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Texas Instruments TLE2426CDR
- Part No.:
- TLE2426CDR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2426CDR.pdf
- Description:
- IC VREF GND REF ADJ 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,455
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Product details
Overview
TLE2426CDR 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, maintains 0.0075 Ω typical output impedance, and operates across 4 V to 40 V input range - enabling use in battery-powered data acquisition front ends and portable instrumentation.
For engineers reviewing the TLE2426CDR datasheet, TLE2426CDR pinout, TLE2426CDR application, or TLE2426CDR equivalent, this page provides verified specifications, SOIC-8 package terminal mapping, noise-reduction pin implementation guidance, and validated alternatives for rail-splitting in precision analog signal termination, op-amp biasing, and ADC reference design.
Technical Context
The TLE2426CDR integrates a micropower operational amplifier with a laser-trimmed resistive divider on a single die, achieving a precise VO/VI ratio of 0.5 across temperature and load. Its architecture enables simultaneous sourcing and sinking while maintaining low output impedance and high line regulation.
It features a dedicated Noise Reduction (NR) pin (Pin 8) in the SOIC-8 package, which-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 is not a regulator but a buffered, actively stabilized midpoint reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 40 V - supports wide-range single supplies including 5 V, 12 V, and 24 V industrial rails. |
| Output Voltage Accuracy | ±0.02 V at VI = 5 V (2.48–2.52 V); ±0.2 V over full 4–40 V range - enables <1% initial error in 5 V/12 V systems. |
| Supply Current | 170 µA typ at VI = 5 V - enables micropower operation in battery-backed or energy-constrained designs. |
| Output Drive Capability | ±20 mA typ - sufficient to bias multiple op-amps or drive small-signal loads without external buffering. |
| Output Impedance | 7.5 mΩ typ - ensures minimal voltage shift under dynamic load transients in precision signal chains. |
| Output Noise (10 Hz–10 kHz) | 30 µVrms with CNR = 1 µF - meets low-noise requirements for 16-bit+ data acquisition front ends. |
| Ripple Rejection | >70 dB up to 10 kHz - suppresses switching noise from DC/DC converters feeding analog circuitry. |
Pinout & Package
Package: SOIC-8 (D package), surface-mount, 8-pin plastic small-outline integrated circuit per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Low-impedance virtual ground node (VO = VI/2); drives ±20 mA with sub-10 mΩ impedance. |
| 2 (COMMON) | Reference Ground | Internal connection point for internal divider; must be connected to system ground or return path. |
| 3 (IN) | Input Supply | Accepts unregulated DC input (4–40 V); powers internal op-amp and divider network. |
| 4 (GND) | Power Ground | Device substrate and op-amp power return; ties to system ground plane for noise control. |
| 5 (NC) | No Connect | No internal connection; left floating or tied to GND per layout best practices. |
| 6 (NC) | No Connect | No internal connection; left floating or tied to GND. |
| 7 (NC) | No Connect | No internal connection; left floating or tied to GND. |
| 8 (NR) | Noise Reduction | Connects to 1 µF ceramic capacitor to GND to reduce output noise and improve ripple rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 170 µA typical supply current enables use in always-on sensor nodes and portable instruments. |
| Precision Rail Splitting | VO/VI = 0.5 ratio trimmed to ±0.02 V at 5 V input - eliminates need for matched resistor dividers and buffer op-amps. |
| Dedicated Noise Reduction Pin | Pin 8 accepts 1 µF capacitor to cut output noise by >75% and boost AC line rejection above 70 dB. |
| Wide Input Range Support | Operates from 4 V to 40 V - compatible with Li-ion, 12 V automotive, and industrial 24 V rails without redesign. |
| High Output Current Capability | ±20 mA sourcing/sinking allows direct biasing of dual op-amps, comparators, or ADC reference buffers. |
Applications
| Portable Data Acquisition | Single-Supply Op-Amp Biasing |
|---|---|
|
Use Scenario: Battery-powered handheld DMM or sensor logger using a 3.7 V Li-ion cell and 16-bit SAR ADC. IC Role / Device Role / Timing Role: Generates stable 1.85 V virtual ground to center ADC input range and bias front-end op-amps. Use Value: Eliminates resistor divider drift and op-amp offset errors, improving DC accuracy by ≥0.5 LSB over temperature. |
Use Scenario: Industrial signal conditioner with dual-rail op-amps powered from a single 24 V supply. IC Role / Device Role / Timing Role: Provides low-impedance midpoint reference for op-amp common-mode input and output swing. Use Value: Enables rail-to-rail input/output operation without external active circuitry, reducing BOM count by 3 components. |
| Audio Line Driver Reference | Isolated Sensor Signal Conditioning |
|
Use Scenario: Low-noise audio codec interface requiring clean 2.5 V bias for AC-coupled line drivers. IC Role / Device Role / Timing Role: Supplies regulated virtual ground referenced to isolated 5 V supply, decoupled via NR pin capacitor. Use Value: Reduces audible hum and distortion by suppressing 100/120 Hz ripple and broadband noise below 30 µVrms. |
Use Scenario: Isolated thermocouple amplifier using digital isolator and single 5 V isolated DC/DC converter. IC Role / Device Role / Timing Role: Establishes precise mid-rail reference for isolated op-amp stage and ADC driver. Use Value: Maintains ≤0.1% gain error across –40°C to +85°C ambient, meeting Class A industrial accuracy specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-splitting applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM336Z-2.5 | Shunt reference (2.5 V fixed), no rail-splitting function; requires external resistors and op-amp for VI/2 generation. | Only suitable where input voltage is fixed (e.g., 5 V system); cannot track VI changes dynamically. | Select when cost is primary constraint and VI is stable; adds 3 passive components and layout area. |
| LT6654AMPS6-2.5 | Precision series reference (2.5 V), 0.05% initial accuracy, 10 ppm/°C TC - but no VI/2 tracking or output drive capability. | Requires external op-amp and resistive divider to achieve rail-splitting; increases noise and thermal drift. | Choose for ultra-low-drift applications where VI is fixed and load current <1 mA; not a functional substitute. |
Compared with LM336Z-2.5 and LT6654AMPS6-2.5, the TLE2426CDR uniquely delivers true VI/2 tracking, ±20 mA drive, and integrated noise reduction - eliminating external components while maintaining accuracy across variable input rails and dynamic loads.
