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Texas Instruments TLE2426IPG4
- Part No.:
- TLE2426IPG4
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLE2426IPG4.pdf
- Description:
- IC VREF GND REF ADJ 1% 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,626
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Product details
Overview
TLE2426IPG4 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 TLE2426IPG4 datasheet, TLE2426IPG4 pinout, TLE2426IPG4 application, or TLE2426IPG4 equivalent, this page provides verified electrical specifications, package mapping to PDIP-8, noise-reduction pin functionality, thermal performance across −40°C to 85°C, and validated alternatives for split-rail reference design.
Technical Context
The TLE2426IPG4 integrates a micropower operational amplifier with a laser-trimmed resistive divider on a single die, ensuring precise VO/VI = 0.5 ratio across temperature and load. Its architecture supports both sourcing and sinking of up to ±20 mA while maintaining regulation within ±250 µV over full output current range.
It features a dedicated Noise Reduction (NR) pin (Pin 8) requiring an external capacitor (CNR) to reduce output noise and improve ripple rejection - achieving >12-bit effective resolution and 30 µVrms output noise (10 Hz–10 kHz) with 1 µF CNR. Input bias current remains below 300 nA across 4 V–40 V input range.
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); ±0.5% over full 4–40 V range - eliminates need for external trimming in most applications. |
| Supply Current | 170 µA typ at VI = 5 V - enables battery-powered and low-power signal conditioning without compromising stability. |
| Output Current Capability | ±20 mA typ - sufficient to drive multiple op-amp inputs or ADC reference points without external buffering. |
| Output Impedance | 7.5 mΩ typ - ensures minimal voltage shift under dynamic load transients, critical for precision analog grounding. |
| Temperature Coefficient | 25 ppm/°C max - guarantees <±0.5 mV drift over −40°C to +85°C, suitable for industrial-grade instrumentation. |
| Ripple Rejection | ≥70 dB at 100 Hz (with CNR = 1 µF) - suppresses power supply noise to preserve SNR in sensitive analog signal chains. |
Pinout & Package
Package: 8-pin plastic DIP (PDIP), body width 0.300 inch, through-hole mounting. RoHS-compliant lead finish (NIPDAU).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Positive Supply Input | Accepts unregulated DC input (4–40 V); internal circuitry derives reference from this node. |
| 2 (COMMON) | Ground Reference Terminal | System ground connection point; required for proper operation and noise reduction path. |
| 3 (OUT) | Virtual Ground Output | Delivers regulated VO = VI/2; drives loads directly with low impedance and high current capability. |
| 4 (NC) | No Internal Connection | Unused pin; must remain unconnected to avoid parasitic coupling or latch-up risk. |
| 5 (NC) | No Internal Connection | Unused pin; electrically isolated - no routing or PCB trace required. |
| 6 (NC) | No Internal Connection | Unused pin; no internal bond wire; leave floating per TI design guidelines. |
| 7 (NC) | No Internal Connection | Unused pin; not bonded internally - omit from schematic symbol and layout. |
| 8 (NOISE REDUCTION) | Noise Filtering Control | Connects to external capacitor (CNR) to reduce output noise and improve line ripple rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 170 µA typical supply current enables use in always-on sensor nodes and portable instrumentation. |
| Precision Rail Splitting | Guaranteed VO/VI = 0.5 ±0.2% at 5 V ensures accurate mid-rail bias without external calibration components. |
| Dedicated Noise Reduction Pin | Pin 8 allows external capacitor integration to cut output noise from 120 µVrms to 30 µVrms (10 Hz–10 kHz). |
| High Output Drive Strength | ±20 mA sourcing/sinking capability supports driving multiple op-amps or ADC references simultaneously. |
| Wide Temperature Range | Specified for −40°C to +85°C operation - meets industrial environmental requirements without derating. |
Applications
| Portable Data Acquisition | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Battery-powered handheld multimeter acquiring bipolar analog signals from thermocouples and strain gauges using a single 9-V supply. IC Role / Device Role / Timing Role: Provides stable virtual ground for op-amp input stages and ADC reference mid-point, eliminating dual-supply complexity. Use Value: Enables true bipolar measurement with <±0.5 mV offset drift over temperature and <30 µVrms noise floor - preserving 16-bit effective resolution. |
Use Scenario: 4–20 mA loop-powered transmitter with local analog signal processing in factory automation cabinets. IC Role / Device Role / Timing Role: Generates clean mid-rail bias for instrumentation amplifiers and anti-aliasing filters operating from 24-V DC bus. Use Value: Maintains ±250 µV regulation over ±10 mA load steps and rejects 120-Hz ripple by >70 dB - ensuring stable 12-bit+ accuracy. |
| Audio Line Driver Biasing | Medical ECG Front-End Reference |
|
Use Scenario: Low-noise headphone amplifier in consumer audio equipment powered from a single 5-V USB supply. IC Role / Device Role / Timing Role: Supplies quiet, low-impedance virtual ground to op-amp output stages and coupling capacitors. Use Value: Reduces audible hum via 30 µVrms noise floor and prevents clipping distortion with 7.5-mΩ output impedance. |
Use Scenario: Portable ECG monitor acquiring microvolt-level cardiac signals using single 3.7-V Li-ion battery. IC Role / Device Role / Timing Role: Establishes precise mid-supply reference for instrumentation amplifier common-mode voltage and ADC reference. Use Value: Delivers <±0.5 mV drift over patient temperature range and sustains >100 dB CMRR in analog front-end stage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-splitter reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM334Z | Adjustable current source; requires external resistor network to generate VI/2 - no integrated divider or NR pin. | Lacks rail-splitting accuracy and noise filtering; used where programmability outweighs precision. | Select when adjustable reference voltage is needed; not drop-in for TLE2426IPG4 due to different topology and pinout. |
| LT6654AMPS6-2.5 | Fixed 2.5-V shunt reference; no VI tracking - output independent of input supply voltage. | Suitable only for fixed-voltage biasing; cannot adapt to varying VI like TLE2426IPG4's rail-splitting function. | Choose when system uses stable 5-V rail and requires ultra-low drift (5 ppm/°C); not a functional substitute for VI/2 generation. |
Compared with LM334Z and LT6654AMPS6-2.5, the TLE2426IPG4 uniquely combines input-voltage-proportional output, integrated noise reduction, and ±20 mA drive in a single PDIP-8 package - making it irreplaceable for true rail-splitting in variable-supply analog systems.
