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Texas Instruments TLC252BCD
- Part No.:
- TLC252BCD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC252BCD.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,754
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Product details
Overview
TLC252BCD from Texas Instruments is a LinCMOS™ dual operational amplifier optimized for low-power, single-supply operation with 2-mV maximum input offset voltage (VIO), 1.4 V to 16 V supply range, and rail-to-rail common-mode input extending to the negative rail - enabling precision signal conditioning in battery-powered sensor interfaces and portable instrumentation.
For engineers reviewing the TLC252BCD datasheet, TLC252BCD pinout, TLC252BCD application, or TLC252BCD equivalent, this device supports critical design requirements including ultra-low quiescent current (34 µA typical at 5 V), high input impedance (>10¹² Ω), and stable unity-gain operation - essential for transducer interfacing, active filtering, and low-voltage analog front-ends.
Technical Context
The TLC252BCD implements a silicon-gate LinCMOS™ process delivering inherently low input bias current (≤60 pA at 25°C) and exceptional DC precision via factory-trimmed offset voltage (2 mV max). Its input stage operates down to the negative rail, supporting true single-supply configurations without level-shifting circuitry.
It features internal ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.1), operates across 0°C to 70°C, and maintains stability with capacitive loads up to 20 pF - verified by phase margin ≥43° at unity gain with 5 V supply and 100 kΩ load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (VIO) | 2 mV max at 25°C - enables high-accuracy DC-coupled amplification without external trimming in low-gain sensor signal chains. |
| Supply Voltage Range | 1.4 V to 16 V - supports direct operation from single alkaline, Li-ion, or solar-cell sources without regulation. |
| Quiescent Current (IDD) | 34 µA typical at 5 V (two amps) - extends battery life in always-on monitoring systems beyond 10 years on coin cells. |
| Input Common-Mode Range | Extends to VDD–/GND - eliminates need for input biasing resistors in single-supply transducer interfaces. |
| Unity-Gain Bandwidth (B1) | 1.7 MHz at 5 V - sufficient for anti-aliasing filters, audio preamps, and medium-speed data acquisition up to ~100 kHz. |
| Input Bias Current (IIB) | ≤60 pA at 25°C - preserves signal integrity when driving high-impedance sources like piezoelectric sensors or pH electrodes. |
| ESD Rating | 2000 V HBM - reduces risk of field failure during PCB handling and assembly in uncontrolled environments. |
Pinout & Package
Package: 8-pin SOIC (D package), surface-mount, tape-and-reel compatible (R suffix available).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A (Amplifier A output) | Drives low-impedance loads up to 10 kΩ; swing limited to ~0.05 V above GND and ~0.2 V below VDD at 5 V. |
| 2 | IN– A (Amplifier A inverting input) | High-impedance node; accepts differential signals referenced to GND or biased within VICR (–0.2 V to 3.5 V at 5 V). |
| 3 | IN+ A (Amplifier A non-inverting input) | Accepts inputs down to GND; enables single-supply follower or summing configurations without level shift. |
| 4 | VDD– / GND | Ground reference for both amplifiers; must be low-impedance path to minimize noise coupling between channels. |
| 5 | VDD | Positive supply rail; decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin for stability. |
| 6 | OUT B (Amplifier B output) | Independent output channel; identical electrical specs to OUT A - supports dual-path signal processing. |
| 7 | IN– B (Amplifier B inverting input) | Electrically isolated from IN– A; allows independent feedback networks per channel. |
| 8 | IN+ B (Amplifier B non-inverting input) | Matches IN+ A behavior; supports dual-channel instrumentation or stereo analog signal paths. |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ process technology | Delivers picoampere-level input bias current and femtofarad-level input capacitance for minimal loading of high-Z sensors. |
| True single-supply operation | Common-mode input includes GND, eliminating need for dual supplies or charge pumps in portable medical devices. |
| Low-voltage capability | Operates down to 1.4 V - enables direct interface with emerging low-power microcontrollers and energy-harvesting ICs. |
| Factory-trimmed offset grade | B-suffix guarantees ≤2 mV VIO - reduces calibration overhead in production test for industrial sensor modules. |
| Stable unity-gain configuration | No external compensation required - simplifies layout and reduces BOM count in filter and buffer applications. |
Applications
| Portable Gas Sensor Interface | Medical Pulse Oximeter Front-End |
|---|---|
Use Scenario: Amplifying weak, low-frequency signals from electrochemical gas sensors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Dual-channel transducer amplifier providing gain and filtering before ADC sampling at 100 Hz. Use Value: 34 µA total supply current extends 10-year battery life; rail-to-rail input captures full sensor dynamic range without biasing. |
Use Scenario: Conditioning red/IR photodiode currents in wearable pulse oximeters with strict size and power constraints. IC Role / Device Role / Timing Role: Low-noise, low-drift dual op-amp for synchronous demodulation and ambient light rejection. Use Value: 2-mV VIO ensures accurate SpO₂ calculation across temperature; LinCMOS™ input prevents signal loss from photodiode leakage. |
| Solar-Powered Environmental Monitor | Industrial 4–20 mA Loop Receiver |
