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TI-TLE2425.pdf
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TI-TLE2425.pdf
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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 I
O
= 0 to −10 mA
+15 µV Typ at I
O
= 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
T
A
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
!"# $%
$ ! ! & '
$$ ()% $ !* $ #) #$
* ## !%
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.
V) − Output Voltage Change − µ V
80
−20
0
20
60
40
−40
−60
−80
−100
108−2 0 2
6
4−4−6−8
−10
100
OUTPUT REGULATION
I
O
− Output Current − mA
V
I
= 5 V
T
A
= −55°C
T
A
= 25°C
T
A
= 125°C
∆V
O
T
A
= −40°C
T
A
= 125°C
T
A
= −55°C
T
A
= 0°C
T
A
= 25°C
![](https://csdnimg.cn/release/download_crawler_static/87239980/bg2.jpg)
SLOS065D − MARCH 1991 − REVISED APRIL 2002
2
WWW.TI.COM
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
1
2
3
4
8
7
6
5
OUT
COMMON
IN
NC
NC
NC
NC
NC
D, OR JG PACKAGE
(TOP VIEW)
NC − No internal connection
OUT
IN
COMMON
LP PACKAGE
(TOP VIEW)
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Continuous input voltage, V
I
40 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current, I
O
±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, T
A
: C-suffix 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I-suffix −40°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
M-suffix −55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
−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.
DISSIPATION RATING TABLE
PACKAGE
T
A
≤ 25°C DERATING FACTOR T
A
= 70°C T
A
= 85°C T
A
= 125°C
PACKAGE
T
A
≤ 25 C
POWER RATING
DERATING FACTOR
ABOVE T
A
= 25°C
T
A
= 70 C
POWER RATING
T
A
= 85 C
POWER RATING
T
A
= 125 C
POWER RATING
D 725 mV 5.8 mW/°C 464 mW 377 mW 145 mW
JG 1050 mV 8.4 mW/°C 672 mW 546 mW 210 mW
LP 775 mV 6.2 mW/°C 496 mW 403 mW 155 mW
recommended operating conditions
C-SUFFIX I-SUFFIX M-SUFFIX
UNIT
MIN MAX MIN MAX MIN MAX
UNIT
Input voltage, V
I
4 40 4 40 4 40 V
Operating free-air temperature, T
A
0 70 −40 85 −55 125 °C
![](https://csdnimg.cn/release/download_crawler_static/87239980/bg3.jpg)
SLOS065D − MARCH 1991 − REVISED APRIL 2002
3
WWW.TI.COM
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
electrical characteristics at specified free-air temperature, V
I
= 5 V, I
O
= 0 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
T
A
†
TLE2425C
UNIT
PARAMETER
TEST CONDITIONS
T
A
†
MIN TYP MAX
UNIT
Output voltage
25°C 2.48 2.5 2.52
V
Output voltage
Full range 2.47 2.53
V
Temperature coefficient of output voltage 25°C 20 ppm/°C
Bias current
I
O
= 0
25°C 170 250
A
Bias current I
O
= 0
Full range 250
µA
V
I
= 4.5 V to 5.5 V
25°C 1.5 20
V
Input voltage regulation
V
I
= 4.5 V to 5.5 V
Full range 25
µV
Input voltage regulation
V
I
= 4 V to 40 V
25°C 1.5 20
V/V
V
I
= 4 V to 40 V
Full range 25
µV/V
Ripple rejection f = 120 Hz, ∆V
I(PP)
= 1 V 25°C 80 dB
I
O
= 0 to −10 mA
25°C −160 −45 160
Output voltage regulation (source current)
‡
I
O
= 0 to −10 mA
Full range −250 250
µV
Output voltage regulation (source current)
‡
I
O
= 0 to −20 mA 25°C −450 −150 450
µV
I
O
= 0 to 10 mA
25°C −160 15 160
Output voltage regulation (sink current)
‡
I
O
= 0 to 10 mA
