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Texas Instruments TLE2426ILP
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- Part No.:
- TLE2426ILP
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
TLE2426ILP.pdf
- Description:
- IC VREF GND REF ADJ 1% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,402
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Product details
Overview
TLE2426ILP 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 operates across 4 V to 40 V input, delivers ±20 mA output current, exhibits 7.5 mΩ typical output impedance, and draws only 170 µA quiescent current at 5 V - enabling low-noise signal termination in data acquisition front ends and portable instrumentation.
For engineers reviewing the TLE2426ILP datasheet, TLE2426ILP pinout, TLE2426ILP application, or TLE2426ILP equivalent, this page provides verified electrical specifications, LP-package terminal mapping, real-world analog grounding use cases, and validated alternative options for split-rail biasing in space-constrained industrial and test equipment designs.
Technical Context
The TLE2426ILP integrates a micropower op-amp with a laser-trimmed resistive divider on a single die to achieve precise 0.5 VO/VI ratio without external components. Its architecture enables sourcing and sinking up to ±20 mA while maintaining sub-±250 µV load regulation over temperature.
Unlike discrete resistor-capacitor networks or op-amp-based splitters, the TLE2426ILP delivers factory-trimmed initial accuracy better than 1% at 5 V or 12 V, 25 ppm/°C temperature coefficient, and ripple rejection exceeding 12-bit-equivalent performance - all in a 3-pin TO-92 (LP) package with no noise-reduction pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 40 V - supports wide-range single supplies including 5 V, 12 V, and 24 V industrial rails. |
| Output Voltage Accuracy | ±0.2% at VI = 5 V (2.48–2.52 V); ±0.3% over full 4–40 V range - eliminates need for post-regulation trimming. |
| Supply Current | 170 µA typ at VI = 5 V - enables battery-powered operation with minimal impact on system power budget. |
| Output Impedance | 7.5 mΩ typ - ensures stable bias point under dynamic load transients in ADC reference and op-amp mid-rail applications. |
| Load Regulation | ±250 µV max over IO = ±10 mA - maintains <0.01% voltage shift during sensor signal swing or DAC output drive. |
| Temperature Range | −40°C to +85°C - qualified for industrial control, automotive body electronics, and field-deployable test gear. |
| Output Noise (10 Hz–10 kHz) | 30 µVrms with 1 µF CNR capacitor - meets low-noise requirements for 16-bit+ data acquisition front ends. |
Pinout & Package
Package: TO-92 (LP), 3-terminal plastic through-hole package with standard lead spacing and JEDEC-standard outline. Lead temperature rating: 300°C for 60 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output / Virtual Ground | Delivers VO = VI/2; sinks and sources up to ±20 mA; connects directly to analog ground plane or op-amp reference nodes. |
| 2 (COMMON) | Ground Reference | System ground return path; must be connected to PCB ground plane with low-inductance trace to minimize noise coupling. |
| 3 (IN) | Positive Supply Input | Accepts unregulated DC input (4–40 V); internal circuitry derives bias and reference from this rail without external decoupling required. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 170 µA typical supply current at 5 V - extends battery life in portable instrumentation and remote sensors. |
| Precision Rail Splitting | Factory-trimmed 0.5 VO/VI ratio with <1% initial error at 5 V/12 V - replaces 2-resistor + buffer designs with 3× board area reduction. |
| Low Output Impedance | 7.5 mΩ typical - sustains stable mid-rail voltage under fast transient loads (e.g., SAR ADC sampling bursts). |
| High Ripple Rejection | ≥70 dB @ 100 Hz (12-bit-equivalent) - suppresses switching regulator noise in mixed-signal systems. |
| Wide Temperature Stability | 25 ppm/°C tempco over −40°C to +85°C - ensures consistent bias point across industrial ambient conditions. |
Applications
| Data Acquisition Front End | Portable Instrumentation |
|---|---|
Use Scenario: Biasing differential input stages of 16-bit SAR ADCs powered from a single 12 V supply in environmental monitoring nodes. IC Role / Device Role / Timing Role: Provides clean, low-impedance mid-rail reference (6 V) for ADC common-mode input and op-amp driver stages. Use Value: Eliminates resistor-divider drift and op-amp offset errors, improving effective number of bits (ENOB) by ≥1.5 bits vs. discrete solutions. |
Use Scenario: Generating virtual ground for dual-supply op-amps in handheld multimeters powered by two AA cells (3 V total). IC Role / Device Role / Timing Role: Splits 3 V into precise 1.5 V reference while drawing only 170 µA - preserving battery runtime >200 hours. Use Value: Enables true bipolar signal handling (±1.5 V) without charge pumps or boost converters, reducing BOM count by 4 components. |
| Industrial Sensor Signal Conditioning | Test & Measurement Equipment |
Use Scenario: Biasing bridge amplifier outputs in strain-gauge interfaces within PLC I/O modules operating from 24 V DC rails. IC Role / Device Role / Timing Role: Supplies stable 12 V virtual ground to isolate sensor excitation and signal chain from noisy 24 V bus. Use Value: Reduces common-mode noise coupling by 40 dB compared to RC-based splitters, improving SNR by 6 dB in 24-bit ΣΔ ADCs. |
Use Scenario: Establishing mid-rail reference for oscilloscope vertical amplifier stages using ±15 V supplies derived from a single 30 V source. IC Role / Device Role / Timing Role: Generates low-noise 15 V virtual ground to enable symmetrical signal swing without dual isolated supplies. Use Value: Cuts power supply complexity and cost by 35%, while maintaining <0.005% THD+N in 100 MHz bandwidth amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-splitting applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM334Z | 2-terminal current source requiring external resistor network to generate VI/2; no integrated op-amp; 1% initial accuracy only with calibration. | Suitable only where adjustable current bias is needed; cannot source/sink >1 mA without external buffer; lacks low-Z output. | Select when ultra-low cost and minimal footprint are critical, and ±10 mA output capability is not required. |
| LT6654AMPS6-2.5 | Fixed 2.5 V shunt reference (not rail-splitting); requires external op-amp and resistors to achieve VI/2; higher quiescent current (350 µA). | Used in precision voltage reference chains, not dynamic rail splitting; unsuitable for variable VI or high-current sink/source. | Choose only if fixed 2.5 V reference suffices and VI is constant; avoid for true VI/2 tracking in variable-supply systems. |
Compared with LM334Z and LT6654AMPS6-2.5, the TLE2426ILP uniquely delivers true VI/2 tracking, ±20 mA drive, and micropower operation in a 3-pin TO-92 package - making it the only drop-in solution for space-limited, single-supply analog grounding where dynamic supply voltage and load current vary.
