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参数资料
| 型号： | ISD4004-12MS |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | 音频合成 |
| 英文描述： | Single-Chip Voice Record/Playback Devices 8-, 10-, 12-, and 16-Minute Durations |
| 中文描述： | 720 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28 |
| 封装： | 0.300 INCH, PLASTIC, SOIC-28 |
| 文件页数： | 8/28页 |
| 文件大小： | 980K |
| 代理商： | ISD4004-12MS |
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ISD4004 Series
4
Voice Solutions in Silicon
ROW ADDRESS CLOCK (RAC)
This is an open drain output pin that provides a sig-
nal with a 200 ms period at the 8 KHz sampling fre-
quency. (This represents a single row of memory
and there are 2400 rows of memory in the ISD4004
series devices.) This signal stays HIGH for 175 ms
and stays LOW for 25 ms when it reaches the end
of a row.
The RAC pin stays HIGH for 109.38 sec and stays
LOW for 15.63 sec in Message Cueing mode
(see page 5 for a more detailed description of
Message Cueing). Refer to the AC Parameters ta-
ble for RAC timing information on other sample
rate products.
When a record command is first initiated, the RAC
pin remains HIGH for an extra T
RACLO
period. This is
due to the need to load sample and hold circuits
internal to the device. This pin can be used for
message management techniques.
EXTERNAL CLOCK INPUT (XCLK)
The external clock input for the ISD4004 products
has an internal pull-down device. These products
are configured at the factory with an internal sam-
pling clock frequency centered to ± 1 percent of
specification. The frequency is then maintained to
a variation over the entire commercial tempera-
ture and operating voltage ranges as defined by
the minimum/maximum limits in the applicable
AC Parameters table. The internal clock has a tol-
erance, over the extended temperature, industrial
temperature and voltage ranges as defined by the
minimum/maximum limits in the applicable AC
Parameters table. A regulated power supply is
recommended for industrial temperature range
parts. If greater precision is required, the device
can be clocked through the XCLK pin in Table 1.
These recommended clock rates should not be
varied because the antialiasing and smoothing filters
are fixed. Thus, aliasing problems can occur if the
sample rate differs from the one recommended.
The duty cycle on the input clock is not critical, as
the clock is immediately divided by two internally.
If the X CLK is not used, this input should be
connected to ground.
AUTOMUTE FEATURE (AM CAP)
This pin is used in controlling the AutoMute feature.
The AutoMute feature attenuates the signal when
it drops below an internally set threshold. This helps
to eliminate noise (with 6 dB of attenuation) when
there is no signal (i.e., during periods of silence). A
1 F capacitor to ground should be connected to
the AM CAP pin. This capacitor becomes a part of
an internal peak detector which senses the signal
amplitude (peak). This peak level is compared to
an internally set threshold to determine the Auto-
Mute trip point. For large signals the AutoMute at-
tenuation is set to 0 dB while 6 dB of attenuation
occurs for silence. The 1 F capacitor also affects
the rate at which the AutoMute feature changes
with the signal amplitude (or the attack time). The
Automute feature can be disabled by connecting
the AM CAP pin to V
CCA
.
Table 1:
External Clock Input Clocking
Table
Part Number
Sample Rate
Required Clock
ISD4004-08M
8.0 KHz
1024 KHz
ISD4004-10M
6.4 KHz
819.2 KHz
ISD4004-12M
5.3 KHz
682.7 KHz
ISD4004-16M
4.0 KHz
512 KHz
相关PDF资料 |
PDF描述 |
|---|---|
| ISD4004-12MSI | Single-Chip Voice Record/Playback Devices 8-, 10-, 12-, and 16-Minute Durations |
| ISD4004-12MX | Single-Chip Voice Record/Playback Devices 8-, 10-, 12-, and 16-Minute Durations |
| ISD4004-16ME | Single-Chip Voice Record/Playback Devices 8-, 10-, 12-, and 16-Minute Durations |
| ISD4004-16MED | Single-Chip Voice Record/Playback Devices 8-, 10-, 12-, and 16-Minute Durations |
| ISD4004-16MEI | Single-Chip Voice Record/Playback Devices 8-, 10-, 12-, and 16-Minute Durations |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISD400412MSD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Single-Chip Voice Record/Playback Devices 2- to 16-Minute Durations |
| ISD4004-12MSI | 功能描述:IC VOICE REC/PL 12MIN IN 28SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 语音录制和重放 系列:ISD4004 标准包装:14 系列:- 接口:串行 滤波器通频带:1.7kHz 持续时间:8 ~ 32 秒 安装类型:通孔 封装/外壳:28-DIP（0.300"，7.62mm） 供应商设备封装:28-PDIP 其它名称:90-21300+000 |
| ISD4004-12MSIR | 功能描述:IC VOICE REC/PL 12MIN IN 28SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 语音录制和重放 系列:ISD4004 标准包装:14 系列:- 接口:串行 滤波器通频带:1.7kHz 持续时间:8 ~ 32 秒 安装类型:通孔 封装/外壳:28-DIP（0.300"，7.62mm） 供应商设备封装:28-PDIP 其它名称:90-21300+000 |
| ISD4004-12MSY | 功能描述:IC VOICE REC/PLAY 12MIN 28-SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 语音录制和重放 系列:ISD4004 标准包装:14 系列:- 接口:串行 滤波器通频带:1.7kHz 持续时间:8 ~ 32 秒 安装类型:通孔 封装/外壳:28-DIP（0.300"，7.62mm） 供应商设备封装:28-PDIP 其它名称:90-21300+000 |
| ISD4004-12MSYI | 功能描述:IC VOICE REC/PLAY 12MIN 28-SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 语音录制和重放 系列:ISD4004 标准包装:14 系列:- 接口:串行 滤波器通频带:1.7kHz 持续时间:8 ~ 32 秒 安装类型:通孔 封装/外壳:28-DIP（0.300"，7.62mm） 供应商设备封装:28-PDIP 其它名称:90-21300+000 |
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