Specification	LMV1099TLX/NOPB

Features	Shutdown, I2C, Differential Inputs, Mute, Microphone
Max Output Power x Channels @ Load	83 mW, 1
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Type	1-Channel (Mono)
Package / Case	25-WFBGA
Supplier Device Package	25-uSMD
Type	Class AB
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	2.7 V

LMV1099 Series

Dual input microphone preamp with far field noise suppression, SNR enhancement & earpiece driver

Part	Voltage - Supply [Min]	Voltage - Supply [Max]	Type	Mounting Type	Features	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Max Output Power x Channels @ Load	Output Type	Package / Case
Texas Instruments LMV1099TLX/NOPB	2.7 V	5.5 V	Class AB	Surface Mount	Differential Inputs I2C Microphone Mute Shutdown	25-uSMD	85 °C	-40 °C	1 83 mW	1-Channel (Mono)	25-WFBGA
Texas Instruments LMV1099TL/NOPB	2.7 V	5.5 V	Class AB	Surface Mount	Differential Inputs I2C Microphone Mute Shutdown	25-uSMD	85 °C	-40 °C	1 83 mW	1-Channel (Mono)	25-WFBGA

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	3000	$ 1.65
		6000	$ 1.58
Texas Instruments	LARGE T&R	1	$ 2.84
		100	$ 2.49
		250	$ 1.74
		1000	$ 1.41

Description

General part information

LMV1099 Series

The LMV1099 is an uplink and downlink voice intelligibility enhancing analog IC, ideally suited for mobile handsets. Uplink voice intelligibility is improved by rejecting far-field noise through a unique two-microphone solution. Downlink voice intelligibility is improved by enhancing the SNR (Signal-to-Noise Ratio) between the downlink voice and the ambient noise environment at the user’s earpiece.

The LMV1099 preserves uplink near-field voice signals within close range of the microphones while rejecting far-field acoustic noise greater than 0.5m from the microphones.

The LMV1099 also enhances downlink voice intelligibility by improving near-field SNR based on the user’s environment. The analog circuitry adapts dynamically to both the user’s ambient noise environment as well as the downlink signal amplitude to ensure optimum SNRI (signal-to-noise ratio improvement). The downlink path also provides uplink noise attenuation through an adjustable high pass filter before the SNR enhanced downlink voice reaches the user’s earpiece.

Documents

Technical documentation and resources

Uplink Far Field Noise Suppression and Downlink SNR Enhancing Microphone Amp datasheet (Rev. D)

Data sheet