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Texas Instruments TLE2426CLPR
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- Part No.:
- TLE2426CLPR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
TLE2426CLPR.pdf
- Description:
- IC VREF GND REF ADJ 1% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,370
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Product details
Overview
TLE2426CLPR 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 low 7.5 mΩ output impedance - enabling use in data acquisition front ends and op-amp biasing without external resistors or capacitors.
For engineers reviewing the TLE2426CLPR datasheet, TLE2426CLPR pinout, TLE2426CLPR application, or TLE2426CLPR equivalent, key selection criteria include its micropower operation, wide input voltage range, high sink/source capability, excellent line regulation (<±250 µV), and TO-92 (LP) package compatibility with space-constrained PCB layouts.
Technical Context
The TLE2426CLPR integrates a precision-trimmed resistor divider and a high-performance micropower op-amp on a single die, ensuring a fixed VO/VI ratio of 0.5 across temperature and load. Its architecture eliminates need for external passive components while maintaining stability under dynamic load steps.
It features internal compensation optimized for unity-gain stability with up to 100 pF load capacitance, and supports optional noise reduction via an external capacitor on the CNR pin - though this pin is absent in the 3-pin LP package. Output regulation remains within ±250 µV over ±10 mA sourcing/sinking current across full temperature range.
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 | ±0.2% at VI = 5 V (2.48–2.52 V); ±0.5% over full 4–40 V range - enables precise mid-rail referencing without calibration. |
| Supply Current | 170 µA typ at VI = 5 V - allows battery-powered or energy-sensitive applications like portable instrumentation. |
| Output Current Capability | ±20 mA typ - sufficient to drive multiple op-amp inputs or ADC reference buffers without external buffering. |
| Output Impedance | 7.5 mΩ typ - ensures minimal voltage shift under load, critical for high-precision signal termination. |
| Temperature Coefficient | 25 ppm/°C max - maintains <±1 mV drift over 0°C to 70°C, suitable for unregulated environments. |
| Ripple Rejection | >70 dB at 100 Hz (with 1 µF CNR capacitor) - suppresses power supply noise in sensitive analog signal chains. |
Pinout & Package
Package: TO-92 (LP) - 3-pin through-hole plastic package, lead-free (Sn), rated for 0°C to 70°C operation, compatible with standard axial lead handling and wave soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Delivers precision VI/2 voltage; low-impedance node capable of sourcing/sinking ±20 mA. |
| 2 (COMMON) | Ground Reference | Internal circuit common point; 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 amplifier and divider network. |
Key Features
| Feature | Design Value |
|---|---|
| Self-contained rail splitting | Eliminates need for matched resistor dividers, bypass caps, and op-amps - reduces BOM count and layout area by >70%. |
| Micropower operation | 170 µA typical supply current enables multi-year battery life in portable data loggers and sensor nodes. |
| High output drive | ±20 mA capability supports direct driving of multiple op-amp inputs or SAR ADC reference pins without buffer stages. |
| Low output impedance | 7.5 mΩ output resistance minimizes load-induced voltage error - critical for 16-bit+ data acquisition accuracy. |
| Wide input range | 4–40 V operation accommodates legacy 5 V, modern 12 V, and industrial 24 V/36 V supplies without redesign. |
Applications
| Data Acquisition Front End | Single-Supply Op-Amp Biasing |
|---|---|
|
Use Scenario: A 16-bit SAR ADC interfaces to bipolar sensors using a single 12 V rail. IC Role / Device Role / Timing Role: Provides precise 6.0 V virtual ground as analog input common and reference midpoint. Use Value: Enables true bipolar signal capture without dual supplies; maintains <±0.5 LSB offset error over temperature. |
Use Scenario: Rail-to-rail op-amps condition low-level thermocouple signals in a handheld meter. IC Role / Device Role / Timing Role: Supplies clean, low-noise mid-rail bias to op-amp inputs and output stage. Use Value: Prevents input/output clipping; achieves >100 dB CMRR by eliminating resistor-divider thermal mismatch. |
| Portable Instrumentation Power | Industrial Sensor Signal Conditioning |
|
Use Scenario: Battery-powered pH meter uses 2 × AA cells (2.4–3.2 V) for analog section. IC Role / Device Role / Timing Role: Generates 1.2–1.6 V stable reference from varying battery voltage. Use Value: Maintains consistent ADC reference point despite battery droop; extends usable runtime by 35% vs. Zener-based solutions. |
Use Scenario: 4–20 mA loop-powered transmitter conditions RTD signals before digitization. IC Role / Device Role / Timing Role: Establishes isolated mid-rail for differential amplifiers in galvanically separated analog domain. Use Value: Reduces common-mode error in isolation amplifier feedback networks; improves long-term gain stability by 5×. |
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 output voltage; no inherent VI/2 tracking. | Suitable only when fixed current bias is acceptable; cannot replicate TLE2426CLPR's automatic scaling with input voltage. | Select LM334Z only for constant-current biasing; not a functional substitute for rail-splitting. |
| LT6654AMPS6-2.5 | Precision 2.5 V shunt reference; fixed output; no input voltage scaling or current drive capability. | Requires separate regulator for VI/2 derivation; limited to ≤10 mA sink; no dynamic load support. | Choose LT6654AMPS6-2.5 only for ultra-low-drift 2.5 V references - not for variable-rail splitting. |
Compared with LM334Z and LT6654AMPS6-2.5, the TLE2426CLPR uniquely delivers automatic VI/2 tracking, ±20 mA drive, and micropower operation in a 3-pin TO-92 package - making it the only drop-in solution for compact, scalable single-supply analog biasing.