Use Scenario: Signal conditioning for thermistor, humidity, and CO₂ sensors in off-grid weather stations powered by small PV panels. IC Role / Device Role / Timing Role: Precision dual amplifier for ratiometric sensor excitation and differential measurement. Use Value: 1.4-V minimum supply enables operation during low-light conditions; 2000-V ESD rating withstands outdoor handling. |
Use Scenario: Converting 4–20 mA loop current to ground-referenced voltage in programmable logic controller (PLC) input modules. IC Role / Device Role / Timing Role: Dual op-amp implementing I-to-V conversion and signal buffering for isolation and ADC interface. Use Value: Rail-to-rail input accommodates wide common-mode range of loop receivers; low IDD minimizes self-heating error in precision shunt designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462CD | Higher supply current (550 µA), lower VIO (0.6 mV), rail-to-rail output (TLC252BCD has only rail-to-rail input) | Preferred where output swing to VDD is required; unsuitable for ultra-low-power (<100 µA) designs | Select TLV2462CD when output headroom to VDD is critical and power budget allows >15× higher IDD. |
| LMV358IDR | Wider bandwidth (1 MHz), higher VIO (3 mV), no guaranteed 1.4-V operation - min VDD = 2.7 V | Used in cost-sensitive consumer electronics; not viable for sub-2.7-V battery systems | Choose LMV358IDR for general-purpose dual op-amp use above 2.7 V; avoid for 1.4–2.5 V energy-harvesting applications. |
Compared with TLV2462CD and LMV358IDR, the TLC252BCD uniquely balances ultra-low power (34 µA), guaranteed 1.4-V operation, and 2-mV VIO - making it irreplaceable in long-life, single-cell, and energy-constrained analog signal chains where output swing beyond GND suffices.
Availability
TLC252BCD is available at Aetrix Electronics and suitable for portable medical devices, environmental sensor nodes, and solar-powered instrumentation requiring stable component supply across extended product lifecycles.
Supply support for TLC252BCD 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 TLC252 family belongs to TI's legacy LinCMOS™ precision op-amp portfolio, designed specifically for ultra-low-power, single-supply industrial and portable instrumentation where DC accuracy and supply flexibility outweigh speed demands.
FAQ
What is the maximum input offset voltage specification for TLC252BCD?
The TLC252BCD is specified with a maximum input offset voltage (VIO) of 2 mV at 25°C and 3 mV across the full 0°C to 70°C operating temperature range. This B-suffix grade is factory tested and binned to guarantee tighter DC performance than standard C-grade (10 mV max) or A-grade (5 mV max) variants, directly reducing calibration burden in precision analog designs.
Does TLC252BCD support true single-supply operation with input signals at ground potential?
Yes, the TLC252BCD supports true single-supply operation: its common-mode input voltage range includes the negative rail (VDD–/GND), allowing inputs down to 0 V at all supply voltages from 1.4 V to 16 V. This eliminates the need for input biasing networks in applications such as sensor amplification and battery-monitoring circuits.
What is the typical supply current consumption of TLC252BCD at 5 V?
The TLC252BCD draws a typical supply current (IDD) of 34 µA at 5 V and 25°C for both amplifiers combined. At 70°C, IDD remains below 28 µA - confirming its suitability for always-on, battery-operated systems where multi-year operational life is required without duty cycling.
Can TLC252BCD drive capacitive loads, and what is its phase margin?
Yes, the TLC252BCD is stable driving capacitive loads up to 20 pF. At 5 V supply and 100 kΩ load, its phase margin is ≥43° at unity gain (measured at f = B1 ≈ 1.7 MHz), ensuring robust step response without peaking or oscillation in buffered filter and sensor interface applications.
Is TLC252BCD pin-compatible with other devices in the TLC25x2 family?
Yes, the TLC252BCD shares identical 8-pin SOIC (D) package pinout and footprint with all members of the TLC252, TLC25L2, and TLC25M2 families - including TLC252CD, TLC25L2BCD, and TLC25M2BCD. This allows drop-in substitution based on performance trade-offs (bandwidth, bias current, supply current) without PCB redesign.
TLC252BCD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 2.9V/µs
- Gain Bandwidth Product:
- 2.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.6 pA
- Voltage - Input Offset:
- 290 µV
- Current - Supply:
- 1.9mA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 1.4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC252BCD FAQ
1.How can I place an order for TLC252BCD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC252BCD 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 TLC252BCD reliable?
The price and inventory of TLC252BCD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC252BCD is usually 5 days.
3.What payment methods are accepted for TLC252BCD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC252BCD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC252BCD?
TLC252BCD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC252BCD 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 TLC252BCD?
For technical support, including TLC252BCD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC252BCD requirements.
6.How does Aetrix verify that TLC252BCD is sourced from the original manufacturer or authorized distributors?
All TLC252BCD 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 TLC252BCD meets industry standards.
7.What is the process for return or replacement of TLC252BCD?
All TLC252BCD units undergo pre-shipment inspection (PSI). If there is an issue with TLC252BCD, 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 TLC252BCD part is unused and in its original packaging.
Return procedure for TLC252BCD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC252BCD Tags
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