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ꢇꢈꢂ ꢌꢊꢋ ꢊꢍ ꢎ ꢏꢊ ꢈꢀ ꢐꢉꢁ ꢑ ꢈꢍ ꢐ ꢎ ꢒ
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SGLS345 − JUNE 2006
D
Controlled Baseline
− One Assembly/Test Site, One Fabrication
Site
D
Excellent Output Regulation
− −102 µV Typ at I = 0 mA to −10 mA
O
− 49 µV Typ at I = 0 mA to 10 mA
O
D
D
D
D
D
Extended Temperature Performance of
−55°C to 125°C
Enhanced Diminishing Manufacturing
Sources (DMS) Support
D
D
Low-Impedance Output . . . 0.0075 Ω Typ
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.
Enhanced Product-Change Notification
†
Qualification Pedigree
One-Half V Virtual Ground for Analog
I
Systems
D
Micropower Operation . . . 170 µA Typ,
I
D PACKAGE
(TOP VIEW)
V = 5 V
D
Wide V Range . . . 4 V to 40 V
I
OUT
COMMON
IN
NOISE REDUCTION
1
2
3
4
8
7
6
5
D
High Output-Current Capability
− Source . . . 20 mA Typ
− Sink . . . 20 mA Typ
NC
NC
NC
−
NC
description/ordering information
NC − No internal connection
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.
INPUT/OUTPUT TRANSFER CHARACTERISTICS
10
V
I
V
I
V
O
V
I
V
+
8
6
4
O
2
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 /V ratio of 0.5 while sinking and
O
I
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
V
O
2
0
0
0.25
0.5
t − Time − s
0.75
1
external capacitor (C ), peak-to-peak noise is
NR
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.
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.
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Copyright 2006 Texas Instruments Incorporated
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1
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