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Texas Instruments TLE2426CDRG4
- Part No.:
- TLE2426CDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2426CDRG4.pdf
- Description:
- IC VREF GND REF ADJ 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,020
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Product details
Overview
TLE2426CDRG4 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 TLE2426CDRG4 datasheet, TLE2426CDRG4 pinout, TLE2426CDRG4 application, or TLE2426CDRG4 equivalent, this page provides verified electrical specifications, SOIC-8 package terminal mapping, noise-reduction pin functionality, and validated alternatives for split-rail analog signal conditioning in industrial and test equipment designs.
Technical Context
The TLE2426CDRG4 integrates a micropower operational amplifier with a laser-trimmed resistive divider on a single die to achieve precise VO/VI = 0.5 ratio across its full 4–40 V input range. Its internal architecture enables simultaneous sourcing and sinking of up to 20 mA while maintaining sub-±250 µV load regulation over temperature.
It features a dedicated 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 is not a regulator but a high-accuracy, low-impedance active virtual ground reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Accuracy | ±0.2% at VI = 5 V (2.48–2.52 V); ±0.5% over full 4–40 V range - ensures reliable mid-rail bias without external trimming. |
| Supply Current | 170 µA typ at VI = 5 V - enables battery-powered or ultra-low-power analog subsystems. |
| Input Voltage Range | 4 V to 40 V - supports wide-input industrial supplies and unregulated DC rails. |
| Output Current Capability | ±20 mA typ - sufficient to drive multiple op-amp inputs or small-signal stages without external buffers. |
| Output Impedance | 7.5 mΩ typ at DC - minimizes voltage droop under dynamic load, critical for precision ADC reference splitting. |
| Temperature Coefficient | 25 ppm/°C max - guarantees <±1 mV drift over 0°C to 70°C, essential for stable sensor signal chains. |
| Noise Reduction Pin | Pin 8 accepts CNR = 1 µF to reduce output RMS noise by 75% - directly improves SNR in sensitive audio or measurement circuits. |
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); sinks/sourses ±20 mA; connects to analog ground plane or op-amp reference inputs. |
| 2 (COMMON) | Reference Ground | Internal circuit common; must be connected to system ground or return path for accurate VI sensing and output stability. |
| 3 (IN) | Input Supply | Accepts unregulated 4–40 V DC input; powers internal op-amp and divider; determines output voltage magnitude. |
| 4 (NC) | No Connect | No internal connection; left floating or grounded per layout best practice; no electrical function. |
| 5 (NC) | No Connect | No internal connection; electrically isolated; no routing required. |
| 6 (NC) | No Connect | No internal connection; unused pin; no thermal or electrical role. |
| 7 (NC) | No Connect | No internal connection; no bond wire or circuit tie; may be omitted in footprint. |
| 8 (NOISE REDUCTION) | Noise Filter Input | Connects to 1 µF capacitor to ground to suppress 10 Hz–10 kHz output noise and improve line ripple rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 170 µA typical supply current enables always-on analog monitoring in energy-constrained systems. |
| Precision Rail Splitting | Guaranteed VO/VI = 0.5 ±0.2% at 5 V eliminates need for matched resistor dividers and external op-amps. |
| High Output Drive | ±20 mA sourcing/sinking capability supports driving multiple op-amp bias points or ADC reference inputs directly. |
| Dedicated Noise Reduction Pin | Pin 8 reduces output RMS noise from 120 µV to 30 µV when bypassed - critical for high-resolution data acquisition. |
| Wide Input Range | 4 V to 40 V operation accommodates legacy industrial rails, automotive battery variations, and unregulated wall adapters. |
Applications
| Portable Data Loggers | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Battery-powered environmental sensors require stable mid-rail reference for single-supply op-amps and SAR ADCs. IC Role / Device Role / Timing Role: TLE2426CDRG4 provides precise, low-noise virtual ground (VO = VI/2) to bias analog front-end amplifiers and ADC reference inputs. Use Value: Eliminates resistor-divider drift and external op-amp power overhead, extending battery life while maintaining ±12-bit effective resolution. |
Use Scenario: 4–20 mA loop-powered transmitters condition thermocouple or strain-gauge signals using single 24 V supply. IC Role / Device Role / Timing Role: TLE2426CDRG4 establishes clean, low-impedance analog ground for instrumentation amplifiers and isolation stage references. Use Value: Reduces common-mode error and improves PSRR by >60 dB vs. passive dividers, enabling <0.1% total system error. |
| Audio Line Drivers | Test & Measurement Equipment |
|
Use Scenario: Single-supply headphone amplifiers and line drivers need symmetrical ±VOUT swing without dual rails. IC Role / Device Role / Timing Role: TLE2426CDRG4 serves as virtual ground for Class-AB output stages and AC-coupled signal paths. Use Value: Enables rail-to-rail output swing with <−90 dB THD+N via low 7.5 mΩ output impedance and 30 µV noise floor (with CNR). |
Use Scenario: Benchtop oscilloscopes and multimeters use single 15 V supply for analog acquisition channels requiring bipolar signal handling. IC Role / Device Role / Timing Role: TLE2426CDRG4 supplies stable, low-drift mid-rail reference for differential input stages and programmable gain amplifiers. Use Value: Maintains <±0.01% gain linearity over temperature due to 25 ppm/°C TC and ±250 µV load regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-splitter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM334Z | 2-terminal current source; requires external resistor and op-amp to generate VI/2; no integrated divider or NR pin. | Suitable only where board space allows discrete implementation and noise performance is secondary. | Choose LM334Z only if cost sensitivity outweighs design time and noise requirements; lacks TLE2426CDRG4's integration and noise reduction. |
| LT6654AMPS6-2.5 | Fixed 2.5 V shunt reference; no VI tracking; requires external resistive network to derive VI/2; higher quiescent current (120 µA vs. 170 µA). | Applicable only in fixed-VI systems (e.g., 5 V rails); cannot adapt to variable 4–40 V inputs like TLE2426CDRG4. | Select LT6654AMPS6-2.5 only for fixed 5 V supplies where absolute 2.5 V accuracy matters more than input tracking or low-noise rail splitting. |
Compared with LM334Z and LT6654AMPS6-2.5, the TLE2426CDRG4 uniquely combines input-voltage tracking, integrated noise reduction, and ±20 mA drive in a single SOIC-8 package - making it the only drop-in solution for dynamic, wide-input, low-noise rail splitting.
