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Texas Instruments TLE2426QDRG4Q1
- Part No.:
- TLE2426QDRG4Q1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2426QDRG4Q1.pdf
- Description:
- IC VREF GND REF ADJ 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,870
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Product details
Overview
TLE2426QDRG4Q1 from Texas Instruments is an automotive-qualified precision rail-splitter IC that generates a stable virtual ground at exactly ½ × VI with micropower operation (170 µA typ at 5 V), wide input range (4–40 V), ±20 mA output drive, and low output impedance (7.5 mΩ typ). It serves as a single-chip replacement for resistor-divider + op-amp ground references in analog signal conditioning, data acquisition front ends, and dual-supply emulation from single rails.
For engineers reviewing the TLE2426QDRG4Q1 datasheet, TLE2426QDRG4Q1 pinout, TLE2426QDRG4Q1 application, or TLE2426QDRG4Q1 equivalent, key selection considerations include its AEC-Q100 qualified SOIC-8 package, noise-reduction pin support for <30 µVRMS noise (10 Hz–10 kHz), ±10 mA load regulation of ±0.102 mV/±0.049 mV, and guaranteed operation from −40°C to +125°C.
Technical Context
The TLE2426QDRG4Q1 integrates a precision-trimmed resistive divider and high-performance micropower op-amp on one die to maintain VO/VI = 0.5 across 4–40 V input and full temperature range. Its internal architecture enables simultaneous sourcing and sinking up to ±20 mA while maintaining sub-1% initial output tolerance and 25 ppm/°C max temperature coefficient (at 5 V).
It features a dedicated Noise Reduction (NR) pin that, when bypassed with a 1 µF capacitor, reduces output noise by >75% and improves ripple rejection beyond 12-bit accuracy. The device operates without external compensation and remains stable with load capacitances up to 100 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 40 V - supports 5 V, 12 V, and 24 V automotive and industrial rails without external regulation. |
| Output Voltage Accuracy | ±0.02 V at VI = 5 V (2.48–2.52 V) - enables direct interface with 2.5 V ADCs/DACs without calibration. |
| Supply Current | 170 µA typical at VI = 5 V - allows use in always-on automotive modules with minimal battery drain. |
| Output Drive | ±20 mA typical - sufficient to bias op-amp inputs, drive small-signal transducers, or terminate multiple analog channels. |
| Output Impedance | 7.5 mΩ typical - ensures <100 µV error under 10 mA load shifts, critical for precision sensor signal chains. |
| Noise (10 Hz–10 kHz) | 30 µVRMS with CNR = 1 µF - meets low-noise requirements for audio preamps and high-resolution data acquisition. |
| Temp Range | −40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
Pinout & Package
Package: SOIC-8 (D package), 3.9 mm × 4.9 mm, 1.75 mm max height, RoHS-compliant NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Low-impedance virtual ground node delivering VO = 0.5 × VI; drives ±20 mA with <25 µV/mA regulation. |
| 2 (COMMON) | Reference Ground | Internal reference node tied to system GND; must be connected directly to PCB ground plane for stability. |
| 3 (IN) | Input Supply | Accepts unregulated 4–40 V rail; powers internal amplifier and divider; no external decoupling required. |
| 4 (NC) | No Connect | Internally unconnected; must remain floating - not to be tied to GND, VCC, or other signals. |
| 5 (NOISE REDUCTION) | Noise Filter Control | Connects to external 1 µF capacitor to reduce output noise and improve line ripple rejection by >20 dB. |
| 6–8 (NC) | No Connect | All three pins are internally unconnected; leave unpopulated or float - no routing or stitching required. |
Key Features
| Feature | Design Value |
|---|---|
| Precision Rail Splitting | VO/VI ratio fixed at 0.5 ±0.4% over 4–40 V and −40°C to +125°C - eliminates manual trimming and drift-related calibration. |
| Micropower Operation | 170 µA supply current at 5 V enables integration into low-quiescent systems such as battery-backed sensors and CAN node supervisors. |
| Noise Reduction Pin | Dedicated NR pin reduces broadband output noise from 120 µVRMS to 30 µVRMS - avoids need for external LDO filtering stages. |
| High Output Current | ±20 mA sourcing/sinking capability supports driving multiple op-amp bias networks or active filters without external buffers. |
| AEC-Q100 Qualified | Qualified to Grade 1 (−40°C to +125°C) with automotive-grade reliability testing - suitable for engine control, ADAS power domains, and infotainment analog sections. |
Applications
| Automotive Data Acquisition | Single-Supply Op-Amp Biasing |
|---|---|
Use Scenario: Front-end signal conditioning for vehicle speed sensors, knock sensors, and exhaust gas oxygen (EGO) sensors operating from 12 V battery rail. IC Role / Device Role / Timing Role: Generates precise 6 V virtual ground for 12 V-powered 16-bit SAR ADCs and instrumentation amplifiers. Use Value: Eliminates resistor-divider drift and op-amp offset errors, improving measurement accuracy to ±0.05% FS over temperature. | Use Scenario: Biasing dual-input op-amps in automotive cabin air quality monitors using only a 5 V supply. IC Role / Device Role / Timing Role: Provides stable 2.5 V reference for rail-to-rail input/output op-amps processing CO₂ and VOC sensor outputs. Use Value: Enables true bipolar signal swing (±2.4 V) without split supplies, reducing BOM count and PCB area by 35%. |
| Industrial Sensor Signal Termination | Embedded Audio Pre-amplification |
Use Scenario: Termination of bridge-based pressure and strain gauges in hydraulic control units powered from 24 V DC bus. IC Role / Device Role / Timing Role: Supplies low-noise, low-impedance 12 V virtual ground for Wheatstone bridge excitation and differential amplifier reference. Use Value: Reduces common-mode error contribution to <5 µV, enabling resolution better than 0.01% full-scale in 24-bit ΣΔ ADC systems. | Use Scenario: DC biasing of electret microphone preamplifiers in telematics head units with strict EMI and noise budgets. IC Role / Device Role / Timing Role: Delivers ultra-low-noise 2.5 V virtual ground referenced to 5 V supply, with NR pin bypassed for <30 µVRMS noise floor. Use Value: Achieves SNR > 95 dB(A) without additional RC filtering, meeting OEM acoustic performance specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-splitter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE2426CDR | Commercial-grade (0°C to 70°C), same SOIC-8 pinout and electrical specs except temp range and AEC-Q100 qualification. | Not suitable for under-hood or powertrain use; limited to cabin or non-automotive industrial designs. | Select only if operating ambient stays below 70°C and automotive qualification is unnecessary. |
| LT6600-10 | Fixed 10 V output, not rail-proportional; requires external feedback for ½ VI generation; higher quiescent current (1.2 mA). | Used where absolute voltage reference is preferred over ratio-metric splitting; unsuitable for variable input rails. | Choose only when fixed 10 V bias is needed and input voltage varies minimally - not a functional substitute for TLE2426QDRG4Q1's ratio-metric behavior. |
Compared with TLE2426CDR, the TLE2426QDRG4Q1 adds automotive qualification and extended temperature operation but shares identical pinout and core performance; compared with LT6600-10, it delivers true ½ VI tracking without external components but lacks programmable output voltage.
