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Texas Instruments TLE2426IDG4
- Part No.:
- TLE2426IDG4
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2426IDG4.pdf
- Description:
- IC VREF GND REF ADJ 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,455
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Product details
Overview
TLE2426IDG4 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 input, delivers ±20 mA output current, maintains 7.5 mΩ typical output impedance, and draws only 170 µA at 5 V - enabling low-noise, space-efficient signal conditioning in data acquisition, sensor interfaces, and portable instrumentation.
For engineers reviewing the TLE2426IDG4 datasheet, TLE2426IDG4 pinout, TLE2426IDG4 application, or TLE2426IDG4 equivalent, this device serves as a drop-in replacement for resistor-divider + op-amp ground references - offering guaranteed initial output tolerance <1% at 5 V or 12 V, temperature coefficient ≤25 ppm/°C, and ripple rejection exceeding 12-bit accuracy without external active components.
Technical Context
The TLE2426IDG4 integrates a micropower operational amplifier with a laser-trimmed resistive divider on a single die, ensuring precise VO/VI = 0.5 ratio across its full 4–40 V input range and −40°C to +85°C operating temperature. Its architecture eliminates need for external compensation or trimming while maintaining stability with up to 100 pF load capacitance.
It features a dedicated noise-reduction (NR) pin (Pin 8) in the SOIC-8 package, allowing external capacitor connection to reduce output noise from 120 µVRMS to 30 µVRMS and improve line ripple rejection - a capability absent in 3-pin TO-92 variants like TLE2426ILP.
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 | ±0.02 V at VI = 5 V (2.48–2.52 V); ±0.03 V over full temp range - enables direct use in 12-bit ADC reference applications. |
| Supply Current | 170 µA typ at VI = 5 V - allows battery-powered operation for >1 year in low-duty-cycle sensor nodes. |
| Output Impedance | 7.5 mΩ typ - sustains <10 µV droop under 10 mA load step, critical for driving SAR ADC reference inputs. |
| Output Regulation | ±45 µV typ sourcing/sinking ±10 mA - ensures stable bias point for dual-rail op-amps without additional buffering. |
| Temperature Coefficient | 25 ppm/°C max - contributes <±0.3 mV drift over −40°C to +85°C at 2.5 V output, meeting precision analog requirements. |
| Noise Reduction Pin | Pin 8 (NR) accepts 1 µF capacitor to cut RMS noise from 120 µV to 30 µV - directly improves SNR in audio and measurement front ends. |
Pinout & Package
Package: SOIC-8 (D package), surface-mount, RoHS-compliant, moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Low-impedance virtual ground node; drives ±20 mA into loads or reference inputs of downstream op-amps/ADCs. |
| 2 (COMMON) | Ground Reference | System ground return path; must be connected to PCB ground plane for accurate output regulation. |
| 3 (IN) | Input Supply | Accepts unregulated DC input (4–40 V); internal circuitry derives exact midpoint voltage regardless of input variation. |
| 4 (NC) | No Internal Connection | Unused pin; no bonding or internal circuitry - may be left floating or tied to ground for mechanical stability. |
| 5 (NC) | No Internal Connection | Unused pin; electrically isolated - no routing or thermal coupling required. |
| 6 (NC) | No Internal Connection | Unused pin; no function - does not affect performance if unconnected. |
| 7 (NC) | No Internal Connection | Unused pin; no electrical role - safe to omit from layout. |
| 8 (NOISE REDUCTION) | Noise Filter Control | Connects to external 1 µF capacitor to reduce output noise by 75% and enhance power supply ripple rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 170 µA typical supply current at 5 V enables integration into always-on, energy-constrained IoT sensor nodes. |
| Precision Rail Splitting | Guaranteed VO = VI/2 ±0.02 V at 25°C and ±0.03 V over full temperature range - eliminates manual calibration. |
| High Output Drive | ±20 mA sourcing/sinking capability directly biases op-amp stages or drives multiple ADC reference pins without buffer amplifiers. |
| Low Output Impedance | 7.5 mΩ typical output resistance prevents voltage shift under dynamic load, preserving signal integrity in fast-switching systems. |
| Noise Reduction Pin | Dedicated Pin 8 allows 1 µF capacitor to reduce broadband RMS noise from 120 µV to 30 µV - critical for high-resolution measurements. |
| Wide Temperature Range | Specified from −40°C to +85°C (I-grade) - suitable for automotive cabin electronics and industrial control environments. |
Applications
| Data Acquisition Front End | Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Single-supply 12-bit SAR ADC system powered from 12 V, requiring clean mid-rail reference for differential input stage. IC Role / Device Role / Timing Role: Generates precise 6.0 V virtual ground (VI = 12 V) to bias ADC input common-mode voltage and op-amp driver stage. Use Value: Eliminates resistor divider + op-amp discrete solution, reducing board area by 65% and improving long-term drift stability by 5×. |
Use Scenario: Bridge-based pressure sensor powered from 5 V microcontroller rail, needing stable 2.5 V reference for instrumentation amplifier. IC Role / Device Role / Timing Role: Provides low-noise, low-drift 2.5 V virtual ground as common-mode reference for INA125-type amplifier. Use Value: Achieves <0.01% gain error contribution and 75% lower output noise vs. RC-filtered Zener, improving sensor resolution by 1.5 LSB. |
| Portable Instrumentation | Audio Line Driver Bias |
|
Use Scenario: Handheld multimeter using 9 V battery and dual-supply op-amps for analog front end. IC Role / Device Role / Timing Role: Splits 9 V into stable 4.5 V virtual ground to enable rail-to-rail input/output op-amp operation. Use Value: Extends battery life >20% vs. discrete rail splitter due to 170 µA quiescent current and eliminates startup settling delay. |
Use Scenario: Class AB headphone amplifier IC requiring symmetrical ±2.5 V bias from single 5 V USB supply. IC Role / Device Role / Timing Role: Supplies low-impedance 2.5 V bias node to amplifier's input stage and output coupling network. Use Value: Reduces even-order harmonic distortion by 12 dB via improved PSRR and suppresses 100 Hz hum by >60 dB using NR pin capacitor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-splitter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE2426CDG4 | Same SOIC-8 pinout and electrical specs, but rated for 0°C to 70°C commercial temperature range. | Limited to non-industrial environments; unsuitable for automotive or extended-temperature deployments. | Select when cost sensitivity outweighs extended temperature requirement and ambient stays within 0–70°C. |
| TLE2426ILP | TO-92 3-pin package; no noise-reduction pin; identical I-grade temp range but lacks NR functionality and higher drive capability. | Used where board space is constrained and noise performance is secondary; cannot support <30 µV RMS noise targets. | Choose for ultra-low-cost, space-limited designs accepting 120 µV RMS noise and no external NR capacitor option. |
Compared with TLE2426CDG4, the TLE2426IDG4 offers guaranteed operation down to −40°C for cold-environment reliability; compared with TLE2426ILP, it provides 75% lower noise and 2× higher output drive - making it optimal for precision industrial and automotive signal chains.
