参数资料
型号: LM4549AVH/NOPB
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封装: 7 X 7 MM, 1.40 MM HEIGHT, LQFP-48
文件页数: 26/28页
文件大小: 543K
代理商: LM4549AVH/NOPB
Typical Application
APPLICATION HINTS
The LM4549A must be initialized by using RESET# to perform a Power On Reset as shown in the Power On Reset Timing
Diagram
V
REF must be pulled high to AVDD witha10k
resistor to ensure correct operation
Don’t leave unused inputs floating. Tie all unused inputs together and connect to Analog Ground through a capacitor (e.g. 0.1
F)
Do not leave CD_GND floating when using the CD stereo input. CD_GND is the AC signal reference for the CD channels and
should be connected to the CD source ground (Analog Ground may also be acceptable) througha1F capacitor
If using a non-standard AC Link controller take care to keep the SYNC and SDATA_IN signals low during Cold Reset to avoid
entering the ATE or Vendor test modes by mistake
The PC_Beep input should be muted if not used since it defaults to 0 dB gain on reset, unlike the mute default of the other
analog inputs
20029903
FIGURE 1. LM4549A Typical Application Circuit, Single Codec, 1 Vrms inputs
LM4549A
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相关代理商/技术参数
参数描述
LM4549AVHX 制造商:Rochester Electronics LLC 功能描述:AC97 REV2.1 CODEC - Bulk
LM4549B 制造商:NSC 制造商全称:National Semiconductor 功能描述:AC ’97 Rev 2.1 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound
LM4549BVH 功能描述:接口—CODEC RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel
LM4549BVH/NOPB 功能描述:接口—CODEC RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel
LM4549BVHX 功能描述:接口—CODEC RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel