The AD45048 is a dual operational amplifier from Analog Devices that can drive high output current (230 mA) and features a rail-to-rail output.
The AD45048 is a voltage‑feedback, rail‑to‑rail output amplifier designed for ADSL CPE line‑driver applications. It delivers up to 230 mA output current, supports a wide supply range (3.3 V to 24 V), and offers low distortion and noise performance.
The datasheet provides detailed specifications, absolute maximum ratings, typical performance graphs, layout recommendations, and application guidance for transformer selection and receive‑channel considerations in xDSL systems.
| Supply Voltage Range | 3.3 V to 24 V |
|---|---|
| Maximum Output Current | 230 mA |
| Slew Rate | 55 V/µs |
| Input Voltage Noise (100 kHz) | 4.5 nV/√Hz |
| Input Current Noise (100 kHz) | 1.5 pA/√Hz |
| Power Supply Rejection Ratio | −85 dB to −75 dB |
| Common‑Mode Rejection Ratio | −86 dB to −79 dB |
| Operating Temperature Range | ‑40 °C to +85 °C |
The AD45048 can operate from a supply voltage as low as 3.3 V up to 24 V.
It can deliver up to 230 mA of output current.
Input voltage noise is 4.5 nV/√Hz and input current noise is 1.5 pA/√Hz at 100 kHz.