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TLE2425MDRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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TLE2425MDRG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 22 page TLE2425 PRECISION VIRTUAL GROUND SLOS065D − MARCH 1991 − REVISED APRIL 2002 1 WWW.TI.COM POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 D 2.5-V Virtual Ground for 5-V/GND Analog Systems D High Output-Current Capability Sink or Source . . . 20 mA Typ D Micropower Operation . . . 170 µA Typ D Excellent Regulation Characteristics − Output Regulation −45 µV Typ at IO = 0 to −10 mA +15 µV Typ at IO = 0 to +10 mA − Input Regulation = 1.5 µV/V Typ D Low-Impedance Output . . . 0.0075 Ω Typ D Macromodel Included description In signal-conditioning applications using a single power source, a reference voltage is required for termination of all signal grounds. To accomplish this, engineers have typically used solutions consisting of resistors, capacitors, operational amplifiers, and voltage references. Texas Instru- ments has eliminated all of those components with one easy-to-use 3-terminal device. That device is the TLE2425 precision virtual ground. Use of the TLE2425 over other typical circuit solutions gives the designer increased dynamic signal range, improved signal-to-noise ratio, lower distortion, improved signal accuracy, and easier interfacing to ADCs and DACs. These benefits are the result of combining a precision micropower voltage reference and a high-perfor- mance precision operational amplifier in a single silicon chip. It is the precision and performance of these two circuit functions together that yield such dramatic system-level performance. The TLE2425 improves input regulation as well as output regulation and, in addition, reduces output impedance and power dissipation in a majority of virtual-ground-generation circuits. Both input regulation and load regulation exceed 12 bits of accuracy on a single 5-V system. Signal-conditioning front ends of data acquisition systems that push 12 bits and beyond can use the TLE2425 to eliminate a major source of system error. AVAILABLE OPTIONS TA SMALL OUTLINE (D) PLASTIC TO-226AA (LP) 0 °C to 70°C TLE2425CD TLE2425CD −40 °C to 85°C TLE2425ID TLE2425ID −55 °C to 125°C TLE2425MD — † The D package is available taped and reeled. Add R suffix to the device type (e.g., TLE2425CDR). Copyright 2002, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 80 −20 0 20 60 40 −40 −60 −80 − 100 10 8 −2 0 2 6 4 −4 −6 −8 −10 100 OUTPUT REGULATION IO − Output Current − mA VI = 5 V TA = − 55°C TA = 25°C TA = 125°C TA = − 40°C TA = 125°C TA = − 55°C TA = 0°C TA = 25°C |
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