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ISD4002 参数 Datasheet PDF下载

ISD4002图片预览
型号: ISD4002
PDF下载: 下载PDF文件 查看货源
内容描述: 单芯片语音记录/播放设备120- , 150- , 180-和240 -二时长 [Single-Chip Voice Record/Playback Devices 120-, 150-, 180-, and 240-Second Durations]
分类和应用:
文件页数/大小: 38 页 / 396 K
品牌: WINBOND [ WINBOND ]
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ISD4002 SERIES  
7. FUNCTIONAL DESCRIPTION  
7.1. DETAILED DESCRIPTION  
Audio Quality  
The Winbond’s ISD4002 ChipCorder® series is offered at 8.0, 6.4, 5.3 and 4.0 kHz sampling  
frequencies, allowing the user a choice of speech quality options. Increasing the sampling frequency  
will produce better sound quality, but affects duration. Please refer to Table 1: Product Summary for  
details.  
Analog speech samples are stored directly into on-chip non-volatile memory without the digitization  
and compression associated with other solutions. Direct analog storage provides higher quality  
reproduction of voice, music, tones, and sound effects than other solid-state solutions.  
Duration  
The ISD4002 Series is a single-chip solution with 120, 150, 180, and 240 seconds duration.  
TABLE 1: PRODUCT SUMMARY OF ISD4002 SERIES  
Part Number  
Duration  
Sample Rate  
Typical Filter Pass  
(Seconds)  
(kHz)  
Band (kHz) *  
ISD4002-120  
ISD4002-150  
ISD4002-180  
ISD4002-240  
120  
150  
180  
240  
8.0  
6.4  
5.3  
4.0  
3.4  
2.7  
2.3  
1.7  
* This is the –3dB point. This parameter is not checked during production testing and may vary due to process  
variations and other factors. Therefore, the customer should not rely upon this value for testing purposes.  
Flash Storage  
The ISD4002 series utilizes on-chip Flash memory, providing zero-power message storage. The  
message is retained for up to 100 years typically without power. In addition, the device can be re-  
recorded typically over 100,000 times.  
Memory Architecture  
The ISD4002 series contains a total of 960K Flash memory cells, which is organized as 600 rows of  
1,600 cells each.  
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