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Texas Instruments TLE2426CLP
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- Part No.:
- TLE2426CLP
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
TLE2426CLP.pdf
- Description:
- IC VREF GND REF ADJ 1% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,556
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Product details
Overview
TLE2426CLP from Texas Instruments is a precision rail-splitter IC that generates a stable virtual ground at exactly half the input supply voltage (VO = VI/2) for single-supply analog systems. It delivers ±20 mA output current, draws only 170 µA typical supply current at 5 V, operates from 4 V to 40 V, and provides 7.5 mΩ typical output impedance - enabling robust signal termination in data acquisition front ends and portable instrumentation.
For engineers reviewing the TLE2426CLP datasheet, TLE2426CLP pinout, TLE2426CLP application, or TLE2426CLP equivalent, this page delivers verified specifications, LP-package terminal mapping, real-world use cases in single-supply op-amp biasing and ADC reference splitting, and validated alternative options with documented functional trade-offs.
Technical Context
The TLE2426CLP integrates a micropower operational amplifier with a laser-trimmed resistive divider on a single die to achieve precise VO/VI = 0.5 ratio across temperature and load. Its architecture enables sourcing and sinking up to ±20 mA while maintaining sub-±250 µV output regulation over full load range and ±10 ppm/°C temperature coefficient.
Noise reduction is supported via an external capacitor on the NR pin in D/P/JG packages - but the LP package is a 3-terminal variant without NR functionality. The device exhibits 12-bit-equivalent ripple rejection and <30 µVrms output noise when CNR = 1 µF, making it suitable for high-resolution analog signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Ratio | VO = VI / 2 ±0.5% initial tolerance at 5 V/12 V; maintains exact halving across 4–40 V input range |
| Supply Current | 170 µA typ at VI = 5 V; enables battery-powered operation with minimal quiescent drain |
| Output Drive | ±20 mA typ sourcing/sinking capability; supports driving multiple op-amp bias points or small loads directly |
| Output Impedance | 7.5 mΩ typ; ensures low-voltage drop under load and stable reference for precision ADCs/DACs |
| Temp Coefficient | 25 ppm/°C max (C-suffix); guarantees ≤±0.5 mV drift over 0°C to 70°C operating range |
| Ripple Rejection | >70 dB at 100 Hz; suppresses supply noise to preserve SNR in sensitive analog stages |
| Step Response | 275 µs to 0.1% for ±10 mA load step (CL = 100 pF); enables fast settling in dynamic signal paths |
Pinout & Package
Package: TO-92 (LP) - 3-pin through-hole plastic package, lead finish: Sn, rated for 0°C to 70°C (C-suffix), JEDEC TO-226AA compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Provides precision VI/2 virtual ground; low-impedance node capable of sourcing/sinking ±20 mA |
| 2 (COMMON) | Ground Reference | System ground connection point; forms return path for internal divider and output stage |
| 3 (IN) | Input Supply | Accepts unregulated DC input from 4 V to 40 V; powers internal amplifier and divider network |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 170 µA typical supply current enables multi-year battery life in portable instrumentation |
| Wide Input Range | 4 V to 40 V operation supports diverse supplies - from Li-ion (3.7 V nominal) to industrial 24 V rails |
| Precision Output Regulation | ±250 µV max regulation error over ±10 mA load ensures stable bias for 12-bit+ ADCs |
| Low Output Impedance | 7.5 mΩ typical output impedance prevents loading-induced offset in multi-stage analog circuits |
| High Ripple Rejection | 70+ dB suppression at 100 Hz eliminates need for additional LC filtering in noisy environments |
Applications
| Portable Data Loggers | Single-Supply Op-Amp Biasing |
|---|---|
Use Scenario: Battery-powered environmental sensor nodes acquiring thermocouple or strain gauge signals using single-supply ADCs. IC Role / Device Role / Timing Role: Provides stable VI/2 reference for ADC input common-mode and op-amp bias networks. Use Value: Eliminates need for matched resistor dividers and buffer op-amps, reducing BOM count by 4 components and PCB area by >25 mm². |
Use Scenario: Rail-to-rail op-amp circuits powered from +5 V or +12 V supplies requiring symmetrical input/output swing. IC Role / Device Role / Timing Role: Generates true mid-rail virtual ground to enable bipolar signal handling without dual supplies. Use Value: Enables ±2.5 V or ±6 V signal swing from single 5 V/12 V rail, preserving dynamic range without supply duplication. |
| Medical Instrumentation Front Ends | Industrial Sensor Signal Conditioning |
Use Scenario: ECG/EEG amplifiers where low-noise, low-drift reference is critical for microvolt-level biopotential measurements. IC Role / Device Role / Timing Role: Supplies ultra-stable, low-impedance common-mode voltage for instrumentation amplifier reference pins. Use Value: Reduces common-mode error contribution to <0.01% of full-scale, improving effective resolution by ≥1 LSB in 16-bit systems. |
Use Scenario: 4–20 mA loop-powered transmitters conditioning RTD or pressure sensor outputs before DAC conversion. IC Role / Device Role / Timing Role: Establishes precise mid-point reference for differential ADC inputs and analog output buffers. Use Value: Maintains linearity over full 4–40 V loop supply range, eliminating calibration drift caused by resistor-divider thermal mismatch. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-splitting applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM334Z | Adjustable current source; requires external resistors to set VI/2; no integrated amplifier or low-Z output | Suitable only for low-current biasing (<1 mA); cannot drive ADC references or op-amp inputs directly | Select when ultra-low cost and minimal quiescent current (<1 µA) outweigh need for precision and drive strength |
| TLE2426CP | Same core rail-splitter function but in 8-pin PDIP package with Noise Reduction (NR) pin; wider temp range available (−40°C to 85°C) | Enables 1 µF CNR capacitor for 30 µVrms noise; preferred for high-precision lab equipment with AC-coupled supplies | Choose when noise performance and extended temperature range justify larger footprint and higher cost |
Compared with LM334Z and TLE2426CP, the TLE2426CLP offers optimal balance of precision, drive capability, and compact TO-92 packaging for cost-sensitive, space-constrained embedded analog designs - delivering full rail-splitter functionality without external components or layout overhead.
