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Texas Instruments TLC272AIDR
- Part No.:
- TLC272AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC272AIDR.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,598
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Product details
Overview
TLC272AIDR from Texas Instruments is a precision dual CMOS operational amplifier optimized for single-supply operation, featuring 5 mV max input offset voltage (25°C), 10.8 nV/√Hz input voltage noise at 1 kHz, and rail-to-rail output swing down to the negative rail. It operates from 3 V to 16 V over 0°C to 70°C and delivers 4.5 MHz unity-gain bandwidth - enabling high-fidelity signal conditioning in battery-powered sensor interfaces and portable instrumentation.
For engineers reviewing the TLC272AIDR datasheet, TLC272AIDR pinout, TLC272AIDR application, or TLC272AIDR equivalent, key selection criteria include its low-input-bias-current (≤60 pA typ), wide common-mode input range extending below ground, and SOIC-8 package compatibility with space-constrained analog front-ends requiring stable DC accuracy and low-noise amplification.
Technical Context
The TLC272AIDR uses a polysilicon-gate CMOS process to achieve ultra-high input impedance (>10¹² Ω) and low input bias current (10–60 pA), minimizing loading on high-impedance sources like piezoelectric sensors and pH electrodes. Its input stage supports common-mode voltages as low as –0.1 V (at VDD = 5 V), enabling true single-supply operation without level-shifting circuitry.
It integrates ESD protection and latch-up immunity, with specified performance across 3 V to 16 V supply range and guaranteed operation up to 70°C ambient. The device exhibits 0.3 µV/°C input offset voltage drift and maintains ≥65 dB CMRR and PSRR over temperature - critical for precision DC-coupled measurement systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 5 mV max at 25°C - ensures ≤0.5% gain error in 1 V full-scale instrumentation amplifier stages |
| Input Bias Current | 10–60 pA typical - enables use with >10 MΩ source impedances without significant DC error |
| Input Voltage Noise | 10.8 nV/√Hz at 1 kHz - supports low-noise amplification of microvolt-level sensor outputs |
| Unity-Gain Bandwidth | 4.5 MHz - sufficient for anti-aliasing filters and active RC filter designs up to ~200 kHz |
| Common-Mode Input Range | –0.1 V to (VDD – 1 V) - allows direct interfacing to 0 V-referenced transducers in 3–16 V systems |
| Supply Voltage Range | 3 V to 16 V (0°C to 70°C) - compatible with single-cell Li-ion, 5 V logic rails, and industrial 12 V supplies |
| Slew Rate | 0.5 V/µs (unity gain) - adequate for <10 kHz full-power signal reproduction with <1% distortion |
Pinout & Package
Package: SOIC-8 (D package), 4.9 mm × 6.0 mm body, 1.27 mm pitch, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance node accepting differential signal; requires guard ring layout for leakage-sensitive applications |
| 2 | Non-Inverting Input (Amplifier A) | Accepts reference or sensor signal; common-mode range extends below GND for true single-supply use |
| 3 | Output (Amplifier A) | Rail-to-rail capable; sinks/sours ±30 mA; connects directly to ADC inputs or downstream op-amp stages |
| 4 | V– (Ground / Negative Supply) | Reference node for single-supply operation; must be low-impedance and decoupled with 0.1 µF ceramic |
| 5 | Non-Inverting Input (Amplifier B) | Independent second channel input; identical specs to Pin 2 - enables dual-channel signal conditioning |
| 6 | Inverting Input (Amplifier B) | Matches Pin 1 behavior; supports independent feedback networks per channel |
| 7 | Output (Amplifier B) | Electrically isolated from Output A; usable for differential output stages or separate signal paths |
| 8 | V+ (Positive Supply) | Accepts 3–16 V; internal ESD protection clamps to V+ and V–; requires local 0.1 µF + 10 µF bypassing |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply optimized input stage | Common-mode range includes negative rail - eliminates need for external biasing in 0–5 V systems |
| Ultra-low input bias current | ≤60 pA typical - preserves signal integrity when amplifying from high-Z sources (e.g., glass pH electrodes) |
| Rail-to-rail output swing | Drives to within 50 mV of V– and 50 mV of V+ - maximizes dynamic range in low-voltage data acquisition |
| Low 1/f noise corner | Typical 10.8 nV/√Hz at 1 kHz - outperforms bipolar op-amps above 50 kΩ source impedance |
| ESD-protection circuitry | Rated per JEDEC JS-001 Class 2 (2 kV HBM) - reduces field failure risk during PCB handling and assembly |
Applications
| Medical Sensor Interface | Portable Data Logger |
|---|---|
|
Use Scenario: Amplifying low-amplitude bio-potential signals (ECG, EMG) from dry electrodes in battery-powered wearable devices. IC Role / Device Role / Timing Role: Dual-channel DC-coupled instrumentation front-end providing gain, filtering, and level-shifting before 16-bit SAR ADC sampling. Use Value: 5 mV max VIO and 0.3 µV/°C drift ensure baseline stability over 8-hour wear; 3 V operation extends battery life vs. bipolar alternatives. |
Use Scenario: Signal conditioning for thermistor, RTD, and humidity sensor arrays in field-deployed environmental monitors. IC Role / Device Role / Timing Role: Precision buffer and programmable-gain stage driving multiplexed ADC inputs with minimal offset-induced measurement error. Use Value: 10¹² Ω input impedance prevents loading of high-resistance sensor elements; SOIC-8 footprint simplifies layout in compact enclosures. |
| Industrial Process Controller | Automotive Cabin Sensor Hub |
|
