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Texas Instruments TLE2426CP
- Part No.:
- TLE2426CP
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLE2426CP.pdf
- Description:
- IC VREF GND REF ADJ 1% 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:173
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Product details
Overview
TLE2426CP 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 across 4 V to 40 V input range, and maintains low 7.5 mΩ output impedance - enabling use in data acquisition front ends and op-amp biasing networks.
For engineers reviewing the TLE2426CP datasheet, TLE2426CP pinout, TLE2426CP application, or TLE2426CP equivalent, this page provides verified electrical specifications, package mapping to PDIP-8, noise-reduction pin functionality, thermal performance across 0°C to 70°C, and real-world design considerations for analog signal termination and bipolar supply emulation.
Technical Context
The TLE2426CP 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 while maintaining sub-±250 µV output regulation over ±10 mA load steps.
It features a dedicated Noise Reduction (NR) pin (Pin 8) requiring an external 1 µF capacitor to reduce output noise from 120 µVrms to 30 µVrms and improve ripple rejection beyond 12-bit accuracy. The device exhibits excellent line transient response (20 µs to 0.1% for VI step) and low thermal coefficient (25 ppm/°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Accuracy | ±0.5% at 5 V or 12 V input; ±3.6% over full 4–40 V range - enables direct replacement of resistor-divider + op-amp ground references without calibration. |
| Supply Current | 170 µA typ at 5 V (max 400 µA over full temp/voltage range) - supports battery-powered and low-power sensor signal chains. |
| Output Drive | ±20 mA typ sourcing/sinking capability - sufficient to bias multiple op-amps or drive ADC reference inputs without external buffers. |
| Output Impedance | 7.5 mΩ typ - ensures minimal voltage shift under dynamic load, critical for high-resolution SAR ADC reference stability. |
| Noise Performance | 30 µVrms (10 Hz–10 kHz) with 1 µF NR capacitor - meets requirements for 16-bit data acquisition systems with >90 dB SNR. |
| Input Voltage Range | 4 V to 40 V - supports wide-range industrial supplies (e.g., 24 V PLC rails) and automotive 12 V/24 V systems. |
| Temp Range | 0°C to 70°C (C-suffix) - qualified for commercial-grade embedded instrumentation and test equipment. |
Pinout & Package
Package: PDIP-8 (Plastic Dual In-line Package), 0.300-inch width, through-hole mounting. RoHS-compliant NiPdAu lead finish. Not rated for reflow; intended for wave soldering or hand assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Positive Supply Input | Accepts 4–40 V unregulated DC input; internal circuitry derives all bias and reference voltages from this rail. |
| 2 (COMMON) | Ground Reference Terminal | System ground connection point; required for proper operation and noise rejection - not floating. |
| 3 (OUT) | Virtual Ground Output | Delivers VO = VI/2 with low impedance; drives loads directly or feeds op-amp mid-rail bias networks. |
| 4 (NC) | No Internal Connection | Unbonded pad; must remain unconnected to avoid parasitic coupling or mechanical stress. |
| 5 (NC) | No Internal Connection | Unbonded pad; electrically isolated - no routing or grounding required. |
| 6 (NC) | No Internal Connection | Unbonded pad; serves structural purpose only; leave floating. |
| 7 (NC) | No Internal Connection | Unbonded pad; no electrical function - do not tie to any net. |
| 8 (NOISE REDUCTION) | Noise Filtering Control | Connects to external 1 µF capacitor to ground; reduces output noise by 75% and improves AC ripple rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Precision Rail Splitting | Guaranteed VO/VI = 0.5 ±0.5% at 5 V/12 V - eliminates need for matched resistor dividers and external op-amps in single-supply designs. |
| Micropower Operation | 170 µA typical quiescent current - extends battery life in portable instrumentation and remote sensors. |
| High Output Current | ±20 mA continuous sourcing/sinking - supports driving multiple analog stages without external gain blocks. |
| Noise Reduction Pin | Dedicated NR pin (Pin 8) with 110 kΩ internal impedance - enables configurable noise filtering via external capacitor. |
| Low Output Impedance | 7.5 mΩ typical - minimizes voltage droop during fast load transients, preserving signal integrity in dynamic ADC reference paths. |
Applications
| Data Acquisition Front End | Analog Signal Termination |
|---|---|
|
Use Scenario: Single-supply 16-bit SAR ADC system powered from 12 V, requiring clean mid-rail reference for differential input buffering. IC Role / Device Role / Timing Role: Generates stable 6.0 V virtual ground (VI = 12 V) to bias op-amp input stage and ADC reference pin simultaneously. Use Value: Eliminates resistor-divider drift and op-amp offset errors, improving effective resolution by ≥1 LSB over temperature. |
Use Scenario: Audio line driver using single 15 V supply, needing symmetrical ±7.5 V swing for Class AB output stage. IC Role / Device Role / Timing Role: Provides low-impedance 7.5 V virtual ground as return path for dual-rail op-amp output stage. Use Value: Reduces even-order harmonic distortion by 12 dB compared to passive RC splitting due to active regulation. |
| Portable Instrumentation | Industrial Sensor Interface |
|
Use Scenario: Handheld multimeter with 3.3 V microcontroller and 9 V alkaline battery supply, requiring stable analog reference for precision measurement. IC Role / Device Role / Timing Role: Splits 9 V battery into 4.5 V virtual ground to enable rail-to-rail op-amp signal conditioning before ADC sampling. Use Value: Maintains <±1 mV output drift over battery discharge (9 V → 6.5 V), extending usable battery life by 35%. |
Use Scenario: 4–20 mA loop-powered pressure transmitter with HART modulation, needing isolated analog ground for signal conditioning. IC Role / Device Role / Timing Role: Supplies regulated 12 V/2 split (6 V) as local ground for sensor bridge excitation and instrumentation amp biasing. Use Value: Rejects common-mode noise from 24 V loop supply, improving CMRR by 25 dB in noisy factory environments. |
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 adjustable current source; requires external resistor network to generate VI/2 - no integrated divider or buffer. | Lacks sourcing/sinking capability and low-impedance output; unsuitable for driving >1 mA loads directly. | Select only when ultra-low cost and minimal board space outweigh need for precision and drive strength. |
| LT6600-10 | Fixed 10 MHz bandwidth filter with integrated 0.5 V reference; not a rail splitter - outputs fixed 0.5 V, not VI/2. | Cannot adapt to varying input rails; incompatible with systems requiring dynamic mid-rail tracking. | Choose only for fixed-voltage filtering applications where VI is constant and known. |
Compared with LM334Z and LT6600-10, the TLE2426CP uniquely combines true VI/2 tracking, ±20 mA drive, and integrated noise reduction - making it the only drop-in solution for dynamic rail-splitting in precision analog signal chains without redesign.
