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Texas Instruments TLC25L4CDR
- Part No.:
- TLC25L4CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC25L4CDR.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,600
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Product details
Overview
TLC25L4CDR from Texas Instruments is a LinCMOS™ quad operational amplifier optimized for ultra-low-power, single-supply operation down to 1.4 V. It delivers 40 µA typical supply current per amplifier, 10 mV max input offset voltage (C-grade), rail-to-rail common-mode input range including the negative rail, and 70 nV/√Hz input noise at 1 kHz - enabling precision signal conditioning in battery-powered sensor interfaces and portable instrumentation.
For engineers reviewing the TLC25L4CDR datasheet, TLC25L4CDR pinout, TLC25L4CDR application, or TLC25L4CDR equivalent, this device is selected for low-voltage analog front-ends where high input impedance (>1012 Ω), sub-100-pA bias current, and stable DC performance across 0°C to 70°C are critical design requirements.
Technical Context
The TLC25L4CDR uses Texas Instruments' silicon-gate LinCMOS™ process to achieve picoampere-level input bias and offset currents with stable DC parameters over temperature. Its input stage operates with true single-supply capability, allowing the common-mode input voltage to extend to VDD–/GND, and its output swing is specified with 1 MΩ load for low-bias operation.
It is internally compensated for unity-gain stability and features ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.1). The device is not rail-to-rail output - VOH/VOL are load-dependent and specified with RL = 1 MΩ at VDD = 5 V and 10 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 16 V - supports coin-cell (1.5 V) and multi-cell battery systems without level-shifting. |
| Supply Current (4 amps) | 40 µA typ at VDD = 5 V - enables multi-year operation in always-on sensor nodes. |
| Input Offset Voltage (Max) | 10 mV at 25°C - suitable for medium-precision DC-coupled amplification (e.g., thermistor, strain gauge). |
| Input Bias Current (Typ) | 1 pA at 25°C - preserves signal integrity in >100 MΩ feedback/resistor networks. |
| Common-Mode Input Range | Includes VDD–/GND - allows direct interfacing to ground-referenced transducers without level shifters. |
| Unity-Gain Bandwidth | 85 kHz typ at VDD = 5 V - adequate for DC–10 kHz sensor signal conditioning and active filtering. |
| Input Noise Density | 70 nV/√Hz at f = 1 kHz - appropriate for low-frequency (<10 kHz) precision amplification with minimal added noise. |
Pinout & Package
Package: 14-pin SOIC (D package), tape-and-reel (suffix R), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Amplifier 1 output | Drives external load; output swing limited by supply and load (RL = 1 MΩ typical for low-bias mode). |
| 1IN– | Amplifier 1 inverting input | Differential input node; high-impedance (≥1012 Ω); accepts signals down to VDD–/GND. |
| 1IN+ | Amplifier 1 non-inverting input | Differential input node; identical impedance and voltage range as 1IN–. |
| VDD | Positive supply rail | Single supply connection; supports 1.4–16 V; decoupling capacitor recommended near pin. |
| 2IN+ | Amplifier 2 non-inverting input | Independent input for second op-amp; same electrical characteristics as 1IN+. |
| 2IN– | Amplifier 2 inverting input | Independent input for second op-amp; same electrical characteristics as 1IN–. |
| 2OUT | Amplifier 2 output | Independent output; electrically isolated from other amplifiers on die. |
| 4OUT | Amplifier 4 output | Output of fourth amplifier; pin 14 is dedicated to this function (no shared terminals). |
| 4IN– | Amplifier 4 inverting input | Input for fourth amplifier; matches performance of 1IN–/2IN–/3IN–. |
| 4IN+ | Amplifier 4 non-inverting input | Input for fourth amplifier; matches performance of 1IN+/2IN+/3IN+. |
| VDD–/GND | Negative supply / ground reference | Return path for all four amplifiers; must be connected to system ground or negative rail. |
| 3IN+ | Amplifier 3 non-inverting input | Third amplifier input; fully independent; no internal connection to other pins. |
| 3OUT | Amplifier 3 output | Third amplifier output; pin 8 is dedicated output (not shared or multiplexed). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA per amplifier enables >10-year battery life in continuous-sense applications. |
| Rail-to-rail input common-mode range | Extends to VDD–/GND, eliminating need for input biasing resistors in single-supply transducer interfaces. |
| Picoampere input bias current | 1 pA typical ensures minimal error in high-impedance sensor circuits (e.g., pH electrodes, photodiode TIA feedback). |
| Stable DC performance over temperature | 1.1 µV/°C offset drift (typ) supports accurate long-term measurements without recalibration. |
| ESD-protected inputs | Rated to 2000 V HBM allows safe handling during PCB assembly and field service. |
Applications
| Portable Gas Sensor Front-End | Low-Power Thermistor Signal Chain |
|---|---|
Use Scenario: Amplifying microvolt-level output from electrochemical gas sensors powered by CR2032 coin cell (3 V). IC Role / Device Role / Timing Role: TLC25L4CDR serves as the first-stage instrumentation amplifier with gain = 100, configured in single-supply non-inverting topology. Use Value: 40 µA total supply current (all four amps) extends sensor node lifetime beyond 5 years; 1 pA bias current prevents loading of high-impedance sensor electrodes. | Use Scenario: Linearizing and amplifying resistance changes from NTC thermistors in wearable health monitors. IC Role / Device Role / Timing Role: TLC25L4CDR implements constant-current excitation + differential amplification in a 1.8-V–3.3-V system. Use Value: Rail-to-rail input allows direct connection to thermistor divider without level-shifting; 10 mV VIO max ensures <0.5°C measurement error across 0–70°C. |
| Remote Environmental Data Logger | Low-Voltage Battery Monitoring Circuit |
