Datasheet > I1212X

I1212X

更新时间： 2024-02-29 05:37:29

品牌	Logo	应用领域
华邦 - WINBOND		可编程只读存储器电动程控只读存储器电可擦编程只读存储器汽车音响手机变压器商用集成电路
页数	文件大小	规格书
33页	290K
描述
Speech Synthesizer With RCDG, 12s, CMOS, DIE-25

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I1212X 技术参数

生命周期：	Obsolete	零件包装代码：	DIE
包装说明：	DIE,	针数：	25
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.84	应用：	CAR STEREO; HANDSET; TRANSFORMER
商用集成电路类型：	SPEECH SYNTHESIZER WITH RCDG	JESD-30 代码：	R-XUUC-N25
功能数量：	1	端子数量：	25
片上内存类型：	EEPROM	最高工作温度：	50 °C
最低工作温度：		封装主体材料：	UNSPECIFIED
封装代码：	DIE	封装形状：	RECTANGULAR
封装形式：	UNCASED CHIP	认证状态：	Not Qualified
最长读取时间：	12 s	最大供电电压 (Vsup)：	6.5 V
最小供电电压 (Vsup)：	4.5 V	表面贴装：	YES
技术：	CMOS	温度等级：	COMMERCIAL
端子形式：	NO LEAD	端子位置：	UPPER
Base Number Matches：	1

I1212X 数据手册

ISD1200 SERIES

PIN NAME

PIN NO.

FUNCTION

MIC REF

Microphone Reference: The MIC REF input is the inverting

input to the microphone preamplifier. This provides a noise-

canceling or common-mode rejection input to the device when

connected to a differential microphone.

AGC

Automatic Gain Control (AGC): The AGC input dynamically

adjusts the gain of the preamplifier to compensate for the wide

range of microphone input levels. The AGC allows the full

range of sound, from whispers to loud sounds, to be recorded

with minimal distortion. The “attack” time is determined by the

time constant of a 5 KΩ internal resistance and an external

capacitor (C6 of Figure 5 in Section 11) connected from the

AGC pin to V_SSA. The “release” time is determined by the time

constant of an external resistor (R5) and an external capacitor

(C6) connected in parallel between the AGC pin and V_SSApin.

Nominal values of 470 KΩ and 4.7 µF give satisfactory results

in most cases. Tying this to ground gives maximum gain,

while tying it to V_CCAgives minimum gain for the AGC

amplifier.

ANA IN

Analog Input: The ANA IN transfers an input signal to the

chip for recording. For microphone usage, this ANA IN pin

should be connected via an external capacitor to the ANA

OUT pin. This capacitor value, together with the 3 KΩ input

impedance of ANA IN, is selected to give additional cutoff at

the low-frequency end of the voice passband. If the desired

input is derived from a source other than a microphone, the

signal can be capacitively coupled into the ANA IN pin directly.

ANA OUT

Analog Output: This pin provides the preamplifier output to

the user. The voltage gain of the preamplifier is determined by

the voltage level at the AGC pin.

[2]

Playback, Level-Activated: When this input signal is held

PLAYL

LOW, a playback cycle is initiated, and playback continues

until PLAYL is pulled HIGH, or an EOM marker is detected.

The device automatically powers down and enters into

standby mode upon completion of a playback cycle.

[2]

Playback, Edge-Activated: When a LOW-going transition is

PLAYE

detected on this pin, a playback cycle begins. Taking PLAYE

HIGH during a playback cycle will not terminate the current

cycle. Playback continues until an EOM is encountered. Upon

completion of a playback cycle, the device automatically

powers down and enters into standby mode.

Publication Release Date: April 21, 2005

- 7 -

Revision 1.1

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