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Texas Instruments TLC27L1BIP
- Part No.:
- TLC27L1BIP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC27L1BIP.pdf
- Description:
- IC CMOS 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:5,278
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Product details
Overview
TLC27L1BIP from Texas Instruments is a low-power, single-supply operational amplifier using LinCMOS technology, featuring 10 mV max input offset voltage at 25°C, 68 nV/√Hz input noise at 1 kHz, and rail-to-rail output swing down to the negative rail. It operates from 4 V to 16 V over −40°C to +85°C and is used in battery-powered field transmitters for pressure, flow, temperature, and level sensing.
For engineers reviewing the TLC27L1BIP datasheet, TLC27L1BIP pinout, TLC27L1BIP application, or TLC27L1BIP equivalent, key selection criteria include input offset voltage stability (0.1 μV/month drift), ultra-low supply current (10–23 µA), common-mode input range extending below ground, and compatibility with single-supply sensor signal conditioning in harsh industrial environments.
Technical Context
The TLC27L1BIP implements a silicon-gate LinCMOS input stage delivering 10¹² Ω typical input impedance and sub-picoampere bias currents, enabling high-impedance sensor interfacing without significant loading. Its architecture supports stable operation with capacitive loads up to 20 pF and maintains ≥30° phase margin across temperature and supply voltage variations.
It integrates ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2) and features two dedicated offset-null pins (OFFSET N1 and OFFSET N2) on legacy silicon-though these are NC on newer revisions-allowing fine-tuning of input offset in precision analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 10 mV at 25°C; ensures ≤±5 mV error in 10-bit ADC interfaces with 5 V full-scale range |
| Supply Current (typ) | 17 µA at 5 V, 25°C; enables >10-year battery life in remote 3.6 V lithium-thionyl chloride sensor nodes |
| Input Noise Density | 68 nV/√Hz at 1 kHz; supports <1 µV RMS noise in 10 Hz–1 kHz bandwidth sensor amplification |
| Common-Mode Range | Extends to −0.2 V below GND at 5 V supply; allows direct interfacing with grounded thermocouples or current-sense shunts |
| Output Swing | Includes negative rail (VOL ≤ 50 mV at IOL = 0 mA); eliminates need for negative supply in single-rail systems |
| Unity-Gain Bandwidth | 85 kHz at 5 V; sufficient for DC–10 kHz signal conditioning in industrial transmitter loop-powered designs |
| ESD Rating | 2000 V HBM; meets basic handling robustness requirements for factory assembly and field service |
Pinout & Package
Package: PDIP-8 (Plastic Dual In-line Package, 0.300-inch width).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OFFSET N1) | Offset adjustment input (legacy silicon) / NC (new silicon) | Legacy bias-select pin; not connected internally on modern wafers-leave unconnected or tie to GND per TI guidance |
| 2 (IN−) | Inverting input | Differential input node; high-impedance LinCMOS gate; accepts signals down to −0.2 V below GND |
| 3 (IN+) | Noninverting input | Differential input node; identical impedance and voltage range as IN−; used for reference or sensor input |
| 4 (GND) | Ground reference | Negative power rail and signal return; must be low-impedance for noise immunity in sensor front-ends |
| 5 (OFFSET N2) | Offset adjustment input (legacy silicon) / NC (new silicon) | Legacy bias-select pin; functionally identical to Pin 1; treat as NC unless using pre-2000 silicon |
| 6 (OUT) | Amplifier output | Push-pull CMOS output capable of sourcing/sinking ±30 mA; swings within 50 mV of GND and 1 V of VDD |
| 7, 8 (VDD) | Positive supply | Single positive rail connection; both pins bonded internally-connect to same clean, decoupled 4–16 V source |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS input stage | 10¹² Ω input impedance and <60 pA input bias current enable direct connection to high-Z sensors (e.g., pH electrodes, piezoresistive bridges) |
| Rail-to-rail output | Output drives to within 50 mV of GND and 1 V of VDD at 5 V supply-eliminates need for dual supplies in portable instrumentation |
| Low-voltage single-supply operation | Functional from 4 V minimum over full −40°C to +85°C range-supports 4xAA or 3.7 V Li-ion with LDO dropout margin |
| Offset voltage stability | 0.1 μV/month drift including first 30 days-reduces calibration frequency in sealed environmental monitoring devices |
| ESD-protected inputs | 2000 V HBM rating allows safe handling during PCB assembly and field replacement without special grounding protocols |
Applications
| Pressure Transmitter | Temperature Transmitter |
|---|---|
Use Scenario: Signal conditioning of millivolt-level output from silicon piezoresistive pressure sensors in HVAC and process control systems. IC Role / Device Role / Timing Role: Low-noise, low-drift amplifier buffering sensor bridge output before 12-bit SAR ADC digitization. Use Value: 68 nV/√Hz noise and 10 mV VIO ensure <0.1% FS measurement accuracy over 10-year field deployment without recalibration. | Use Scenario: Amplification of RTD or thermistor voltage in industrial temperature loops with 4–20 mA output stages. IC Role / Device Role / Timing Role: Precision gain stage converting ratiometric sensor voltage to ADC input, operating from loop-powered 24 V supply. Use Value: Single-supply operation from 4–16 V and rail-to-rail output allow direct interface with 3.3 V microcontrollers without level-shifting. |
| Flow Transmitter | Smoke Detector Analog Front-End |
