Specification	LM4935RL/NOPB

Features	DAC, SPI, Standby, Shutdown, Depop, I2C, PCM, I2S, Mute, Microphone, ADC, Volume Control
Max Output Power x Channels @ Load	52 mW, 1.3 W
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Type	1-Channel (Mono) with Stereo Headphones
Package / Case	49-WFBGA, DSBGA
Supplier Device Package	49-DSBGA
Type	Class D
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	2.7 V

LM4935 Series

Part	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Max Output Power x Channels @ Load	Output Type	Supplier Device Package	Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Package / Case	Features	Supplied Contents	Utilized IC / Part	Board Type
Texas Instruments LM4935RL/NOPB	85 °C	-40 °C	Surface Mount	1.3 W 52 mW	1-Channel (Mono) with Stereo Headphones	49-DSBGA	Class D	2.7 V	5.5 V	49-WFBGA DSBGA	ADC DAC Depop I2C I2S Microphone Mute PCM Shutdown SPI Standby Volume Control
Texas Instruments LM4935RLX/NOPB	85 °C	-40 °C	Surface Mount	1.3 W 52 mW	1-Channel (Mono) with Stereo Headphones	49-DSBGA	Class D	2.7 V	5.5 V	49-WFBGA DSBGA	ADC DAC Depop I2C I2S Microphone Mute PCM Shutdown SPI Standby Volume Control
Texas Instruments LM4935RLEVAL				1.3 W 52 mW	1-Channel (Mono) with Stereo Headphones			2.7 V	5.5 V			Board(s)	LM4935	Fully Populated

Pricing

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

Distributor	Package	Quantity	$

Texas Instruments	SMALL T&R	1	$ 9.27
		100	$ 7.56
		250	$ 5.94
		1000	$ 5.04

Description

General part information

LM4935 Series

The LM4935 is an integrated audio subsystem that supports both analog and digital audio functions. The LM4935 includes a high quality stereo DAC, a mono ADC, a multi-purpose SAR ADC, a stereo headphone amplifier, which supports output cap-less (OCL) or AC-coupled (SE)modes of operation, a mono earpiece amplifier and a mono high efficiency loudspeaker amplifier. It is designed for demanding applications in mobile phones and other portable devices.

The LM4935 features a bi-directional I2S serial interface for full range audio and anI2C or SPI compatible interface for control. The stereo DAC path features an SNR of 88 dB with an 18-bit 48 kHz input. In SE mode the headphone amplifier delivers at least 33 mWRMSto a 32Ω single-ended stereo load with less than 1% distortion (THD+N) when A_VDD= 3.3V. The mono earpiece amplifier delivers at least 115 mWRMSto a 32Ω bridged-tied load with less than 1% distortion (THD+N) when A_VDD= 3.3V. The mono speaker amplifier delivers up to 600 mW into an 8Ω load with less than 1% distortion when LS_VDD= 3.3V and up to 1.3W when LS_VDD= 5.0V. The LM4935 also contains a general purpose SAR ADC for housekeeping duties such as battery and temperature monitoring. This can also be used for analog volume control of the output stages and can trigger interrupt events.

The LM4935 employs advanced techniques to reduce power consumption, to reduce controller overhead to speed development time and to eliminate click and pop. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. It is therefore ideally suited for mobile phone and other low voltage applications where minimal power consumption, PCB area and cost are primary requirements.

Documents

Technical documentation and resources

Audio Sub-Sys w/Dual-Mode Stereo Hp Mono High Eff Loudspker Amp & Multi-Purp ADC datasheet (Rev. E)

Data sheet