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Texas Instruments TLE2425ILP
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- Part No.:
- TLE2425ILP
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
TLE2425ILP.pdf
- Description:
- IC VREF GND REF 0.8% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:400
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Product details
Overview
TLE2425ILP from Texas Instruments is a precision 2.5-V virtual ground generator IC designed for single-supply 5-V analog signal-conditioning systems. It integrates a micropower voltage reference and high-performance op-amp in a 3-pin TO-92 package, delivering ±20 mA output current, 7.5 mΩ typical output impedance, and 20 ppm/°C temperature coefficient - enabling stable mid-rail biasing in data acquisition front ends requiring ≥12-bit accuracy.
For engineers reviewing the TLE2425ILP datasheet, TLE2425ILP pinout, TLE2425ILP application, or TLE2425ILP equivalent, this device serves as a drop-in replacement for resistor-divider + buffer solutions in ADC/DAC reference, sensor signal conditioning, and rail-splitting circuits where low noise (100 µV rms), tight regulation (±45 µV load change), and micropower operation (170 µA) are critical.
Technical Context
The TLE2425ILP implements a monolithic precision regulator architecture combining a bandgap-derived 2.5-V reference with a unity-gain buffered output stage. Its internal design achieves simultaneous high PSRR (80 dB at 120 Hz), ultra-low output impedance (7.5 mΩ), and fast transient response (115 µs to 0.1% for ±10 mA step).
It operates across −40°C to +85°C (I-suffix rating), supports input voltages from 4 V to 40 V, and maintains output regulation within ±250 µV over full temperature and load range - exceeding 12-bit system accuracy without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±20 mV (tight tolerance enables direct use as 12-bit ADC mid-rail reference) |
| Output Current | ±20 mA typ (supports driving multiple op-amp inputs or small loads without external buffering) |
| Output Impedance | 7.5 mΩ typ (minimizes signal ground shift under dynamic load, critical for high-SNR designs) |
| Bias Current | 170 µA typ (enables battery-powered or energy-constrained systems) |
| Input Regulation | 1.5 µV/V typ (rejects supply ripple; <25 µV change over 4.5–5.5 V input swing) |
| Load Regulation | ±45 µV typ (0 to ±10 mA), ±250 µV max (full range; ensures stability across varying sensor loads) |
| Temp Coefficient | 20 ppm/°C (≤±0.5 mV drift over −40°C to +85°C; suitable for industrial-grade signal chains) |
Pinout & Package
Package: TO-92 (LP), 3-pin through-hole, straight or formed leads, 5.34 mm max height. RoHS-compliant tin (Sn) lead finish, bulk packaging (1000 units).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (OUT) | Regulated 2.5-V output | Low-impedance virtual ground node; connects directly to analog ground planes or op-amp reference pins |
| Pin 2 (COMMON) | Ground reference terminal | Return path for internal reference and output stage; must be tied to system GND with minimal trace inductance |
| Pin 3 (IN) | Positive supply input | Accepts 4–40 V DC; decoupling capacitor (≥1 µF) required at pin for stability and ripple rejection |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reference + buffer | Eliminates 4–6 discrete components (resistors, caps, op-amp, ref) while improving accuracy and reducing board area |
| Micropower operation | 170 µA quiescent current enables >1-year battery life in portable data loggers using coin cells |
| High PSRR & low noise | 80 dB ripple rejection at 120 Hz and 100 µV rms wideband noise preserve SNR in sensitive sensor interfaces |
| Thermal stability | 20 ppm/°C tempco and ±250 µV full-range regulation ensure consistent performance across automotive and industrial ambient shifts |
| Robust short-circuit protection | ±50 mA short-circuit current capability allows safe operation during prototyping or fault conditions without external limiting |
Applications
| Instrumentation Amplifier Biasing | Single-Supply ADC Reference |
|---|---|
Use Scenario: Providing precise mid-rail bias to instrumentation amplifiers in isolated sensor front ends (e.g., strain gauge, thermocouple). IC Role / Device Role / Timing Role: Virtual ground generator establishing stable 2.5-V common-mode voltage for differential input stages. Use Value: Enables full-scale utilization of 5-V ADC input range while rejecting supply noise - improving effective resolution by ≥1.5 bits vs. RC divider solutions. | Use Scenario: Supplying reference and analog ground for 12-bit+ SAR ADCs in portable medical devices powered by single Li-ion cells. IC Role / Device Role / Timing Role: Precision rail-splitter generating clean 2.5-V reference and return path for ADC analog section. Use Value: Maintains ≤±0.5 LSB error over temperature and load, eliminating calibration drift in blood glucose meters and ECG front ends. |
| Sensor Signal Conditioning | Rail-Splitting for Op-Amp Circuits |
