TLE2426-EP [TI]
RAIL SPLITTER PRECISION VIRTUAL GROUND; 电源分路器精密虚拟地
| 型号： | TLE2426-EP |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | RAIL SPLITTER PRECISION VIRTUAL GROUND |
| 文件： | 总15页 (文件大小：546K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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ꢈꢉꢊ ꢁ ꢋ ꢇꢁ ꢊꢀ ꢀꢂ ꢈ
ꢇꢈꢂ ꢌꢊꢋ ꢊꢍ ꢎ ꢏꢊ ꢈꢀ ꢐꢉꢁ ꢑ ꢈꢍ ꢐ ꢎ ꢒ
ꢓ
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
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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ꢓ
SGLS345 − JUNE 2006
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
T
A
PACKAGE
−55°C to 125°C
SOIC (D)
Tape and reel
TLE2426MDREP
2426EP
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.
†
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Continuous input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
I
Continuous filter trap voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Output current, I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 mA
O
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C
A
Operating junction temperature, T (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
J
Storage temperature range, T (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
stg
Lead temperature 1,6 mm (1/16 in) from case for 10 s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°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.
NOTES: 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.
2. Long-term high-temperature storage and/or usage at the absolute maximum ratings may result in a reduction of overall device life.
See http://www.ti.com/ep_quality for additional information on enhanced plastic packaging.
DISSIPATION RATING TABLE
T
≤ 25°C
DERATING FACTOR
T
= 70°C
T
= 85°C
T = 125°C
A
A
A
A
PACKAGE
POWER RATING
ABOVE T = 25°C
POWER RATING POWER RATING POWER RATING
A
D
1102 mV
10.3 mW/°C
638.5 mW
484 mW
72.1 mW
recommended operating conditions
MIN
4
MAX
UNIT
V
Input voltage, V
40
I
Operating free-air temperature, T
−55
125
°C
A
2
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ꢓ
SGLS345 − JUNE 2006
electrical characteristics at specified free-air temperature, V = 5 V, I = 0 (unless otherwise noted)
I
O
†
PARAMETER
TEST CONDITIONS
MIN
1.98
TYP
2
MAX
2.02
T
A
UNIT
V = 4 V
I
V = 5 V
I
2.48
2.5
20
2.52
25°C
Output voltage
V
V = 40 V
I
19.8
20.2
V = 5 V
I
Full range
Full range
2.465
2.535
Temperature coefficient of output
voltage
25
ppm/°C
µA
V = 5 V
25°C
25°C
170
300
350
400
0.7
10
I
Supply current
No load
V = 4 to 40 V
I
Full range
25°C
−0.102
I
O
= 0 to −10 mA
Output voltage regulation
Full range
25°C
mV
mV
‡
(sourcing current)
I
O
I
O
I
O
I
O
= 0 to −20 mA
= 0 to 10 mA
= 0 to 8 mA
−0.121
0.049
1.4
0.5
10
25°C
Output voltage regulation
Full range
25°C
‡
(sinking current)
= 0 to 20 mA
0.175
7.5
1.4
22.5
‡
Output impedance
25°C
mΩ
kΩ
Noise-reduction impedance
25°C
110
26
Sinking current, V = 5 V
O
Short-circuit current
25°C
25°C
25°C
25°C
25°C
mA
Sourcing current, V = 0
O
−47
120
30
C
C
C
C
C
C
= 0
NR
NR
Output noise voltage, rms
Output voltage current step response
Step response
f = 10 Hz to 10 kHz
µV
= 1 µF
= 0
290
275
400
390
20
L
L
L
L
V
V
to 0.1%, I
=
10 mA
10 mA
O
O
= 100 pF
= 0
µs
µs
to 0.01%, I
=
O
O
= 100 pF
V = 0 to 5 V, V to 0.1%
I
O
C
= 100 pF
L
V = 0 to 5 V, V to 0.01%
I
120
O
†
‡
Full range is −55°C to 125°C.
The listed values are not production tested.
