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Texas Instruments TLC27L2CDR
- Part No.:
- TLC27L2CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC27L2CDR.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,165
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Product details
Overview
TLC27L2CDR from Texas Instruments is a precision dual CMOS operational amplifier optimized for low-power, single-supply sensor signal conditioning. It delivers 10 mV max input offset voltage (25°C), ultra-low 34 µA typical supply current (VDD = 5 V), 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 TLC27L2CDR datasheet, TLC27L2CDR pinout, TLC27L2CDR application, or TLC27L2CDR equivalent, key selection criteria include its LinCMOS™ input stage (10¹² Ω impedance, <60 pA bias current), −0.2 V to 3.5 V common-mode input range at 5 V supply, and guaranteed operation from 0°C to 70°C in SOIC-8 packaging.
Technical Context
The TLC27L2CDR uses Texas Instruments' silicon-gate LinCMOS™ process to achieve stable input offset voltage (drift ≤0.1 µV/month) and high DC precision without bipolar power penalties. Its dual-amplifier architecture supports independent channel operation with matched gain and phase characteristics across temperature.
Designed for single-supply operation, it features a common-mode input voltage range extending 0.2 V below GND and output swing within 50 mV of GND - critical for interfacing with low-voltage sensors and ADCs in industrial transmitter designs.
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 |
| Supply Current (typ) | 34 µA at VDD = 5 V - enables multi-year battery life in remote sensors |
| Input Bias Current (max) | 60 pA at 25°C - preserves signal integrity with high-impedance sources (e.g., pH electrodes) |
| Common-Mode Input Range | −0.2 V to 3.5 V at VDD = 5 V - supports ground-referenced sensor inputs |
| Output Voltage Swing | Within 50 mV of GND and 0.9 V below VDD - ensures full dynamic range into 12-bit ADCs |
| Unity-Gain Bandwidth | 85 kHz at VDD = 5 V - sufficient for DC–10 kHz sensor signal conditioning |
| CMRR (min) | 60 dB over 0°C–70°C - rejects noise in noisy industrial environments |
Pinout & Package
Package: SOIC-8 (D package), surface-mount, 3.9 mm × 4.9 mm body, 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN+ | Noninverting input, Channel 1 | High-impedance node (10¹² Ω) for differential sensing or reference buffering |
| 1IN− | Inverting input, Channel 1 | Feedback path connection point; matched to 1IN+ for precision closed-loop gain |
| 1OUT | Output, Channel 1 | Capable of sourcing/sinking ±30 mA; swings to within 50 mV of GND |
| GND | Ground / Negative supply | Reference for both inputs and outputs; common return for dual-channel layout |
| 2IN+ | Noninverting input, Channel 2 | Independent high-Z input for second sensor channel or signal processing stage |
| 2IN− | Inverting input, Channel 2 | Separate feedback node - allows dual independent amplifiers on one die |
| 2OUT | Output, Channel 2 | Electrically isolated output; no crosstalk specified between channels |
| VDD | Positive supply | Accepts 3 V–16 V; powers both amplifiers; internal ESD protection to 2000 V |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ input stage | 10¹² Ω input impedance and sub-60 pA bias current enable direct connection to high-Z sensors without loading |
| Single-supply rail-to-rail output | Output drives within 50 mV of GND and 0.9 V below VDD - maximizes usable ADC input range |
| Input offset voltage drift | ≤0.1 µV/month including first 30 days - ensures long-term calibration stability in field-deployed equipment |
| ESD protection | 2000 V HBM rating per MIL-STD-883C Method 3015.2 - reduces handling sensitivity during PCB assembly |
| Latch-up immunity | Designed-in immunity prevents destructive latch-up under overvoltage or ESD stress conditions |
Applications
| Flow Transmitter | Pressure Transmitter |
|---|---|
Use Scenario: Amplifies low-level analog output (e.g., 4–20 mA loop sensor) from turbine or Coriolis flow meters in HVAC or process control systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with gain and offset trimming capability. Use Value: 10 mV max VIO and 60 dB min CMRR suppress common-mode noise from motor drives and variable-frequency drives in plant environments. | Use Scenario: Conditions piezoresistive bridge signals in industrial pressure sensors deployed in oil & gas wellheads or chemical reactors. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one amp for bridge excitation regulation, the other for differential bridge output amplification. Use Value: Ultra-low 34 µA supply current extends battery life in wireless pressure monitoring nodes; −0.2 V input range accommodates bridge common-mode shift. |
| Temperature Transmitter | Smoke Detector |
Use Scenario: Interfaces with RTD or thermistor elements in DIN-rail mounted temperature transmitters for PLC analog input modules. IC Role / Device Role / Timing Role: Precision voltage follower and gain stage for linearizing and scaling sensor voltage to 0–5 V or 0–10 V output ranges. Use Value: 0.1 µV/month VIO drift ensures calibration remains valid over 5+ years of continuous operation without field recalibration. | Use Scenario: Amplifies weak ionization chamber current (pA–nA range) in photoelectric or dual-sensor smoke alarms. IC Role / Device Role / Timing Role: Low-noise, high-input-impedance preamplifier stage preceding comparator and alarm logic. Use Value: 60 pA max input bias current prevents signal loss across high-value feedback resistors; 68 nV/√Hz input noise preserves signal-to-noise ratio at critical detection thresholds. |
