The LM4917 is a stereo, output capacitor-less headphone amplifier capable of delivering 95mW of continuous average power into a 16Ω load with less than 1% THD+N from a single 3V power supply.
The LM4917 provides high quality audio reproduction with minimal external components. A ground referenced output eliminates the output coupling capacitors typically required by single-ended loads, reducing component count, cost and board space consumption. This makes the LM4917 ideal for mobile phones and other portable equipment where board space is at a premium. Eliminating the output coupling capacitors also improves low frequency response.
The LM4917 operates from a single 1.4V to 3.6V power supply, features low 0.02% THD+N and 70dB PSRR. Independent right/left channel low-power shutdown controls provide power saving flexibility for mono/stereo applications. Superior click and pop suppression eliminates audible transients during start up and shutdown. Short circuit and thermal overload protection protects the device during fault conditions.
Ground Referenced Outputs
High PSRR
Available in Space-Saving TSSOP Package
Ultra Low Current Shutdown Mode
Improved Pop and Click Circuitry eliminates Noises During Turn-On and Turn-Off Transitions
1.4 – 3.6V Operation
No Output Coupling Capacitors, Snubber Networks, Bootstrap Capacitors
Shutdown Either Channel Independently
## Key Specifications
Improved PSRR at 1kHz: 70dB (Typ)
Power Output at VDD = 3V, RL = 16Ω, THD ≦ 1%: 95mW (Typ)
Shutdown Current: 0.01µA (Typ)
All trademarks are the property of their respective owners.
