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Texas Instruments TLC272BCP
- Part No.:
- TLC272BCP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC272BCP.pdf
- Description:
- IC CMOS 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:223
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Product details
Overview
TLC272BCP from Texas Instruments is a precision dual CMOS operational amplifier optimized for single-supply operation, featuring 2 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–70°C and delivers 4.5 MHz unity-gain bandwidth with 0.5 V/μs slew rate - used in sensor signal conditioning, industrial analog front-ends, and battery-powered instrumentation.
For engineers reviewing the TLC272BCP datasheet, TLC272BCP pinout, TLC272BCP application, or TLC272BCP equivalent, key selection criteria include input offset voltage grade (B-grade = 2 mV), common-mode input range extending below ground, low bias current (<60 pA), and PDIP-8 package compatibility with legacy through-hole layouts.
Technical Context
The TLC272BCP uses a polysilicon-gate CMOS process to achieve high input impedance (>10¹² Ω), ultra-low input bias current (10–60 pA), and stable offset voltage drift (0.3 μV/°C). Its input stage supports single-supply operation with common-mode voltage range from –0.1 V to VDD–1 V (25°C), enabling direct interfacing with grounded sensors and microcontroller ADC references.
It integrates ESD protection circuitry and latch-up immunity, and its output drives 10 kΩ loads while maintaining 65–80 dB CMRR and 65–120 dB supply-voltage rejection across temperature. The device is not rail-to-rail input but supports input voltages below the negative rail - critical for true single-supply transducer amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 2 mV max at 25°C - enables accurate DC-coupled amplification of mV-level sensor outputs without nulling circuitry |
| Supply Voltage Range | 3 V to 16 V - supports direct interface with 3.3 V, 5 V, and 12 V systems including TTL/HCMOS logic rails |
| Input Bias Current | 10–60 pA typical - permits use of >1 MΩ feedback networks without significant error in high-impedance pH or photodiode circuits |
| Unity-Gain Bandwidth | 4.5 MHz - sufficient for anti-aliasing filters up to ~200 kHz and fast-settling data acquisition stages |
| Slew Rate | 0.5 V/μs - limits full-scale step response to ~4 μs for 2 Vpp signals, suitable for medium-speed control loops |
| Common-Mode Input Range | Extends 0.1 V below negative rail - allows direct amplification of unipolar transducer outputs referenced to ground |
| Output Voltage Swing | Within 50 mV of negative rail and within 50 mV of positive rail (at 10 kΩ) - maximizes dynamic range in single-supply configurations |
Pinout & Package
The TLC272BCP is supplied in an 8-pin PDIP (Plastic Dual In-line Package) with 9.81 mm × 9.43 mm footprint, designed for through-hole mounting and manual prototyping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplifier A output - drives external load; capable of sourcing/sinking ±30 mA, swings to within 50 mV of rails |
| 2 | Inverting Input A | High-impedance (≥10¹² Ω) node for feedback or signal inversion; sensitive to PCB leakage above 100 fA |
| 3 | Non-Inverting Input A | High-impedance reference or sensor input; common-mode range includes ground for single-supply biasing |
| 4 | V– (GND) | Negative supply terminal - serves as circuit ground reference; all inputs and outputs referenced to this pin |
| 5 | Non-Inverting Input B | Independent high-Z input for second channel; identical specs to Pin 3, supports dual-channel signal processing |
| 6 | Inverting Input B | Second amplifier inverting input - used for differential gain stages or independent signal paths |
| 7 | Output B | Amplifier B output - electrically isolated from Output A; shares same supply pins and thermal environment |
| 8 | V+ (VDD) | Positive supply terminal - accepts 3–16 V; total supply current ≤3.6 mA (two amps, 25°C) |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply optimized architecture | Enables direct operation from 3 V batteries or 5 V logic rails without split supplies or level-shifting circuitry |
| Input common-mode range below ground | Allows amplification of 0–VREF sensor outputs (e.g., thermocouples, strain gauges) without external bias resistors |
| Low input voltage noise (10.8 nV/√Hz) | Preserves SNR in high-gain, low-frequency sensor interfaces where thermal noise dominates |
| ESD-protection circuitry | Withstands ≥2 kV HBM per JESD22-A114 - reduces field failure risk during handling and board assembly |
| Latch-up immunity | Guarantees no destructive latch-up under normal operating conditions, even with transient overvoltage on inputs |
Applications
| Industrial Sensor Signal Conditioning | Portable Instrumentation Amplifiers |
|---|---|
Use Scenario: Amplifying low-level mV outputs from RTDs, thermocouples, or pressure bridges in factory-floor PLC modules. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset trimming capability and stable DC performance over temperature. Use Value: 2 mV max VIO and 0.3 μV/°C drift eliminate need for periodic calibration in fixed-installation equipment. | Use Scenario: Battery-powered handheld multimeters or environmental monitors requiring low quiescent current and wide supply range. IC Role / Device Role / Timing Role: Dual-channel signal conditioner powering both analog front-end and reference buffer from single 3.3 V or 9 V source. Use Value: 3 V minimum supply and 3.2 mA max IDD enable >100-hour operation on AA cells without voltage regulation overhead. |
| Automotive Cabin Sensors | Legacy Industrial Control Interfaces |
Use Scenario: Occupancy detection via capacitive touch or CO₂ sensing in automotive HVAC systems with 5 V supply rails. IC Role / Device Role / Timing Role: High-Z input buffer and active filter stage preceding MCU ADC, rejecting EMI from nearby switching regulators. Use Value: 80 dB PSRR and 65 dB CMRR suppress power rail noise and common-mode interference from 12 V vehicle systems. | Use Scenario: Retrofitting analog I/O modules in aging PLC cabinets using existing PDIP footprints and 12 V/24 V supplies. IC Role / Device Role / Timing Role: Drop-in replacement for obsolete LM358 or TL072 in dual-opamp positions requiring improved offset and noise. Use Value: Pin-compatible PDIP-8 package and identical pinout allow board-level replacement without layout changes. |
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 |
|---|---|---|---|
| TLC272CP | Higher input offset voltage (10 mV max), same package and pinout | Lower-cost option where <2 mV offset is not required, e.g., non-critical comparator hysteresis or LED drivers | Select TLC272CP only when system-level accuracy tolerances exceed ±5 mV at room temperature |
| TLV272IP | Lower supply current (1.25 mA typ), rail-to-rail input, but 3.5 mV VIO and narrower supply range (2.7–16 V) | Better suited for ultra-low-power designs with R-R input requirements, but less precise DC performance | Choose TLV272IP when battery life is prioritized over DC accuracy, and input signals span full supply range |
Compared with TLC272CP and TLV272IP, the TLC272BCP provides the tightest input offset specification (2 mV) in the TLC272 family while retaining PDIP-8 compatibility and proven industrial temperature stability - making it optimal for cost-sensitive, accuracy-critical analog signal chains where layout reuse is mandatory.
