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Texas Instruments TLE2425IDG4
- Part No.:
- TLE2425IDG4
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2425IDG4.pdf
- Description:
- IC VREF GND REF 0.8% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,696
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Product details
Overview
TLE2425IDG4 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 an 8-pin SOIC package, delivering ±20 mA output current, 7.5 mΩ typical output impedance, and 170 µA quiescent current. It enables accurate ADC/DAC interfacing and improves dynamic range in data acquisition front ends.
For engineers reviewing the TLE2425IDG4 datasheet, TLE2425IDG4 pinout, TLE2425IDG4 application, or TLE2425IDG4 equivalent, key selection criteria include output regulation stability over temperature (±250 µV full-range), input voltage regulation (≤75 µV/V), low-noise operation (100 µV rms), and compatibility with 0–8 mA load currents in industrial-grade −40°C to +85°C environments.
Technical Context
The TLE2425IDG4 implements a monolithic precision voltage reference buffered by a rail-to-rail output operational amplifier, enabling true mid-rail generation without external components. Its architecture achieves 12-bit+ accuracy in load and line regulation, with output voltage hysteresis <4 mV across temperature and long-term drift of only 15 ppm/1000 h.
It operates from 4 V to 40 V input, supports sink/source loads up to ±20 mA, and maintains stable performance with capacitive loads up to 100 pF. The device features 80 dB ripple rejection at 120 Hz and delivers fast transient response: 115 µs to 0.1% for ±10 mA current steps with 100 pF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±20 mV (tight tolerance enables 12-bit system accuracy without trimming) |
| Output Impedance | 7.5 mΩ typical (ensures minimal signal ground shift under dynamic load) |
| Quiescent Current | 170 µA typical (supports battery-powered or energy-sensitive analog subsystems) |
| Load Regulation | ±250 µV max over IO = 0 to ±8 mA (maintains reference integrity across sensor/ADC drive conditions) |
| Input Regulation | ≤75 µV/V (rejects supply ripple and variation in unregulated 5-V rails) |
| Operating Temp Range | −40°C to +85°C (qualified for industrial ambient environments) |
| Output Noise | 100 µV rms (10 Hz–10 kHz; preserves SNR in precision measurement paths) |
Pinout & Package
Package: SOIC-8 (D package), 3.91 mm × 4.90 mm, 1.75 mm max height, RoHS-compliant NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output terminal | Delivers regulated 2.5-V virtual ground; drives ±20 mA; low-impedance node for analog signal return |
| 2 (COMMON) | Reference ground | Internal connection point for reference circuitry; must be tied to system analog ground plane |
| 3 (IN) | Power input | Accepts 4 V to 40 V supply; powers internal reference and output stage |
| 4–8 | No internal connection | NC pins; electrically isolated-no routing or grounding required |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 170 µA typical supply current enables always-on biasing in portable instrumentation |
| High-output-current capability | ±20 mA sourcing/sinking supports driving multiple op-amps or ADC reference inputs simultaneously |
| Low-output-impedance buffer | 7.5 mΩ typical output impedance minimizes ground bounce in multi-channel data acquisition |
| 12-bit regulation accuracy | Load and line regulation exceed 12-bit resolution on 5-V systems, reducing calibration overhead |
| Integrated macromodel support | SPICE-compatible behavioral model included for accurate pre-layout simulation of settling and noise |
Applications
| Industrial Data Acquisition | Portable Instrumentation |
|---|---|
Use Scenario: Front-end signal conditioning for 12-bit+ SAR ADCs in PLC analog input modules. IC Role / Device Role / Timing Role: Provides stable 2.5-V reference and low-impedance analog ground for differential sensor amplifiers and ADC drivers. Use Value: Eliminates resistor-divider drift and op-amp offset errors, improving system gain accuracy and reducing calibration frequency. | Use Scenario: Battery-powered handheld multimeter with dual-slope or sigma-delta ADC. IC Role / Device Role / Timing Role: Generates precise mid-rail for op-amp-based AC-coupled input stages and reference buffers. Use Value: Enables rail-to-rail input signal swing while maintaining 100 µV rms noise floor and 170 µA quiescent draw. |
| Medical Sensor Interfaces | Automotive Body Control Modules |
Use Scenario: ECG front-end with instrumentation amplifiers and anti-aliasing filters. IC Role / Device Role / Timing Role: Supplies clean, low-noise virtual ground for biopotential signal chain biasing and common-mode rejection. Use Value: Reduces 50/60 Hz interference coupling and improves CMRR by stabilizing reference node impedance below 10 mΩ. | Use Scenario: Analog sensor monitoring (temperature, pressure) in 5-V automotive sub-systems. IC Role / Device Role / Timing Role: Establishes robust 2.5-V reference for ratiometric sensor excitation and ADC reference in noisy 12-V derived rails. Use Value: Maintains accuracy despite engine-bay thermal cycling (−40°C to +85°C) and supply ripple up to 40 V transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar virtual ground generator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF200AIDR | 200-µA current source with 2.5-V reference; no integrated buffer; requires external op-amp for virtual ground | Suitable only when design already includes a precision op-amp; adds layout complexity and noise sources | Select if existing design uses REF200A and needs current-source flexibility; not drop-in for TLE2425IDG4's buffered output |
| LM336Z-2.5/NOPB | 2.5-V shunt reference; 10 mA max current; no output drive capability; requires series resistor and external buffer | Requires discrete buffering and biasing; higher component count and thermal drift vs. monolithic solution | Choose only for cost-sensitive, low-current (<1 mA) applications where buffer performance is secondary |
Compared with REF200AIDR and LM336Z-2.5/NOPB, the TLE2425IDG4 delivers integrated buffering, lower output impedance, and guaranteed ±20 mA drive-reducing BOM count, PCB area, and system-level error sources in precision analog designs.
