Maxim Alternatives for the National Semiconductor LM4663

National Semiconductor LM4663

Benefits of the MAX9753 over the LM4663:

• Lower THD (0.03% vs. 0.2% speaker, 0.03% vs. 0.15% headphone) than the National LM4663
• Higher PSRR than LM4663 (80dB vs. 44dB headphone; 77dB vs. 44dB speaker)
• Lower supply current (18mA vs. 35mA speaker)
• 2 pin-selectable gains vs. one for LM4663
• DirectDrive eliminates the 220µF caps required by the LM4663
• Integrated headphone sense circuits (LM4663 requires external components)

Benefits of the LM4663 over the MAX9753:

• LM4663 is in smaller 24-pin TSSOP vs. 28-pin TSSOP
• LM4663 has higher input impedance (20k vs. 6.6k)
• LM4663 has higher headphone power (80mW vs. 55mW)

Maxim Alternative(s)	Description	Data Sheet	Order
MAX9752, MAX9753, MAX9754	2.2W, Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers	QuickView Full (PDF) Data Sheet	Sample Buy