Use Scenario: Isolating and scaling 4–20 mA loop signals into 0–3.3 V ADC ranges for PLC analog input modules. IC Role / Device Role / Timing Role: Dual op-amp implementing precision I/V conversion and output buffering with galvanically isolated power domains. Use Value: Guaranteed 3–16 V operation supports 12 V industrial rails; 65 dB CMRR rejects common-mode noise from motor drives and solenoids. |
Use Scenario: Signal conditioning for cabin temperature, CO₂, and occupancy sensors in automotive infotainment control units. IC Role / Device Role / Timing Role: Low-power dual amplifier providing sensor excitation, amplification, and anti-aliasing prior to microcontroller ADC sampling. Use Value: 1.12–3.2 mA supply current per dual unit enables always-on sensing; A-grade offset ensures <±0.5°C thermal accuracy over 0–70°C. |
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 |
|---|---|---|---|
| TLV2462IDR | Lower VIO (1.6 mV max), higher quiescent current (550 µA/ch), rail-to-rail I/O, 6.4 MHz GBW | Better DC accuracy but higher power; requires tighter layout for RRIO stability | Choose TLV2462IDR when sub-millivolt offset and rail-to-rail input are mandatory; accept 2× supply current penalty. |
| OPA2333AIDR | Zero-drift architecture, 2 µV max VIO, 0.02 µV/°C drift, 350 µA/ch, 350 kHz GBW | Superior long-term DC stability but lower bandwidth; not suitable for >100 kHz signal paths | Choose OPA2333AIDR for ultra-stable DC measurements (e.g., precision weigh scales); avoid for AC-coupled or wideband use. |
Compared with TLV2462IDR and OPA2333AIDR, the TLC272AIDR offers the best balance of low offset (5 mV), low noise (10.8 nV/√Hz), and moderate bandwidth (4.5 MHz) at minimal cost - making it ideal for general-purpose precision analog front-ends where zero-drift or rail-to-rail input is not required.
Availability
TLC272AIDR is available at Aetrix Electronics and suitable for medical sensor interfaces, portable data loggers, industrial process controllers, and automotive cabin sensor hubs requiring stable component supply across production lifecycles.
Supply support for TLC272AIDR 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 decades of expertise in precision op-amps and industrial-grade signal chain solutions.
The TLC272AIDR belongs to TI's TLC27xx precision CMOS op-amp family, designed specifically for cost-sensitive, single-supply applications demanding low input bias current, wide supply range, and robust DC accuracy - especially in sensor signal conditioning and portable instrumentation.
FAQ
What is the maximum input common-mode voltage range for TLC272AIDR at 5 V supply?
At VDD = 5 V, the TLC272AIDR supports a common-mode input voltage range of –0.1 V to 4 V (25°C). This extends below ground, enabling direct connection to 0 V-referenced sensors without external level-shifting circuitry - a key advantage for single-supply systems using the TLC272AIDR.
Does TLC272AIDR support rail-to-rail output swing?
Yes, the TLC272AIDR provides rail-to-rail output capability: low-level output voltage is ≤50 mV above V–, and high-level output is ≥3.2 V below V+ at VDD = 5 V (25°C). This ensures maximum signal swing in low-voltage applications, directly benefiting designs using the TLC272AIDR in battery-powered equipment.
What is the typical input bias current of TLC272AIDR and why does it matter?
The TLC272AIDR has a typical input bias current of 10–60 pA. This ultra-low value minimizes voltage errors when amplifying signals from high-impedance sources such as pH electrodes, photodiodes, or thermistors - preserving accuracy in applications where the TLC272AIDR serves as the first-stage signal conditioner.
Can TLC272AIDR operate from a 3 V supply?
Yes, the TLC272AIDR is fully specified for 3 V to 16 V operation over 0°C to 70°C ambient. At 3 V, it maintains functional performance including input common-mode range down to –0.1 V and output swing within 50 mV of both rails - making the TLC272AIDR suitable for modern low-voltage portable electronics.
How does the input offset voltage drift of TLC272AIDR compare to standard op-amps?
The TLC272AIDR exhibits a temperature coefficient of input offset voltage of only 0.3 µV/°C (25°C to 70°C), significantly better than most general-purpose op-amps. This low drift ensures stable DC accuracy over temperature - a critical attribute for long-duration measurements where the TLC272AIDR is deployed in unregulated environments.
TLC272AIDR 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:
- 5.3V/µs
- Gain Bandwidth Product:
- 2.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.7 pA
- Voltage - Input Offset:
- 900 µV
- Current - Supply:
- 1.4mA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC272AIDR FAQ
1.How can I place an order for TLC272AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC272AIDR 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 TLC272AIDR reliable?
The price and inventory of TLC272AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC272AIDR is usually 5 days.
3.What payment methods are accepted for TLC272AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC272AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC272AIDR?
TLC272AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC272AIDR 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 TLC272AIDR?
For technical support, including TLC272AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC272AIDR requirements.
6.How does Aetrix verify that TLC272AIDR is sourced from the original manufacturer or authorized distributors?
All TLC272AIDR 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 TLC272AIDR meets industry standards.
7.What is the process for return or replacement of TLC272AIDR?
All TLC272AIDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC272AIDR, 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 TLC272AIDR part is unused and in its original packaging.
Return procedure for TLC272AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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