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 |
|---|---|---|---|
| TLC27L2IDR | Wider operating temperature range (−40°C to +85°C); otherwise identical electrical specs and pinout | Suitable for automotive cabin sensors or outdoor industrial enclosures where ambient exceeds 70°C | Select TLC27L2IDR when extended temperature operation is required; same PCB layout and firmware |
| LMV358IDR | Higher supply current (150 µA typ), lower input impedance (10⁶ Ω), no guaranteed VIO spec below 25°C | Better suited for cost-sensitive consumer applications where ultra-low power and precision are secondary | Choose LMV358IDR only if power budget >100 µA and offset drift tolerance >5 µV/°C is acceptable |
Compared with TLC27L2IDR, the TLC27L2CDR offers tighter temperature qualification (0°C–70°C) and lower cost, while LMV358IDR trades precision and power efficiency for broader general-purpose use - making TLC27L2CDR optimal for calibrated, battery-constrained industrial transmitters.
Availability
TLC27L2CDR is available at Aetrix Electronics and suitable for flow transmitter design, pressure sensor interface, temperature transmitter calibration, and smoke detector signal conditioning requiring stable component supply across production lifecycles.
Supply support for TLC27L2CDR 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 engineered specifically for low-power, high-precision analog signal conditioning in battery-operated and industrial field instruments - emphasizing DC accuracy, input stage robustness, and long-term parametric stability.
FAQ
What is the maximum supply voltage for the TLC27L2CDR?
The TLC27L2CDR supports a maximum supply voltage of 16 V across its rated operating temperature range (0°C to 70°C). Absolute maximum rating is 18 V, but operation above 16 V is not guaranteed and may impact reliability or parametric performance. Always observe recommended operating conditions in Section 5.3 of the official datasheet.
Does the TLC27L2CDR support true rail-to-rail input?
The TLC27L2CDR does not support rail-to-rail input: its common-mode input voltage range extends to −0.2 V (below GND) and up to 3.5 V at VDD = 5 V, but does not reach VDD. However, it does provide rail-to-rail output swing - down to within 50 mV of GND and up to within 0.9 V of VDD - making it ideal for single-supply systems with ground-referenced inputs.
Is the TLC27L2CDR pin-compatible with other TLC27Lx variants?
Yes, the TLC27L2CDR is pin-compatible with all TLC27Lx dual op-amps in SOIC-8 (D) package, including TLC27L2IDR, TLC27L2MDR, and TLC27L7CDR. Pin functions, footprint, and thermal pad configuration are identical - enabling drop-in replacement when temperature grade or offset voltage grade must be upgraded without PCB revision.
What is the input bias current specification for the TLC27L2CDR at 70°C?
At 70°C, the TLC27L2CDR has a maximum input bias current of 600 pA, as specified in Section 5.4 of the datasheet. This value reflects worst-case behavior across the C-suffix temperature range and remains well below 1 nA - preserving accuracy in high-impedance sensor interfaces such as thermocouple cold-junction compensation or photodiode transimpedance stages.
Can the TLC27L2CDR drive capacitive loads reliably?
The TLC27L2CDR exhibits stable operation with capacitive loads up to 20 pF, as validated in Figure 5-29 (phase margin vs. capacitive load) and Section 5.5 test conditions. For loads exceeding 20 pF, external isolation resistance (e.g., 100 Ω in series with output) is recommended to maintain ≥30° phase margin and prevent peaking or oscillation in closed-loop configurations.
TLC27L2CDR 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:
- 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):
- 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
TLC27L2CDR FAQ
1.How can I place an order for TLC27L2CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L2CDR 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 TLC27L2CDR reliable?
The price and inventory of TLC27L2CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L2CDR is usually 5 days.
3.What payment methods are accepted for TLC27L2CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L2CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L2CDR?
TLC27L2CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L2CDR 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 TLC27L2CDR?
For technical support, including TLC27L2CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L2CDR requirements.
6.How does Aetrix verify that TLC27L2CDR is sourced from the original manufacturer or authorized distributors?
All TLC27L2CDR 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 TLC27L2CDR meets industry standards.
7.What is the process for return or replacement of TLC27L2CDR?
All TLC27L2CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L2CDR, 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 TLC27L2CDR part is unused and in its original packaging.
Return procedure for TLC27L2CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC27L2CDR Tags
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