IDTNW6006AS【PDF 3/22 页】IC CALLER ID DECODER 20-SOIC

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INDUSTRIAL TEMPERATURE RANGE

NW6006 ENHANCED TYPE II CALLER ID DECODER

WITH STUTTER DIAL TONE DETECTOR

Figure 10. Typical Application Circuit For Bellcore MEI Compatible Type II Telephone

with Stutter Dial Tone Detection, 3 V Operation

NW6006

VREF

IN1+

IN1-

GS1

GND

OSCIN

OSCOUT

CB0

DCLK

DATA

IN2+

IN2-

GS2

CB2

CB1

VCC

CD/STRDT

ST/GT

EST

DR/STD

Telephone

Hybrid

TIP

RING

Tx+

Tx-

Rx-

Rx+

Speaker

TIP

RING

39k

282k

56k

GND

470k

2n2

56k

200k

100n

100n,

20%

VCC= 3V +/-10%

FSK Interface Mode 1 is selected

Xtal

To Microcontroller

From Microcontroller

282k

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.

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