TLE2426, TLE2426Y

THE “RAIL SPLITTER”

PRECISION VIRTUAL GROUND

SLOS098D – AUGUST 1991 – REVISED MAY 1998

1

POST OFFICE BOX 655303

Package

– Source...20 mA Typ

– Sink...20 mA Typ

– – 45

– +15

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

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. 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.

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

TA

SMALL

OUTLINE

(D)

CERAMIC

DIP

(JG)

PLASTIC

(LP)

PLASTIC

DIP

(P)

CHIP

FORM

(Y)

0

°C to 70°C

TLE2426CD

—

TLE2426CLP

TLE2426CP

–40

°C to 85°C

TLE2426ID

—

TLE2426ILP

TLE2426IP

TLE2426Y

–55

°C to 125°C

TLE2426MD

TLE2426MJG

TLE2426MLP

TLE2426MP

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.

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

t – Time – s

INPUT/OUTPUT TRANSFER CHARACTERISTICS

10

V

O +

V

I

2

VI

VO