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Texas Instruments TLC27L4ACD
- Part No.:
- TLC27L4ACD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC27L4ACD.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:454
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Product details
Overview
TLC27L4ACD from Texas Instruments is a precision quad operational amplifier using LinCMOS™ technology, designed for low-power, single-supply sensor signal conditioning. It delivers 5 mV max input offset voltage (25°C), ultra-low 195 µW quiescent power at 5 V, and rail-to-rail output swing with common-mode input range extending below ground. It is used in battery-powered field transmitters including pressure, temperature, and flow sensing systems.
For engineers reviewing the TLC27L4ACD datasheet, TLC27L4ACD pinout, TLC27L4ACD application, or TLC27L4ACD equivalent, key selection criteria include input offset voltage stability over time and temperature, single-supply operation down to 3 V, ultra-low bias current (<1 pA), and SOIC-14 package compatibility with space-constrained industrial analog front-ends.
Technical Context
The TLC27L4ACD implements silicon-gate LinCMOS™ architecture to achieve high input impedance (10¹² Ω typical) and exceptional offset-voltage stability-drift as low as 0.1 µV/month-including first 30 days. Its input stage supports common-mode voltage down to −0.2 V (at VDD = 5 V), enabling true single-supply operation without level-shifting circuitry.
It features internal ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2), latch-up immunity, and operates across 0°C to 70°C (C-suffix). Supply current is 40–68 µA (four amplifiers, 25°C, VDD = 5 V), with gain-bandwidth product of 85 kHz and phase margin of 34° at unity gain.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 5 mV at 25°C - enables accurate DC-coupled amplification in low-gain sensor interfaces without trimming |
| Supply Voltage Range | 3 V to 16 V - supports direct operation from single Li-ion, 5 V rails, or 12 V industrial supplies |
| Quiescent Power (typ) | 195 µW at VDD = 5 V - allows multi-year battery life in remote wireless sensor nodes |
| Input Bias Current (typ) | 0.6 pA at 25°C - preserves signal integrity with high-impedance sources like pH electrodes or piezoresistive sensors |
| Common-Mode Input Range | Extends to −0.2 V below GND - eliminates need for negative supply in single-ended sensor configurations |
| Output Swing (low) | 1 mV above GND (VOL, IOL = 0 mA) - ensures full dynamic range utilization near ground reference |
| Unity-Gain Bandwidth | 85 kHz at VDD = 5 V - sufficient for anti-aliasing, filtering, and buffering of slow-varying process signals |
Pinout & Package
Package: SOIC-14 (D package), 8.65 mm × 3.91 mm, surface-mount, tape-and-reel compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN+, 2IN+, 3IN+, 4IN+ | Noninverting input (per channel) | High-impedance node (10¹² Ω) for differential or single-ended signal routing without loading |
| 1IN−, 2IN−, 3IN−, 4IN− | Inverting input (per channel) | Accepts feedback networks; supports precision inverting gain stages with minimal error contribution |
| 1OUT, 2OUT, 3OUT, 4OUT | Amplifier output (per channel) | Rail-to-rail capable (to GND and within ~0.9 V of VDD); drives 1 MΩ loads with <50 mV saturation |
| VDD | Positive supply | Single supply input (3–16 V); powers all four op-amps simultaneously |
| GND | Ground reference | Common return for supply and signal; serves as lowest potential rail for single-supply operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input offset drift | 0.1 µV/month - maintains calibration integrity over months without recalibration in field-deployed instruments |
| Single-supply optimized input stage | Common-mode range includes negative rail - enables direct interfacing to grounded sensors without dual supplies |
| ESD-protected inputs | Rated to 2000 V HBM - reduces handling sensitivity and improves robustness in manufacturing and field service |
| Latch-up immunity | Designed-in structural isolation - prevents destructive failure during overvoltage or ESD events on pins |
| Low-noise performance | 70 nV/√Hz at 1 kHz - suitable for amplifying microvolt-level signals from thermocouples or strain gauges |
Applications
| Pressure Transmitter | Temperature Transmitter |
|---|---|
Use Scenario: Amplifies millivolt output from piezoresistive pressure sensors in HVAC or industrial process control. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with gain and offset adjustment. Use Value: 5 mV VIO max and sub-pA bias current minimize zero-shift errors and preserve sensor bridge linearity. | Use Scenario: Conditions output from RTD or thermistor bridges in distributed temperature monitoring systems. IC Role / Device Role / Timing Role: Low-power, rail-to-rail buffer and filter stage operating from 3.3 V or 5 V supply. Use Value: 195 µW total quiescent power extends battery life in wireless temperature nodes beyond 5 years. |
| Flow Transmitter | Smoke Detector Analog Front-End |
Use Scenario: Processes differential voltage from electromagnetic flow meters in water/wastewater infrastructure. IC Role / Device Role / Timing Role: High-input-impedance differential receiver with common-mode rejection for noisy plant environments. Use Value: 87 dB CMRR and 97 dB kSVR suppress supply ripple and ground noise in unshielded conduit runs. | Use Scenario: Amplifies weak ionization current from smoke chamber in residential and commercial detectors. IC Role / Device Role / Timing Role: Ultra-low-bias-current transimpedance amplifier converting picoamp-level currents to measurable voltage. Use Value: 0.6 pA typical IIB ensures minimal signal loss and stable baseline under varying humidity conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464CD | Higher supply current (550 µA vs 68 µA typ), rail-to-rail I/O, 6.4 MHz GBW | Better for AC-coupled, higher-speed signal chains; unsuitable for µA-level battery operation | Select when bandwidth >100 kHz and rail-to-rail input are required; avoid for low-power DC sensing |
| OPA2333PAIDR | Zero-drift architecture, 10 µV VIO max, 17 µA per amp, 360 kHz GBW | Superior DC accuracy and long-term drift; higher cost and power than TLC27L4ACD | Choose for high-precision metrology where 5 mV VIO is insufficient; not cost-optimized for industrial transmitters |
Compared with TLV2464CD and OPA2333PAIDR, the TLC27L4ACD offers the lowest power consumption and best cost-performance balance for battery-powered, low-bandwidth industrial transmitter applications requiring stable DC gain and single-supply simplicity.