Full range −250 250
µV
Output voltage regulation (sink current)
‡
I
O
= 0 to 20 mA 25°C −235 65 235
µV
Long-term drift of output voltage ∆t = 1000 h, Noncumulative 25°C 15 ppm
Output impedance 25°C 7.5 22.5 mΩ
Short-circuit output current (sink current) V
O
= 5 V
25°C
30 55
mA
Short-circuit output current (source current) V
O
= 0
25°C
−30 −50
mA
Output noise voltage, rms f = 10 Hz to 10 kHz 25°C 100 µV
V
O
to 0.1%,
C
L
= 0 110
Output voltage response to output current step
V
O
to 0.1%,
I
O
= ± 10 mA
C
L
= 100 pF
25°C
115
s
Output voltage response to output current step
V
O
to 0.01%,
C
L
= 0
25°C
180
µs
V
O
to 0.01%,
I
O
= ± 10 mA
C
L
= 100 pF 180
Output voltage response to input voltage step
V
I
= 4.5 to 5.5 V, V
O
to 0.1%
25°C
12
s
Output voltage response to input voltage step
V
I
= 4.5 to 5.5 V, V
O
to 0.01%
25°C
30
µs
Output voltage turn-on response
V
I
= 0 to 5 V, V
O
to 0.1%
25°C
125
s
Output voltage turn-on response
V
I
= 0 to 5 V, V
O
to 0.01%
25°C
210
µs
†
Full range is 0°C to 70°C.
‡
The listed values are not production tested.
![](https://csdnimg.cn/release/download_crawler_static/87239980/bg4.jpg)
SLOS065D − MARCH 1991 − REVISED APRIL 2002
4
WWW.TI.COM
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
electrical characteristics at specified free-air temperature, V
I
= 5 V, I
O
= 0 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
T
A
†
TLE2425I
UNIT
PARAMETER
TEST CONDITIONS
T
A
†
MIN TYP MAX
UNIT
Output voltage
25°C 2.48 2.5 2.52
V
Output voltage
Full range 2.47 2.53
V
Temperature coefficient of output voltage 25°C 20 ppm/°C
Bias current
I
O
= 0
25°C 170 250
A
Bias current I
O
= 0
Full range 250
µA
V
I
= 4.5 V to 5.5 V
25°C 1.5 20
V
Input voltage regulation
V
I
= 4.5 V to 5.5 V
Full range 75
µV
Input voltage regulation
V
I
= 4 V to 40 V
25°C 1.5 20
V/V
V
I
= 4 V to 40 V
Full range 75
µV/V
Ripple rejection f = 120 Hz, ∆V
I(PP)
= 1 V 25°C 80 dB
I
O
= 0 to −10 mA
25°C −160 −45 160
Output voltage regulation (source current)
‡
I
O
= 0 to −10 mA
Full range −250 250
µV
Output voltage regulation (source current)
‡
I
O
= 0 to −20 mA 25°C −450 −150 450
µV
I
O
= 0 to 8 mA
25°C −160 15 160
Output voltage regulation (sink current)
‡
I
O
= 0 to 8 mA
Full range −250 250
µV
Output voltage regulation (sink current)
‡
I
O
= 0 to 20 mA 25°C −235 65 235
µV
Long-term drift of output voltage ∆t = 1000 h, Noncumulative 25°C 15 ppm
Output impedance 25°C 7.5 22.5 mΩ
Short-circuit output current (sink current) V
O
= 5 V
25°C
30 55
mA
Short-circuit output current (source current) V
O
= 0
25°C
−30 −50
mA
Output noise voltage, rms f = 10 Hz to 10 kHz 25°C 100 µV
V
O
to 0.1%,
C
L
= 0 110
Output voltage response to output current step
V
O
to 0.1%,
I
O
= ± 10 mA
C
L
= 100 pF
25°C
115
s
Output voltage response to output current step
V
O
to 0.01%,
C
L
= 0
25°C
180
µs
V
O
to 0.01%,
I
O
= ± 10 mA
C
L
= 100 pF 180
Output voltage response to input voltage step
V
I
= 4.5 to 5.5 V, V
O
to 0.1%
25°C
12
s
Output voltage response to input voltage step
V
I
= 4.5 to 5.5 V, V
O
to 0.01%
25°C
30
µs
Output voltage turn-on response
V
I
= 0 to 5 V, V
O
to 0.1%
25°C
125
s
Output voltage turn-on response
V
I
= 0 to 5 V, V
O
to 0.01%
25°C
210
µs
†
Full range is −40°C to 85°C.
