TLE2426-EP Datasheet, PDF (1/15 Pages) Texas Instruments – RAIL SPLITTER PRECISION VIRTUAL GROUND

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TLE2426ĆEP
RAIL SPLITTER
PRECISION VIRTUAL GROUND
SGLS345 − JUNE 2006
D Controlled Baseline
− One Assembly/Test Site, One Fabrication
Site
D Extended Temperature Performance of
−55°C to 125°C
D Enhanced Diminishing Manufacturing
Sources (DMS) Support
D Enhanced Product-Change Notification
D Qualification Pedigree^†
D One-Half V_I Virtual Ground for Analog
Systems
D Micropower Operation . . . 170 µA Typ,
V_I = 5 V
D Wide V_I Range . . . 4 V to 40 V
D High Output-Current Capability
− Source . . . 20 mA Typ
− Sink . . . 20 mA Typ
−
description/ordering information
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. TI
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 V_O/V_I 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 (C_NR), peak-to-peak noise is
reduced, while line ripple rejection is improved.
D Excellent Output Regulation
− −102 µV Typ at I_O = 0 mA to −10 mA
− 49 µV Typ at I_O = 0 mA to 10 mA
D Low-Impedance Output . . . 0.0075 Ω Typ
D Noise Reduction Pin
† _{Component qualification in accordance with JEDEC and industry}
standards to ensure reliable operation over an extended
temperature range. This includes, but is not limited to, Highly
Accelerated Stress Test (HAST) or biased 85/85, temperature
cycle, autoclave or unbiased HAST, electromigration, bond
intermetallic life, and mold compound life. Such qualification
testing should not be viewed as justifying use of this component
beyond specified performance and environmental limits.
D PACKAGE
(TOP VIEW)
OUT 1
COMMON 2
IN 3
NC 4
8 NOISE REDUCTION
7 NC
6 NC
5 NC
NC − No internal connection
INPUT/OUTPUT TRANSFER CHARACTERISTICS
10
VI
8
VI
VO
VO
+
VI
2
6
4
VO
2
0
0
0.25
0.5
0.75
1
t − Time − s
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.
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.
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright  2006 Texas Instruments Incorporated
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