TLE2426-Q1 Automotive Rail Splitter Precision Virtual Ground | TI.com

TLE2426-Q1
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Automotive Rail Splitter Precision Virtual Ground

Automotive Rail Splitter Precision Virtual Ground - TLE2426-Q1
Datasheet
 

Description

In signal-conditioning applications utilizing a single power source, a reference voltage equal to one-half the supply voltage is required for termination of all analog signal grounds. Texas Instruments presents a precision virtual ground whose output voltage is always equal to one-half the input voltage, the TLE2426 rail splitter.

The unique combination of a high-performance, micropower operational amplifier and a precision-trimmed divider on a single silicon chip results in a precise VO/VI ratio of 0.5 while sinking and sourcing current. The TLE2426 provides a low-impedance output with 20 mA of sink and source capability while drawing less than 280 µA of supply current over the full input range of 4 V to 40 V. A designer need not pay the price in terms of board space for a conventional signal ground consisting of resistors, capacitors, operational amplifiers, and voltage references. For increased performance, the 8-pin package provides a noise-reduction pin. With the addition of an external capacitor (CNR), peak-to-peak noise is reduced while line ripple rejection is improved.

Initial output tolerance for a single 5-V or 12-V system is better than 1% over the full 40-V input range. Ripple rejection exceeds 12 bits of accuracy. Whether the application is for a data acquisition front end, analog signal termination, or simply a precision voltage reference, the TLE2426 eliminates a major source of system error.

Features

  • Qualified for Automotive Applications
  • 1/2 VI Virtual Ground for Analog Systems
  • Micropower Operation . . . 170 µA Typ, VI = 5 V
  • Wide VI Range . . . 4 V to 40 V
  • High Output-Current Capability
    • Source . . . 20 mA Typ
    • Sink . . . 20 mA Typ
  • Excellent Output Regulation
    • –102 µV Typ at IO = 0 to –10 mA
    • +49 µV Typ at IO = 0 to +10 mA
  • Low-Impedance Output . . . 0.0075 Typ
  • Noise Reduction Pin

Parametrics

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Part number Order Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Rating
TLE2426 Order now -55 to 125     PDIP | 8
SOIC | 8
TO-92 | 3    
8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
3TO-92: 19 mm2: 3.68 x 5.2 (TO-92 | 3)    
Catalog    
TLE2426-EP Samples not available -55 to 125     SOIC | 8     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)     HiRel Enhanced Product