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Texas Instruments TLC27L7CPSR
- Part No.:
- TLC27L7CPSR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TLC27L7CPSR.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,999
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Product details
Overview
TLC27L7CPSR from Texas Instruments is a precision dual CMOS operational amplifier optimized for low-power, single-supply sensor signal conditioning. It delivers 1 mV max input offset voltage (25°C), ultra-low 34 µA typical supply current at 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 TLC27L7CPSR datasheet, TLC27L7CPSR pinout, TLC27L7CPSR application, or TLC27L7CPSR equivalent, key selection criteria include its 1 mV precision grade, −0.2 V to 3.5 V common-mode input range at 5 V supply, LinCMOS™ input impedance >10¹² Ω, and guaranteed operation from 0°C to 70°C in SOIC-8 packaging.
Technical Context
The TLC27L7CPSR 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-channel architecture supports independent signal paths with matched gain and offset characteristics across temperature.
Designed for single-supply operation, it features a common-mode input range extending 0.2 V below ground and rail-swing output capability - critical for interfacing with low-voltage sensors and ADCs in industrial transmitter designs where headroom is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 1000 µV at 25°C - enables high-accuracy DC-coupled amplification of microvolt-level sensor outputs |
| Supply Current (typ) | 34 µA at 5 V - supports multi-year battery life in remote wireless sensor nodes |
| Common-Mode Input Range | −0.2 V to 3.5 V at 5 V supply - accepts signals below ground, ideal for transducer biasing |
| Input Impedance | 10¹² Ω typical - prevents loading of high-impedance pH, thermocouple, or piezoelectric sensors |
| Unity-Gain Bandwidth | 85 kHz at 5 V - sufficient for slow-varying process variables (pressure, temperature, flow) |
| Output Voltage Swing | Within 50 mV of negative rail - maximizes dynamic range in single-supply systems |
| ESD Rating | 2000 V per MIL-STD-883C Method 3015.2 - enhances robustness during PCB handling and field deployment |
Pinout & Package
Package: SOIC-8 (Small Outline Integrated Circuit, 8-pin, 150-mil width). Pin spacing: 1.27 mm, body width: 3.9 mm, total length: 4.9 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN+ | Noninverting input, channel 1 | High-impedance node for reference or sensor signal connection; accepts voltages down to −0.2 V |
| 1IN− | Inverting input, channel 1 | Feedback path entry point; matched to 1IN+ for precision closed-loop gain control |
| 1OUT | Output, channel 1 | Rail-to-rail capable output driving loads up to ±30 mA; swings within 50 mV of GND |
| GND | Ground / negative supply | Reference node for both channels; common return for supply and signal paths |
| 2IN+ | Noninverting input, channel 2 | Independent high-Z input for second sensor or signal path; identical specs to 1IN+ |
| 2IN− | Inverting input, channel 2 | Separate feedback node enabling dual independent amplifiers on one die |
| VDD | Positive supply | Accepts 3–16 V; powers both op-amps; internal regulation ensures stable bias under load |
| 2OUT | Output, channel 2 | Second rail-swing output; electrically isolated from 1OUT but shares supply and ground |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input offset drift | ≤0.1 µV/month - maintains calibration stability over years in unattended field installations |
| Single-supply rail-to-rail output | Swings to within 50 mV of GND - eliminates need for negative supply in portable sensor front-ends |
| LinCMOS™ input stage | 10¹² Ω input impedance + pA-level bias current - preserves signal integrity from high-Z sources |
| Latch-up immunity | Designed-in protection per JEDEC JESD78 - prevents catastrophic failure during overvoltage transients |
| Extended common-mode range | Inputs operate 0.2 V below GND - enables direct interface with grounded thermistors or bridge sensors |
Applications
| Smoke Detector Signal Conditioning | Pressure Transmitter Amplifier |
|---|---|
|
Use Scenario: Amplifying weak ionization chamber current converted to voltage via feedback resistor in battery-powered residential smoke alarms. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with ultra-low input bias current to avoid signal loss across megaohm feedback networks. Use Value: 34 µA supply current extends 10-year battery life; 1 mV offset ensures reliable alarm threshold detection without false triggers. |
Use Scenario: Conditioning millivolt-level output from silicon piezoresistive pressure sensors in HVAC and industrial process controllers. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end providing gain and offset trimming for ratiometric sensor outputs. Use Value: Matched channel performance and 0.1 µV/month drift maintain long-term accuracy; SOIC-8 footprint simplifies layout in space-constrained modules. |
| Temperature Transmitter Interface | Flow Transmitter Signal Chain |
|
Use Scenario: Linearizing and scaling RTD or thermistor voltage outputs for 4–20 mA loop transmission in factory automation systems. IC Role / Device Role / Timing Role: Low-power, precision op-amp implementing constant-current excitation and differential amplification in analog front-end. Use Value: −0.2 V to 3.5 V common-mode range accommodates sensor biasing schemes; ESD-hardened inputs survive harsh plant-floor handling. |