Availability
TLC27L4ACD is available at Aetrix Electronics and suitable for pressure transmitter design, temperature sensor interface, and smoke detector analog front-end development requiring stable component supply and long-lifecycle support.
Supply support for TLC27L4ACD 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 focused on analog and embedded processing technologies, with decades of expertise in precision op-amps and industrial signal-chain solutions.
The TLC27Lx family was engineered for ultra-low-power, high-impedance sensor signal conditioning in battery-operated and space-constrained industrial measurement systems.
FAQ
What is the maximum input offset voltage specification for TLC27L4ACD at 25°C?
The TLC27L4ACD has a maximum input offset voltage of 5 mV at 25°C, as specified in the Electrical Characteristics table for C-suffix devices at VDD = 5 V. This value applies across the full 0°C to 70°C operating range, with a worst-case of 6.5 mV. The TLC27L4ACD is the 'A' grade variant-tighter than the standard TLC27L4C (10 mV max)-making it suitable for applications demanding improved initial DC accuracy without auto-zero or chopper architecture.
Does TLC27L4ACD support true single-supply operation with input signals referenced to ground?
Yes, the TLC27L4ACD supports true single-supply operation: its common-mode input voltage range extends to −0.2 V below GND at VDD = 5 V, and its output swings to within 1 mV of GND. This allows direct connection of grounded-sensor outputs (e.g., bridge sensors) without level-shifting circuitry. The device is explicitly characterized for 0°C to 70°C (C-suffix) and requires no negative supply rail for typical industrial sensor interfacing.
What package type is used for TLC27L4ACD, and is it RoHS-compliant?
The TLC27L4ACD is supplied in a 14-pin SOIC (Small Outline Integrated Circuit) package, designated 'D' by Texas Instruments, with dimensions 8.65 mm × 3.91 mm. Per TI's official packaging documentation and Digi-Key/Mouser listings, this SOIC-14 variant is lead-free and RoHS-compliant, meeting JEDEC standard MS-012. Tape-and-reel packaging is standard for automated assembly.
How does the input bias current of TLC27L4ACD compare to bipolar-input op-amps, and why does it matter?
The TLC27L4ACD exhibits a typical input bias current of 0.6 pA at 25°C-over six orders of magnitude lower than typical bipolar-input op-amps (e.g., LM324: ~45 nA). This ultra-low bias current prevents loading errors when interfacing with high-impedance sources such as pH electrodes, photodiodes, or unbuffered RTD bridges. In practice, it eliminates the need for guard traces or T-network compensation in precision analog front-ends.
Can TLC27L4ACD be used in automotive applications requiring extended temperature range?
No-the TLC27L4ACD is rated only for 0°C to 70°C (C-suffix). For automotive applications requiring −40°C to +125°C operation, TI offers the I-suffix (TLC27L4AI) and M-suffix variants, but the TLC27L4ACD itself is not qualified for extended temperature use. Using it outside its specified range may result in increased VIO drift, reduced CMRR, or parametric failure; always verify ambient and junction temperature limits per the Absolute Maximum Ratings table.
TLC27L4ACD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.05V/µs
- Gain Bandwidth Product:
- 110 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.7 pA
- Voltage - Input Offset:
- 1.1 mV
- 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
TLC27L4ACD FAQ
1.How can I place an order for TLC27L4ACD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27L4ACD 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 TLC27L4ACD reliable?
The price and inventory of TLC27L4ACD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27L4ACD is usually 5 days.
3.What payment methods are accepted for TLC27L4ACD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27L4ACD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27L4ACD?
TLC27L4ACD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27L4ACD 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 TLC27L4ACD?
For technical support, including TLC27L4ACD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27L4ACD requirements.
6.How does Aetrix verify that TLC27L4ACD is sourced from the original manufacturer or authorized distributors?
All TLC27L4ACD 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 TLC27L4ACD meets industry standards.
7.What is the process for return or replacement of TLC27L4ACD?
All TLC27L4ACD units undergo pre-shipment inspection (PSI). If there is an issue with TLC27L4ACD, 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 TLC27L4ACD part is unused and in its original packaging.
Return procedure for TLC27L4ACD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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