Availability
TLC272BCP is available at Aetrix Electronics and suitable for industrial sensor conditioning, portable instrumentation, and legacy control system upgrades requiring stable component supply and long-term obsolescence management.
Supply support for TLC272BCP 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 personal electronics markets.
The TLC27xx family was engineered for precision analog signal conditioning in cost-sensitive industrial systems, emphasizing low offset, low noise, and single-supply operability without sacrificing robustness or manufacturability.
FAQ
What is the maximum input offset voltage specification for TLC272BCP at 25°C?
The TLC272BCP has a maximum input offset voltage of 2 mV at 25°C, as specified in the Electrical Characteristics table for the B-grade C-suffix variant. This value is guaranteed across production lots and forms the basis for DC accuracy in precision amplification stages. The TLC272BCP maintains this grade across its full operating temperature range (0°C to 70°C), with worst-case drift limited to 0.3 μV/°C.
Does TLC272BCP support true rail-to-rail input operation?
No, the TLC272BCP does not support rail-to-rail input. Its common-mode input voltage range extends 0.1 V below the negative rail (ground) but only up to VDD – 1 V at 25°C - not to the positive rail. This design enables single-supply operation with grounded sensors while maintaining CMOS input stage integrity. For full rail-to-rail input, consider TI's TLV272IP or OPA2333, which are not pin-compatible with TLC272BCP.
Can TLC272BCP operate from a 3.3 V supply in industrial environments?
Yes, the TLC272BCP is fully specified for 3 V minimum supply voltage across the 0°C to 70°C range, making it compatible with standard 3.3 V logic rails. At 3.3 V, it delivers usable output swing (within 50 mV of both rails), 4.5 MHz bandwidth, and maintains input bias current below 60 pA. However, slew rate drops to ~0.3 V/μs and output drive capability decreases - verify load and settling time requirements in final design.
What is the recommended bypassing strategy for TLC272BCP in noise-sensitive applications?
TI recommends a 0.1 μF ceramic capacitor placed as close as possible to Pins 4 (GND) and 8 (VDD) of the TLC272BCP, with short, low-inductance traces. For mixed-signal systems sharing supply rails with digital ICs, add a 10 μF tantalum or aluminum electrolytic capacitor upstream. Avoid shared ground paths between analog and digital sections; use star grounding and guard rings around input traces to mitigate leakage currents that could exceed the device's 60 pA bias current.
Is TLC272BCP pin-compatible with legacy dual op-amps like LM358 or TL072?
The TLC272BCP shares the standard 8-pin PDIP pinout with LM358 and TL072 (Pin 1 = Out A, Pin 2 = Inv A, Pin 3 = Non-Inv A, Pin 4 = V–, Pin 5 = Non-Inv B, Pin 6 = Inv B, Pin 7 = Out B, Pin 8 = V+), enabling direct socket replacement. However, differences in input structure (CMOS vs bipolar/JFET), offset voltage, and supply current require verification of loop stability, bias network values, and thermal dissipation in the target application before substitution.
TLC272BCP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- 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:
- 290 µV
- Current - Supply:
- 1.9mA (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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLC272BCP FAQ
1.How can I place an order for TLC272BCP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC272BCP 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 TLC272BCP reliable?
The price and inventory of TLC272BCP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC272BCP is usually 5 days.
3.What payment methods are accepted for TLC272BCP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC272BCP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC272BCP?
TLC272BCP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC272BCP 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 TLC272BCP?
For technical support, including TLC272BCP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC272BCP requirements.
6.How does Aetrix verify that TLC272BCP is sourced from the original manufacturer or authorized distributors?
All TLC272BCP 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 TLC272BCP meets industry standards.
7.What is the process for return or replacement of TLC272BCP?
All TLC272BCP units undergo pre-shipment inspection (PSI). If there is an issue with TLC272BCP, 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 TLC272BCP part is unused and in its original packaging.
Return procedure for TLC272BCP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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