Availability
TLE2426ILP is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable test equipment, and data acquisition systems requiring stable component supply with guaranteed long-term continuity.
Supply support for TLE2426ILP 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 heritage in precision linear ICs and industrial-grade components.
The TLE2426 family was designed specifically to replace discrete rail-splitting networks in analog signal conditioning, delivering factory-trimmed accuracy, low noise, and robust thermal performance for harsh-environment applications.
FAQ
What is the primary function of the TLE2426ILP in analog circuit design?
The TLE2426ILP functions as a precision rail splitter, generating a stable virtual ground at exactly half the input supply voltage (VO = VI/2). It replaces resistor-divider-and-op-amp circuits in single-supply systems, providing low-impedance, low-noise, and temperature-stable biasing for ADCs, op-amps, and sensor interfaces - all within a compact TO-92 package. The TLE2426ILP achieves this without external components or calibration.
Can the TLE2426ILP operate from a 3.3 V supply?
No, the TLE2426ILP has a minimum input voltage specification of 4 V per its absolute maximum ratings and recommended operating conditions. At 3.3 V, the internal circuitry cannot bias correctly, resulting in undefined output behavior and potential failure to regulate. For 3.3 V systems, consider alternative rail-splitting methods or dedicated low-voltage references - the TLE2426ILP is not rated or characterized for operation below 4 V.
Does the TLE2426ILP require an external noise-reduction capacitor?
No - the TLE2426ILP in the LP (TO-92) package does not include a noise-reduction (CNR) pin, unlike the 8-pin D, P, or JG variants. Its noise performance (30 µVrms, 10 Hz–10 kHz) is achieved internally. Adding external capacitors to the OUT pin may destabilize the output; the datasheet specifies stability with CL ≤ 100 pF. Therefore, no CNR capacitor is used or supported with the TLE2426ILP.
How does the TLE2426ILP handle reverse polarity or negative input voltage?
The TLE2426ILP is not designed for reverse polarity or negative input voltage. Its absolute maximum rating for continuous input voltage is +40 V, with no specification for negative VI. Applying reverse polarity risks permanent damage due to lack of internal ESD or reverse-bias protection on the IN pin. Always ensure correct polarity and use input protection diodes if system-level fault conditions could expose the TLE2426ILP to negative transients.
Is the TLE2426ILP pin-compatible with other TLE2426 variants like TLE2426CP or TLE2426ID?
No - the TLE2426ILP uses a 3-pin TO-92 (LP) package with IN-COMMON-OUT pinout, while TLE2426CP (PDIP-8) and TLE2426ID (SOIC-8) are 8-pin packages with different pin assignments, including dedicated noise-reduction and NC pins. There is no pin-to-pin compatibility between LP and 8-pin variants. Board layout and footprint must be redesigned when substituting package types - the TLE2426ILP is mechanically and electrically distinct.
TLE2426ILP 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
TLE2426ILP FAQ
1.How can I place an order for TLE2426ILP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2426ILP 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 TLE2426ILP reliable?
The price and inventory of TLE2426ILP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2426ILP is usually 5 days.
3.What payment methods are accepted for TLE2426ILP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2426ILP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2426ILP?
TLE2426ILP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2426ILP 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 TLE2426ILP?
For technical support, including TLE2426ILP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2426ILP requirements.
6.How does Aetrix verify that TLE2426ILP is sourced from the original manufacturer or authorized distributors?
All TLE2426ILP 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 TLE2426ILP meets industry standards.
7.What is the process for return or replacement of TLE2426ILP?
All TLE2426ILP units undergo pre-shipment inspection (PSI). If there is an issue with TLE2426ILP, 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 TLE2426ILP part is unused and in its original packaging.
Return procedure for TLE2426ILP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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