‡
The listed values are not production tested.
![](https://csdnimg.cn/release/download_crawler_static/87239980/bg5.jpg)
SLOS065D − MARCH 1991 − REVISED APRIL 2002
5
WWW.TI.COM
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
electrical characteristics at specified free-air temperature, V
I
= 5 V, I
O
= 0 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
T
A
†
TLE2425M
UNIT
PARAMETER
TEST CONDITIONS
T
A
†
MIN TYP MAX
UNIT
Output voltage
25°C 2.48 2.5 2.52
V
Output voltage
Full range 2.47 2.53
V
Temperature coefficient of output voltage 25°C 20 ppm/°C
Bias current
I
O
= 0
25°C 170 250
A
Bias current I
O
= 0
Full range 250
µA
V
I
= 4.5 V to 5.5 V
25°C 1.5 20
V
Input voltage regulation
V
I
= 4.5 V to 5.5 V
Full range 100
µV
Input voltage regulation
V
I
= 4.5 V to 40 V
25°C 1.5 20
V/V
V
I
= 4.5 V to 40 V
Full range 100
µV/V
Ripple rejection f = 120 Hz, ∆V
I(PP)
= 1 V 25°C 80 dB
I
O
= 0 to −10 mA
25°C −160 −45 160
Output voltage regulation (source current)
‡
I
O
= 0 to −10 mA
Full range −250 250
µV
Output voltage regulation (source current)
‡
I
O
= 0 to −20 mA 25°C −450 −150 450
µV
I
O
= 0 to 3 mA
25°C −160 15 160
Output voltage regulation (sink current)
‡
I
O
= 0 to 3 mA
Full range −250 250
µV
Output voltage regulation (sink current)
‡
I
O
= 0 to 20 mA 25°C −235 65 235
µV
Long-term drift of output voltage ∆t = 1000 h, Noncumulative 25°C 15 ppm
Output impedance 25°C 7.5 22.5 mΩ
Short-circuit output current (sink current) V
O
= 5 V
25°C
30 55
mA
Short-circuit output current (source current) V
O
= 0
25°C
−30 −50
mA
Output noise voltage, rms f = 10 Hz to 10 kHz 25°C 100 µV
V
O
to 0.1%,
C
L
= 0 110
Output voltage response to output current step
V
O
to 0.1%,
I
O
= ± 10 mA
C
L
= 100 pF
25°C
115
s
Output voltage response to output current step
V
O
to 0.01%,
C
L
= 0
25°C
180
µs
V
O
to 0.01%,
I
O
= ± 10 mA
C
L
= 100 pF 180
Output voltage response to input voltage step
V
I
= 4.5 to 5.5 V, V
O
to 0.1%
25°C
12
s
Output voltage response to input voltage step
V
I
= 4.5 to 5.5 V, V
O
to 0.01%
25°C
30
µs
Output voltage turn-on response
V
I
= 0 to 5 V, V
O
to 0.1%
25°C
125
µs
Output voltage turn-on response
V
I
= 0 to 5 V, V
O
to 0.01%
25
°
C
210
µ
s
†
Full range is −55°C to 125°C.
‡
The listed values are not production tested.
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