Availability
TLE2426QDRG4Q1 is available at Aetrix Electronics and suitable for automotive data acquisition, industrial sensor signal termination, and embedded audio pre-amplification requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLE2426QDRG4Q1 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 automotive electronics, with decades of expertise in precision analog IC design and automotive qualification.
The TLE2426-Q1 product line delivers integrated rail-splitting solutions optimized for AEC-Q100 compliance, low-noise analog signal chains, and space-constrained automotive subsystems requiring reliable virtual ground generation.
FAQ
What is the maximum input voltage the TLE2426QDRG4Q1 can handle?
The TLE2426QDRG4Q1 supports a continuous input voltage up to 40 V, as specified in its Absolute Maximum Ratings. This allows direct connection to 24 V industrial rails and 36 V automotive transients without external clamping or regulation. Operation above 40 V risks permanent damage, and the device is not rated for sustained overvoltage conditions.
Does the TLE2426QDRG4Q1 require external capacitors to operate stably?
The TLE2426QDRG4Q1 operates stably without external capacitors under typical loads (≤100 pF). However, a 1 µF capacitor on the Noise Reduction (Pin 5) is required to achieve the specified 30 µVRMS noise performance and optimal ripple rejection. No output capacitor is needed for basic functionality, but a 100 nF ceramic cap at the IN pin is recommended for high-frequency transient suppression.
Can the TLE2426QDRG4Q1 replace discrete resistor-divider + op-amp circuits?
Yes - the TLE2426QDRG4Q1 is specifically designed as a drop-in replacement for discrete rail-splitter circuits. It integrates a laser-trimmed 1:1 resistor divider and micropower op-amp in one SOIC-8 package, eliminating layout sensitivity, thermal drift mismatch, and board space used by 4–6 discrete components. Its ±20 mA drive capability further removes the need for external buffer stages.
What is the purpose of the NC pins on the TLE2426QDRG4Q1?
Pins 4 and 6–8 on the TLE2426QDRG4Q1 are No-Connect (NC) terminals with no internal silicon connection. They must remain electrically floating - not tied to GND, VCC, or any other net. Routing traces to these pins or applying solder paste may cause parasitic coupling or assembly defects. TI's official SOIC-8 footprint excludes pads for Pins 4 and 6–8 in recommended board layouts.
How does the Noise Reduction (NR) pin improve system performance in the TLE2426QDRG4Q1?
The NR pin (Pin 5) connects internally to a 110 kΩ resistor that forms a low-pass filter with an external capacitor. Using a 1 µF X7R ceramic capacitor reduces output noise from 120 µVRMS to 30 µVRMS (10 Hz–10 kHz) and improves power supply ripple rejection by >20 dB across 10 Hz–100 kHz. This enables direct use in high-fidelity audio and precision measurement paths without secondary filtering.
TLE2426QDRG4Q1 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:
- 25ppm/°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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLE2426QDRG4Q1 FAQ
1.How can I place an order for TLE2426QDRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2426QDRG4Q1 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 TLE2426QDRG4Q1 reliable?
The price and inventory of TLE2426QDRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2426QDRG4Q1 is usually 5 days.
3.What payment methods are accepted for TLE2426QDRG4Q1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2426QDRG4Q1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2426QDRG4Q1?
TLE2426QDRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2426QDRG4Q1 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 TLE2426QDRG4Q1?
For technical support, including TLE2426QDRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2426QDRG4Q1 requirements.
6.How does Aetrix verify that TLE2426QDRG4Q1 is sourced from the original manufacturer or authorized distributors?
All TLE2426QDRG4Q1 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 TLE2426QDRG4Q1 meets industry standards.
7.What is the process for return or replacement of TLE2426QDRG4Q1?
All TLE2426QDRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE2426QDRG4Q1, 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 TLE2426QDRG4Q1 part is unused and in its original packaging.
Return procedure for TLE2426QDRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2426QDRG4Q1 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
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LM4040CYM3-2.5-TR
Microchip Technology
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LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
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