Availability
TLE2425IDG4 is available at Aetrix Electronics and suitable for industrial data acquisition, portable instrumentation, and medical sensor interface applications requiring stable component supply and long-term lifecycle continuity.
Supply support for TLE2425IDG4 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 power management technologies with over 90 years of innovation in precision analog ICs.
The TLE2425 family was engineered specifically for high-accuracy virtual ground generation in single-supply analog systems-targeting data acquisition, sensor signal chains, and mixed-signal interfaces where reference stability and low noise are critical.
FAQ
What is the primary function of the TLE2425IDG4 in analog circuit design?
The TLE2425IDG4 functions as a precision 2.5-V virtual ground generator, providing a stable, low-impedance mid-rail reference for single-supply 5-V analog systems. It replaces passive resistor dividers and discrete op-amp buffers, delivering ±20 mA drive capability and 7.5 mΩ output impedance-key for maintaining signal integrity in ADC/DAC interfaces and instrumentation amplifiers. Its integration eliminates trimming and improves long-term stability versus discrete solutions.
Does the TLE2425IDG4 require external components to operate?
No, the TLE2425IDG4 operates as a fully self-contained virtual ground generator with no external components required for basic functionality. It only needs connections to IN (4–40 V supply), COMMON (system analog ground), and OUT (2.5-V output). While optional 100-pF bypass capacitors improve transient response, they are not mandatory per datasheet recommendations. The TLE2425IDG4 integrates both precision reference and output buffer on one die, eliminating resistors, op-amps, and references needed in traditional implementations.
What is the maximum output current capability of the TLE2425IDG4, and how does it vary with temperature?
The TLE2425IDG4 supports ±20 mA continuous output current at 25°C, with short-circuit output current rated at ±30 mA (sink) and ±50 mA (source) at 25°C. Over its full operating range (−40°C to +85°C), output current capability degrades gradually: typical sink current drops to ~45 mA at 125°C, and source current to ~−40 mA. Load regulation remains within ±250 µV up to ±8 mA across the full temperature range, ensuring consistent performance in industrial environments.
How does the TLE2425IDG4 compare to standard voltage references like the TL431 in virtual ground applications?
Unlike the TL431-a programmable shunt regulator requiring external resistors and an op-amp buffer-the TLE2425IDG4 is a purpose-built virtual ground IC with integrated precision reference and unity-gain buffer. It delivers 7.5 mΩ output impedance versus TL431's >1 Ω (with external buffer), 170 µA quiescent current versus ~1 mA for buffered TL431, and guaranteed ±20 mA drive without loop compensation. The TLE2425IDG4 also offers superior load regulation (±250 µV) and lower noise (100 µV rms), making it optimal for high-fidelity signal chains where TL431-based solutions introduce drift and instability.
Is the TLE2425IDG4 pin-compatible with other variants in the TLE2425 family, such as TLE2425CD or TLE2425MD?
Yes, the TLE2425IDG4 is pin-compatible with all SOIC-8 variants in the TLE2425 family-including TLE2425CD (0°C to 70°C), TLE2425ID (−40°C to 85°C), and TLE2425MD (−55°C to 125°C)-as they share identical D-package pinout, footprint, and terminal assignments (Pins 1–3 active, Pins 4–8 NC). The "G4" suffix denotes TI's green packaging standard (lead-free, RoHS-compliant NIPDAU finish) but does not affect electrical or mechanical compatibility. Designs qualified with TLE2425IDG4 can substitute other D-package variants without layout changes, provided temperature and reliability requirements align.
TLE2425IDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLE2425IDG4 FAQ
1.How can I place an order for TLE2425IDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2425IDG4 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 TLE2425IDG4 reliable?
The price and inventory of TLE2425IDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2425IDG4 is usually 5 days.
3.What payment methods are accepted for TLE2425IDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2425IDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2425IDG4?
TLE2425IDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2425IDG4 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 TLE2425IDG4?
For technical support, including TLE2425IDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2425IDG4 requirements.
6.How does Aetrix verify that TLE2425IDG4 is sourced from the original manufacturer or authorized distributors?
All TLE2425IDG4 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 TLE2425IDG4 meets industry standards.
7.What is the process for return or replacement of TLE2425IDG4?
All TLE2425IDG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLE2425IDG4, 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 TLE2425IDG4 part is unused and in its original packaging.
Return procedure for TLE2425IDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2425IDG4 Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
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AN431AN-ATRG1
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LM4040CYM3-2.5-TR
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LM4040CYM3-4.1-TR
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
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LM4040D20IDBZR
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LM4041DIM3-ADJ/NOPB
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
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AZ431LANTR-G1
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