EL2140C 2141C
EL2140C 2141C
150 MHz Differential Twisted Pair Driver
Features
Fully differential inputs outputs
and feedback
Differential input range
g
2 3V
150 MHz 3 dB bandwidth
800 V
ms
slew rate
b
55 dB distortion at 3 MHz
b
75 dB distortion at 100 kHz
g
5V supplies or
a
6V single
supply
50 mA minimum output current
Output swing (200X load) to
within 1 5V of supplies
(14V pk-pk differential)
Low power-11 mA typical supply
current
General Description
The EL2140C 2141C is a very high bandwidth amplifier whose
output is in differential form and is thus primarily targeted for
applications such as driving twisted pair lines or any applica-
tion where common mode injection is likely to occur The input
signal can be in either single-ended or differential form but the
output is always in differential form
On the EL2141C two feedback inputs provide the user with the
ability to set the device gain (stable at minimum gain of two)
whereas the EL2140C comes with a fixed gain of two
The output common mode level is set by the reference pin
(V
REF
) which has a
b
3 dB bandwidth of over 100 MHz Gen-
erally this pin is grounded but it can be tied to any voltage
reference
The transmission of ADSL HDSL signals requires very low
distortion amplification so this amplifier was designed with
this as a primary goal The actual signal distortion levels de-
pend upon input and output signal amplitude as well as the
output load impedance (See distortion data inside )
Both outputs (V
OUT
V
OUTB
) are short circuit protected to
withstand temporary overload condition
Applications
Twisted pair driver
Differential line driver
VGA over twisted pair
ADSL HDSL driver
Single ended to differential
amplification
Transmission of analog signals in
a noisy environment
Connection Diagrams
EL2140C
EL2141C
Ordering Information
Part No
Temp Range
Package
Outline
EL2140CN
b
40 C to
a
85 C 8-pin PDIP MDP0031
EL2140CS
b
40 C to
a
85 C 8-pin SOIC
MDP0027
EL2141CN
b
40 C to
a
85 C 8-pin PDIP MDP0031
EL2141CS
b
40 C to
a
85 C 8-pin SOIC
MDP0027
2140-1
2140-2
October 1995 Rev A
Note
All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication however this data sheet cannot be a ‘‘controlled document’’ Current revisions if any to these
specifications are maintained at the factory and are available upon your request We recommend checking the revision level before finalization of your design documentation
1995 Elantec Inc
ELANTEC [ ELANTEC SEMICONDUCTOR ]
