Virtual Ground. TLE2425 Datasheet

TLE2425 Ground. Datasheet pdf. Equivalent

Part TLE2425
Description Precision Virtual Ground
Feature ąą D 2.5-V Virtual Ground for 5-V/GND Analog Systems D High Output-Current Capability Sink or Source.
Manufacture etcTI
Datasheet
Download TLE2425 Datasheet



TLE2425
ąą
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
TLE2425
PRECISION VIRTUAL GROUND
ą
SLOS065D − MARCH 1991 − REVISED APRIL 2002
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 Typ
D Macromodel Included
description
OUTPUT REGULATION
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.
100
VI = 5 V
80
60
TA = − 40°C
40
TA = 0°C
TA = − 55°C
20
0
TA = 25°C
− 20
TA = 125°C
TA = 25°C
− 40
− 60
TA = 125°C
− 80
TA = − 55°C
− 100
−10 −8 −6 −4 −2 0 2 4 6
IO − Output Current − mA
8 10
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).
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.
Copyright 2002, Texas Instruments Incorporated
WWW.TI.COM
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
1



TLE2425
TLE2425
PRECISION VIRTUAL GROUND
ą
SLOS065D − MARCH 1991 − REVISED APRIL 2002
D, OR JG PACKAGE
(TOP VIEW)
OUT 1
COMMON 2
IN 3
NC 4
8 NC
7 NC
6 NC
5 NC
ą
LP PACKAGE
(TOP VIEW)
IN
COMMON
OUT
NC − No internal connection
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Continuous input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±80 mA
Duration of short-circuit current at (or below) 25°C (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . unlimited
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, TA: C-suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
I-suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to 85°C
M-suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D package . . . . . . . . . . . . . . . . . . . . . 260°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: JG or LP package . . . . . . . . . . . . . . 300°C
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: The output may be shorted to either supply. Temperature and/or supply voltages must be limited to ensure that the maximum dissipation
rating is not exceeded.
PACKAGE
D
JG
LP
TA 25°C
POWER RATING
725 mV
1050 mV
775 mV
DISSIPATION RATING TABLE
DERATING FACTOR
ABOVE TA = 25°C
5.8 mW/°C
TA = 70°C
POWER RATING
464 mW
8.4 mW/°C
672 mW
6.2 mW/°C
496 mW
TA = 85°C
POWER RATING
377 mW
546 mW
403 mW
TA = 125°C
POWER RATING
145 mW
210 mW
155 mW
recommended operating conditions
Input voltage, VI
Operating free-air temperature, TA
C-SUFFIX
MIN MAX
4
40
0
70
I-SUFFIX
MIN MAX
4
40
−40 85
M-SUFFIX
MIN MAX
4
40
−55 125
UNIT
V
°C
2
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POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443





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