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Texas Instruments TLE2426CDG4
- Part No.:
- TLE2426CDG4
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2426CDG4.pdf
- Description:
- IC VREF GND REF ADJ 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,248
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Product details
Overview
TLE2426CDG4 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 maintains low output impedance (7.5 mΩ typ) - enabling use in data acquisition front ends and op-amp biasing networks.
For engineers reviewing the TLE2426CDG4 datasheet, TLE2426CDG4 pinout, TLE2426CDG4 application, or TLE2426CDG4 equivalent, this page provides verified electrical specifications, SOIC-8 package terminal mapping, noise-reduction pin functionality, thermal performance across 0°C to 70°C, and validated alternatives for rail-splitting and precision mid-rail generation in space-constrained designs.
Technical Context
The TLE2426CDG4 integrates a micropower operational amplifier with a laser-trimmed resistive divider on a single die, ensuring a precise VO/VI ratio of 0.5 across its full 4 V–40 V input range. Its architecture supports simultaneous sourcing and sinking while maintaining regulation better than ±250 µV over load currents from −10 mA to +10 mA.
It features an optional noise-reduction (NR) pin (Pin 8 in SOIC-8), which-when bypassed with a 1 µF capacitor-reduces output RMS noise from 120 µV to 30 µV (10 Hz–10 kHz) and improves ripple rejection beyond 12-bit accuracy. The device exhibits 25 ppm/°C temperature coefficient and 20 µs step response (0.1%) with 100 pF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Accuracy | ±0.2% at VI = 5 V (2.48–2.52 V); ensures reliable mid-rail reference without external trimming |
| Supply Current | 170 µA typ at VI = 5 V; enables battery-powered or ultra-low-power analog signal conditioning |
| Input Voltage Range | 4 V to 40 V; supports wide-range industrial and automotive single-supply rails |
| Output Drive Capability | ±20 mA typ; sufficient to bias multiple op-amps or drive small-signal loads directly |
| Output Impedance | 7.5 mΩ typ at DC; minimizes voltage droop under dynamic load transients |
| Temperature Coefficient | 25 ppm/°C max (full range); guarantees <±0.5 mV drift over 0°C–70°C for stable biasing |
| Noise Reduction Support | NR pin (Pin 8) accepts 1 µF capacitor to cut RMS noise by 75% and improve line ripple rejection |
Pinout & Package
Package: SOIC-8 (D package), 8-pin surface-mount, RoHS-compliant, NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Provides regulated virtual ground at VI/2; low-impedance node capable of ±20 mA sourcing/sinking |
| 2 (COMMON) | Ground Reference | System ground connection point; establishes return path for internal divider and amplifier |
| 3 (IN) | Input Supply | Accepts unregulated DC input (4–40 V); powers internal op-amp and divider network |
| 4 (NC) | No Internal Connection | Unused pin; must be left floating or tied to GND per layout best practices |
| 5 (NC) | No Internal Connection | Unused pin; no internal bond; electrically isolated |
| 6 (NC) | No Internal Connection | Unused pin; no function; avoid routing signals nearby to prevent coupling |
| 7 (NC) | No Internal Connection | Unused pin; no internal connection; not bonded on die |
| 8 (NOISE REDUCTION) | Noise Filter Control | Connects to internal NR network; adding 1 µF capacitor reduces output noise and improves PSRR |
Key Features
| Feature | Design Value |
|---|---|
| Precision Rail Splitting | Guaranteed VO/VI = 0.5 ±0.2% at 5 V, enabling accurate single-supply op-amp biasing without resistor networks |
| Micropower Operation | 170 µA typical supply current allows integration into always-on sensor interfaces and portable instrumentation |
| Wide Input Range | 4 V–40 V operation supports legacy 5 V, 12 V, 24 V, and 36 V industrial rails without redesign |
| Noise Reduction Pin | Pin 8 enables 75% RMS noise reduction (to 30 µV) and >70 dB ripple rejection via simple 1 µF capacitor |
| High Output Current | ±20 mA capability eliminates need for external buffer stages in multi-op-amp configurations |
| Low Output Impedance | 7.5 mΩ output resistance ensures minimal voltage shift during fast load transients (e.g., ADC sampling bursts) |
Applications
| Data Acquisition Front End | Analog Signal Termination |
|---|---|
|
Use Scenario: Single-supply 12-bit+ SAR or delta-sigma ADC systems requiring clean mid-rail reference for differential input driving. IC Role / Device Role / Timing Role: Generates stable VI/2 reference for ADC common-mode input and op-amp driver biasing. Use Value: Eliminates resistor-divider drift and op-amp offset errors, improving effective resolution by ≥1 LSB across temperature. |
Use Scenario: Audio line drivers, sensor signal chains, or instrumentation amplifiers operating from 5 V or 12 V rails. IC Role / Device Role / Timing Role: Provides low-noise, low-impedance virtual ground for AC-coupled signal paths and bias networks. Use Value: Reduces THD+N by suppressing ground bounce and common-mode noise coupling in sensitive analog stages. |
| Portable Instrumentation | Industrial Sensor Interface |
|
Use Scenario: Handheld multimeters, portable oscilloscopes, or battery-powered data loggers with limited PCB area. IC Role / Device Role / Timing Role: Replaces discrete rail-splitter circuits (op-amp + resistors + caps) with one SOIC-8 IC. Use Value: Saves >75% board space and eliminates 4–6 passive components while improving long-term stability. |
Use Scenario: 4–20 mA loop-powered sensors, RTD bridges, or strain gauge amplifiers in factory automation. IC Role / Device Role / Timing Role: Supplies precise mid-rail bias to instrumentation amps and ADC references under varying supply conditions. Use Value: Maintains ±0.05% gain accuracy over 4–40 V input and −40°C to +85°C ambient (via I-grade variants). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-splitting applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM334Z | 2-terminal current source; requires external resistor to set VI/2 voltage; no integrated op-amp or noise reduction | Suitable only where adjustable current-based biasing is acceptable; lacks rail-splitter convenience and regulation | Select when cost sensitivity outweighs precision and ease-of-use; requires additional passives and calibration |
| LT6654AMPS6-2.5 | Fixed 2.5 V shunt reference; no VI tracking; requires external op-amp and resistors to achieve VI/2 functionality | Used in fixed-voltage reference roles; cannot adapt to varying input rails like TLE2426CDG4 | Choose only if system uses constant 5 V supply and needs ultra-low-drift (5 ppm/°C) over narrow temp range |
Compared with LM334Z and LT6654AMPS6-2.5, the TLE2426CDG4 uniquely delivers true VI/2 tracking, integrated buffering, ±20 mA drive, and noise reduction in a single SOIC-8 package - eliminating design compromises between accuracy, power, and board space.