Use Scenario: Amplifying low-amplitude AC signals from turbine or ultrasonic flow sensors in water metering and chemical dosing equipment. IC Role / Device Role / Timing Role: Dual op-amp configured as active filter and level-shifter prior to ADC sampling in battery-operated smart meters. Use Value: 85 kHz unity-gain bandwidth supports kHz-range flow harmonics; 10¹² Ω input impedance prevents signal attenuation in high-Q filter stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2772IDR | Higher 1.8–5.5 V supply range; 2.5 MHz GBW; 1.25 mV offset (max); 170 µA supply current | Better bandwidth for faster sensor signals; higher power consumption limits battery life | Select TLV2772IDR when >100 kHz signal bandwidth is required and supply voltage is ≤5.5 V |
| OPA2333AIDR | Zero-drift architecture; 12 µV max offset; 17 µA supply current; 350 kHz GBW; 1.8–5.5 V supply | Superior DC accuracy and drift performance; lower noise; narrower supply range than TLC27L7CPSR | Select OPA2333AIDR for ultra-stable DC measurements where sub-µV drift is mandatory and supply is regulated at 3.3 V or 5 V |
Compared with TLV2772IDR and OPA2333AIDR, the TLC27L7CPSR offers the widest supply range (3–16 V), lowest quiescent current among precision dual op-amps, and proven reliability in extended-temperature industrial transmitters - making it optimal for cost-sensitive, long-life, wide-input-voltage applications.
Availability
TLC27L7CPSR is available at Aetrix Electronics and suitable for smoke detector manufacturing, industrial pressure transmitter design, and battery-powered field sensor development requiring stable component supply across extended product lifecycles.
Supply support for TLC27L7CPSR 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 consumer markets since 1930.
The TLC27Lx family was engineered for precision, ultra-low-power analog signal conditioning in remote and inaccessible battery-powered applications - emphasizing DC accuracy, rail-swing operation, and long-term parametric stability.
FAQ
What is the maximum input offset voltage specification for TLC27L7CPSR at 25°C?
The TLC27L7CPSR has a maximum input offset voltage of 1000 µV (1 mV) at 25°C, as specified in the Electrical Characteristics table for C-suffix devices operating at VDD = 5 V. This value is guaranteed across the 0°C to 70°C temperature range up to 1500 µV, supporting high-accuracy DC amplification in precision sensor interfaces.
Does TLC27L7CPSR support true single-supply operation with inputs below ground?
Yes, the TLC27L7CPSR supports true single-supply operation with a common-mode input voltage range extending to −0.2 V at 5 V supply - meaning both inputs can be biased 0.2 V below the GND pin. This allows direct interfacing with grounded sensors such as thermistors or Wheatstone bridges without level-shifting circuitry.
What package type and pin count does TLC27L7CPSR use?
The TLC27L7CPSR is supplied in an 8-pin SOIC (Small Outline Integrated Circuit) package, designated PS in TI's ordering nomenclature. It measures 3.9 mm wide and 4.9 mm long with 1.27 mm lead pitch, and is RoHS-compliant and tape-and-reel ready for automated assembly.
How does the supply current of TLC27L7CPSR compare to other precision dual op-amps?
The TLC27L7CPSR draws only 34 µA typical supply current at 5 V - significantly lower than alternatives like TLV2772IDR (170 µA) or OPA2333AIDR (17 µA). Its ultra-low power enables multi-year operation on coin-cell batteries, making it uniquely suited for maintenance-free field transmitters and wireless sensor nodes.
Is TLC27L7CPSR qualified for industrial temperature range operation?
No - the TLC27L7CPSR is a C-suffix device rated for 0°C to 70°C operation only. For extended temperature ranges, TI offers the TLC27L7I (−40°C to +85°C) and TLC27L7M (−55°C to +125°C) variants. The 'C' in TLC27L7CPSR explicitly denotes commercial temperature grade, validated per TI's SLOS052E datasheet.
TLC27L7CPSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-SO
TLC27L7CPSR FAQ
1.How can I place an order for TLC27L7CPSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L7CPSR 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 TLC27L7CPSR reliable?
The price and inventory of TLC27L7CPSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L7CPSR is usually 5 days.
3.What payment methods are accepted for TLC27L7CPSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L7CPSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L7CPSR?
TLC27L7CPSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L7CPSR 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 TLC27L7CPSR?
For technical support, including TLC27L7CPSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L7CPSR requirements.
6.How does Aetrix verify that TLC27L7CPSR is sourced from the original manufacturer or authorized distributors?
All TLC27L7CPSR 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 TLC27L7CPSR meets industry standards.
7.What is the process for return or replacement of TLC27L7CPSR?
All TLC27L7CPSR units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L7CPSR, 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 TLC27L7CPSR part is unused and in its original packaging.
Return procedure for TLC27L7CPSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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