SGM4917.pdf• SGM4917A: External Feedback Gain
Network SGM4917B: Fixed -2V/V Gain
• No Bulky DC-Blocking Capacitors Required
• Ground-Referenced Outputs Eliminate
DC-Bias Voltage on Headphone Ground Pin
• No Degradation of Low-Frequency
Response Due to Output Capacitors
• Differential Inputs for Enhanced Noise Cancellation
• 80mW into 32Ω Load from 5V Power
Supply at THD+N = 0.1% (TYP, per Channel)
• Low 0.02% THD+N
• High PSRR (-78dB at 217Hz)
• Integrated Click-and-Pop Suppression
• 2.7V to 5.5V Single Supply Operation
• Low Quiescent Current (2.7mA at VDD = 5V)
• Shutdown Control
• Under-Voltage Lockout Function
• -40℃ to +85℃ Operating Temperature Range
• Available in Green TQFN-3×3-16L Package
• 2.4V to 5.5V Single-Supply Operation
• High PSRR (80dB at 217Hz) Eliminates LDO
• No Bulky DC-Blocking Capacitors Required
• Ground-Referenced Outputs Eliminate
DC Bias Voltage on Headphone Ground Pin
• No Degradation of Low-Frequency
Response Due to Output Capacitors
• Differential Inputs for Enhanced Noise Cancellation
• Adjustable Gain (MAX9722A) or
Fixed -2V/V Gain (MAX9722B)
• 130mW per Channel into 32Ω
• Low 0.009% THD+N
• Integrated Click-and-Pop Suppression
• Low Quiescent Current (5.5mA)
• Short-Circuit and Thermal-Overload Protection
• ±8kV ESD-Protected Amplifier Outputs
(Human Body Model)
• Available in a Space-Saving 16-Pin Thin
QFN (3mm ✕ 3mm ✕ 0.8mm) Package
