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Texas Instruments TLE2426IDR
- Part No.:
- TLE2426IDR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2426IDR.pdf
- Description:
- IC VREF GND REF ADJ 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:15,714
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Product details
Overview
TLE2426IDR 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, draws only 170 µA typical supply current at 5 V, delivers ±20 mA output current, 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 TLE2426IDR datasheet, TLE2426IDR pinout, TLE2426IDR application, or TLE2426IDR equivalent, this page provides verified specifications, SOIC-8 package terminal mapping, noise-reduction pin functionality, thermal performance across −40°C to +85°C, and validated alternatives for rail-splitting in portable instrumentation and isolated sensor interfaces.
Technical Context
The TLE2426IDR 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 temperature drift. Its internal architecture supports simultaneous sourcing and sinking up to ±20 mA while maintaining sub-250 µV output regulation over full current range.
It features a dedicated Noise Reduction (NR) pin (Pin 8 in SOIC-8) 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-critical for high-resolution ADC reference splitting and low-noise signal conditioning.
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); ±0.3% over full 4–40 V range - eliminates need for external trimming in precision biasing. |
| Supply Current | 170 µA typ at VI = 5 V - enables battery-powered operation with minimal quiescent drain. |
| Output Drive 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 stable virtual ground under dynamic load transients in mixed-signal PCBs. |
| Temperature Range | −40°C to +85°C - qualified for automotive cabin electronics and industrial control environments. |
| Noise Reduction Support | CNR = 1 µF reduces output noise to 30 µVrms (10 Hz–10 kHz) - directly improves SNR in 16-bit+ data acquisition systems. |
Pinout & Package
Package: SOIC-8 (D package), surface-mount, RoHS-compliant, moisture sensitivity level (MSL) Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Low-impedance virtual ground node (VO = VI/2); drives loads up to ±20 mA. |
| 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 (GND) | Power Ground | Dedicated ground pin for internal circuitry; decoupling recommended near Pin 4. |
| 5 (NC) | No Connect | No internal connection; must be left floating or tied to GND per layout best practice. |
| 6 (NC) | No Connect | No internal connection; no routing required. |
| 7 (NC) | No Connect | No internal connection; no routing required. |
| 8 (NR) | Noise Reduction | Connects to external 1 µF capacitor to ground to suppress high-frequency noise and improve ripple rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Precision Rail Splitting | Guaranteed VO/VI = 0.5 ±0.2% at 5 V input - replaces resistor-divider + op-amp discrete solutions with one IC. |
| Micropower Operation | 170 µA typical supply current - extends battery life in portable test equipment and handheld sensors. |
| High Output Current | ±20 mA sourcing/sinking capability - drives multiple downstream analog stages without external buffer transistors. |
| Low Output Impedance | 7.5 mΩ typical - minimizes voltage droop during fast load transients in real-time signal chains. |
| Noise Reduction Pin | External 1 µF capacitor reduces output noise by >75% - enables clean reference generation for 16-bit SAR ADCs. |
Applications
| Portable Data Loggers | Isolated Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Battery-powered environmental monitoring unit with single 9 V supply powering dual-rail op-amps and 12-bit ADC. IC Role / Device Role / Timing Role: Generates stable 4.5 V virtual ground to bias op-amp inputs and ADC reference mid-point. Use Value: Eliminates need for split-rail power supply or precision resistor network, reducing BOM count and layout area by 40%. |
Use Scenario: Industrial pressure sensor with galvanically isolated analog front end using single 24 V supply. IC Role / Device Role / Timing Role: Provides low-noise, regulated midpoint reference for isolated instrumentation amplifier and anti-alias filter. Use Value: Maintains <±0.5 mV offset stability over temperature, enabling <0.1% FS measurement accuracy without calibration. |
| Audio Line Drivers | Medical ECG Front Ends |
|
Use Scenario: Single-supply headphone amplifier requiring symmetrical AC-coupled output swing around virtual ground. IC Role / Device Role / Timing Role: Supplies low-impedance, low-noise ½VI bias to op-amp output stage for rail-to-rail AC coupling. Use Value: Reduces THD+N by 12 dB vs. RC-based virtual ground due to 7.5 mΩ output impedance and 30 µVrms noise floor. |
Use Scenario: Low-power wearable ECG monitor with 3.3 V supply powering instrumentation amplifiers and 16-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Generates ultra-stable 1.65 V reference for ADC VREF and op-amp common-mode bias. Use Value: Achieves 86 dB SNR in clinical-grade measurements by suppressing supply ripple via NR pin and 12-bit+ ripple rejection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-splitting applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM334Z | Two-terminal current source; requires external resistor to set output voltage; no integrated op-amp or noise reduction pin. | Suitable only for fixed-current biasing; cannot source/sink symmetric load current or provide low-Z virtual ground. | Select when cost is primary constraint and ±1% output tolerance is acceptable; not recommended for precision ADC reference splitting. |
| LT6600-10 | Active filter with 10 MHz bandwidth and integrated 50 Ω driver; fixed 2.5 V output; no VI/2 tracking capability. | Designed for clock distribution and RF filtering-not for supply rail splitting or analog biasing. | Choose only for high-frequency signal conditioning where fixed 2.5 V reference and bandwidth outweigh rail-tracking requirement. |
Compared with LM334Z and LT6600-10, the TLE2426IDR uniquely delivers true VI/2 tracking, ±20 mA bidirectional drive, and noise-reduction support-making it the only drop-in solution for precision single-supply analog systems requiring dynamic, low-impedance virtual grounds.
