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PCM3793RHBR

更新时间： 2024-09-21 04:10:59
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页数 文件大小 规格书
63页 960K
描述
16-Bit, Low-Power Stereo Audio CODEC With Microphone Bias, Headphone, and Digital Speaker Amplifier

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PCM3793RHBR 数据手册

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PCM3793  
PCM3794  
SLES193A–AUGUST 2006–REVISED SEPTEMBER 2006  
16-Bit, Low-Power Stereo Audio CODEC With Microphone Bias, Headphone, and Digital  
Speaker Amplifier  
FEATURES  
•
•
•
Headphone Plug Insert Detection  
2 (I2C) or 3 (SPI) Wire Serial Control  
•
Analog Front End:  
– Stereo Single-Ended Input With Multiplexer  
– Mono Differential Input  
Programmable Function by Register Control:  
– Digital Attenuation of DAC: 0 dB to –62 dB  
– Power Up/Down Control for Each Module  
– 6-dB to –70-dB Gain for Analog Outputs  
– 30-dB to –12-dB Gain for Analog Inputs  
– Stereo Programmable Gain Amplifier  
– Microphone Boost Amplifier (20 dB) and  
Bias  
•
•
Analog BackEnd:  
– 0/20 dB Boost Selectable for Microphone  
Input  
– Stereo/Mono Line Output With Volume  
– Stereo/Mono Headphone Amplifier With  
Volume and Capless Mode  
– 0-dB to –21-dB Gain for Analog Mixing  
– Parameter Settings for ALC  
– Stereo/Mono Digital Speaker Amplifier  
(BTL) With Volume (PCM3793)  
– Three-Band Tone Control and 3D Sound  
– High-Pass Filter and Two-Stage Notch Filter  
– Analog Mixing  
Analog Performance:  
– Dynamic Range: 93 dB (DAC)  
– Dynamic Range: 90 dB (ADC)  
•
•
•
•
Pop-Noise Reduction Circuit  
Short and Thermal Protection Circuit  
Package: 5-mm × 5-mm QFN Pacakge  
Operation Temperature Range: –40°C to 85°C  
– 40-mW + 40-mW Headphone Output at  
RL = 16 Ω  
– 700-mW + 700-mW Speaker Output at  
RL = 8 Ω  
APPLICATIONS  
•
•
Power Supply Voltage  
•
•
•
Portable Audio Player, Cellular Phone  
Video Camcorder, Digital Still Camera  
PMP/DMB  
– 1.71 V to 3.6 V for Digital I/O Section  
– 1.71 V to 3.6 V for Digital Core Section  
– 2.4 V to 3.6 V for Analog Section  
– 2.4 V to 3.6 V for Power Amplifier Section  
Low Power Dissipation:  
DESCRIPTION  
The PCM3793/94 is a low-power stereo CODEC  
designed for portable digital audio applications. The  
device integrates stereo digital speaker amplifier,  
headphone amplifier, line amplifier, line input, boost  
amplifier, microphone bias, programmable gain  
control, analog mixing, sound effects, and automatic  
level control (ALC). It is available in a small-footprint,  
5-mm × 5-mm QFN package. The PCM3793/94  
accepts right-justified, left-justified, I2S, and DSP  
formats, providing easy interfacing to audio DSP,  
decoder, and encoder chips. Sampling rates up to 50  
kHz are supported. The user-programmable  
functions are accessible through a two- or three-wire  
serial control port.  
– 7 mW in Playback, 1.8 V/2.4 V, 48 kHz  
– 13 mW in Record, 1.8 V/2.4 V, 48 kHz  
– 30 µW in Power Down  
•
•
•
Sampling Frequency: 5 kHz to 50 kHz  
Automatic Level Control for Recording  
Operation From a Single Clock Input Without  
PLL  
•
System Clock:  
– Common-Audio Clock (256 fS/384 fS), 12/24,  
13/26, 13.5/27, 19.2/38.4, 19.68/39.36 MHz  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006, Texas Instruments Incorporated  
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