Use Scenario: Biasing bridge sensors and transimpedance amplifiers in industrial process control transmitters. IC Role / Device Role / Timing Role: Low-noise, low-drift virtual ground node referenced to system GND for AC-coupled signal paths. Use Value: Reduces total harmonic distortion by 12 dB and improves CMRR by 20 dB compared to passive dividers due to sub-10-mΩ output impedance. | Use Scenario: Generating symmetric ±2.5-V supplies from a single 5-V rail for dual-supply op-amps in audio preamplifiers or active filters. IC Role / Device Role / Timing Role: High-current rail-splitter supporting up to ±20 mA per rail with fast transient recovery. Use Value: Delivers stable split rails without large capacitors; eliminates need for dual-output DC/DC converters in space-constrained IoT edge nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar virtual ground generator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE2425CLP | Same architecture and pinout, but C-suffix (0°C to 70°C operating range); 2.5-V output tolerance ±20 mV identical | Restricted to commercial-temperature environments (e.g., consumer test equipment, lab instruments) | Select when cost sensitivity outweighs extended temperature requirements and industrial qualification is not needed |
| LM336Z-2.5 | 2.5-V shunt reference only (no buffer); requires external op-amp and resistors to achieve virtual ground functionality | Higher BOM count, larger PCB footprint, and degraded PSRR/noise performance due to discrete implementation | Choose only if legacy design reuse or extreme cost constraints prohibit integrated solutions |
Compared with TLE2425CLP and LM336Z-2.5, the TLE2425ILP delivers guaranteed −40°C to +85°C operation, integrated buffering, and lower system-level noise - making it the optimal choice for industrial sensor nodes and portable medical electronics where reliability and signal integrity are non-negotiable.
Availability
TLE2425ILP is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical diagnostics, and test-and-measurement equipment requiring stable component supply with long-term lifecycle support.
Supply support for TLE2425ILP 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 TLE2425 family was engineered specifically for high-accuracy single-supply analog systems - replacing error-prone resistor networks with monolithic, temperature-stable virtual ground generation for data acquisition, sensor signal chains, and mixed-signal interfacing.
FAQ
What is the maximum input voltage the TLE2425ILP can tolerate?
The TLE2425ILP supports continuous input voltages up to 40 V, as specified in its Absolute Maximum Ratings table. This allows robust operation in industrial 24-V systems or automotive environments with load-dump transients, provided power dissipation remains within the LP package's 496 mW limit at 25°C ambient.
Does the TLE2425ILP require an external capacitor on the output pin?
No, the TLE2425ILP is internally compensated and stable with no output capacitor required. However, a 100-pF ceramic capacitor is recommended at the output for improved high-frequency transient response - as demonstrated in Figure 13 of the datasheet showing 115-µs settling to 0.1% after ±10 mA current steps.
Can the TLE2425ILP sink and source current simultaneously?
No - the TLE2425ILP operates as a single-output virtual ground node: it sources current when the connected load pulls below 2.5 V, and sinks current when the load pulls above 2.5 V. Its ±20 mA capability applies independently to sourcing or sinking, not concurrently.
How does the TLE2425ILP compare to using a resistor divider with an op-amp buffer?
The TLE2425ILP replaces a discrete resistor divider + op-amp solution with superior performance: it delivers 20 ppm/°C tempco (vs. ≥100 ppm/°C for matched resistors), 7.5 mΩ output impedance (vs. ≥100 mΩ with typical buffers), and 170 µA quiescent current (vs. ≥1 mA for most op-amps), all in a single 3-pin TO-92 package.
Is the TLE2425ILP suitable for use with 16-bit ADCs?
Yes - the TLE2425ILP's ±250 µV full-range load and temperature regulation corresponds to <0.005% of 2.5 V, which is well within the ±0.0015% (≈1 LSB) requirement for 16-bit systems. Its 100 µV rms noise and 80 dB PSRR further ensure that quantization noise dominates over reference-induced errors.
TLE2425ILP 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:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.8%
- Temperature Coefficient:
- 20ppm/°C Typical
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 100µVrms
- Voltage - Input:
- 4V ~ 40V
- Current - Supply:
- -
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
TLE2425ILP FAQ
1.How can I place an order for TLE2425ILP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2425ILP 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 TLE2425ILP reliable?
The price and inventory of TLE2425ILP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2425ILP is usually 5 days.
3.What payment methods are accepted for TLE2425ILP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2425ILP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2425ILP?
TLE2425ILP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2425ILP 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 TLE2425ILP?
For technical support, including TLE2425ILP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2425ILP requirements.
6.How does Aetrix verify that TLE2425ILP is sourced from the original manufacturer or authorized distributors?
All TLE2425ILP 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 TLE2425ILP meets industry standards.
7.What is the process for return or replacement of TLE2425ILP?
All TLE2425ILP units undergo pre-shipment inspection (PSI). If there is an issue with TLE2425ILP, 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 TLE2425ILP part is unused and in its original packaging.
Return procedure for TLE2425ILP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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