參數(shù)資料
型號: MT8888CN1
廠商: ZARLINK SEMICONDUCTOR INC
元件分類: 信令電路
英文描述: ER 5C 5#16S PIN RECP WALL
中文描述: TELECOM, DTMF SIGNALING CIRCUIT, PDSO24
封裝: 5.30 MM, LEAD FREE, MO-150AG, SSOP-24
文件頁數(shù): 6/25頁
文件大小: 536K
代理商: MT8888CN1
MT8888C
Data Sheet
6
Zarlink Semiconductor Inc.
receiver will tolerate signal interruptions (drop out) too short to be considered a valid pause. This facility, together
with the capability of selecting the steering time constants externally, allows the designer to tailor performance to
meet a wide variety of system requirements.
Figure 5 - Basic Steering Circuit
5.0 Guard Time Adjustment
The simple steering circuit shown in Figure 5 is adequate for most applications. Component values are chosen
according to the following inequalities (see Figure 7):
t
REC
t
DPmax
+t
GTPmax
- t
DAmin
t
REC
t
DPmin
+t
GTPmin
- t
DAmax
t
ID
t
DAmax
+t
GTAmax
- t
DPmin
t
DO
t
DAmin
+t
GTAmin
- t
DPmax
V
DD
V
DD
St/GT
ESt
C1
Vc
R1
MT8888C
t
GTA
= (R1C1) In (V
DD
/ V
TSt
)
t
GTP
= (R1C1) In [V
DD
/ (V
DD
-V
TSt
)]
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