MT88E39 데이터 시트보기 (PDF) - Zarlink Semiconductor Inc

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MT88E39

Calling Number Identification Circuit

Zarlink Semiconductor Inc 

MT88E39

Data Sheet

TIP

C1

C2

RING

100 nF

10%

50 V

330 nF R10

10%

250 V

R1

R3

D5

D7

D6

D8

Vdd

D1

R2

D2

Vdd

D3

R4

D4

1N5231B

Vdd

Motorola

4N25 464 K

5%

R5

100 nF

20%

200 K

5%

R7

R6

Xtal

MT88E39

IN+

IN-

GS

VRef

CAP

OSC1

OSC2

VSS

VDD

IC

MODE

PWDN

CD

DR

DATA

DCLK

Vdd

100 nF

20%

Vdd Vdd

R8*1 R9*1

(FSK interface mode 0 selected)

(Ring Detect)

10 nF

To microcontroller

= To microcontroller

= From microcontroller

Note:

*1 R8 and R9 not required when FSK interface mode 1 is selected.

Unless stated otherwise, resistors are 1%, 0.1 Watt; capacitors are 5%, 6.3 V

D1, D2, D3, D4 = diodes, 1N4003 or 1N4148 or equivalent

D5, D6, D7, D8 = bridge rectifier diodes, 1N914

Xtal = 3.579545 MHz, +/-0.2%

R8 = R9 = 100 K, 20%

R10 = 12K1, 1W5, 5%, Fusible resistor

R2 = R4 = 34 K

For 1000 Vrms, 60 Hz isolation from Tip to Earth and Ring to Earth:

R1 = R3 = 430 K, 0.5 W, 5%, 475 V minimum. e.g., IRC Type GS-3

C1 = C2 = 2 n2, 1332 V minimum

If the 1000Vrms is met by other means, then this circuit has to meet FCC part 68 Type B Ringing:

R1 = R3 = 432 K, 0.1 W, 1%, 56 V minimum

C1 = C2 = 2n2, 212V minimum

Example of component values for Vdd = 5 V +/- 10%

For Bellcore applications, set input gain = 0 dB:

For ETSI applications, set input gain = -2.5 dB:

R5 = 53K6

R5 = 53K6

R6 = 60K4

R6 = 63K4

R7 = 464K

R7 = 348K

Example of component values for Vdd = 3 V +/- 10%

For Bellcore applications, set input gain = -3 dB:

For ETSI applications, set input gain = -5.5 dB:

R5 = 44K2

R5 = 44K2

R6 = 51K1

R6 = 53K6

R7 = 332K

R7 = 249K

Figure 6 - Application Circuit

7

Zarlink Semiconductor Inc.

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