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| 型號(hào)： | TLE2426Y |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | THE RAIL SPLITTER PRECISION VIRTUAL GROUND |
| 中文描述： | 鐵路分配器精密的虛擬地 |
| 文件頁(yè)數(shù)： | 1/22頁(yè) |
| 文件大小： | 344K |
| 代理商： | TLE2426Y |
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TLE2426, TLE2426Y
THE “RAIL SPLITTER”
PRECISION VIRTUAL GROUND
SLOS098D – AUGUST 1991 – REVISED MAY 1998
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
1/2 V
I
Virtual Ground for Analog Systems
Self-Contained 3-terminal TO-226AA
Package
Micropower Operation . . . 170
μ
A Typ,
V
I
= 5 V
Wide V
I
Range . . . 4 V to 40 V
High Output-Current Capability
– Source . . . 20 mA Typ
– Sink . . . 20 mA Typ
Excellent Output Regulation
– –45
μ
V Typ at I
O
= 0 to –10 mA
– +15
μ
V Typ at I
O
= 0 to +10 mA
Low-Impedance Output . . . 0.0075
Typ
Noise Reduction Pin (D, JG, and P
Packages Only)
description
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. Texas
Instruments 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
μ
A
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. The performance and precision of the TLE2426 is available in an easy-to-use, space saving,
3-terminal LP package. For increased performance, the optional 8-pin packages provide 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.
Initial output tolerance for a single 5-V or 12-V system is better than 1% with 3.6% 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.
AVAILABLE OPTIONS
PACKAGED DEVICES
CHIP
FORM
(Y)
TA
SMALL
OUTLINE
(D)
CERAMIC
DIP
(JG)
PLASTIC
(LP)
PLASTIC
DIP
(P)
0
°
C to 70
°
C
–40
°
C to 85
°
C
–55
°
C to 125
°
C
The D and LP packages are available taped and reeled in the commercial temperature range only. Add R suffix
to the device type (e. g., TLC2426CDR). Chips are tested at 25
°
C.
TLE2426CD
—
TLE2426CLP
TLE2426CP
TLE2426ID
—
TLE2426ILP
TLE2426IP
TLE2426Y
TLE2426MD
TLE2426MJG
TLE2426MLP
TLE2426MP
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
1998, Texas Instruments Incorporated
VO
VI
4
2
0
8
6
0
0.25
0.5
0.75
1
V
t – Time – s
INPUT/OUTPUT TRANSFER CHARACTERISTICS
10
VO
VI
2
VI
VO
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