Figure 9. Typical Application Circuit For Bellcore" />
參數(shù)資料
型號(hào)： IDTNW6005ASG
廠商： IDT, Integrated Device Technology Inc
文件頁(yè)數(shù)： 20/20頁(yè)
文件大?。?/td> 0K
描述： IC CALLER ID DECODER 20SOIC
標(biāo)準(zhǔn)包裝： 37
類型： 來(lái)電身份解碼器
應(yīng)用： 傳真，調(diào)制解調(diào)器，尋呼機(jī)
電壓 - 電源，模擬： 2.5 V ~ 3.8 V
電壓 - 電源，數(shù)字： 2.5 V ~ 3.8 V
安裝類型： 表面貼裝
封裝/外殼： 20-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 20-SOIC
包裝： 管件
9
INDUSTRIAL TEMPERATURE RANGE
NW6005 ENHANCED TYPE II CALLER ID DECODER
APPLICATION INFORMATION
Figure 9. Typical Application Circuit For Bellcore MEI Compatible Type II Telephone, 5 V Operation
NW6005
VREF
IN1+
IN1-
GS1
GND
OSCIN
OSCOUT
CB0
DCLK
DATA
IN2+
IN2-
GS2
CB2
CB1
VCC
CD
ST/GT
EST
DR/STD
Telephone
Hybrid
TIP
RING
Tx+
Tx-
Rx-
Rx+
Speaker
R1
R2
TIP
RING
C1
C2
39k
470k
56k
GND
470k
2n2
56k
330k
R3
R4
100n
100n,
20%
VCC= 5V +/-10%
FSK Interface Mode 1 is selected
Xtal
To Microcontroller
From Microcontroller
470k
Microphone
Note:
1. Resistors are 1%, 0.1Watt; Unless stated, capacitors are 5%, 6.3 V.
2. All diodes in the circuit are 1N4148 or equivalent.
3. Xtal is 3.579545 MHz, 0.1% crystal or ceramic resonator.
4. Tip/Ring op amp gain = 0 dB; Hybrid Receive op amp gain = -3 dB.
5. For 1000 Vrms, 60 Hz isolation from Tip to Earth and Ring to Earth:
R1, R2 = 430 k, 0.5 W, 5%, 500 V min.
C1, C2 = 2n2, 250 V min.
6. For BT application, R3=R4= 422k;
For Bellcore application, R3=825k, R4=226k.
A
B
In FSK mode 1, the received byte is stored in an on-chip register.
The microcontroller supplies read pulses (DCLK) to shift the register
contents serially out of the NW6005, onto the DATA pin. The DR pin is
also used to indicate the word boundary.
VALID DT-AS EVALUATION
DT-AS output will generate false detection if being interfered by
speech. In this way, valid DT-AS pulse evaluation becomes necessary.
The evaluation defines a minimum and maximum pulse duration,
and maximum drop out time within that pulse duration. See Figure 21
for reference.
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