Datasheet

EL1508
Differential DSL Line Driver

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Typical Diagram

Key Features

450mA output drive capability
43.6V_P-P differential output drive into 100Ω
2nd/3rd harmonics of -85dBc/-75dBc
MTPR of -70dB
Operates down to 3mA per amplifier supply current
Power control features
Pin-compatible with EL1503
Pb-free plus anneal available (RoHS compliant)

Description

The EL1508 is designed for driving full rate ADSL signals in both CO and CPE applications at very low power dissipation. The high drive capability of 450mA makes this driver ideal for both CAP and DMT designs. It contains two wideband, high-voltage, current mode feedback amplifiers with a number of power dissipation reduction features.

These drivers achieve an MTPR distortion measurement of better than 70dB, while consuming typically 6mA of total supply current. This supply current can be set using a resistor on the I_ADJ pin. Two other pins (C₀ and C₁) can also be used to adjust supply current to one of four pre-set modes (full-I_S, 2/3-I_S, 1/3-I_S, and full power-down). The EL1508 operates on ±5V to ±12V supplies and retains its bandwidth and linearity over the complete supply range.

The device is supplied in a thermally-enhanced 20 Ld SOIC (0.300"), a thermally-enhanced 16 Ld SOIC (0.150"), and the small footprint (4x5mm) 24 Ld QFN packages. The EL1508 is specified for operation over the full -40°C to +85°C temperature range.