LM49150TLEVAL

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: – Speaker: RL = 8Ω BTL, THD+N ≤ 1%: 520mW (typ) – Headphone: RL = 32Ω BTL, THD+N ≤ 1%: 42mW (typ) – Earpiece: RL = 8Ω SE, THD+N ≤ 1%: 35mW (typ) Output Offset – LS Mode: 9mV (typ) – HP Mode: 1mV (typ) – Earpiece: 1mV (typ) Single Supply Operation (VDD): 2.7 to 5.5V I2C Single Supply Operation: 1.7 to 5.5V APPLICATIONS • • • Mobile Phones PDAs Portable Electronics DESCRIPTION The LM49150 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones. Part of TI's PowerWise™ product family, the LM49150 consumes very low power in the various modes of operation and still providing great audio performance. The LM49150 combines a 1.25W mono E2S (Enhanced Emission Suppression) class D amplifier, 135mW Class AB earpiece amplifier, 42mW/channel stereo ground reference headphone amplifiers, volume control, and mixing circuitry into a single device. The filterless class D amplifier delivers 1.25W into an 8Ω load with