国产精品成人VA在线观看-国产乱妇乱子视频在播放-国产日韩精品一区二区三区在线-国模精品一区二区三区

參數(shù)資料
型號(hào)： W91030
廠(chǎng)商： WINBOND ELECTRONICS CORP
元件分類(lèi)： 無(wú)繩電話(huà)/電話(huà)
英文描述： Low Power CMOS IC For Caller indentification(用于通信中呼叫確認(rèn)的低功耗CMOS集成電路芯片)
中文描述： TELEPHONE CALLING NO IDENT CKT, PDIP24
封裝： 0.600 INCH, PLASTIC, DIP-24
文件頁(yè)數(shù)： 8/30頁(yè)
文件大?。?/td> 359K
代理商： W91030
Preliminary W91030
- 8 -
Input Pre-processor
The input signal is processed by an Input Pre-Processor, which is added to the offset voltage to adjust
the input amplitude and to filter out unwanted frequencies. The gain control op-amp is used to bias
the input voltage with the VREF signal voltage. VREF is V
DD
/2 typically. It is also used to select the
input gain by connecting a feedback resistor between this pin and the INN pin. Figure 7-2 shows the
necessary connections with the tip/ring line inputs. In a single-ended configuration, the gain control
op-amp is connected as shown in Figure 7-3.
INP
INN
+
-
GCFB
R1
C1
C2
R2
R4
R3
R5
VREF
Tip
Ring
W91030
Differential Input Amplifier
C1 = C2
R1 = R2
R3 = (R4 R5) / (R4 + R5)
Voltage Gain
Av = R5 / R1
Input Impedance
Zin = 2 R
2
+ (1 / wC)
2
1
Figure 7-2 Differential Input Gain Control Circuit
C
R1
R2
Input
+
-
INP
INN
GCFB
VREF
Voltage Gain
A
V
= R2 / R1
W91030
Figure 7-3 Single-ended Input Gain Control Circuit
Dual Tone Alert Signal Detection
The dual tone alert signal is separated into high and low tones and detected by a high/low tone
detector. The dual tone alert signal detection circuit is enabled when the FSKE signal is low. It
requires an enable time to enable the dual tone alert signal detector when FSKE goes from high to
low. The ALGR is the output of the dual tone detector and when high indicates that the high tone and
low tone alert signals have been detected. The guard time improves detection performance by
rejecting detected signals with insufficient duration and by masking momentary detection dropout.
Figure 7-4 shows the relationship between the ALGR, ALGRC and ALGO pins and Figure 7-5 shows
the guard time waveform of the same pins. The total recognition time is t
REC
= t
DP
+ t
GP
, where t
DP
is
the tone present detect time and t
GP
is the tone present guard time. The tone present guard time is
the RC time constant with the capacitor discharging from V
SS
to V
DD
( the ALGRC pin discharges
from V
SS
to V
DD
through a resistor). The capacitor will discharge rapidly via a discharge switch after
ALGO returns high. The total absent time is t
ABS
= t
DA
+ t
GA
, where t
DA
is the tone absent detect time
and t
GA
is the tone absent guard time. The tone absent guard time is the RC time constant with the
capacitor charging from V
DD
to V
SS
(the ALGRC pin charges from V
DD
to V
SS
through a resistor). The
capacitor will charge rapidly via a charge switch after ALGO returns low. To obtain unequal present
and absent guard times, a diode can be connected as shown in Figure 7-6, to give the unequal
resistance required during capacitor charging and discharging.
相關(guān)PDF資料
PDF描述
W91031 LOW POWER CMOS INTERGRATED CIRCUIT
W91031S Calling Line Identifier
W91080 Tone/Pulse Dialer With Handfree And Keytone Fuctions And One Number Memory(具有一個(gè)數(shù)碼存儲(chǔ)器免提和主鍵音功能的音頻/脈沖撥號(hào)器)
W91080A Tone/Pulse Dialer With Handfree And Keytone Fuctions And One Number Memory(具有一個(gè)數(shù)碼存儲(chǔ)器免提和主鍵音功能的音頻/脈沖撥號(hào)器)
W91082N Tone Generator With μC Serial Interface(具有微控制器接口的音頻發(fā)生器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W91030B 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:CALLING LINE IDENTIFIER
W91030B/BS 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:Calling Line Identifier
W91031 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:LOW POWER CMOS INTERGRATED CIRCUIT
W91031S 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:Calling Line Identifier
W91031SG 功能描述:IC CALL LINE IDENT 24-SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*