Datasheet Texas Instruments LM49150 — 数据表

LM49150, LM49150TLEVAL
www.ti.com LM49150 SNAS439C – AUGUST 2008 – REVISED MAY 2013 Mono Class D Audio Subsystem with Earpiece
Driver and Stereo Ground Referenced Headphone Amplifiers
Check for Samples: LM49150, LM49150TLEVAL FEATURES 1 23 2 E S Class D Amplifier
Ground Referenced Headphone Outputs —
Eliminates Output Coupling Capacitors
I2C Volume and Mode Control
Mono Earpiece Amplifier
Flexible Output for Speaker and Headphone
Output
20–Bump DSBGA Package
Soft Enable Function
“Click and Pop” Suppression Circuitry
Thermal Shutdown Protection
Low Supply Current
Micro-Power Shutdown KEY SPECIFICATIONS Output power at VDD = 5V:
– Speaker: RL = 8Ω BTL, THD+N ≤ 1%: 1.25W
(typ)
– Headphone: RL = 32Ω SE, THD+N ≤ 1%:
42mW (typ)
– Earpiece: RL = 8Ω SE, THD+N ≤ 1%: 135mW
(typ)
Output power at VDD = 3.3V: …