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Texas Instruments TLC27L7CDR
- Part No.:
- TLC27L7CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC27L7CDR.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,671
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Product details
Overview
TLC27L7CDR from Texas Instruments is a precision dual CMOS operational amplifier optimized for ultra-low-power, single-supply sensor signal conditioning. It delivers 1 mV max input offset voltage (25°C), 10¹² Ω input impedance, and 95 μW typical quiescent power at 5 V - enabling high-accuracy analog front-ends in battery-powered field transmitters and smoke detectors.
For engineers reviewing the TLC27L7CDR datasheet, TLC27L7CDR pinout, TLC27L7CDR application, or TLC27L7CDR equivalent, key selection criteria include its rail-to-rail output swing, negative-rail-input capability, −40°C to +85°C industrial temperature range, and SOIC-8 packaging for space-constrained PCB layouts.
Technical Context
The TLC27L7CDR uses Texas Instruments' LinCMOS™ silicon-gate process to achieve exceptional input offset voltage stability (0.1 μV/month drift) and low bias currents (<60 pA typ). Its dual-channel architecture supports independent signal paths with matched performance across channels.
Designed for single-supply operation down to 4 V, it features a common-mode input voltage range extending 0.2 V below ground and output swing within 50 mV of the negative rail - critical for interfacing with low-voltage sensors and ADCs without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIO max | 1000 µV at 25°C - enables <1 LSB error in 10-bit systems with ±1 V input range |
| Supply voltage | 4 V to 16 V - supports direct connection to 5 V or 12 V industrial rails without regulation |
| IIB typ | 0.6 pA at 25°C - minimizes voltage drop across high-impedance sensor sources (e.g., pH electrodes) |
| IDD typ | 20 µA per amplifier at 5 V - allows >10-year battery life in 10 µA sleep-cycle sensor nodes |
| CMVR | −0.2 V to 3.5 V at 5 V supply - accepts signals referenced below ground (e.g., thermocouple cold-junction compensation) |
| Unity-gain BW | 85 kHz at 5 V - sufficient for DC–10 kHz sensor bandwidth with ≥6 dB gain margin |
| SR | 0.03 V/µs at 5 V - limits full-scale step response to >33 µs, suitable for slow-varying process signals |
Pinout & Package
Package: SOIC-8 (D package), 3.9 mm × 4.9 mm body, 1.27 mm pitch, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN+ | Noninverting input, channel 1 | High-impedance node for differential sensing; accepts signals down to −0.2 V |
| 1IN− | Inverting input, channel 1 | Feedback path connection point; matched to 1IN+ for precision gain setting |
| 1OUT | Output, channel 1 | Rail-to-rail capable: drives loads to within 50 mV of GND and VOH = 3.2 V min at 5 V |
| GND | Ground reference | Common return for both amplifiers and supply; serves as negative rail in single-supply mode |
| 2IN+ | Noninverting input, channel 2 | Independent second channel for dual-sensor buffering or signal conditioning |
| 2IN− | Inverting input, channel 2 | Supports independent feedback network; electrically isolated from channel 1 |
| VDD | Positive supply | Accepts 4–16 V; powers both amplifiers; internal ESD protection rated to 2000 V |
| NC | No connect | Pin 8 is unused - no internal connection; must remain unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Input offset voltage drift | 0.1 µV/month - ensures calibration stability over multi-year field deployments without recalibration |
| ESD protection | 2000 V HBM - eliminates need for external TVS diodes in low-energy industrial environments |
| Latch-up immunity | Designed-in - prevents destructive failure during power sequencing or transient overvoltage events |
| Single-supply operation | 4 V minimum - enables direct interface with 3.3 V logic via level-shifted references or resistor dividers |
| Ultra-low power | 95 µW total at 5 V - reduces thermal noise contribution and PCB self-heating in sealed enclosures |
Applications
| Smoke and Heat Detector | Pressure Transmitter |
|---|---|
Use Scenario: Analog signal conditioning of ionization chamber or thermistor outputs in residential/commercial fire alarm systems. IC Role / Device Role / Timing Role: Dual-channel precision amplifier: one channel buffers sensor output, the other configures comparator reference or drives ADC input. Use Value: 1 mV VIO and 0.1 µV/month drift ensure consistent alarm thresholds over 10+ years without field recalibration. | Use Scenario: Signal amplification and offset adjustment for piezoresistive pressure sensor bridges in HVAC or process control. IC Role / Device Role / Timing Role: Instrumentation-grade dual op amp providing gain, common-mode rejection, and rail-to-rail output for 4–20 mA loop drivers. Use Value: −0.2 V CMVR and 10¹² Ω input impedance prevent loading of high-Z bridge sensors and enable true zero-pressure offset trimming. |
| Temperature Transmitter | Motion Detector |
Use Scenario: Linearization and amplification of RTD or thermocouple signals in industrial temperature monitoring nodes. IC Role / Device Role / Timing Role: Precision dual amplifier: first stage conditions thermocouple output with cold-junction compensation; second stage filters and scales for ADC input. Use Value: Input range extending below GND allows direct connection to thermocouple junctions without external biasing networks. | Use Scenario: Low-power signal amplification of PIR sensor outputs in battery-operated security lighting or occupancy sensors. IC Role / Device Role / Timing Role: Dual op amp configured as AC-coupled amplifier and window comparator driver for motion event detection. Use Value: 20 µA per amplifier IDD enables >5-year operation on two AA batteries while maintaining sub-mV offset stability. |
