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Texas Instruments TLC27L9CDR
- Part No.:
- TLC27L9CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC27L9CDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,539
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Product details
Overview
TLC27L9CDR from Texas Instruments is a precision quad operational amplifier using LinCMOS™ technology, designed for ultra-low-power, single-supply sensor signal conditioning. It delivers 1 mV max input offset voltage (25°C), 10¹² Ω input impedance, 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 TLC27L9CDR datasheet, TLC27L9CDR pinout, TLC27L9CDR application, or TLC27L9CDR equivalent, this page provides verified specifications, SOIC-14 pin mapping, real-world use cases in industrial sensing, and two validated alternative op amps with documented parameter and temperature-range differences.
Technical Context
The TLC27L9CDR implements a silicon-gate LinCMOS™ input stage that achieves sub-picoampere bias current (0.6 pA typ at 25°C) and exceptional offset stability (0.1 µV/month drift), avoiding bipolar power penalties while retaining high DC precision. Its common-mode input range extends 0.2 V below GND, supporting true single-supply operation from 3 V to 16 V.
It features four independent amplifiers in one package, each with unity-gain bandwidth of 85 kHz (VDD = 5 V), slew rate of 0.03 V/µs, and phase margin of 34° - optimized for stable low-frequency instrumentation loops rather than high-speed signal processing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Max 1000 µV at 25°C - enables <1 LSB error in 10-bit ADC interfaces with gain ≤100 |
| Supply Voltage Range | 3 V to 16 V (0°C to 70°C) - supports direct connection to 3.3 V, 5 V, or 12 V rails without regulation |
| Input Impedance | 10¹² Ω typical - minimizes loading on high-Z sources like pH electrodes or piezoresistive sensors |
| Quiescent Current | 68 µA max per amplifier (4 amps total) - allows >10-year battery life in 25 µA average-current designs |
| Common-Mode Range | Extends 0.2 V below GND - permits accurate amplification of signals referenced to ground in single-supply systems |
| Output Swing | Drives to within 1 mV of GND and 0.9 V of VDD (at 1 MΩ load) - maximizes dynamic range in low-voltage data acquisition |
| ESD Rating | 2000 V HBM - meets industrial handling requirements without additional protection circuitry |
Pinout & Package
Package: SOIC-14 (D suffix), 8.65 mm × 3.91 mm body, 1.27 mm pitch, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN+ | Noninverting input, Channel 1 | High-impedance node for reference or sensor signal routing; accepts voltages down to –0.2 V |
| 1IN– | Inverting input, Channel 1 | Feedback node for closed-loop configurations; matched to 1IN+ for CMRR optimization |
| 1OUT | Output, Channel 1 | Capable of sourcing/sinking ±30 mA; swings to GND and up to VDD – 0.9 V |
| 2IN+, 2IN–, 2OUT | Inputs/Output, Channel 2 | Electrically identical to Channel 1; fully independent for multi-sensor conditioning |
| 3IN+, 3IN–, 3OUT | Inputs/Output, Channel 3 | Same specs as Ch1/Ch2; enables 3-channel analog front-end in single IC |
| 4IN+, 4IN–, 4OUT | Inputs/Output, Channel 4 | Final channel; supports simultaneous signal paths (e.g., sensor + reference + filter + buffer) |
| GND | Ground / Negative supply | Reference for all inputs and outputs; must be low-impedance for noise immunity |
| VDD | Positive supply | Single power rail; powers all four amplifiers; bypassing with 0.1 µF ceramic required |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 0.6 pA typical at 25°C - preserves signal integrity from nanoamp-level sources like photodiodes |
| Offset voltage stability | 0.1 µV/month drift - eliminates recalibration needs in sealed field instruments over multi-year deployments |
| Rail-to-rail output | Swings to GND and within 0.9 V of VDD - doubles usable voltage range vs. legacy op amps in 3.3 V systems |
| Latch-up immunity | Designed-in robustness against transient-induced latch-up - improves reliability in noisy industrial environments |
| Single-supply optimization | Input common-mode range includes GND; no dual-rail supply or level-shifting circuitry required |
Applications
| Smoke Detector Signal Conditioning | Pressure Transmitter Front-End |
|---|---|
|
Use Scenario: Amplifying weak ionization chamber current (pA–nA) in battery-operated residential smoke alarms. IC Role / Device Role / Timing Role: Quad amplifier configures transimpedance, filtering, reference buffering, and comparator hysteresis stages. Use Value: Sub-pA bias current prevents signal loss; 1 mV offset ensures consistent alarm threshold across temperature and aging. |
Use Scenario: Conditioning bridge output (1–10 mV full-scale) in 4–20 mA loop-powered pressure transmitters. IC Role / Device Role / Timing Role: First-stage instrumentation amp, excitation buffer, ratiometric reference driver, and output buffer. Use Value: 10¹² Ω input impedance avoids bridge imbalance; rail-to-rail output maximizes 24 V loop headroom. |
| Temperature Transmitter (RTD/Thermistor) | Level Transmitter (Capacitive) |
|
Use Scenario: Linearizing and amplifying RTD resistance changes (via constant-current excitation) in HVAC control units. IC Role / Device Role / Timing Role: Precision current source, differential amplifier, cold-junction compensation buffer, and output driver. Use Value: 0.1 µV/month offset drift maintains ±0.1°C accuracy over 5 years without field calibration. |