Use Scenario: Conditioning differential pressure signals from orifice plates or vortex shedding sensors in water/gas metering. IC Role / Device Role / Timing Role: High-input-impedance amplifier driving low-pass filter and ADC input in battery-operated ultrasonic flow meters. Use Value: 17 µA supply current extends 2× AA battery life beyond 5 years while maintaining 0.05% linearity over temperature. | Use Scenario: Amplifying weak ionization chamber current (pA–nA range) in photoelectric smoke detectors. IC Role / Device Role / Timing Role: Transimpedance amplifier with feedback resistor, leveraging ultra-low input bias current (<60 pA) to minimize dark-current error. Use Value: Sub-picoampere IIB prevents false alarms caused by leakage-induced offset drift in humid, dusty environments. |
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 |
|---|---|---|---|
| TLC27L2BIP | Dual-channel version in same PDIP-8 package; shares identical electrical specs per channel but doubles channel count | Reduces board space in multi-sensor systems (e.g., 2-wire temperature + humidity transmitters) but increases quiescent current proportionally | Select when simultaneous amplification of two independent sensor signals is required without increasing footprint |
| LPV521MG/NOPB | Lower VIO (1.25 mV max), lower IQ (320 nA), but narrower supply range (1.8–5.5 V) and no extended temp grade | Suitable only for 3.3 V battery-powered IoT endpoints-not for 12–24 V industrial loops or −40°C environments | Choose for ultra-low-power wearable or wireless sensor nodes where supply voltage is fixed at 3.3 V and temperature range is limited |
Compared with TLC27L2BIP and LPV521MG/NOPB, the TLC27L1BIP uniquely balances wide supply range (4–16 V), extended temperature capability (−40°C to +85°C), and proven field reliability in loop-powered industrial transmitters-making it the preferred choice where robustness and compatibility with legacy 24 V infrastructure are critical.
Availability
TLC27L1BIP is available at Aetrix Electronics and suitable for pressure transmitter design, temperature transmitter calibration, and smoke detector analog front-end development requiring stable component supply across long production lifecycles.
Supply support for TLC27L1BIP 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 over 90 years of innovation in precision analog ICs.
The TLC27L1x family was designed specifically for low-power, single-supply industrial sensor signal conditioning-emphasizing offset stability, rail-to-rail output, and robustness in harsh environments.
FAQ
What is the maximum operating temperature range for the TLC27L1BIP?
The TLC27L1BIP is characterized for operation from −40°C to +85°C (I-suffix grade). This extended temperature range makes it suitable for deployment in outdoor industrial enclosures, oil-and-gas field instruments, and automotive under-hood sensor modules where ambient extremes are expected. The device maintains specified performance-including input offset voltage, supply current, and common-mode range-across this full range.
Does the TLC27L1BIP support true rail-to-rail input operation?
The TLC27L1BIP 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 V at 5 V supply. However, it does provide rail-to-rail output swing-down to within 50 mV of GND and up to within 1 V of VDD. This asymmetry is intentional for single-supply sensor interfaces where the negative rail is GND and the signal of interest lies near that reference.
Can the OFFSET N1 and OFFSET N2 pins on the TLC27L1BIP be used for nulling in new designs?
No-on modern silicon revisions of the TLC27L1BIP, OFFSET N1 (Pin 1) and OFFSET N2 (Pin 5) are internally unconnected (NC). These pins were functional only on legacy silicon for bias-select offset trimming. TI documentation explicitly states they should be left unconnected or tied to GND in new designs. Using them for external nulling will have no effect on input offset voltage.
What is the typical supply current of the TLC27L1BIP at 10 V supply and 25°C?
The typical supply current of the TLC27L1BIP is 23 µA at VDD = 10 V and TA = 25°C, as specified in Section 5.4 of the datasheet. At lower temperatures (0°C), it rises to 27 µA, and at maximum operating temperature (+85°C), it drops to 18 µA. This inverse temperature coefficient is characteristic of LinCMOS process technology and supports stable power budgeting across thermal conditions.
Is the TLC27L1BIP compatible with capacitive loads, and what is the recommended maximum?
Yes-the TLC27L1BIP is stable with capacitive loads up to 20 pF, as verified in unity-gain configuration per Figure 6-1 test circuit. Phase margin remains ≥30° under these conditions. For loads exceeding 20 pF (e.g., long PCB traces or cable-driven outputs), an isolation resistor (10–100 Ω) between OUT and the load is recommended to maintain stability without degrading bandwidth significantly.
TLC27L1BIP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.03V/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):
- 4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLC27L1BIP FAQ
1.How can I place an order for TLC27L1BIP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L1BIP 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 TLC27L1BIP reliable?
The price and inventory of TLC27L1BIP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L1BIP is usually 5 days.
3.What payment methods are accepted for TLC27L1BIP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L1BIP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L1BIP?
TLC27L1BIP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L1BIP 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 TLC27L1BIP?
For technical support, including TLC27L1BIP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L1BIP requirements.
6.How does Aetrix verify that TLC27L1BIP is sourced from the original manufacturer or authorized distributors?
All TLC27L1BIP 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 TLC27L1BIP meets industry standards.
7.What is the process for return or replacement of TLC27L1BIP?
All TLC27L1BIP units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L1BIP, 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 TLC27L1BIP part is unused and in its original packaging.
Return procedure for TLC27L1BIP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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