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 |
|---|---|---|---|
| TLV2772IDR | Higher supply current (170 µA vs 20 µA), 3.6 MHz GBW, rail-to-rail I/O, 2.7–6 V supply | Better for higher-speed, higher-precision active filters; unsuitable for ultra-low-power battery nodes | Select when bandwidth >100 kHz or rail-to-rail input is required; avoid where <50 µA total system current is mandatory |
| OPA2333AIDR | Zero-drift architecture, 12 µV VIO max, 17 µA IDD, 360 kHz GBW, 1.8–5.5 V supply | Superior DC accuracy and drift performance; limited to ≤5.5 V supply and narrower temp range (−40°C to +125°C) | Select for highest DC precision in medical or test equipment; not recommended for 12 V industrial rails or extended-life battery use |
Compared with TLV2772IDR and OPA2333AIDR, the TLC27L7CDR provides the lowest power consumption and widest supply range among precision dual op amps, making it uniquely suited for long-life, wide-voltage industrial sensor interfaces - though it trades off bandwidth and zero-drift correction.
Availability
TLC27L7CDR is available at Aetrix Electronics and suitable for field transmitter design, smoke detector manufacturing, and industrial temperature monitoring requiring stable component supply across extended product lifecycles.
Supply support for TLC27L7CDR 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLC27Lx family was designed specifically for ultra-low-power, high-impedance sensor signal conditioning in harsh industrial environments - emphasizing long-term offset stability, single-supply operation, and latch-up immunity.
FAQ
What is the maximum operating temperature range for the TLC27L7CDR?
The TLC27L7CDR is characterized for operation from −40°C to +85°C, matching the I-suffix industrial temperature grade. This range supports deployment in outdoor enclosures, factory floors, and HVAC ducts without derating. The device maintains specified VIO, CMVR, and IDD performance across this full span, as verified in TI's SLOS052E datasheet Section 5.8–5.11.
Does the TLC27L7CDR support true single-supply operation with inputs below ground?
Yes, the TLC27L7CDR supports common-mode input voltages down to −0.2 V relative to GND at 5 V supply, enabling direct interface with transducers whose outputs swing slightly below ground (e.g., thermocouples, certain bridge configurations). This eliminates the need for external level-shifting circuitry and preserves DC accuracy in the TLC27L7CDR's signal path.
What is the typical supply current of the TLC27L7CDR at 5 V?
The TLC27L7CDR draws 20 µA typical supply current per amplifier at 5 V and 25°C, totaling 40 µA for both channels. This ultra-low IDD enables multi-year battery life in wireless sensor nodes. Measured values remain within 26 µA/channel at 85°C and 31 µA/channel at −40°C, as documented in Section 5.8 of the SLOS052E datasheet.
Is the TLC27L7CDR pin-compatible with other devices in the TLC27Lx family?
Yes, the TLC27L7CDR shares identical SOIC-8 (D package) pinout and footprint with all TLC27Lx dual op amps, including TLC27L2CDR, TLC27L2ACDR, and TLC27L2BCDR. This allows direct substitution in existing designs when upgrading offset voltage grade - provided the application's VIO, drift, and temperature requirements align with the selected variant.
What packaging and tape-and-reel options are available for the TLC27L7CDR?
The TLC27L7CDR is supplied in an 8-pin SOIC (D package) with standard JEDEC MS-012AC dimensions (3.9 mm × 4.9 mm), available in tape-and-reel format per TI's orderable information. It is not offered in PDIP, SOP, or TSSOP variants - only the D package is designated for the C-suffix commercial grade, as confirmed in the Device Information table of SLOS052E.
TLC27L7CDR 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
TLC27L7CDR FAQ
1.How can I place an order for TLC27L7CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L7CDR 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 TLC27L7CDR reliable?
The price and inventory of TLC27L7CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L7CDR is usually 5 days.
3.What payment methods are accepted for TLC27L7CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L7CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L7CDR?
TLC27L7CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L7CDR 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 TLC27L7CDR?
For technical support, including TLC27L7CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L7CDR requirements.
6.How does Aetrix verify that TLC27L7CDR is sourced from the original manufacturer or authorized distributors?
All TLC27L7CDR 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 TLC27L7CDR meets industry standards.
7.What is the process for return or replacement of TLC27L7CDR?
All TLC27L7CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L7CDR, 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 TLC27L7CDR part is unused and in its original packaging.
Return procedure for TLC27L7CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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