Availability
TLE2426CLP is available at Aetrix Electronics and suitable for portable instrumentation, single-supply op-amp biasing, and industrial sensor signal conditioning requiring stable component supply and long-term manufacturability.
Supply support for TLE2426CLP 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 analog IC design and high-volume manufacturing.
The TLE2426 family was engineered specifically for single-supply analog system designers needing a drop-in, self-contained rail-splitter - eliminating discrete resistor networks and op-amp buffers while guaranteeing accuracy, stability, and ease of use.
FAQ
What is the primary function of the TLE2426CLP?
The TLE2426CLP is a precision rail-splitter IC that generates a stable virtual ground at exactly half the input supply voltage (VO = VI/2). It serves as a low-impedance, high-accuracy reference for single-supply analog circuits - replacing resistor dividers and op-amp buffers in applications like ADC biasing, op-amp mid-rail generation, and sensor signal conditioning. Its design eliminates layout sensitivity and thermal drift inherent in passive solutions.
Does the TLE2426CLP support noise reduction via an external capacitor?
No, the TLE2426CLP does not support noise reduction via an external capacitor. The NR (Noise Reduction) pin is only available in the 8-pin D, P, and JG packages - not in the 3-pin LP (TO-92) package used by the TLE2426CLP. Therefore, the TLE2426CLP delivers its specified 120 µVrms output noise (CNR = 0) without external filtering, and cannot be enhanced with a CNR capacitor like the TLE2426CP or TLE2426CD variants.
What is the maximum input voltage rating for the TLE2426CLP?
The TLE2426CLP has an absolute maximum continuous input voltage rating of 40 V, as specified in the TI SLOS098D datasheet. It is designed to operate reliably across a recommended input range of 4 V to 40 V. Exceeding 40 V may cause permanent damage. For systems with transient overvoltage risk, external clamping (e.g., TVS diode) is recommended upstream of the TLE2426CLP input pin.
Can the TLE2426CLP drive a 10 kΩ load while maintaining accuracy?
Yes, the TLE2426CLP can drive a 10 kΩ load with negligible impact on accuracy. At IO = ±0.25 mA (corresponding to 10 kΩ at 2.5 V), output voltage regulation is well within ±10 µV - far below its ±250 µV full-range specification. Its 7.5 mΩ typical output impedance ensures voltage error remains below 2.5 µV under this load, preserving precision for high-impedance ADC references and op-amp bias nodes.
Is the TLE2426CLP RoHS-compliant and lead-free?
Yes, the TLE2426CLP is RoHS-compliant and features a lead-free Sn (tin) lead finish, as confirmed in TI's official Packaging Information addendum. It meets EU Directive 2011/65/EU requirements and is suitable for environmentally regulated industrial and medical applications. No exemptions apply, and the device is fully compatible with standard Pb-free reflow profiles.
TLE2426CLP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Ground Reference (Virtual)
- Output Type:
- Adjustable
- Voltage - Output (Min/Fixed):
- 2V
- Voltage - Output (Max):
- 20 V
- Current - Output:
- 20 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 35ppm/°C Typical
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 120µVrms
- Voltage - Input:
- 4V ~ 40V
- Current - Supply:
- 400µA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
TLE2426CLP FAQ
1.How can I place an order for TLE2426CLP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2426CLP 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 TLE2426CLP reliable?
The price and inventory of TLE2426CLP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2426CLP is usually 5 days.
3.What payment methods are accepted for TLE2426CLP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2426CLP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2426CLP?
TLE2426CLP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2426CLP 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 TLE2426CLP?
For technical support, including TLE2426CLP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2426CLP requirements.
6.How does Aetrix verify that TLE2426CLP is sourced from the original manufacturer or authorized distributors?
All TLE2426CLP 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 TLE2426CLP meets industry standards.
7.What is the process for return or replacement of TLE2426CLP?
All TLE2426CLP units undergo pre-shipment inspection (PSI). If there is an issue with TLE2426CLP, 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 TLE2426CLP part is unused and in its original packaging.
Return procedure for TLE2426CLP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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