Specification	LM49120TL/NOPB

Features	Volume Control, Depop, Thermal Protection, Shutdown, I2C, Mute
Max Output Power x Channels @ Load	1.3 W, 85 mW
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Type	1-Channel (Mono) with Stereo Headphones
Package / Case	16-WFBGA, DSBGA
Supplier Device Package	16-DSBGA
Type	Class AB
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	2.7 V

LM49120 Series

1.3-W, stereo, analog input Class-AB audio amplifier with I2C interface

Part	Type	Output Type	Max Output Power x Channels @ Load	Features	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplier Device Package	Package / Case	Mounting Type
Texas Instruments LM49120TL/NOPB	Class AB	1-Channel (Mono) with Stereo Headphones	1.3 W 85 mW	Depop I2C Mute Shutdown Thermal Protection Volume Control	85 °C	-40 °C	2.7 V	5.5 V	16-DSBGA	16-WFBGA DSBGA	Surface Mount
Texas Instruments LM49120TLX/NOPB	Class AB	1-Channel (Mono) with Stereo Headphones	1.3 W 85 mW	Depop I2C Mute Shutdown Thermal Protection Volume Control	85 °C	-40 °C	2.7 V	5.5 V	16-DSBGA	16-WFBGA DSBGA	Surface Mount

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 2.89
		10	$ 2.60
		25	$ 2.45
		100	$ 2.13
	Digi-Reel®	1	$ 2.89
		10	$ 2.60
		25	$ 2.45
		100	$ 2.13
	Tape & Reel (TR)	250	$ 1.33
		500	$ 1.17
Texas Instruments	SMALL T&R	1	$ 2.78
		100	$ 2.30
		250	$ 1.65
		1000	$ 1.24

Description

General part information

LM49120 Series

The LM49120 is a compact audio subsystem designed for portable handheld applications such as cellular phones. The LM49120 combines a mono 1.3W speaker amplifier, stereo 85mW/ch output capacitorless headphone amplifier, 32 step volume control, and an input mixer/multiplexer into a single 16–bump DSBGA package.

The LM49120 has three input channels: two single-ended stereo inputs and a differential mono input. Each input features a 32-step digital volume control. The headphone output stage features an 8 step (-18dB – 0dB) attenuator, while the speaker output stage has two selectable (0dB/+6dB) gain settings. The digital volume control and mode control are programmed through a two-wire I2C compatible interface.

Documents

Technical documentation and resources

Audio Subsystem with Mono Class AB Loudspeaker Amp & Stereo OCL/SE Headphone Amp datasheet (Rev. C)

Data sheet