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WM8737LEFL/R PDF预览

WM8737LEFL/R

更新时间： 2024-11-22 14:31:39
品牌 Logo 应用领域
凌云 - CIRRUS 转换器
页数 文件大小 规格书
36页 467K
描述
ADC, Delta-Sigma, 24-Bit, 2 Func, CMOS, PQCC32

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中文翻译

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WM8737LEFL/R 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：HVQCCN,Reach Compliance Code：compliant
HTS代码：8542.39.00.01风险等级：5.72
转换器类型：ADC, DELTA-SIGMAJESD-30 代码：S-PQCC-N32
长度：5 mm模拟输入通道数量：2
位数：24功能数量：1
端子数量：32最高工作温度：85 °C
最低工作温度：-25 °C输出位码：2'S COMPLEMENT BINARY
输出格式：SERIAL封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE座面最大高度：1 mm
标称供电电压：3.3 V表面贴装：YES
技术：CMOS温度等级：OTHER
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD宽度：5 mm
Base Number Matches：1

WM8737LEFL/R 数据手册

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WM8737L  
Stereo ADC with Microphone Preamplifier  
DESCRIPTION  
FEATURES  
•
SNR 95dB (‘A’ weighted @ 3.3V, 48kHz, normal power  
mode)  
THD –90dB (at –0.5dB, 3.3V, normal power mode)  
Complete Stereo / Mono Microphone Interface  
The WM8737L is a low power stereo audio ADC designed  
specifically for portable applications such as minidisc and  
memory audio / voice recorders.  
•
•
The device offers three sets of stereo inputs, which can be  
configured for line-level signals, for internal or table-top  
microphones, or for DC measurement (battery monitor). A  
programmable gain amplifier can be used for automatic  
level control (ALC) with user programmable hold, attack and  
decay times. The device also has a selectable high pass  
filter to remove residual DC offsets.  
-
-
-
Programmable microphone preamp  
Automatic Level Control  
Low-noise microphone bias voltage  
•
•
Configurable Power / Performance  
Low Power Mode  
-
-
8mW at AVDD = 1.8V (stereo, mic preamps off)  
18.5mW at AVDD = 3.3V (stereo, mic preamps off)  
•
Low Supply Voltages  
If the signal source is mono, the WM8737L can run in mono  
mode, saving power. It can also mix two channels to mono,  
either in the analogue or the digital domain.  
-
-
-
Analogue 1.8V to 3.6V  
Digital core: 1.42V to 3.6V  
Digital I/O: 1.8V to 3.6V  
Master or slave mode clocking schemes are offered. Stereo  
24-bit multi-bit sigma-delta ADCs are used with digital audio  
output word lengths from 16-32 bits, and sampling rates  
from 8kHz to 96kHz supported.  
•
•
256fs / 384fs or USB master clock rates: 12MHz, 24MHz  
Audio sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,  
48, 88.2, 96kHz generated internally from master clock  
32-pin QFN package, 5 x 5 x 0.9mm  
•
The device is controlled via a 2 or 3 wire serial interface.  
The interface provides access to all features including gain  
controls, analogue or digital mono mixing, and power  
management facilities. The device is supplied in a leadless  
5x5mm QFN package.  
APPLICATIONS  
•
•
•
Memory Audio / Voice Recorders  
Minidisc Recorders  
Portable Digital Music Systems  
BLOCK DIAGRAM  
LACOUT  
BYPASS  
LACIN  
LPGA  
DGND  
ADC  
DCVDD  
DBVDD  
DC MEASUREMENT  
LINPUT1  
LINPUT2  
LINPUT3  
DIGITAL  
FILTER  
VREF  
ADCDAT  
ADCLRC  
BCLK  
ALC  
CONTROLS  
PGA GAIN  
(L+R)/2  
MONO  
MIX  
13/18/28/33 dB  
ANALOGUE  
MONO MIX  
VREF  
VREF  
LMICBOOST  
W
WM8737L  
VREF  
RMICBOOST  
DIGITAL  
FILTER  
ADC  
13/18/28/33 dB  
CLOCK  
CIRCUITRY  
MCLK  
VREF  
RINPUT3  
RINPUT2  
RINPUT1  
MICBIAS  
CONTROL  
INTERFACE  
50K  
50K  
BYPASS  
RPGA  
DC MEASUREMENT  
RACOUT  
RACIN  
MVDD  
Product Preview, June 2003, Rev 1.7  
Copyright 2003 Wolfson Microelectronics plc  
WOLFSON MICROELECTRONICS plc  
www.wolfsonmicro.com  
1234567...36

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