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Texas Instruments TLE2426MD
- Part No.:
- TLE2426MD
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2426MD.pdf
- Description:
- IC VREF GND REF ADJ 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,028
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Product details
Overview
TLE2426MD 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, maintains 7.5 mΩ typical output impedance, and draws only 170 µA typical supply current at 5 V - enabling high-accuracy signal termination in data acquisition front ends and portable instrumentation.
For engineers reviewing the TLE2426MD datasheet, TLE2426MD pinout, TLE2426MD application, or TLE2426MD equivalent, this page provides verified electrical specifications, military-grade temperature performance (−55°C to +125°C), noise-reduction pin functionality, and real-world design context for analog ground synthesis in space-constrained, high-reliability systems.
Technical Context
The TLE2426MD integrates a micropower operational amplifier with a laser-trimmed resistive divider on a single die, ensuring precise VO/VI = 0.5 ratio independent of load or input voltage. Its architecture supports simultaneous sourcing and sinking up to ±20 mA while maintaining sub-250 µV output regulation over full temperature range.
It features a dedicated Noise Reduction (NR) pin (Pin 8 in SOIC-8 package) that, when bypassed with a 1 µF capacitor, reduces output noise from 120 µVrms to 30 µVrms and improves ripple rejection beyond 12-bit accuracy. The device exhibits 25 ppm/°C max temperature coefficient and 12 µs step response (VI = 0 → 12 V, VO to 0.1%) under CL = 100 pF.
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/12 V; ±3.6% over full 4–40 V range - enables direct use without external calibration. |
| Supply Current | 170 µA typ at 5 V (25°C); ≤350 µA over −55°C to +125°C - ideal for battery-powered and low-power analog subsystems. |
| Output Drive Capability | ±20 mA typ sink/source - sufficient to drive ADC reference inputs, op-amp bias networks, and small-signal transducers. |
| Output Impedance | 7.5 mΩ typ - ensures minimal voltage shift under dynamic load changes, critical for precision signal conditioning. |
| Temperature Range | −55°C to +125°C - qualified for aerospace, defense, and harsh-environment industrial applications. |
| Noise Reduction Pin | Pin 8 (NR) accepts 1 µF capacitor to reduce output noise by 75% (120 → 30 µVrms) and enhance line ripple rejection. |
Pinout & Package
Package: SOIC-8 (D package), RoHS-compliant, NIPDAU lead finish, MSL Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Positive Supply Input | Accepts 4–40 V unregulated input; powers internal op-amp and divider network. |
| 2 (OUT) | Virtual Ground Output | Delivers precisely VI/2; low-impedance node for analog signal referencing and biasing. |
| 3 (COMMON) | Ground Reference Terminal | System ground return path; must be connected to PCB ground plane for stability. |
| 4 (NC) | No Internal Connection | Unused pin; no internal bond - leave unconnected or tie to ground per layout best practice. |
| 5 (NC) | No Internal Connection | Unused pin; electrically isolated - no routing required. |
| 6 (NC) | No Internal Connection | Unused pin; no function - omit from netlist and footprint. |
| 7 (NC) | No Internal Connection | Unused pin; floating - avoid routing or stitching to prevent parasitic coupling. |
| 8 (NOISE REDUCTION) | Noise Filtering Control | Connect 1 µF ceramic capacitor to ground to suppress 10 Hz–10 kHz output noise and improve PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Precision Rail Splitting | Guaranteed VO/VI = 0.5 ±0.5% at 5 V/12 V - eliminates need for matched resistor dividers and buffer op-amps. |
| Military Temperature Rating | −55°C to +125°C operation with ≤25 ppm/°C tempco - validated for extended-life avionics and downhole tools. |
| Low-Impedance Output | 7.5 mΩ typical output impedance - prevents ground bounce in multi-channel ADC/DAC systems sharing virtual ground. |
| Noise Reduction Architecture | Dedicated NR pin (Pin 8) with 110 kΩ internal impedance - enables >75% RMS noise reduction via simple external capacitor. |
| Micropower Operation | 170 µA typical supply current - extends battery life in portable test equipment and remote sensor nodes. |
Applications
| Data Acquisition Front End | Analog Signal Termination |
|---|---|
|
Use Scenario: Single-supply 16-bit SAR ADC system powered from 12 V, requiring clean mid-rail reference for differential input stage. IC Role / Device Role / Timing Role: Generates stable 6.000 V virtual ground referenced to 12 V rail, serving as common-mode bias for ADC driver op-amp. Use Value: Eliminates resistor-divider drift and op-amp offset errors, improving effective resolution by ≥1.5 LSB over temperature. |
Use Scenario: Portable oscilloscope input stage using single 9 V battery, needing symmetrical ±4.5 V signal swing around virtual ground. IC Role / Device Role / Timing Role: Provides low-noise, low-impedance 4.5 V reference point for AC-coupled probe amplifiers and level-shifting circuits. Use Value: Enables full-scale signal swing without clipping; 30 µVrms noise with CNR ensures <1 LSB noise floor in 12-bit digitization. |
| Portable Instrumentation | Harsh-Environment Sensor Interface |
|
Use Scenario: Handheld multimeter with auto-ranging analog front end operating from 3×AA cells (4.5 V nominal), requiring accurate mid-supply reference. IC Role / Device Role / Timing Role: Delivers 2.25 V virtual ground with ±250 µV regulation over load and temperature - used for comparator thresholds and DAC reference. Use Value: Maintains measurement accuracy across battery discharge (4.0–4.8 V) without recalibration; 170 µA quiescent current extends runtime >20%. |
Use Scenario: Downhole pressure transducer module exposed to −40°C to +125°C ambient, powered from 24 V vehicle bus. IC Role / Device Role / Timing Role: Generates robust 12 V virtual ground for bridge amplifier biasing and instrumentation amp common-mode setting. Use Value: Military-grade TLE2426MD ensures <0.1% gain error drift over full temperature range, meeting API RP 14C integrity 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 resistors to set VI/2 - no integrated divider or low-Z output stage. | Lacks rail-splitting function out-of-box; needs op-amp buffer and precision resistors to match TLE2426MD's accuracy and drive. | Choose LM334Z only if programmable current bias is needed alongside virtual ground generation. |
| LT6654AMPS6-2.5 | Fixed 2.5 V shunt reference; no VI tracking - output is constant, not proportional to input supply. | Suitable only for fixed-voltage reference applications; cannot adapt to varying input rails like 5 V, 12 V, or 24 V systems. | Select LT6654AMPS6-2.5 when absolute 2.5 V stability is required, not VI/2 tracking. |
Compared with LM334Z and LT6654AMPS6-2.5, the TLE2426MD uniquely delivers true input-proportional rail splitting with integrated drive capability, eliminating external components and enabling compact, high-accuracy analog ground synthesis across variable supply voltages and extreme temperatures.
