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Texas Instruments TLC25L4BCD
- Part No.:
- TLC25L4BCD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC25L4BCD.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,412
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Product details
Overview
TLC25L4BCD from Texas Instruments is a LinCMOS™ quad operational amplifier optimized for ultra-low-power, single-supply operation across 1.4 V to 16 V. It delivers 2 mV max input offset voltage (at 25°C), 40–92 µA total supply current (over 0°C–70°C), and rail-to-rail common-mode input range extending to the negative rail-enabling precision signal conditioning in battery-powered sensor interfaces and portable instrumentation.
For engineers reviewing the TLC25L4BCD datasheet, TLC25L4BCD pinout, TLC25L4BCD application, or TLC25L4BCD equivalent, key selection criteria include its low-bias architecture (1 pA typical input bias current), 70 nV/√Hz input noise at 1 kHz, unity-gain stability with 1 MΩ load, and compatibility with energy-constrained systems requiring true single-supply functionality down to 1.4 V.
Technical Context
The TLC25L4BCD implements a silicon-gate LinCMOS™ process that achieves stable input-offset voltages with selectable grades (2 mV max for B-suffix), extremely high input impedance (>1012 Ω), and sub-picoampere input bias/offset currents. Its input stage operates with common-mode voltage down to VDD–/GND, enabling direct interfacing with ground-referenced transducers.
It features internal ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.1) and is characterized for commercial temperature range (0°C to 70°C). The device is unity-gain stable with capacitive loads up to 20 pF when driving a 1 MΩ load, supporting robust operation in high-impedance analog front-ends without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 16 V - enables operation from single alkaline or lithium coin cells up to industrial rails |
| Input Offset Voltage (Max) | 2 mV at 25°C - supports precision DC-coupled amplification without trimming in low-cost systems |
| Supply Current (Typ) | 40 µA at 25°C, 5 V - allows multi-year battery life in always-on sensor nodes |
| Input Bias Current (Typ) | 1 pA at 25°C - preserves signal integrity in circuits with >100 MΩ source impedances |
| Common-Mode Input Range | Includes negative rail (VDD–/GND) - eliminates need for level-shifting when amplifying ground-referenced signals |
| Unity-Gain Bandwidth | 85 kHz at 5 V, 1 MΩ load - sufficient for DC–audio-band sensor signal conditioning and filtering |
| Input Noise Voltage | 70 nV/√Hz at 1 kHz - suitable for low-level thermistor, strain gauge, or pH electrode amplification |
Pinout & Package
Package: 14-pin SOIC (D package), surface-mount, tape-and-reel compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Amplifier 1 output | Drives high-impedance loads directly; rail-to-rail swing capability simplifies interface to ADCs |
| 1IN– | Amplifier 1 inverting input | High-impedance node; accepts feedback networks without loading error sources |
| 1IN+ | Amplifier 1 non-inverting input | Accepts ground-referenced sensor outputs without level shifters |
| VDD | Positive supply | Single supply input; supports 1.4 V minimum for ultra-low-voltage operation |
| 2IN+ | Amplifier 2 non-inverting input | Independent input for multi-channel sensing or differential pair configuration |
| 2IN– | Amplifier 2 inverting input | Supports active filter topologies with minimal input current error |
| 2OUT | Amplifier 2 output | Provides second independent gain stage for signal chain partitioning |
| 4OUT | Amplifier 4 output | Enables quad-channel buffering or independent reference generation |
| 4IN– | Amplifier 4 inverting input | Used in summing or transimpedance configurations with negligible input current |
| 4IN+ | Amplifier 4 non-inverting input | Accepts reference voltages or sensor inputs with no DC path to supply |
| VDD–/GND | Negative supply / ground | Reference node for single-supply operation; ties to system ground |
| 3IN+ | Amplifier 3 non-inverting input | Supports simultaneous multi-sensor acquisition with shared supply domain |
| 3OUT | Amplifier 3 output | Third independent output for auxiliary functions like bias generation or comparator hysteresis |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 40–92 µA total for four op-amps - extends battery life in portable medical and environmental monitors |
| True single-supply operation | Common-mode input includes VDD–/GND - eliminates dual supplies in data loggers and handheld meters |
| Low input offset voltage grade | 2 mV max (B-suffix) - reduces calibration burden in factory-programmed sensor modules |
| Sub-picoampere input bias current | 1 pA typical - preserves accuracy in high-Z pH electrodes, photodiode transimpedance, and piezoelectric sensors |
| Rail-to-rail input common-mode range | Extends to negative rail - enables direct connection of thermocouples and bridge sensors without bias resistors |
Applications
| Portable Gas Sensor Interface | Low-Power Data Logger Front-End |
|---|---|
Use Scenario: Amplifying microamp-level current from electrochemical gas sensors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with ultra-low input bias current and rail-to-rail input to capture full sensor dynamic range. Use Value: 1 pA input bias prevents sensor current loss; 40 µA total quiescent current enables >5-year battery life at 1-sample-per-minute duty cycle. | Use Scenario: Conditioning analog outputs from multiple temperature/humidity sensors in an industrial asset tracker. IC Role / Device Role / Timing Role: Quad-channel buffer and gain stage before SAR ADC sampling, operating from a single 3.3-V LDO. Use Value: 2 mV max VIO ensures <0.1% gain error across channels; 1.4-V minimum supply supports brownout resilience during battery discharge. |
| Medical Pulse Oximeter Analog Front-End | Remote Soil Moisture Monitoring Node |