Availability
TLE2426CLPR is available at Aetrix Electronics and suitable for data acquisition front ends, portable instrumentation, single-supply op-amp biasing, and industrial sensor signal conditioning requiring stable component supply and long-term manufacturability.
Supply support for TLE2426CLPR 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 90 years of innovation in precision analog ICs.
The TLE2426 family was designed specifically for single-supply analog system designers needing reliable, integrated rail-splitting - replacing discrete resistor-op-amp solutions with guaranteed performance across voltage and temperature.
FAQ
What is the primary function of the TLE2426CLPR in analog circuit design?
The TLE2426CLPR functions as a precision rail splitter, generating a stable output voltage equal to exactly one-half the input supply voltage (VO = VI/2). This virtual ground enables bipolar signal handling in single-supply systems. Unlike resistor dividers, it maintains accuracy under load and across temperature - a core requirement in the TLE2426CLPR's design for data acquisition and sensor interfaces.
Does the TLE2426CLPR require external components to operate?
No, the TLE2426CLPR is fully self-contained and requires no external resistors, capacitors, or op-amps to generate VI/2. Its monolithic integration of a trimmed divider and micropower amplifier eliminates component count and layout complexity. While an optional 1 µF capacitor on the noise-reduction pin improves ripple rejection, the TLE2426CLPR operates correctly without it - unlike competing solutions that mandate external compensation.
What is the maximum load current the TLE2426CLPR can source or sink reliably?
The TLE2426CLPR delivers ±20 mA typical output current while maintaining regulation within ±250 µV. Absolute maximum ratings allow ±80 mA short-circuit current, but sustained operation above ±20 mA may exceed thermal limits in the TO-92 (LP) package. For continuous ±20 mA loads, the TLE2426CLPR remains stable with ≤100 pF capacitance - verified per datasheet Figure 17 stability curve.
Can the TLE2426CLPR be used with input voltages below 5 V?
Yes, the TLE2426CLPR operates down to 4 V input, supporting low-voltage applications such as 2-cell alkaline (2.4–3.2 V) or Li-ion (3.0–3.6 V) powered instruments. At VI = 4 V, output is 2.00 V ±0.02 V (±1%), with supply current dropping to ~150 µA. Performance remains specified across the full 4–40 V range - a key differentiator of the TLE2426CLPR versus fixed-output references.
How does the TLE2426CLPR handle input voltage ripple and noise?
The TLE2426CLPR provides >70 dB ripple rejection at 100 Hz when used with a 1 µF capacitor on the noise-reduction pin. Even without the capacitor (not available in LP package), its internal architecture achieves >55 dB rejection due to high PSRR of the integrated op-amp. Measured output noise is 30 µVrms (10 Hz–10 kHz) with CNR capacitor - critical for 16-bit ADC reference integrity in the TLE2426CLPR's target applications.
TLE2426CLPR 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
TLE2426CLPR FAQ
1.How can I place an order for TLE2426CLPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2426CLPR 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 TLE2426CLPR reliable?
The price and inventory of TLE2426CLPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2426CLPR is usually 5 days.
3.What payment methods are accepted for TLE2426CLPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2426CLPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2426CLPR?
TLE2426CLPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2426CLPR 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 TLE2426CLPR?
For technical support, including TLE2426CLPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2426CLPR requirements.
6.How does Aetrix verify that TLE2426CLPR is sourced from the original manufacturer or authorized distributors?
All TLE2426CLPR 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 TLE2426CLPR meets industry standards.
7.What is the process for return or replacement of TLE2426CLPR?
All TLE2426CLPR units undergo pre-shipment inspection (PSI). If there is an issue with TLE2426CLPR, 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 TLE2426CLPR part is unused and in its original packaging.
Return procedure for TLE2426CLPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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