Availability
TLE2426IPG4 is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and medical analog front-ends requiring stable component supply, long-term lifecycle support, and RoHS-compliant through-hole packaging.
Supply support for TLE2426IPG4 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 IC design.
The TLE2426IPG4 belongs to TI's precision rail-splitter product line, engineered specifically to replace discrete resistor-capacitor-op-amp ground-splitting networks in space-constrained, low-noise analog systems.
FAQ
What is the primary function of the TLE2426IPG4 in analog circuit design?
The TLE2426IPG4 functions as a precision rail splitter, generating a stable virtual ground at exactly half the input supply voltage (VO = VI/2). This enables bipolar signal handling in single-supply systems - such as op-amp biasing, ADC reference splitting, and sensor signal termination - without requiring dual power rails or discrete component networks. Its integrated design replaces three or more passive and active components with one PDIP-8 IC.
Does the TLE2426IPG4 require external components to operate, and if so, which ones are mandatory?
The TLE2426IPG4 operates as a self-contained 3-terminal device with only IN, COMMON, and OUT pins required for basic rail-splitting functionality. However, the Noise Reduction (Pin 8) is optional but strongly recommended: connecting a 1-µF ceramic capacitor between Pin 8 and COMMON reduces output noise from 120 µVrms to 30 µVrms and improves ripple rejection by >20 dB. No feedback or trimming components are needed.
What is the maximum continuous input voltage rating for the TLE2426IPG4, and what happens beyond that limit?
The absolute maximum continuous input voltage for the TLE2426IPG4 is 40 V, as specified in the Absolute Maximum Ratings table. Exceeding this voltage risks permanent damage to the internal precision divider and op-amp circuitry. The device is rated for reliable operation from 4 V to 40 V, with output regulation and noise performance fully characterized across this range - including at 12 V and 24 V industrial rails.
How does the TLE2426IPG4 maintain accuracy across temperature, and what is its worst-case drift?
The TLE2426IPG4 achieves ±25 ppm/°C maximum temperature coefficient of output voltage over −40°C to +85°C, translating to <±0.5 mV total drift across its full operating range when referenced to a 5-V input. This performance stems from on-die laser-trimmed thin-film resistors and matched transistor pairs in the integrated op-amp - eliminating the drift mechanisms inherent in discrete resistor dividers and external buffers.
Can the TLE2426IPG4 be used in place of a standard voltage reference like the TL431, and why or why not?
No - the TLE2426IPG4 is not interchangeable with shunt references like the TL431 because it performs a fundamentally different function: it tracks the input supply (VO = VI/2), whereas the TL431 regulates to a fixed 2.5 V regardless of VI. The TLE2426IPG4 also lacks the TL431's cathode-anode current sink capability and is not designed for series-pass regulator configurations. Its value lies exclusively in rail-splitting, not fixed-voltage regulation.
TLE2426IPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLE2426IPG4 FAQ
1.How can I place an order for TLE2426IPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2426IPG4 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 TLE2426IPG4 reliable?
The price and inventory of TLE2426IPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2426IPG4 is usually 5 days.
3.What payment methods are accepted for TLE2426IPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2426IPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2426IPG4?
TLE2426IPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2426IPG4 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 TLE2426IPG4?
For technical support, including TLE2426IPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2426IPG4 requirements.
6.How does Aetrix verify that TLE2426IPG4 is sourced from the original manufacturer or authorized distributors?
All TLE2426IPG4 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 TLE2426IPG4 meets industry standards.
7.What is the process for return or replacement of TLE2426IPG4?
All TLE2426IPG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLE2426IPG4, 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 TLE2426IPG4 part is unused and in its original packaging.
Return procedure for TLE2426IPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2426IPG4 Tags
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TL431AIDBZR
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TL431BQDBZR
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AN431AN-ATRG1
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LM4040CYM3-2.5-TR
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LM4040CYM3-4.1-TR
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
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LM4040D20IDBZR
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LM4041DIM3-ADJ/NOPB
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
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AZ431LANTR-G1
Diodes Incorporated
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