AD45048AR

Overview

The AD45048AR is a dual voltage feedback operational amplifier designed for rail-to-rail upstream ADSL line driving. It operates on a wide supply range from 3.3 V to 24 V, delivering a linear output current of 230 mA peak into 25 Ω. The device features a 65 MHz bandwidth and a 55 V/μs slew rate. Noise performance includes 4.5 nV/√Hz voltage noise density at 100 kHz. It achieves −68 dBc multitone power ratio (MTPR) at 15 dBm into a 100 Ω telephone line. The output swings differentially up to 23 V p-p with a 50 Ω load from a 12 V supply.

Feature Summary

• Rail-to-rail output stage capable of swinging within 0.5 V of supply rails
• High output current capability of 230 mA peak into low impedance loads
• Fabricated using XFCB-HV process for high speed and low distortion
• Integrated protection against latch-up via silicon-on-insulator technology

Applications

• Consumer xDSL modems
• Twisted pair line drivers
• ADSL Customer Premises Equipment (CPE)
• Audio applications

Procurement Notes

Verify component status as the datasheet indicates this part is obsolete. Confirm availability through authorized distributors or secondary markets. Ensure the specific ordering suffix matches the required package option and lead-free status. Check for valid replacement components if new designs are initiated.

Selection Notes

Select this dual op amp for applications requiring high current drive and wide dynamic range in single-supply environments. It is suitable for transformer-coupled bridge hybrid circuits driving discrete multitone signals. Consider the 65 MHz bandwidth and low noise characteristics for fidelity requirements. Evaluate thermal dissipation capabilities within the SOIC-8 package for the intended operating temperature range.

Part Context

Analog Devices manufactures the AD45048 series using proprietary XFCB-HV technology. This family targets high-performance analog signal processing in telecommunications. The AD45048 specifically addresses the needs of upstream ADSL transmission where high linearity and current drive are critical. It serves as a specialized solution for consumer premise equipment in broadband access networks.

Replacement Considerations

The datasheet identifies the TS613ID and EL1519CS as drop-in replacements. Verify pin compatibility and electrical specifications before substitution. Ensure the alternative component meets the same thermal and current drive requirements for the specific application.