LM4938 Series

Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain

Catalog

Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain

Part	Output Type	Mounting Type	Package Width	Package Name	Package Length	Type	Features	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Maximum Output Power (per Channel)	Channels	Load Impedance
Texas Instruments LM4938MH/NOPB	2-Channel (Stereo) with Stereo Headphones	Surface Mount	4.4 mm	28-HTSSOP 28-PowerTSSOP	0.173 in	Class AB	Bass Boost Depop Mute Shutdown Thermal Protection Volume Control	85 °C	-20 °C	5.5 V	2.7 V	2.2 W 92 mW	2	3 Ohm 32 Ohm
Texas Instruments LM4938MHX/NOPB	2-Channel (Stereo) with Stereo Headphones	Surface Mount	4.4 mm	28-HTSSOP 28-PowerTSSOP	0.173 in	Class AB	Bass Boost Depop Mute Shutdown Thermal Protection Volume Control	85 °C	-20 °C	5.5 V	2.7 V	2.2 W 92 mW	2	3 Ohm 32 Ohm

Catalog

Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain

Description

The LM4938 is a monolithic integrated circuit that provides DC volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4Ω with less than 1.0% THD or 2.2W into 3Ω with less than 1.0% THD. Boomer audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components. The LM4938 incorporates a DC volume control, stereo bridged audio power amplifiers and a selectable gain or bass boost, making it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications. The LM4938 features an externally controlled, low-power consumption shutdown mode, and both a power amplifier and headphone mute for maximum system flexibility and performance. Note 1:When properly mounted to the circuit board, LM4938MH will deliver 2W into 4Ω. See Application Information section for more information. Note 2:An LM4938MH that has been properly mounted to the circuit board and forced-air cooled will deliver 2.2W into 3Ω. The LM4938 is a monolithic integrated circuit that provides DC volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4Ω with less than 1.0% THD or 2.2W into 3Ω with less than 1.0% THD. Boomer audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components. The LM4938 incorporates a DC volume control, stereo bridged audio power amplifiers and a selectable gain or bass boost, making it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications. The LM4938 features an externally controlled, low-power consumption shutdown mode, and both a power amplifier and headphone mute for maximum system flexibility and performance. Note 1:When properly mounted to the circuit board, LM4938MH will deliver 2W into 4Ω. See Application Information section for more information. Note 2:An LM4938MH that has been properly mounted to the circuit board and forced-air cooled will deliver 2.2W into 3Ω.