Use Scenario: Conditioning outputs from multiple analog sensors (humidity, pressure, light) in solar-powered field-deployed loggers. IC Role / Device Role / Timing Role: TLC25L4CDR provides simultaneous signal buffering and anti-alias filtering for four independent sensor channels. Use Value: 1.4-V minimum supply enables operation directly from partially discharged LiFePO₄ cells; 70 nV/√Hz noise preserves SNR in low-level analog signals. | Use Scenario: Measuring cell voltage and current sense in rechargeable lithium battery packs with 2.5–4.2 V operating range. IC Role / Device Role / Timing Role: TLC25L4CDR configures as differential amplifier for shunt-based current sensing and buffer for voltage divider feedback. Use Value: Common-mode input range including GND allows direct shunt measurement referenced to battery negative terminal; low IDD minimizes self-heating error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC27L4CDR | Higher VIO max (15 mV), same 40 µA IDD, identical SOIC-14 package and pinout. | Less precise DC performance; suited for less demanding low-power apps where cost is prioritized over offset. | Select TLC27L4CDR only if 15-mV VIO is acceptable and legacy compatibility with TLC27L4 footprint is required. |
| LP324DR | Higher supply current (120 µA typ), 3-mV VIO max, rail-to-rail output, same SOIC-14 package. | Requires higher power budget but delivers better DC accuracy and full rail-to-rail output swing. | Choose LP324DR when output swing to within 10 mV of rails is mandatory and 3× higher IDD is tolerable. |
Compared with TLC27L4CDR, the TLC25L4CDR offers tighter input offset control (10 mV vs. 15 mV) at identical power and pinout; compared with LP324DR, it trades rail-to-rail output and lower VIO for 3× lower supply current - making it optimal for energy-constrained, medium-accuracy analog front-ends.
Availability
TLC25L4CDR is available at Aetrix Electronics and suitable for portable medical devices, environmental sensor nodes, and battery management systems requiring stable component supply with long lifecycle support.
Supply support for TLC25L4CDR 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, embedded processing, and connectivity solutions with over 90 years of innovation in precision analog ICs.
The TLC25L4CDR belongs to TI's LinCMOS™ low-power op-amp family, designed specifically for single-supply, battery-operated instrumentation where ultra-low bias current and wide supply range are essential.
FAQ
What is the maximum operating supply voltage for the TLC25L4CDR?
The TLC25L4CDR supports an absolute maximum supply voltage of 18 V, but its recommended operating range is 1.4 V to 16 V. Operation above 16 V risks exceeding safe dissipation limits and may degrade long-term reliability. At 16 V, the device draws ~92 µA (four amps) and maintains full functionality across 0°C to 70°C.
Does the TLC25L4CDR support true rail-to-rail output swing?
No, the TLC25L4CDR does not provide rail-to-rail output. At VDD = 5 V with RL = 1 MΩ, VOH is typically 3.2–4.1 V and VOL is 0–50 mV. Output swing is load-dependent and improves with higher load resistance; it cannot reach within 100 mV of either rail under standard test conditions.
Can the TLC25L4CDR be used with a single 1.5-V alkaline battery?
Yes, the TLC25L4CDR is explicitly characterized for operation down to 1.4 V and functions reliably with a fresh 1.5-V alkaline cell. At 1.5 V, it delivers usable gain and bandwidth (though unity-gain bandwidth drops to ~10 kHz), and its input common-mode range still includes GND - making it ideal for ultra-low-voltage sensor interfaces.
How does the input offset voltage of the TLC25L4CDR compare to the TLC25L4ACDR variant?
The TLC25L4CDR has a maximum input offset voltage of 10 mV at 25°C, while the TLC25L4ACDR variant is graded to 5 mV max. Both share identical pinout, package, and electrical behavior otherwise. The "A" suffix denotes tighter VIO screening - select TLC25L4ACDR only when sub-5-mV offset is required for DC-critical applications like precision weigh scales or calibrated reference buffers.
Is the TLC25L4CDR pin-compatible with the TLC27L4 series?
Yes, the TLC25L4CDR is pin-compatible with the TLC27L4CDR and TLC27L4IDR in the SOIC-14 (D) package. All share identical pin assignments, supply connections, and amplifier channel mapping. However, the TLC27L4 series exhibits higher input offset (15 mV max) and slightly different noise and bandwidth characteristics - verify loop stability and DC error budgets before substitution.
TLC25L4CDR 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:
- 0.6 pA
- Voltage - Input Offset:
- 1.1 mV
- 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
TLC25L4CDR FAQ
1.How can I place an order for TLC25L4CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC25L4CDR 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 TLC25L4CDR reliable?
The price and inventory of TLC25L4CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC25L4CDR is usually 5 days.
3.What payment methods are accepted for TLC25L4CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC25L4CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC25L4CDR?
TLC25L4CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC25L4CDR 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 TLC25L4CDR?
For technical support, including TLC25L4CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC25L4CDR requirements.
6.How does Aetrix verify that TLC25L4CDR is sourced from the original manufacturer or authorized distributors?
All TLC25L4CDR 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 TLC25L4CDR meets industry standards.
7.What is the process for return or replacement of TLC25L4CDR?
All TLC25L4CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC25L4CDR, 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 TLC25L4CDR part is unused and in its original packaging.
Return procedure for TLC25L4CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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