The EL1503 ADSL Line Driver contains two wideband highvoltage
drivers which are ideally suited for both ADSL and
HDSL2 applications. They can supply a 39.2VP-P signal into
a 22Ω load while exhibiting very low distortion. The EL1503
also has a number of power saving features. The IADJ pin
can be used to set the maximum supply current and the C0
and C1 pins can be used to digitally vary the supply current
to one of four modes. These modes include full power, low
power, terminate only and power down.
The EL1503 uses current-feedback type amplifiers, which
achieve a high slew rate while consuming moderate power.
They retain their frequency response over a wide range of
externally set gains. The EL1503 operates on ±5V to ±12V
supplies and consumes only 12.5mA per amplifier.
The device is supplied in a standard form-factor 20-pin SO
(0.300”), 16-pin thermal SO (0.150”), and the small footprint
(4x5mm) 24-pin LPP packages. Center pins on each side of
the 20-pin and 16-pin packages are used as ground
connections and heat spreaders. The LPP package has the
potential for a low θJA (<40°C/W) and dissipates heat by
means of a thermal pad that is soldered onto the PCB. All
package options are specified for operation over the full
-40°C to +85°C temperature range.