3
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ꢓ
SGLS345 − JUNE 2006
electrical characteristics at specified free-air temperature, V = 12 V, I = 0 (unless otherwise noted)
I
O
†
PARAMETER
TEST CONDITIONS
MIN
1.98
TYP
2
MAX
2.02
T
A
UNIT
V = 4 V
I
V = 12 V
I
5.95
6
6.05
25°C
Output voltage
V
V = 40 V
I
19.8
20
20.2
V = 12 V
I
Full range
5.925
6.075
Temperature coefficient of output voltage
Supply current
Full range
25°C
35
ppm/°C
µA
V = 12 V
195
300
350
400
10
I
25°C
No load
V = 4 to 40 V
I
Full range
25°C
−1.48
I
O
= 0 to −10 mA
Output voltage regulation
Full range
25°C
10
mV
mV
‡
(sourcing current)
I
O
I
O
I
O
I
O
= 0 to −20 mA
= 0 to 10 mA
= 0 to 8 mA
−3.9
2.27
10
25°C
10
Output voltage regulation
Full range
25°C
10
‡
(sinking current)
= 0 to 20 mA
4.3
7.5
110
31
10
‡
Output impedance
25°C
22.5
mΩ
kΩ
Noise-reduction impedance
25°C
Sinking current, V = 12 V
O
Short-circuit current
25°C
25°C
25°C
25°C
25°C
mA
Sourcing current, V = 0
O
−70
120
30
C
C
C
C
C
C
= 0
NR
NR
Output noise voltage, rms
Output voltage current step response
Step response
f = 10 Hz to 10 kHz
µV
= 1 µF
= 0
290
275
400
390
12
L
L
L
L
V
to 0.1%, I
=
10 mA
10 mA
O
O
O
= 100 pF
= 0
µs
µs
V
to 0.01%, I
=
O
= 100 pF
V = 0 to 12 V, V to 0.1%
I
O
C
= 100 pF
L
V = 0 to 12 V, V to 0.01%
I
120
O
†
‡
Full range is −55°C to 125°C.
The listed values are not production tested.
4
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SGLS345 − JUNE 2006
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
Output voltage
Distribution
1, 2
3
Output voltage change
Output voltage error
vs Free-air temperature
vs Input voltage
vs Input voltage
vs Free-air temperature
vs Output current
vs Frequency
4
5
Input bias current
6
Output voltage regulation
Output impedance
7
8
vs Input voltage
vs Free-air temperature
vs Frequency
9, 10
11, 12
13
14
15
16
17
Short-circuit output current
Ripple rejection
Spectral noise voltage density
Output voltage response to output current step
Output voltage power-up response
Output current
vs Frequency
vs Time
vs Time
vs Load capacitance
5
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SGLS345 − JUNE 2006
†
TYPICAL CHARACTERISTICS
DISTRIBUTION
OF
DISTRIBUTION
OF
OUTPUT VOLTAGE
OUTPUT VOLTAGE
3
40
30
20
98 Units Tested
From 2 Wafer Lots
98 Units Tested
From 2 Wafer Lots
V = 12 V
I
2.5
2
V = 5 V
I
A
T
A
= 25°C
T
= 25°C
1.5
1
10
0
0.5
0
2.48
2.49
2.5
2.51
2.52
6
6.025
6.05
6.075
6.1
V
O
− Output Voltage − V
V
O
− Output Voltage − V
Figure 1
Figure 2
OUTPUT VOLTAGE ERROR
OUTPUT VOLTAGE CHANGE
vs
vs
INPUT VOLTAGE
FREE-AIR TEMPERATURE
4
3
2
150
75
I
T
= 0
= 25°C
O
A
V = 40 V
I
I
O
= 0
Error Equals V /V Deviation From 50%
O
I
V = 12 V
I
0
V = 4 V, 5 V
I
1
0
−75
−1
−150
0
4
8
12 16 20 24 28 32 36 40
0
25
50
75
100 125
−75 −50 −25
T
A
− Free-Air Temperature − °C
V − Input Voltage − V
I
Figure 3
Figure 4
†
6
Data at high and low temperatures are applicable within the rated operating free-air temperature ranges of the various devices.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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SGLS345 − JUNE 2006
†
TYPICAL CHARACTERISTICS
INPUT BIAS CURRENT
INPUT BIAS CURRENT
vs
vs
INPUT VOLTAGE
FREE-AIR TEMPERATURE
300
250
300
250
200
150
100
50
I
O
= 0
V = 40 V
I
T
= 25°C
A
V = 12 V
I
200
150
100
50
T
A
= −55°C
V = 5 V
I
V = 4 V
I
T
A
= 125°C
I
O
= 0
0
0
0
5
10
15
20
25
30
35
40
−75 −50 −20
0
25
50
75
100 125
V − Input Voltage − V
I
T
A
− Free-Air Temperature − °C
Figure 5
Figure 6
OUTPUT VOLTAGE REGULATION
OUTPUT IMPEDANCE
vs
vs
OUTPUT CURRENT
FREQUENCY
200
150
100
100
10
1
V = 5 V or 12 V
I
V = 5 V
I
I
T
= 0
O
T
= 25°C
A
= 25°C
A
50
TYP
0
−50
0.1
0.01
−100
−150
−200
0.001
10
100
1 k
10 k
100 k
1 M
0
10
20
−20
−10
f − Frequency − Hz
I
O
− Output Current − mA
Figure 7
Figure 8
†
Data at high and low temperatures are applicable within the rated operating free-air temperature ranges of the various devices.
