Pin 6) | Amplifier output | Capable of sourcing/sinking ±30 mA; swings to GND and within 1 V of VDD at light loads |
| VDD (Pin 7) | Positive supply | Main power input; decoupling capacitor required adjacent to pin for stability |
| VDD (Pin 8) | Positive supply | Second VDD connection - improves PSRR and reduces supply impedance in high-noise environments |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS process technology | Delivers 10¹² Ω input impedance and sub-pA bias current - critical for high-Z sensor interfacing |
| Single-supply operation | Supports 3–16 V supply with input common-mode range extending below GND - eliminates need for split supplies in portable designs |
| Rail-to-rail output (negative rail) | Enables full dynamic range utilization in 0–5 V systems - improves ADC utilization and signal-to-noise ratio |
| ESD protection (2000 V) | Meets MIL-STD-883C Method 3015.2 - reduces handling sensitivity and field failure risk during assembly |
| Latch-up immunity | Designed-in robustness against transient-induced parasitic thyristor activation - enhances reliability in industrial environments |
Applications
| Smoke and Heat Detector | Pressure Transmitter |
|---|---|
Use Scenario: Detecting minute ionization current changes in smoke chambers or thermistor voltage shifts in thermal sensors. IC Role / Device Role / Timing Role: Precision DC amplifier for low-level analog signal conditioning prior to ADC conversion. Use Value: Ultra-low input bias current (≤60 pA) prevents loading of high-impedance sensing elements, preserving signal integrity. | Use Scenario: Amplifying millivolt-level outputs from piezoresistive pressure sensors in HVAC or industrial process control. IC Role / Device Role / Timing Role: Low-drift, single-supply instrumentation amplifier front-end stage. Use Value: 10 mV max input offset and 0.1 µV/month drift ensure long-term calibration stability without frequent recalibration. |
| Flow Transmitter | Temperature Transmitter |
Use Scenario: Converting differential voltage from magnetic flow meter coils into a conditioned analog output. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail output amplifier driving 4–20 mA loop drivers or ADC references. Use Value: 68 nV/√Hz input noise minimizes added uncertainty in low-flow detection thresholds. | Use Scenario: Signal conditioning for RTD or thermistor bridges in building automation or environmental monitoring nodes. IC Role / Device Role / Timing Role: High-input-impedance buffer and gain stage for bridge excitation and output scaling. Use Value: Common-mode input range extending below GND allows direct interface with grounded-sensor configurations. |
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 |
|---|---|---|---|
| TLC27L2CDR | Dual-channel version in same SOIC-8 package; identical electrical specs per channel | Reduces board space in multi-sensor systems requiring two independent amplifiers | Select when needing dual amplification without increasing footprint or BOM count |
| TLV2461CDR | Lower input offset (2 mV max), higher quiescent current (23 µA typ), rail-to-rail I/O | Better DC accuracy but higher power draw - unsuitable for ultra-low-power battery nodes | Choose only if offset voltage is the dominant error source and power budget permits |
Compared with TLC27L2CDR and TLV2461CDR, the TLC27L1CDR offers the lowest supply current (17 µA) and widest supply range (3–16 V) among these three, making it optimal for cost-sensitive, long-life, single-channel industrial sensor interfaces where moderate DC precision suffices.
Availability
TLC27L1CDR is available at Aetrix Electronics and suitable for smoke detectors, field transmitters, and motion detectors requiring stable component supply over extended production lifecycles.
Supply support for TLC27L1CDR 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 amplifiers and industrial-grade ICs.
The TLC27L1x family was designed specifically for low-power, single-supply sensor signal conditioning in harsh industrial and safety-critical environments - emphasizing offset stability, ESD robustness, and wide-voltage operation.
FAQ
What is the operating temperature range for the TLC27L1CDR?
The TLC27L1CDR is characterized for operation from 0°C to +70°C. This C-suffix grade is intended for commercial and industrial equipment operating in controlled ambient environments. It supports supply voltages from 3 V to 16 V across this full temperature span, with guaranteed performance for input offset voltage, common-mode range, and output swing.
Does the TLC27L1CDR support rail-to-rail input?
No, the TLC27L1CDR does not support rail-to-rail input. Its common-mode input voltage range extends to −0.2 V (below GND) and up to VDD − 1.5 V at 25°C, depending on supply voltage. While it accepts inputs below ground - enabling true single-supply use - the upper limit remains limited, unlike modern rail-to-rail input amplifiers.
Are the OFFSET N1 and OFFSET N2 pins functional on the TLC27L1CDR?
OFFSET N1 (Pin 1) and OFFSET N2 (Pin 5) are functional for offset trimming only on legacy silicon revisions of the TLC27L1CDR. On newer silicon, both pins are internally unconnected (NC). Designers must verify the wafer lot or date code; TI recommends treating them as no-connect unless confirmed for a specific production batch.
What is the maximum capacitive load the TLC27L1CDR can drive stably?
The TLC27L1CDR maintains ≥34° phase margin with up to 20 pF capacitive load at unity gain, per Figure 5-29. Driving larger loads (e.g., >50 pF) risks instability and peaking; TI recommends isolating heavy capacitive loads with a series resistor or using a dedicated buffer stage when interfacing with ADC input capacitance or long traces.
How does the TLC27L1CDR compare to the TLC27L1ACDR in terms of input offset voltage?
The TLC27L1CDR has a maximum input offset voltage of 10 mV at 25°C, whereas the TLC27L1ACDR is the precision variant with 5 mV max. Both share identical package, pinout, supply range, and temperature grade (0°C to +70°C), so the A-grade part is a drop-in upgrade when tighter DC accuracy is required - at slightly higher cost and potentially lower inventory availability.
TLC27L1CDR 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:
- 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
TLC27L1CDR FAQ
1.How can I place an order for TLC27L1CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L1CDR 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 TLC27L1CDR reliable?
The price and inventory of TLC27L1CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L1CDR is usually 5 days.
3.What payment methods are accepted for TLC27L1CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L1CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L1CDR?
TLC27L1CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L1CDR 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 TLC27L1CDR?
For technical support, including TLC27L1CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L1CDR requirements.
6.How does Aetrix verify that TLC27L1CDR is sourced from the original manufacturer or authorized distributors?
All TLC27L1CDR 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 TLC27L1CDR meets industry standards.
7.What is the process for return or replacement of TLC27L1CDR?
All TLC27L1CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L1CDR, 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 TLC27L1CDR part is unused and in its original packaging.
Return procedure for TLC27L1CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC27L1CDR Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