Use Scenario: Detecting capacitance shifts (0.1–10 pF) from liquid level changes in stainless-steel tanks. IC Role / Device Role / Timing Role: Capacitance-to-voltage converter, AC excitation generator, synchronous demodulator, and low-pass filter. Use Value: Ultra-low input current prevents charge injection errors; 1 mV offset enables sub-mm resolution in 10-bit ADC systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision quad op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC27L9IDR | Wider temp range (–40°C to +85°C) vs. TLC27L9CDR (0°C to 70°C); same offset (1 mV), bias current (0.7 pA), and SOIC-14 package | Required for outdoor or automotive-adjacent industrial enclosures; not needed for indoor climate-controlled installations | Select TLC27L9IDR when ambient operating temperature exceeds 70°C or drops below 0°C |
| TLV27L4CDR | Lower supply current (32 µA typ vs. 68 µA), higher offset (2 mV max), same SOIC-14 footprint and LinCMOS process | Better suited for ultra-low-power portable devices where 1 mV offset is non-critical; not recommended for precision metrology | Choose TLV27L4CDR only if power budget is tighter than 50 µA per amp and offset tolerance ≥2 mV is acceptable |
Compared with TLC27L9CDR, TLC27L9IDR extends thermal capability without sacrificing precision, while TLV27L4CDR trades offset accuracy for lower quiescent current - making TLC27L9CDR optimal for cost-sensitive, indoor, precision sensor nodes requiring guaranteed 1 mV performance at 25°C.
Availability
TLC27L9CDR is available at Aetrix Electronics and suitable for smoke detector manufacturing, pressure transmitter production, and temperature transmitter design requiring stable component supply and long-term obsolescence management.
Supply support for TLC27L9CDR 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 heritage in precision op amp design and industrial-grade reliability.
The TLC27Lx family was engineered specifically for low-power, high-precision sensor interface applications in harsh industrial environments - emphasizing offset stability, rail-to-rail operation, and ESD-hardened construction.
FAQ
What is the maximum operating temperature for the TLC27L9CDR?
The TLC27L9CDR is characterized for operation from 0°C to 70°C. Its electrical specifications - including input offset voltage (1000 µV max), supply current (68 µA max), and common-mode range - are guaranteed only within this ambient temperature range. Operation outside this window may degrade performance or violate absolute maximum ratings.
Does the TLC27L9CDR support true rail-to-rail input?
No, the TLC27L9CDR 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 (e.g., 3.5 V at VDD = 5 V). However, it does provide rail-to-rail output swing - driving as low as 1 mV above GND and as high as VDD – 0.9 V under 1 MΩ load - which is confirmed in Section 5.4 of the TLC27L9CDR datasheet.
Can the TLC27L9CDR be used with a 3.3 V supply?
Yes, the TLC27L9CDR operates reliably at 3.3 V. Its minimum specified supply voltage is 3 V across the 0°C to 70°C range. At 3.3 V, it maintains 1000 µV max input offset, 0.6 pA typical input bias current, and rail-to-rail output swing - making it suitable for modern low-voltage sensor nodes without level-shifting circuitry.
Is the TLC27L9CDR pin-compatible with other TLC27Lx variants?
Yes, all TLC27Lx quad op amps - including TLC27L4CDR, TLC27L4ACDR, TLC27L4BCDR, and TLC27L9CDR - share identical SOIC-14 (D) pinouts and footprints. This allows drop-in replacement within the same temperature grade (C-suffix) when upgrading offset precision, provided PCB layout accommodates the same 8.65 mm × 3.91 mm package.
What is the typical input noise voltage of the TLC27L9CDR?
The TLC27L9CDR exhibits a typical equivalent input noise voltage of 70 nV/√Hz at 1 kHz, as measured with RS = 20 Ω and specified in Sections 5.5 and 5.9 of its datasheet. This value remains stable across temperature and supply voltage variations, supporting low-noise amplification of microvolt-level sensor signals.
TLC27L9CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.03V/µs
- Gain Bandwidth Product:
- 110 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.7 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 57µA (x4 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:
- 14-SOIC
TLC27L9CDR FAQ
1.How can I place an order for TLC27L9CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L9CDR 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 TLC27L9CDR reliable?
The price and inventory of TLC27L9CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L9CDR is usually 5 days.
3.What payment methods are accepted for TLC27L9CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L9CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L9CDR?
TLC27L9CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L9CDR 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 TLC27L9CDR?
For technical support, including TLC27L9CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L9CDR requirements.
6.How does Aetrix verify that TLC27L9CDR is sourced from the original manufacturer or authorized distributors?
All TLC27L9CDR 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 TLC27L9CDR meets industry standards.
7.What is the process for return or replacement of TLC27L9CDR?
All TLC27L9CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L9CDR, 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 TLC27L9CDR part is unused and in its original packaging.
Return procedure for TLC27L9CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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