7
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ꢓ
SGLS345 − JUNE 2006
†
TYPICAL CHARACTERISTICS
SHORT-CIRCUIT OUTPUT CURRENT
SHORT-CIRCUIT OUTPUT CURRENT
vs
vs
INPUT VOLTAGE
INPUT VOLTAGE
40
0
V
= GND
O
(Output Sourcing)
T
A
= 25°C
T
= −55°C
−20
A
30
20
T
A
= 125°C
−40
−60
−80
T
= −55°C
A
10
0
V
= V
I
O
(Output Sinking)
T
A
= 125°C
T
= 25°C
A
0
5
10
15
20
25
30
35
40
0
5
10
15
20
25
30
35
40
V − Input Voltage − V
I
V − Input Voltage − V
I
Figure 9
Figure 10
SHORT-CIRCUIT OUTPUT CURRENT
SHORT-CIRCUIT OUTPUT CURRENT
vs
vs
FREE-AIR TEMPERATURE
FREE-AIR TEMPERATURE
0
40
V = 40 V
I
V
= GND
O
V = 4 V
−10
−20
I
(Output Sourcing)
V = 12 V
I
30
20
V = 5 V
I
−30
−40
V = 4 V
I
V = 5 V
I
−50
−60
V = 12 V
I
10
0
V
O
= V
I
−70
−80
V = 40 V
I
(Output Sinking)
−75 −50 −25
0
25
50
75
100 125
0
25
50
75
100 125
−75 −50 −25
T
A
− Free-Air Temperature − °C
T
A
− Free-Air Temperature − °C
Figure 11
Figure 12
†
8
Data at high and low temperatures are applicable within the rated operating free-air temperature ranges of the various devices.
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ꢓ
SGLS345 − JUNE 2006
TYPICAL CHARACTERISTICS
RIPPLE REJECTION
vs
SPECTRAL NOISE VOLTAGE DENSITY
vs
FREQUENCY
FREQUENCY
400
300
200
100
90
80
70
60
50
40
30
V = 5 V or 12 V
I
V = 5 V or 12 V
I
T
= 25°C
A
∆V
O
T
= 1 V
I(PP)
= 0
C
= 1 µF
NR
I
= 25°C
A
100
0
20
10
0
C
= 0
NR
C
= 0
NR
C
= 1 µF
NR
10
100
1 k
10 k
100 k
1 M
1
10
100
1 k
10 k
100 k
f − Frequency − Hz
f − Frequency − Hz
Figure 13
Figure 14
OUTPUT VOLTAGE RESPONSE
TO OUTPUT CURRENT STEP
OUTPUT VOLTAGE POWER-UP RESPONSE
3
2.5
2
1.5 V
0.1%
Output Voltage Response
0.01%
4
3
2
1
V = 5 V
I
C
= 100 pF
L
T
= 25°C
A
0.1%
1.5
1
I
C
= 0
O
0.01%
= 100 pF
= 25°C
0
L
0.01%
T
A
−1
0.5
−2
−3
10 mA
Step
0
5
0.1%
I
O
Input Voltage Step
−4
−10 mA
0
−1.5 V
0
50
100
150
200
0
1000
2000
Time − µs
3000
4000
Time − µs
Figure 15
Figure 16
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ꢀ ꢁ ꢂꢃ ꢄ ꢃ ꢅ ꢆꢂꢇ
ꢈ ꢉꢊꢁ ꢋꢇ ꢁ ꢊ ꢀ ꢀ ꢂꢈ
ꢇ ꢈꢂ ꢌ ꢊꢋꢊ ꢍꢎ ꢏꢊ ꢈꢀ ꢐꢉ ꢁ ꢑ ꢈꢍꢐ ꢎꢒ
ꢓ
SGLS345 − JUNE 2006
TYPICAL CHARACTERISTICS
STABILITY RANGE
OUTPUT CURRENT
vs
LOAD CAPACITANCE
20
V = 5 V
I
Unstable
15
10
T
= 25°C
A
5
0
Stable
