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MT88E45AS 参数 Datasheet PDF下载

MT88E45AS图片预览
型号: MT88E45AS
PDF下载: 下载PDF文件 查看货源
内容描述: 4线主叫号码识别电路2 ( 4线CNIC2 ) [4-Wire Calling Number Identification Circuit 2(4-Wire CNIC2)]
分类和应用: 电信集成电路光电二极管
文件页数/大小: 27 页 / 116 K
品牌: MITEL [ MITEL NETWORKS CORPORATION ]
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MT88E45  
Advance Information  
Application Circuits  
Tx+  
Tx-  
Microphone  
Speaker  
Telephone  
Hybrid  
TIP  
TIP  
or  
Speech IC  
(Symbolic)  
RING  
RING  
Rx+  
Rx-  
R5  
R3  
R6  
R11  
R10  
MT88E45  
D1  
R1  
C1  
R8 C3  
V
IN2+  
IN2-  
GS2  
CB2  
CB1  
Vdd  
CD  
REF  
D2  
IN1+  
IN1-  
R9 C4  
R12  
D3  
R7  
GS1  
R4  
C2 R2  
= To Microcontroller  
= From Microcontroller  
D4  
Vss  
Vdd  
OSC1  
OSC2  
CB0  
Xtal  
Vss  
C5  
C6  
(FSK Interface Mode 1 selected)  
ST/GT  
EST  
R13  
R14  
DCLK  
DATA  
R15  
R15 is required only if both FSK  
interface mode 0 and power  
down features are used.  
C6 should be  
connected directly  
across Vdd and Vss  
pins  
DR/STD  
D5  
Unless stated otherwise, resistors are 1%, 0.1Watt; capacitors are 5%, 6.3V.  
For 1000Vrms, 60Hz isolation from Tip to Earth and Ring to Earth:  
R1,R2  
430K, 0.5W, 5%, 475V min. C1,C2  
(e.g. IRC type GS-3)  
2n2, 1332V min.  
If the 1000Vrms is handled by other methods then this circuit has to meet the FCC Part 68 Type B Ringer requirements:  
R1,R2  
432K, 0.1W, 1%, 56V min. C1,C2  
2n2, 212V min.  
Common to both sets of R1,R2:  
5V, 0dB gain 3V, -3.5dB gain  
R3,R4  
R8,R9  
R13  
34K  
464K  
825K  
C3,C4  
C5  
C6  
2n2  
100n  
100n, 20%  
R5,R10  
R6,R11  
R7,R12  
53K6  
60K4  
464K  
35K7  
40K2  
309K  
R14  
R15  
226K or 26K1  
100K, 20%  
D1-D4  
D5  
Xtal  
Diodes. 1N4148 or equivalent  
Diode. 1N4148 or equivalent  
3.579545MHz, 0.1% crystal  
or ceramic resonator  
Figure 7 - Application Circuit: Bellcore MEI Compatible Type 2 Telephone  
12