Texas Instruments LM49370RLEVAL Evaluation Board LM49370RLEVAL/NOPB LM49370RLEVAL/NOPB 数据表
产品代码
LM49370RLEVAL/NOPB
SNAS356D – FEBRUARY 2007 – REVISED MARCH 2012
LM49370 Boomer® Audio Power Amplifier Series Audio Sub-System with an Ultra Low
EMI, Spread Spectrum, Class D Loudspeaker Amplifier, a Dual-Mode Stereo Headphone
Amplifier, and a Dedicated PCM Interface for Bluetooth Transceivers
Check for Samples:
1
FEATURES
•
16 Step Volume Control for Microphone in 2
dB Steps
dB Steps
2
•
Spread Spectrum Class D Architecture
•
Programmable Sidetone Attenuation in 3 dB
Reduces EMI
Steps
•
Mono Class D 8
Ω
Amplifier, 490 mW at 3.3V
•
Two Configurable GPIO Ports
•
OCL or AC-Coupled Headphone Operation
•
Multi-Function IRQ Output
•
33mW Stereo Headphone Amplifier at 3.3V
•
Micro-Power Shutdown Mode
•
115 mW Earpiece Amplifier at 3.3V
•
Available in the 4 x 4 mm 49 Bump DSBGA
•
18-bit Stereo DAC
Package
•
16-bit Mono ADC
•
Key Specifications
•
8 kHz to 192 kHz Stereo Audio Playback
–
P
HP (AC-COUP)
(A_V
DD
= 3.3V, 32
Ω
, 1% THD) 33
•
8 kHz to 48 kHz Mono Recording
mW
•
Bidirectional I
2
S Compatible Audio Interface
–
P
HP (OCL)
(A_V
DD
= 3.3V, 32
Ω
, 1% THD) 31
•
Bidirectional PCM Compatible Audio Interface
mW
for Bluetooth Transceivers
–
P
LS
( LS_V
DD
= 5V, 8
Ω
, 1% THD) 1.2 W
•
I
2
S-PCM Bridge with Sample Rate Conversion
–
P
LS
(LS_V
DD
= 4.2V, 8
Ω
, 1% THD) 900 mW
•
Sigma-Delta PLL for Operation from Any Clock
–
P
LS
(LS_V
DD
= 3.3V, 8
Ω
, 1% THD) 490 mW
at Any Sample Rate
–
Shutdown Current 0.8 µA
•
Digital 3D Stereo Enhancement
–
PSRR
LS
(217 Hz, LS_V
DD
= 3.3V) 70 dB
•
FIR Filter Programmability for Simple Tone
–
SNR
LS
(AUX IN to Loudspeaker) 90 dB (typ)
Control
–
SNR
DAC
(Stereo DAC to AUXOUT) 85 dB
•
Low Power Clock Network Operation if a 12
(typ)
MHz or 13 MHz System Clock is Available
–
SNR
ADC
(Mono ADC from Cell Phone In) 90
•
Read/Write I
2
C or SPI Compatible Control
dB (typ)
Interface
–
SNR
HP
(Aux In to Headphones) 98 dB (typ)
•
Automatic Headphone & Microphone Detection
•
Support for Internal and External Microphones
APPLICATIONS
•
Automatic Gain Control for Microphone Input
•
Smart Phones
•
Differential Audio I/O for External Cellphone
•
Mobile Phones and Multimedia Terminals
Module
•
PDAs, Internet Appliances and Portable
•
Mono Differential Auxiliary Output
Gaming
•
Stereo Auxiliary Inputs
•
Portable DVD/CD/AAC/MP3 Players
•
Differential Microphone Input for Internal
•
Digital Cameras/Camcorders
Microphone
•
Flexible Audio Routing from Input to Output
•
32 Step Volume Control for Mixers in 1.5 dB
Steps
Steps
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2007–2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.