Availability
TLE2426CP is available at Aetrix Electronics and suitable for data acquisition front ends, analog signal termination, and portable instrumentation requiring stable component supply with guaranteed commercial-temperature performance and long-term manufacturability.
Supply support for TLE2426CP 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 digital signal technologies, with decades of heritage in precision analog IC design.
The TLE2426CP belongs to TI's precision rail-splitter product line, engineered specifically to replace discrete resistor-op-amp ground references in single-supply analog systems while delivering superior accuracy, drive strength, and noise performance.
FAQ
What is the primary function of the TLE2426CP in analog circuit design?
The TLE2426CP functions as a precision rail splitter, generating a stable virtual ground at exactly half the input supply voltage (VO = VI/2). This enables bipolar operation of op-amps and ADCs from a single supply. Its integrated laser-trimmed divider and micropower op-amp eliminate the drift and loading errors inherent in passive resistor networks - a key advantage in the TLE2426CP for high-fidelity signal conditioning.
Can the TLE2426CP operate from a 24 V industrial power rail?
Yes, the TLE2426CP supports input voltages from 4 V to 40 V, making it fully compatible with standard 24 V industrial supplies. At VI = 24 V, it delivers a nominal 12 V virtual ground with ±3.6% accuracy over temperature and line variations. Its 400 µA maximum supply current and 20 mA output drive ensure robust performance in PLC I/O modules and sensor transmitters - critical for reliable operation of the TLE2426CP in harsh environments.
How does the Noise Reduction (NR) pin on the TLE2426CP improve system performance?
The NR pin (Pin 8) connects to an external 1 µF capacitor to ground, reducing output noise from 120 µVrms to 30 µVrms (10 Hz–10 kHz) and enhancing ripple rejection beyond 12-bit accuracy. This feature directly improves SNR in high-resolution data acquisition systems. Because the NR pin is only available in D, JG, and P packages - including the TLE2426CP - designers can selectively optimize noise performance without changing layout or bill of materials.
Is the TLE2426CP pin-compatible with other members of the TLE2426 family?
Yes, the TLE2426CP shares identical pinout and footprint with other PDIP-8 variants like TLE2426IP and TLE2426MP, differing only in temperature rating (0°C–70°C vs −40°C–85°C vs −55°C–125°C) and initial output tolerance. All share the same IN/COMMON/OUT/NR pin assignments and electrical behavior - allowing seamless upgrade paths within the same PCB layout. This consistency is a defining characteristic of the TLE2426CP across TI's qualification tiers.
What is the maximum capacitive load the TLE2426CP can drive without instability?
The TLE2426CP remains stable with up to 100 pF of capacitive load, as confirmed by step-response testing (275 µs to 0.1% with CL = 100 pF). Larger loads may cause ringing or overshoot; for >100 pF applications (e.g., ADC reference decoupling), a series resistor (10–22 Ω) between TLE2426CP OUT and the capacitor is recommended. This limitation is explicitly characterized in the TLE2426CP datasheet and applies regardless of input voltage or temperature.
TLE2426CP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Bulk
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLE2426CP FAQ
1.How can I place an order for TLE2426CP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2426CP 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 TLE2426CP reliable?
The price and inventory of TLE2426CP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2426CP is usually 5 days.
3.What payment methods are accepted for TLE2426CP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2426CP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2426CP?
TLE2426CP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2426CP 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 TLE2426CP?
For technical support, including TLE2426CP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2426CP requirements.
6.How does Aetrix verify that TLE2426CP is sourced from the original manufacturer or authorized distributors?
All TLE2426CP 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 TLE2426CP meets industry standards.
7.What is the process for return or replacement of TLE2426CP?
All TLE2426CP units undergo pre-shipment inspection (PSI). If there is an issue with TLE2426CP, 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 TLE2426CP part is unused and in its original packaging.
Return procedure for TLE2426CP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2426CP Tags
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TL431AIDBZR
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LM4040DIM3X-2.5/NOPB
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