Specification	LM48821TL/NOPB

Features	Volume Control, Mute, Shutdown, Differential Inputs, I2C, Depop
Max Output Power x Channels @ Load	93 mW, 1
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Type	Headphones, 2-Channel (Stereo)
Package / Case	16-WFBGA, DSBGA
Supplier Device Package	16-DSBGA
Type	Class AB
Voltage - Supply [Max]	4 V
Voltage - Supply [Min]	2 V

LM48821 Series

Part	Operating Temperature [Max]	Operating Temperature [Min]	Max Output Power x Channels @ Load	Output Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Mounting Type	Package / Case	Features	Supplier Device Package	Type
Texas Instruments LM48821TL/NOPB	85 °C	-40 °C	1 93 mW	Headphones 2-Channel (Stereo)	4 V	2 V	Surface Mount	16-WFBGA DSBGA	Depop Differential Inputs I2C Mute Shutdown Volume Control	16-DSBGA	Class AB
Texas Instruments LM48821TLX/NOPB	85 °C	-40 °C	1 93 mW	Headphones 2-Channel (Stereo)	4 V	2 V	Surface Mount	16-WFBGA DSBGA	Depop Differential Inputs I2C Mute Shutdown Volume Control	16-DSBGA	Class AB

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	$ 2.70
		10	$ 2.42
		25	$ 2.29
		100	$ 1.99
	Digi-Reel®	1	$ 2.70
		10	$ 2.42
		25	$ 2.29
		100	$ 1.99
	Tape & Reel (TR)	250	$ 1.33
		500	$ 1.26
Texas Instruments	SMALL T&R	1	$ 2.09
		100	$ 1.73
		250	$ 1.24
		1000	$ 0.94

Description

General part information

LM48821 Series

With its directly-coupled output technology, the LM48821 is a variable gain audio power amplifier capable of delivering 52mWRMSper channel into a 16Ω single-ended load with less than 1% THD+N from a 3V power supply. The I2C volume control has a range of –76dB to 18dB.

The LM48821's Tru-GND technology utilizes advanced charge pump technology to generate the LM48821’s negative supply voltage. This eliminates the need for output-coupling capacitors typically used with single-ended loads.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM48821 does not require output coupling capacitors or bootstrap capacitors, and therefore, is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.

Documents

Technical documentation and resources

Direct Coupled, Ultra Low Noise, 52mW Diff Input Stereo Hp Amp w/I2C Vol Cntrl datasheet (Rev. A)

Data sheet