Availability
TLE2426IDR is available at Aetrix Electronics and suitable for portable instrumentation, isolated sensor interfaces, and medical ECG front ends requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLE2426IDR 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 and embedded processing technologies, with decades of expertise in precision linear ICs and power management solutions.
The TLE2426IDR belongs to TI's precision rail-splitter product line, engineered specifically to replace discrete resistor-op-amp virtual ground circuits in space-constrained, low-power analog systems.
FAQ
What is the operating temperature range for the TLE2426IDR?
The TLE2426IDR is rated for operation from −40°C to +85°C, making it suitable for industrial control panels, automotive cabin electronics, and outdoor instrumentation where ambient temperatures fluctuate widely. This range is confirmed in the device's "recommended operating conditions" table and applies across the full 4 V to 40 V input voltage span.
Does the TLE2426IDR require external components to function?
The TLE2426IDR operates as a self-contained rail splitter with only three connections required: IN (Pin 3), COMMON (Pin 2), and OUT (Pin 1). However, connecting a 1 µF capacitor from the NR pin (Pin 8) to ground significantly improves noise performance and ripple rejection-this is optional but strongly recommended for high-precision applications such as 16-bit data acquisition.
Can the TLE2426IDR be used with input voltages below 4 V?
No-the absolute minimum input voltage for the TLE2426IDR is 4 V, as specified in both the "recommended operating conditions" and "absolute maximum ratings" sections of the datasheet. Operation below 4 V may result in undefined output behavior, loss of regulation, or failure to maintain the VO = VI/2 relationship. For lower-voltage systems, consider alternative rail splitters rated down to 2.7 V.
How does the noise reduction (NR) pin on the TLE2426IDR improve system performance?
The NR pin (Pin 8) allows connection of an external capacitor to reduce output noise and enhance ripple rejection. With CNR = 1 µF, output noise drops from 120 µVrms to 30 µVrms (10 Hz–10 kHz), and ripple rejection exceeds 12-bit accuracy-directly improving SNR in ADC-based systems and reducing error in precision op-amp biasing networks.
Is the TLE2426IDR pin-compatible with other variants like TLE2426CDR or TLE2426MDR?
Yes-the TLE2426IDR shares identical SOIC-8 (D package) pinout and footprint with all D-package variants (C, I, M suffixes), including TLE2426CDR and TLE2426MDR. Differences lie solely in temperature rating (I = −40°C to +85°C), initial accuracy, and long-term stability-not in pin assignment, electrical interface, or layout compatibility.
TLE2426IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLE2426IDR FAQ
1.How can I place an order for TLE2426IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2426IDR 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 TLE2426IDR reliable?
The price and inventory of TLE2426IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2426IDR is usually 5 days.
3.What payment methods are accepted for TLE2426IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2426IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2426IDR?
TLE2426IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2426IDR 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 TLE2426IDR?
For technical support, including TLE2426IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2426IDR requirements.
6.How does Aetrix verify that TLE2426IDR is sourced from the original manufacturer or authorized distributors?
All TLE2426IDR 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 TLE2426IDR meets industry standards.
7.What is the process for return or replacement of TLE2426IDR?
All TLE2426IDR units undergo pre-shipment inspection (PSI). If there is an issue with TLE2426IDR, 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 TLE2426IDR part is unused and in its original packaging.
Return procedure for TLE2426IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2426IDR Tags
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