Availability
TLE2426CDR is available at Aetrix Electronics and suitable for portable instrumentation, industrial signal conditioning, and isolated sensor interfaces requiring stable component supply with long-term lifecycle support.
Supply support for TLE2426CDR 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 connectivity technologies, with decades of heritage in precision analog ICs.
The TLE2426 family was designed specifically for single-supply analog systems needing accurate, low-noise, high-drive virtual grounds - targeting data acquisition, sensor signal chains, and portable test equipment.
FAQ
What is the primary function of the TLE2426CDR?
The TLE2426CDR is a precision rail-splitter IC that generates a low-impedance virtual ground at exactly half the input supply voltage (VO = VI/2). It replaces discrete resistor dividers and op-amp buffers in single-supply analog circuits, delivering ±20 mA output current with 7.5 mΩ typical output impedance. This functionality is core to the TLE2426CDR's role in biasing op-amps, referencing ADCs, and stabilizing signal paths.
Does the TLE2426CDR require external components to operate?
The TLE2426CDR operates as a self-contained 3-terminal device in its basic configuration (IN, OUT, COMMON), but the SOIC-8 package includes a Noise Reduction (NR) pin (Pin 8) that requires a 1 µF ceramic capacitor to GND for optimal noise performance. No feedback or compensation components are needed - unlike op-amp-based solutions, the TLE2426CDR integrates trimming, amplification, and buffering internally.
Can the TLE2426CDR be used with input voltages below 4 V or above 40 V?
No - the absolute maximum input voltage for the TLE2426CDR is 40 V, and the recommended minimum operating input is 4 V per the datasheet's "Recommended Operating Conditions." Operation outside 4 V–40 V violates specification limits and risks parametric failure or damage. For 3.3 V systems, alternative solutions like the TLE2425 or discrete rail-splitting must be considered.
How does the TLE2426CDR handle output current transients?
The TLE2426CDR responds to ±10 mA output current steps with 275 µs settling to 0.1% and 390 µs to 0.01% (CL = 100 pF). Its 7.5 mΩ output impedance minimizes voltage droop during transient loading, and the integrated op-amp architecture ensures stability without external compensation. This behavior is measured and specified for the TLE2426CDR under standard test conditions.
Is the TLE2426CDR pin-compatible with other packages in the TLE2426 family?
No - the TLE2426CDR uses an 8-pin SOIC (D) package with dedicated NR, NC, and GND pins, while the TO-92 LP package is a 3-pin variant (IN, OUT, COMMON) without noise reduction or extra terminals. Pin compatibility exists only within the same package type (e.g., TLE2426CDR and TLE2426IDR share identical SOIC-8 pinout), not across package families.
TLE2426CDR 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLE2426CDR FAQ
1.How can I place an order for TLE2426CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2426CDR 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 TLE2426CDR reliable?
The price and inventory of TLE2426CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2426CDR is usually 5 days.
3.What payment methods are accepted for TLE2426CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2426CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2426CDR?
TLE2426CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2426CDR 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 TLE2426CDR?
For technical support, including TLE2426CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2426CDR requirements.
6.How does Aetrix verify that TLE2426CDR is sourced from the original manufacturer or authorized distributors?
All TLE2426CDR 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 TLE2426CDR meets industry standards.
7.What is the process for return or replacement of TLE2426CDR?
All TLE2426CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLE2426CDR, 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 TLE2426CDR part is unused and in its original packaging.
Return procedure for TLE2426CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2426CDR Tags
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