Availability
TLE2426MD is available at Aetrix Electronics and suitable for data acquisition front ends, portable instrumentation, and harsh-environment sensor interfaces requiring stable component supply with guaranteed −55°C to +125°C performance and long-term obsolescence management.
Supply support for TLE2426MD 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 decades of heritage in precision analog IC design.
The TLE2426MD belongs to TI's precision rail-splitter product line, engineered specifically for high-reliability analog ground synthesis in military, aerospace, and industrial systems where supply voltage varies and thermal stability is non-negotiable.
FAQ
What is the primary function of the TLE2426MD in an analog circuit?
The TLE2426MD functions as a precision rail splitter, generating a stable virtual ground at exactly half the input supply voltage (VO = VI/2). In the TLE2426MD, this is achieved via an integrated micropower op-amp and laser-trimmed divider, delivering ±0.5% accuracy at 5 V/12 V and supporting ±20 mA load current - making it ideal for biasing single-supply op-amps, ADCs, and sensor interfaces without external components.
Does the TLE2426MD require external components to operate?
The TLE2426MD operates as a self-contained 3-terminal device in basic configurations (IN, OUT, COMMON), needing no external resistors or capacitors for core rail-splitting functionality. However, the TLE2426MD's Noise Reduction (NR) pin (Pin 8) requires a 1 µF ceramic capacitor to ground to achieve its specified 30 µVrms output noise and enhanced ripple rejection - this is optional but strongly recommended for precision applications.
How does the TLE2426MD perform across its full military temperature range?
The TLE2426MD is fully characterized from −55°C to +125°C, with guaranteed parameters including ±250 µV output voltage regulation over load and temperature, ≤350 µA max supply current, and ≤25 ppm/°C temperature coefficient. Its SOIC-8 package and NIPDAU finish meet MIL-STD-883 requirements, ensuring reliable operation in avionics, downhole tools, and defense electronics where thermal cycling is severe.
Can the TLE2426MD replace discrete resistor-divider + op-amp solutions?
Yes - the TLE2426MD directly replaces discrete resistor-divider + op-amp virtual ground circuits. Unlike those solutions, the TLE2426MD integrates laser-trimmed precision, low output impedance (7.5 mΩ), and ±20 mA drive into one SOIC-8 package. This eliminates resistor matching errors, op-amp offset drift, and board space overhead - the TLE2426MD achieves better than 1% initial accuracy and superior thermal stability without external tuning.
What is the purpose of the NC pins on the TLE2426MD SOIC-8 package?
The TLE2426MD SOIC-8 package has five NC (No Connect) pins (Pins 4, 5, 6, 7, and Pin 1 in some variants - confirmed as unused in datasheet Figure 1). These pins have no internal connection and serve mechanical or legacy compatibility purposes. They must remain unconnected in the schematic and layout; tying them to ground or VCC may introduce parasitic coupling or violate TI's recommended usage, potentially degrading noise performance or stability of the TLE2426MD.
TLE2426MD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLE2426MD FAQ
1.How can I place an order for TLE2426MD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2426MD 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 TLE2426MD reliable?
The price and inventory of TLE2426MD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2426MD is usually 5 days.
3.What payment methods are accepted for TLE2426MD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2426MD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2426MD?
TLE2426MD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2426MD 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 TLE2426MD?
For technical support, including TLE2426MD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2426MD requirements.
6.How does Aetrix verify that TLE2426MD is sourced from the original manufacturer or authorized distributors?
All TLE2426MD 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 TLE2426MD meets industry standards.
7.What is the process for return or replacement of TLE2426MD?
All TLE2426MD units undergo pre-shipment inspection (PSI). If there is an issue with TLE2426MD, 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 TLE2426MD part is unused and in its original packaging.
Return procedure for TLE2426MD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2426MD Tags
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