Availability
TLE2426CDRG4 is available at Aetrix Electronics and suitable for portable data loggers, industrial sensor signal conditioning, and audio line drivers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TLE2426CDRG4 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 heritage in precision analog IC design and manufacturing.
The TLE2426 family was engineered specifically for single-supply analog systems needing accurate, low-noise, high-drive virtual grounds - targeting industrial, test equipment, and portable instrumentation applications.
FAQ
What is the primary function of the TLE2426CDRG4?
The TLE2426CDRG4 is a precision rail-splitter IC that generates a stable virtual ground at exactly half the input supply voltage (VO = VI/2). It replaces passive resistor dividers and external op-amps in single-supply analog systems, delivering ±20 mA output current with low 7.5 mΩ output impedance and 170 µA typical supply current. Its core function is to establish a clean, low-drift, low-noise reference midpoint for op-amp biasing, ADC references, and signal termination - all within a single SOIC-8 package.
Does the TLE2426CDRG4 require external components to operate?
The TLE2426CDRG4 operates as a complete rail splitter with only three connections: IN (Pin 3), COMMON (Pin 2), and OUT (Pin 1). However, optimal noise performance requires a 1 µF capacitor between Pin 8 (Noise Reduction) and ground. No external resistors, op-amps, or compensation networks are needed for basic VI/2 generation. The device is fully self-contained - unlike discrete solutions that demand matched resistors, decoupling caps, and buffer amplifiers - reducing BOM count and layout complexity.
What is the purpose of Pin 8 (Noise Reduction) on the TLE2426CDRG4?
Pin 8 on the TLE2426CDRG4 is the dedicated Noise Reduction (NR) input. When bypassed with a 1 µF capacitor to ground, it reduces output RMS noise from 120 µV to 30 µV (10 Hz–10 kHz) and significantly improves ripple rejection - exceeding 12-bit accuracy. This pin directly controls internal noise filtering circuitry; leaving it unconnected results in higher broadband noise and degraded power supply rejection. It is not a general-purpose bypass pin but an engineered feature for precision analog signal chains where SNR and PSRR are critical.
Can the TLE2426CDRG4 be used with input voltages below 4 V or above 40 V?
No - the TLE2426CDRG4 is rated for continuous operation only between 4 V and 40 V input voltage. Absolute maximum ratings specify 40 V as the upper limit; exceeding this risks permanent damage. Below 4 V, the internal op-amp and trimmed divider fail to maintain specified output accuracy and regulation - output voltage deviates significantly from VI/2, and load regulation degrades beyond ±250 µV. For 3.3 V systems, alternative solutions such as the TLE2425 or discrete rail-splitting topologies must be considered.
Is the TLE2426CDRG4 pin-compatible with other variants like TLE2426IDRG4 or TLE2426MDRG4?
Yes - the TLE2426CDRG4, TLE2426IDRG4, and TLE2426MDRG4 share identical SOIC-8 (D package) pinouts and terminal functions. The suffix difference (C/I/M) denotes temperature grade only: C (0°C to 70°C), I (−40°C to 85°C), and M (−55°C to 125°C). All three variants use the same pin configuration, electrical behavior, and noise-reduction pin functionality. Designers may substitute based on environmental requirements without PCB changes - provided thermal and reliability validation aligns with the target application's operating conditions.
TLE2426CDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
TLE2426CDRG4 FAQ
1.How can I place an order for TLE2426CDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2426CDRG4 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 TLE2426CDRG4 reliable?
The price and inventory of TLE2426CDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2426CDRG4 is usually 5 days.
3.What payment methods are accepted for TLE2426CDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2426CDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2426CDRG4?
TLE2426CDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2426CDRG4 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 TLE2426CDRG4?
For technical support, including TLE2426CDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2426CDRG4 requirements.
6.How does Aetrix verify that TLE2426CDRG4 is sourced from the original manufacturer or authorized distributors?
All TLE2426CDRG4 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 TLE2426CDRG4 meets industry standards.
7.What is the process for return or replacement of TLE2426CDRG4?
All TLE2426CDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLE2426CDRG4, 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 TLE2426CDRG4 part is unused and in its original packaging.
Return procedure for TLE2426CDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2426CDRG4 Tags
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