EL2140C/2141C
150 MHz Differential Twisted Pair Driver
Features
# Fully differential inputs, outputs,
and feedback
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.
g
# Differential input range 2.3V
# 150 MHz 3 dB bandwidth
# 800 V/ms slew rate
b
b
g
#
#
#
55 dB distortion at 3 MHz
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.
75 dB distortion at 100 kHz
a
5V supplies or 6V single
supply
# 50 mA minimum output current
The output common mode level is set by the reference pin
b
erally, this pin is grounded, but it can be tied to any voltage
reference.
# Output swing (200X load) to
within 1.5V of supplies
(14V pk-pk differential)
(V
REF
), which has a 3 dB bandwidth of over 100 MHz. Gen-
# Low power-11 mA typical supply
current
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.)
Applications
# Twisted pair driver
# Differential line driver
# VGA over twisted pair
# ADSL/HDSL driver
Both outputs (V
, V
withstand temporary overload condition.
) are short circuit protected to
OUTB
OUT
# Single ended to differential
amplification
Connection Diagrams
# Transmission of analog signals in
a noisy environment
EL2140C
EL2141C
Ordering Information
Ý
Part No.
EL2140CN
EL2140CS
EL2141CN
EL2141CS
Temp. Range
Package Outline
b
a
40 C to 85 C 8-pin PDIP MDP0031
§
§
40 C to 85 C 8-pin SOIC MDP0027
b
b
b
a
§
§
40 C to 85 C 8-pin PDIP MDP0031
a
§
§
40 C to 85 C 8-pin SOIC MDP0027
a
§
§
2140-1
2140-2
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.