Availability
TLE2426IDG4 is available at Aetrix Electronics and suitable for data acquisition systems, sensor interface modules, and portable instrumentation requiring stable component supply with guaranteed −40°C to +85°C performance and RoHS compliance.
Supply support for TLE2426IDG4 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 over 50 years of innovation in precision analog ICs.
The TLE2426 family was designed specifically to replace bulky, drift-prone discrete rail-splitter circuits in single-supply analog systems - targeting test equipment, industrial sensors, and portable medical devices.
FAQ
What is the primary function of the TLE2426IDG4?
The TLE2426IDG4 is a precision rail-splitter IC that generates a stable virtual ground at exactly half the input supply voltage (VO = VI/2). It replaces resistor-divider + op-amp circuits in single-supply analog systems, delivering ±20 mA output current with 7.5 mΩ output impedance and 170 µA quiescent current. The TLE2426IDG4 achieves this without external components except an optional 1 µF capacitor on Pin 8 for noise reduction.
Does the TLE2426IDG4 require external capacitors for stability?
The TLE2426IDG4 is internally compensated and remains stable with load capacitances up to 100 pF without external compensation. However, an external 1 µF capacitor connected to Pin 8 (Noise Reduction) is required to achieve the specified 30 µVRMS noise performance and enhanced ripple rejection. No input or output bypass capacitors are mandatory for basic operation, though 0.1 µF ceramic at the IN pin is recommended for high-frequency noise suppression.
What is the maximum input voltage the TLE2426IDG4 can handle?
The TLE2426IDG4 supports a continuous input voltage range of 4 V to 40 V, as specified in its absolute maximum ratings and recommended operating conditions. This allows direct use with common industrial rails (e.g., 24 V), automotive batteries (up to 36 V transient), and legacy 5 V/12 V systems. Exceeding 40 V risks permanent damage, and operation below 4 V results in undefined output behavior per the datasheet.
How does the noise-reduction pin (Pin 8) improve performance in the TLE2426IDG4?
Pin 8 of the TLE2426IDG4 is the dedicated Noise Reduction (NR) terminal. When a 1 µF capacitor is connected between Pin 8 and ground, it reduces output RMS noise from 120 µV to 30 µV and significantly improves power supply ripple rejection - especially at 50/60 Hz and harmonics. This feature is exclusive to the 8-pin D-package variants (e.g., TLE2426IDG4) and is not available in 3-pin TO-92 versions like TLE2426ILP.
Is the TLE2426IDG4 pin-compatible with other members of the TLE2426 family?
The TLE2426IDG4 shares the same SOIC-8 (D) package and pinout with TLE2426CDG4 and TLE2426MD, including identical Pin 1 (OUT), Pin 2 (COMMON), Pin 3 (IN), and Pin 8 (NR). However, it is not pin-compatible with 3-pin TO-92 variants (e.g., TLE2426ILP) or PDIP-8 versions due to differing pin counts and layouts. Always verify temperature grade (I = −40°C to +85°C) and suffix (G4 = RoHS-compliant NiPdAu finish) when substituting.
TLE2426IDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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
TLE2426IDG4 FAQ
1.How can I place an order for TLE2426IDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2426IDG4 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 TLE2426IDG4 reliable?
The price and inventory of TLE2426IDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2426IDG4 is usually 5 days.
3.What payment methods are accepted for TLE2426IDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2426IDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2426IDG4?
TLE2426IDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2426IDG4 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 TLE2426IDG4?
For technical support, including TLE2426IDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2426IDG4 requirements.
6.How does Aetrix verify that TLE2426IDG4 is sourced from the original manufacturer or authorized distributors?
All TLE2426IDG4 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 TLE2426IDG4 meets industry standards.
7.What is the process for return or replacement of TLE2426IDG4?
All TLE2426IDG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLE2426IDG4, 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 TLE2426IDG4 part is unused and in its original packaging.
Return procedure for TLE2426IDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2426IDG4 Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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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
Diodes Incorporated
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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
Texas Instruments
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AZ431LANTR-G1
Diodes Incorporated
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