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參數資料
| 型號： | W91030B |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Low Power CMOS IC For Caller indentification(用于通信中呼叫確認的低功耗CMOS集成電路芯片) |
| 中文描述： | TELEPHONE CALLING NO IDENT CKT, PDIP24 |
| 封裝： | 600MIL, PLASTIC, DIP-24 |
| 文件頁數： | 6/31頁 |
| 文件大小： | 306K |
| 代理商： | W91030B |
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Preliminary W91030B
- 6 -
FUNCTIONAL DESCRIPTION
Figure 6 is shown functional blocks of W91030B. The device must operate with a 3.579545 MHz
system clock and consists four major functions and decribed as follows:
Ring Detector
The application circuit in Figure 7-1 illustrates the relationship between the RNGDI, RNGRC and
RNGON signals. The three pin combination is used to detect an increase of the RNGDI voltage from
ground to a level above the Schmitt trigger high going threshold voltage V
T+
.
Figure 7-1. Application Circuit of the Ring Detecter
The RC time constant of the RNGRC pin is used to delay the output pulse of the RNGON pin for a
low going edge on RNGDI. This edge goes from above the V
T+
voltage to the Schmitt trigger low
going threshold voltage V
T-
. The RC time constant must be greater than the maximum period of the
ring signal, to ensure a minimum RNGON low interval and to filter the ring signal to get an envelope
output.
Tip/A
R1 = 470K
C1 = 0.1uF
Ring/B
C1 = 0.1 uF
C3 = 0.22 uF
R5 = 150 K
R2 = 470 K
R3 = 200 K
R4 = 300 K
V
RNGDI
W91030B
RNGRC
RNGON
Allowance minimal ring voltage (peak to peak) is:
Vpp
Tolerance to noise between Tip and Ring and Vss is:
Time constant is:
V
T+(min)
<= V
T+
= 2 (V
T+(max)
(R1 + R3 + R4) / R4 + 0.7)
Vpeak
(max noise)
= V
T+(min)
(R1 + R3 + R4) / R4 + 0.7
T = R5 C3 ln [V / (V - V
T+
)]
<= V
T+(max)
R5 from 10K ohm to 500K ohm.
C3 from 47 nF to 0.68 uF.
DD
DD
V
DD
DD
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相關代理商/技術參數 |
參數描述 |
|---|---|
| W91030B/BS | 制造商:WINBOND 制造商全稱:Winbond 功能描述:Calling Line Identifier |
| W91031 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:LOW POWER CMOS INTERGRATED CIRCUIT |
| W91031S | 制造商:WINBOND 制造商全稱:Winbond 功能描述:Calling Line Identifier |
| W91031SG | 功能描述:IC CALL LINE IDENT 24-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS 產品變化通告:Product Discontinuation 06/Feb/2012 標準包裝:750 系列:* |
| W91031SG (SA5825) TR | 制造商:Nuvoton Technology Corp 功能描述:FSK DECORDER WITH CALL ON WAIT |
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