Availability
TLE2426CDG4 is available at Aetrix Electronics and suitable for data acquisition systems, portable instrumentation, analog signal termination, and industrial sensor interfaces requiring stable component supply and long-lifecycle support.
Supply support for TLE2426CDG4 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 high-reliability components for industrial, automotive, and communications markets.
The TLE2426 family was designed specifically to replace bulky, drift-prone discrete rail-splitter circuits in single-supply analog signal chains - delivering precision, low power, and integration in standard packages.
FAQ
What is the primary function of the TLE2426CDG4?
The TLE2426CDG4 is a precision rail-splitter IC that generates a stable output voltage equal to exactly half the input supply voltage (VO = VI/2). It serves as a low-impedance virtual ground for single-supply analog circuits, eliminating the need for resistor dividers and op-amp buffers. Its design enables direct use in op-amp biasing, ADC reference networks, and audio signal termination - all within the TLE2426CDG4's specified 4 V–40 V input range and 0°C–70°C operating temperature.
Does the TLE2426CDG4 require external components to operate?
The TLE2426CDG4 functions as a complete rail-splitter with only three connections required: IN (Pin 3), COMMON (Pin 2), and OUT (Pin 1). However, for optimal noise performance, a 1 µF capacitor must be connected between Pin 8 (NOISE REDUCTION) and COMMON. No feedback or compensation components are needed - unlike discrete solutions - making the TLE2426CDG4 a true "3-terminal" solution despite its SOIC-8 package.
What is the maximum output current capability of the TLE2426CDG4?
The TLE2426CDG4 provides ±20 mA typical output current - meaning it can both source up to 20 mA and sink up to 20 mA from the OUT pin (Pin 1). This capability supports driving multiple op-amp inputs, biasing ADC references, or powering small auxiliary loads without external buffering. Absolute maximum ratings allow ±80 mA short-circuit current, but sustained operation above ±20 mA may exceed thermal limits depending on ambient conditions and PCB layout.
How does the noise-reduction pin (Pin 8) improve system performance?
Pin 8 of the TLE2426CDG4 connects to an internal noise-filter network. When a 1 µF ceramic capacitor is placed between Pin 8 and COMMON, RMS output noise drops from 120 µV to 30 µV (10 Hz–10 kHz), and power supply ripple rejection improves significantly - exceeding 12-bit effective accuracy. This feature directly enhances SNR in precision ADC front ends and reduces audible noise in audio line drivers - all without modifying the core rail-splitter functionality of the TLE2426CDG4.
Is the TLE2426CDG4 pin-compatible with other variants in the TLE2426 family?
Yes - all SOIC-8 variants (TLE2426CDG4, TLE2426IDG4, TLE2426MDG4) share identical pinouts and footprint. The suffix denotes temperature grade: 'C' = 0°C–70°C, 'I' = −40°C–85°C, 'M' = −55°C–125°C. Electrical parameters such as initial output tolerance and temperature coefficient are grade-specific, but the TLE2426CDG4's pin mapping, package dimensions, and functional interface remain fully consistent across the D-package family.
TLE2426CDG4 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLE2426CDG4 FAQ
1.How can I place an order for TLE2426CDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2426CDG4 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 TLE2426CDG4 reliable?
The price and inventory of TLE2426CDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2426CDG4 is usually 5 days.
3.What payment methods are accepted for TLE2426CDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2426CDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2426CDG4?
TLE2426CDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2426CDG4 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 TLE2426CDG4?
For technical support, including TLE2426CDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2426CDG4 requirements.
6.How does Aetrix verify that TLE2426CDG4 is sourced from the original manufacturer or authorized distributors?
All TLE2426CDG4 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 TLE2426CDG4 meets industry standards.
7.What is the process for return or replacement of TLE2426CDG4?
All TLE2426CDG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLE2426CDG4, 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 TLE2426CDG4 part is unused and in its original packaging.
Return procedure for TLE2426CDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2426CDG4 Tags
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TL431AIDBZR
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