The EL1528 is a dual channel differential amplifier designed for driving full rate ADSL signals at very low power dissipation. The high drive capability of 450mA makes this driver ideal for both CAP and DMT designs. It contains two pairs of wideband, high-voltage, current mode feedback amplifiers optimized for low power consumption in DSL systems. These drivers achieve an MTPR distortion measurement of better than 70dB, while consuming typically 5mA per DSL channel of total supply current. This supply current can be set using a resistor on the IADJ pin. Two other pins (C0 & C1) can also be used to adjust supply current to one of four pre- set modes (full-IS, 3/4-IS, 1/2-IS, and full power-down). The EL1528 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-pin HTSSOP and the small footprint (4x5mm) 24-pin QFN packages. The EL1528 is specified for operation over the full -40°C to +85°C temperature range.
The EL1528 is a dual‑channel differential amplifier designed for driving full‑rate ADSL signals with very low power dissipation. It provides up to 450 mA output drive, 44.4 Vpp differential output into 100 Ω, and low distortion (‑75 dBc @ 500 kHz, 16 Vpp). The device operates from +5 V to +12 V supplies and maintains performance across the full supply range.
The part is offered in 20‑pin HTSSOP and 24‑pin QFN packages (4 × 5 mm footprint) and is specified for –40 °C to +85 °C operation. Pin‑based current control allows selection of four preset supply‑current modes, and the device includes electrostatic‑discharge protection handling guidelines.
| Output drive capability | 450 mA |
|---|---|
| Differential output voltage | 44.4 Vpp into 100 Ω |
| THD | -75 dBc @ 500 kHz 16 Vpp |
| MTPR | -70 dB |
| Typical supply current per channel | 5 mA |
| Supply voltage range | +5 V to +12 V |
| Operating temperature range | -40 °C to +85 °C |
| Package options | 20‑pin HTSSOP, 24‑pin QFN (4 × 5 mm) |
| Channel separation | 80 dB @ 500 kHz, 75 dB @ 1 MHz |
The EL1528 can deliver up to 450 mA of output drive current.
It operates from +5 V up to +12 V.
The device is specified for –40 °C to +85 °C operation.
It is offered in a 20‑pin HTSSOP and a 24‑pin QFN package.