−5
−10
−15
−20
1
2
10
−6 −5
10 10
−4
−2
0
10
−3
−1
10
10
10
10
10
C − Load Capacitance − mF
L
Figure 17
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ꢀ ꢁ ꢂꢃ ꢄꢃ ꢅꢆ ꢂ ꢇ
ꢈꢉꢊ ꢁ ꢋ ꢇꢁ ꢊꢀ ꢀꢂ ꢈ
ꢇꢈꢂ ꢌꢊꢋ ꢊꢍ ꢎ ꢏꢊ ꢈꢀ ꢐꢉꢁ ꢑ ꢈꢍ ꢐ ꢎ ꢒ
ꢓ
SGLS345 − JUNE 2006
MACROMODEL INFORMATION
*
*
*
*
TLE2426 OPERATIONAL AMPLIFIER “MACROMODEL” SUBCIRCUIT
CREATED USING PARTS RELEASE 4.03 0N 08/21/90 AT 13:51
REV (N/A)
SUPPLY VOLTAGE: 5 V
FILTER
CONNECTIONS:
|
|
|
|
1
INPUT
*
*
*
|
|
|
3
COMMON
|
|
4
OUTPUT
|
5
.SUBCKT TLE2426
C1
11 12 21.66E−12
C2
6
7 30.00E−12
C3
CPSR
DCM+ 81 82 DX
DCM− 83 81 DX
DC
DE
DLP
DLN
DP
87 0 10.64E−9
85 86 15.9E−9
5 53 DX
54 5 DX
90 91 DX
92 90 DX
4
3 DX
ECMR
EGND
EPSR
ENSE
FB
84 99 (2,99) 1
99 0 POLY(2)
85 0 POLY(1)
89 2 POLY(1)
7 99 POLY(6)
(3,0) (4,0)
0
.5 .5
(3,4) −16.22E−6 3.24E−6
(88,0) 120E−61
VB VC VE VLPVLNVPSR 0 74.8E6 −10E6 10E6
0 11 12 320.4E−6
10E6
−10E6 74E6
GA
6
GCM
GPSR
GRC1
GRC2
GRE1
GRE2
HLIM
HCMR
IRP
IEE
IIO
I1
0
6 10 99 1.013E−9
85 86 (85,86)
100E−6
4 11 (4,11) 3.204E−4
4 12 (4,12) 3.204E−4
13 10 (13,10)
14 10 (14,10)
1.038E−3
1.038E−3
90 0 VLIM
1K
80 1 POLY(2)
VCM+
VCM−
0
1E2
1E2
3
4 146E−6
3 10 DC 24.05E−6
0 .2E−9
2
88 0 1E−21
11 89 13 QX
12 80 14 QX
Q1
Q2
R2
6
9 100.0E3
RCM
REE
RN1
RN2
RO1
RO2
84 81 1K
10 99 8.316E6
87
0
2.55E8
87 88 11.67E3
5 63
7 99 62
8
VCM+ 82 99 1.0
VCM− 83 99 −2.3
VB
9
0 DC 0
VC
3 53 DC 1.400
54 4 DC 1.400
VE
VLIM
VLP
VLN
VPSR
RFB
RIN1
RIN2
7
8 DC 0
91 0 DC 30
0 92 DC 30
0 86 DC 0
5
3
1
2 1K
1 220K
4 220K
.MODEL DX D(IS=800.OE−18)
.MODEL QX PNP(IS=800.OE−18BF=480)
.ENDS
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PACKAGE MATERIALS INFORMATION
www.ti.com
14-Jul-2012
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0
B0
K0
P1
W
Pin1
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant
(mm) W1 (mm)
TLE2426MDREP
SOIC
D
8
2500
330.0
12.4
6.4
5.2
2.1
8.0
12.0
Q1
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
14-Jul-2012
*All dimensions are nominal
Device
Package Type Package Drawing Pins
SOIC
SPQ
Length (mm) Width (mm) Height (mm)
367.0 367.0 35.0
TLE2426MDREP
D
8
2500
Pack Materials-Page 2
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