Use Scenario: Amplifying weak red/IR photodiode signals in battery-operated wearable oximeters. IC Role / Device Role / Timing Role: Low-noise (70 nV/√Hz), low-power transimpedance amplifier with DC-coupled input for AC+DC photoplethysmography. Use Value: Enables detection of sub-millivolt pulsatile signals while consuming <100 µW per channel - critical for continuous 24/7 monitoring. | Use Scenario: Signal conditioning for resistive soil moisture probes deployed in solar-powered agricultural IoT nodes. IC Role / Device Role / Timing Role: High-impedance buffer and precision difference amplifier for ratiometric measurement against reference voltage. Use Value: 1 pA input bias avoids probe polarization errors; rail-to-rail input accommodates probe voltage swings near ground without external biasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464CDR | Higher supply current (550 µA typ), rail-to-rail I/O, 6.5 V max supply | Better AC performance (2.2 MHz GBW) but incompatible with sub-2-V operation | Select when higher speed and rail-to-rail output are required and supply ≥2.7 V is available |
| LPV521MG/NOPB | Single-channel, 320 nA supply current, 1.8 V min supply, 10 µV VIO max | Lower power but requires four separate packages; not pin-compatible | Select when ultra-low power (<1 µA) dominates over integration and board space constraints |
Compared with TLV2464CDR and LPV521MG/NOPB, the TLC25L4BCD uniquely balances sub-100 µA total supply current, 1.4-V operation, and quad integration - making it irreplaceable in compact, long-life, single-supply sensor systems where voltage headroom and board area are constrained.
Availability
TLC25L4BCD is available at Aetrix Electronics and suitable for portable medical devices, environmental sensor nodes, battery-powered instrumentation, and industrial data loggers requiring stable component supply across extended product lifecycles.
Supply support for TLC25L4BCD 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, longevity, and industrial-grade qualification.
The TLC25L4BCD belongs to TI's LinCMOS™ precision op-amp family, designed specifically for ultra-low-power, single-supply applications in battery-operated and energy-harvesting systems where input bias current, supply voltage range, and offset stability are critical.
FAQ
What is the maximum input offset voltage specification for the TLC25L4BCD?
The TLC25L4BCD has a maximum input offset voltage 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 selected for applications requiring tighter DC accuracy than the standard C or A versions, and is verified per the SLOS003G datasheet under VDD = 5 V test conditions with RL = 1 MΩ.
Can the TLC25L4BCD operate from a 1.5-V alkaline battery?
Yes, the TLC25L4BCD is fully specified to operate down to 1.4 V supply voltage, making it compatible with single 1.5-V alkaline or zinc-carbon cells across their full discharge curve. At 1.4 V, it maintains functional amplification with reduced output swing and bandwidth, as confirmed in the "Electrical Characteristics at VDD = 1.4 V" section of the datasheet.
Does the TLC25L4BCD support rail-to-rail input operation?
Yes, the TLC25L4BCD supports rail-to-rail common-mode input voltage operation, with the input range explicitly including the negative rail (VDD–/GND). This allows direct connection of ground-referenced sensors such as thermistors, bridge circuits, and pH electrodes without external biasing networks - a key feature documented in the "Recommended Operating Conditions" table.
What is the typical input bias current of the TLC25L4BCD?
The TLC25L4BCD exhibits a typical input bias current of 1 pA at 25°C, with a maximum of 600 pA over the full 0°C to 70°C temperature range. This ultra-low value is enabled by the LinCMOS™ silicon-gate process and is critical for preserving signal integrity in high-impedance sensor interfaces, as validated in the "Electrical Characteristics" tables for VDD = 5 V and VDD = 10 V.
Is the TLC25L4BCD unity-gain stable with capacitive loads?
Yes, the TLC25L4BCD is unity-gain stable when driving a 1 MΩ load with up to 20 pF of capacitive load, as demonstrated in the "Operating Characteristics" section for VDD = 5 V. Stability is maintained without external compensation, supporting direct connection to ADC input capacitors or long PCB traces in low-frequency sensor signal chains.
TLC25L4BCD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Single-Ended
- Slew Rate:
- 0.04V/µs
- Gain Bandwidth Product:
- 110 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 340 µV
- Current - Supply:
- 2.7mA (x4 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 1.4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC25L4BCD FAQ
1.How can I place an order for TLC25L4BCD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC25L4BCD 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 TLC25L4BCD reliable?
The price and inventory of TLC25L4BCD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC25L4BCD is usually 5 days.
3.What payment methods are accepted for TLC25L4BCD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC25L4BCD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC25L4BCD?
TLC25L4BCD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC25L4BCD 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 TLC25L4BCD?
For technical support, including TLC25L4BCD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC25L4BCD requirements.
6.How does Aetrix verify that TLC25L4BCD is sourced from the original manufacturer or authorized distributors?
All TLC25L4BCD 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 TLC25L4BCD meets industry standards.
7.What is the process for return or replacement of TLC25L4BCD?
All TLC25L4BCD units undergo pre-shipment inspection (PSI). If there is an issue with TLC25L4BCD, 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 TLC25L4BCD part is unused and in its original packaging.
Return procedure for TLC25L4BCD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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