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TWL1109PBSR PDF预览

TWL1109PBSR

更新时间： 2024-11-22 23:38:35
品牌 Logo 应用领域
其他 - ETC 解码器编解码器PC
页数 文件大小 规格书
27页 446K
描述
PCM CODEC|SINGLE|TQFP|32PIN|PLASTIC

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中文翻译

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TWL1109PBSR 数据手册

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TWL1109  
VOICE-BAND AUDIO PROCESSOR (VBAP )  
SLWS095 – MARCH 2000  
2.7-V Operation  
Programmable for 15-Bit Linear Data or  
8-Bit Companded (µ-Law or A-Law) Mode  
Two Differential Microphone Inputs, One  
Differential Earphone Output, and One  
Single-Ended Earphone Output  
32-Terminal TQFP Package  
Designed for Analog and Digital Wireless  
Handsets and Telecommunications  
Applications  
Programmable Gain Amplifiers for  
Transmit, Receive, Sidetone, and Volume  
Control  
Dual-Tone Multifrequency (DTMF)  
Earphone Mute and Microphone Mute  
Pulse Density Modulated (PDM) Buzzer  
Output  
2
On-chip I C-Bus, Which Provides a Simple,  
Standard, Two-Wire Serial Interface With  
Digital ICs  
description  
The voice-band audio processor (VBAP) is designed to perform the transmit encoding analog/digital (A/D)  
conversion and receive decoding digital/analog (D/A) conversion, together with transmit and receive filtering,  
for voice-band communications systems. The device operates in either the 15-bit linear or 8-bit companded  
2
(µ-law or A-Law) mode, which is selectable through the I C interface. From a 2.048-MHz master clock input,  
the VBAP generates its own internal clocks.  
PBS PACKAGE  
(TOP VIEW)  
24 23 22 21 20 19 18 17  
16  
25  
26  
27  
28  
PLLV  
PCMO  
PCMI  
DD  
15  
14  
13  
EARV  
SS  
EAR1ON  
EARV  
DV  
DV  
SS  
DD  
DD  
12  
EAR1OP  
EARV  
SCL  
29  
30  
31  
32  
11 SDA  
10  
9
SS  
EAR2O  
AV  
NC  
NC  
DD  
1
2
3
4
5
6
7
8
NC – No internal connection  
This device contains circuits to protect its inputs and outputs against damage due to high static voltages or electrostatic fields. These  
circuits have been qualified to protect this device against electrostatic discharges (ESD) of up to 2 kV according to MIL-STD-883C,  
Method 3015; however, it is advised that precautions be taken to avoid application of any voltage higher than maximum-rated  
voltages to these high-impedance circuits. During storage or handling, the device leads should be shorted together or the device  
should be placed in conductive foam. In a circuit, unused inputs should always be connected to an appropriated logic voltage level,  
preferably either V  
or ground. Specific guidelines for handling devices of this type are contained in the publication Guidelines for  
CC  
Handling Electrostatic-Discharge-Sensitive (ESDS) Devices and Assemblies available from Texas Instruments.  
VBAP is a trademark of Texas Instruments Incorporated.  
Copyright 2000, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
Powered by ICminer.com Electronic-Library Service CopyRight 2003  
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