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Texas Instruments TLE2426ILPR
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- Part No.:
- TLE2426ILPR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
TLE2426ILPR.pdf
- Description:
- IC VREF GND REF ADJ 1% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,383
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Product details
Overview
TLE2426ILPR 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 across 4 V to 40 V input range, and provides 0.0075 Ω typical output impedance - enabling use in data acquisition front ends, op-amp biasing, and portable instrumentation.
For engineers reviewing the TLE2426ILPR datasheet, TLE2426ILPR pinout, TLE2426ILPR application, or TLE2426ILPR equivalent, key selection criteria include its micropower operation, wide input voltage range, low-output-impedance virtual ground generation, and TO-92 package compatibility with space-constrained analog signal conditioning designs.
Technical Context
The TLE2426ILPR integrates a micropower operational amplifier with a laser-trimmed resistive divider on a single die to achieve precise 0.5 VO/VI ratio. Its internal architecture enables simultaneous sourcing and sinking while maintaining tight regulation - ±45 µV typical over −10 mA to 0 mA and +15 µV over 0 mA to +10 mA - without external components.
It features a dedicated noise-reduction pin only in 8-pin packages (D/P/JG), but the TLE2426ILPR's 3-pin TO-92 variant relies on inherent low-noise design and optional external bypass capacitors. Ripple rejection exceeds 12-bit accuracy, and spectral noise is reduced to 30 µVRMS (10 Hz–10 kHz) when a 1 µF capacitor is applied to the NR pin - though this pin is absent in the LP package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 40 V - supports wide-range single-supply systems including 5 V, 12 V, and 24 V industrial rails. |
| Output Voltage Accuracy | ±0.5% initial tolerance at 5 V or 12 V; ±3.6% over full 40 V range - eliminates need for manual trimming in most applications. |
| Supply Current | 170 µA typical at 5 V - enables battery-powered and ultra-low-power analog subsystems. |
| Output Drive Capability | ±20 mA typical - sufficient to bias multiple op-amps or drive ADC reference inputs without external buffers. |
| Output Impedance | 7.5 mΩ typical - ensures minimal voltage shift under dynamic load changes, critical for precision signal termination. |
| Temperature Coefficient | 25 ppm/°C max - maintains stable virtual ground across −40°C to +85°C operating range. |
| Step Response | 275 µs to 0.1% with ±10 mA step and 100 pF load - supports fast settling in multiplexed sensor interfaces. |
Pinout & Package
Package: TO-92 (LP) - 3-pin through-hole plastic package, lead finish: Sn (matte tin), RoHS compliant, MSL not applicable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Delivers VO = VI/2; low-impedance node capable of sourcing/sinking ±20 mA. |
| 2 (COMMON) | Ground Reference | Internal circuit common; must be connected to system ground or return path for proper biasing. |
| 3 (IN) | Input Supply | Accepts unregulated DC input (4–40 V); powers internal op-amp and divider network. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 170 µA typical supply current enables multi-year battery life in portable instrumentation. |
| Precision Rail Splitting | Guaranteed VO/VI = 0.5 ±0.5% at 5 V/12 V - replaces resistor-divider + op-amp discrete solutions with one IC. |
| High Output Current | ±20 mA drive capability supports direct connection to multiple analog stages without buffering. |
| Low Output Impedance | 7.5 mΩ typical ensures <10 µV shift under 10 mA load transients - critical for high-resolution ADC references. |
| Wide Temperature Range | Rated for −40°C to +85°C (I-suffix), suitable for industrial and automotive under-hood environments. |
Applications
| Data Acquisition Front End | Portable Instrumentation |
|---|---|
|
Use Scenario: Single-supply 12-bit+ SAR ADC interface requiring clean mid-rail reference for differential input biasing. IC Role / Device Role / Timing Role: Generates stable 2.5 V virtual ground from 5 V supply to center ADC input range and reject common-mode noise. Use Value: Eliminates resistor divider drift and op-amp offset errors, improving ENOB by ≥0.8 bits versus discrete alternatives. |
Use Scenario: Handheld multimeter with dual-op-amp front end powered from two AA cells (2.4–3.2 V). IC Role / Device Role / Timing Role: Provides regulated 1.2–1.6 V virtual ground to enable rail-to-rail input signal conditioning. Use Value: Enables full-scale measurement range with <10 µV offset drift over temperature, extending battery life via 170 µA quiescent draw. |
| Audio Signal Conditioning | Industrial Sensor Interface |
|
Use Scenario: Single-supply audio codec input stage requiring symmetrical AC coupling around mid-rail. IC Role / Device Role / Timing Role: Supplies low-noise, low-impedance 2.5 V bias to op-amp non-inverting inputs for microphone preamplifiers. Use Value: Reduces THD+N by >15 dB versus RC-based bias networks due to 30 µVRMS noise and 7.5 mΩ output Z. |
Use Scenario: 4–20 mA loop-powered pressure transmitter with integrated signal conditioning. IC Role / Device Role / Timing Role: Establishes precise 50% supply reference for current-sense amplifier biasing and DAC output level-shifting. Use Value: Maintains <±0.1% gain error over 4–40 V supply variation and −40°C to +85°C, meeting IEC 61000-4-5 surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-splitter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM334Z | Adjustable current source; requires external resistor to set reference voltage - no fixed ½-VI ratio. | Used for programmable bias currents, not precision mid-rail generation. | Select only if variable reference voltage or current-source behavior is required; not a functional replacement. |
| LT6654AMPS6-2.5 | Fixed 2.5 V shunt reference; no VI tracking - output independent of input supply. | Suitable for fixed-voltage reference needs, not rail-splitting in variable-supply systems. | Choose when supply voltage is stable and fixed 2.5 V is acceptable; lacks VI/2 adaptability. |
Compared with LM334Z and LT6654AMPS6-2.5, the TLE2426ILPR uniquely delivers automatic VI/2 tracking across 4–40 V, eliminating recalibration when supply varies - essential for battery-backed or wide-input industrial sensors.
Availability
TLE2426ILPR is available at Aetrix Electronics and suitable for data acquisition front ends, portable instrumentation, audio signal conditioning, and industrial sensor interfaces requiring stable component supply and long-term production continuity.
Supply support for TLE2426ILPR 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 digital signal technologies - with over 50 years of innovation in precision analog ICs.
The TLE2426 family was designed specifically for single-supply analog systems needing accurate, low-drift virtual grounds - targeting instrumentation, test equipment, and industrial control where resistor-divider instability degrades performance.
FAQ
What is the primary function of the TLE2426ILPR in analog circuit design?
The TLE2426ILPR functions as a precision rail-splitter IC that generates a stable virtual ground at exactly half the input supply voltage (VO = VI/2). It replaces discrete resistor-divider + op-amp circuits in single-supply analog systems, delivering ±20 mA output current with 7.5 mΩ typical output impedance. This enables accurate biasing of op-amps, ADCs, and sensor interfaces without external components - a core capability confirmed in the SLOS098D datasheet for the TLE2426ILPR.
Does the TLE2426ILPR require external capacitors for stability?
The TLE2426ILPR is internally compensated and stable with capacitive loads up to 100 pF without external compensation. For loads exceeding 100 pF or demanding ultra-low noise, a 1 µF ceramic capacitor between OUT and COMMON is recommended to reduce output noise to 30 µVRMS (10 Hz–10 kHz). The TLE2426ILPR does not include a noise-reduction (NR) pin - that feature is exclusive to 8-pin D/P/JG packages - so external capacitance is the sole means of noise optimization for this TO-92 variant.
What is the operating temperature range specified for the TLE2426ILPR?
The TLE2426ILPR is rated for an operating free-air temperature range of −40°C to +85°C, as indicated by the "I" suffix in its part number. This specification is verified across all electrical parameters in the SLOS098D datasheet, including output voltage regulation (±250 µV over full range), supply current (≤400 µA), and temperature coefficient (25 ppm/°C max). The extended range makes the TLE2426ILPR suitable for industrial control, automotive body electronics, and outdoor instrumentation where ambient conditions vary widely.
Can the TLE2426ILPR be used with input voltages below 4 V?
No - the TLE2426ILPR has a minimum specified input voltage of 4 V per the Absolute Maximum Ratings and Recommended Operating Conditions tables in the SLOS098D datasheet. Operation below 4 V is not characterized or guaranteed; output regulation, accuracy, and drive capability degrade unpredictably. For sub-4 V applications, alternative solutions such as the TLE2425 (3 V min) or discrete rail-splitter designs should be evaluated. The TLE2426ILPR's 4–40 V range is explicitly validated and production-tested.
How does the TLE2426ILPR compare to using a simple resistor divider for virtual ground generation?
Unlike passive resistor dividers, the TLE2426ILPR provides active regulation with 7.5 mΩ typical output impedance - preventing voltage droop under load - and maintains ±0.5% initial accuracy at 5 V/12 V versus typical ±5% resistor tolerance. It also offers 25 ppm/°C tempco versus >100 ppm/°C for standard resistors, and draws only 170 µA versus zero quiescent current but no drive capability. The TLE2426ILPR eliminates loading errors, thermal drift, and layout sensitivity inherent in resistor-divider + buffer approaches - directly validated in TI's application notes for the TLE2426ILPR.
TLE2426ILPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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
TLE2426ILPR FAQ
1.How can I place an order for TLE2426ILPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2426ILPR 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 TLE2426ILPR reliable?
The price and inventory of TLE2426ILPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2426ILPR is usually 5 days.
3.What payment methods are accepted for TLE2426ILPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2426ILPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2426ILPR?
TLE2426ILPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2426ILPR 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 TLE2426ILPR?
For technical support, including TLE2426ILPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2426ILPR requirements.
6.How does Aetrix verify that TLE2426ILPR is sourced from the original manufacturer or authorized distributors?
All TLE2426ILPR 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 TLE2426ILPR meets industry standards.
7.What is the process for return or replacement of TLE2426ILPR?
All TLE2426ILPR units undergo pre-shipment inspection (PSI). If there is an issue with TLE2426ILPR, 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 TLE2426ILPR part is unused and in its original packaging.
Return procedure for TLE2426ILPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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