EL2141
150MHz Differential Twisted Pair Driver
Not Recommended for New Designs.
Recommended Replacement Part EL5171.
Typical Diagram
Key Features
- Fully differential inputs, outputs, and feedback
- Differential input range ±2.3V
- 150MHz 3dB bandwidth
- 800V/µs slew rate
- -55dB distortion at 3MHz
- -75dB distortion at 100kHz
- ±5V supplies or +6V single supply
- 50mA minimum output current
- Output swing (200Ω load) to within 1.5V of supplies (14VPKPK differential)
- Low power-11mA typical supply current
- Pb-free available (RoHS compliant)
Description
The EL2141 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 application 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 EL2141, two feedback inputs provide the user with the ability to set the device gain, (stable at minimum gain of two).
The output common mode level is set by the reference pin (VREF), which has a -3dB bandwidth of over 100MHz. Generally, 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 depend upon input and output signal amplitude, as well as the output load impedance. (See distortion data inside.)
Both outputs (VOUT, VOUTB) 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
