ZL20200 datasheet(8/51 Pages) ZARLINK

Part #	ZL20200

Description	Dual Band IS136/AMPS Transceiver

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Manufacturer	ZARLINK [Zarlink Semiconductor Inc]

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ZL20200

Data Sheet

8

Zarlink Semiconductor Inc.

1.0

General Description

A detailed block diagram is shown in Figure 3. This shows the receive and transmit paths plus the LO generation

circuitry. Control is via a serial bus with the addition of direct inputs to control receive and transmit modes and

optimize power consumption.

Figure 3 - ZL20200 Detailed Block Diagram

RSSI

RX Q+

RX Q–

π/2

Serial

interface

AMPS demod.

and RSSI

LO Select

and

Doubler

60kHz

PLL

π/2

Control

43

44

RX I+

RX I–

45

46

41

42

40

FM OUT

FM FB

32

33

27

28

1

2

3

TX I+

TX I–

TX Q+

TX Q–

SDAT

SCLK

SLATCH

56

34

20

11

10

21

26

25

22

23

VCC CONTROL

TX RXB

ENABLE2

ENABLE1

RESETB

24

15

17

18

19

16

TX 900

TX 1900

51

55

54

9

8

12

14

6

RX GAIN

IF1 IN+

IF1 IN–

1900

LO OUT

900

LO OUT

900 LO IN

1900 LO IN

13

29

35

4

39

48

31

38

49

47

37

30

TCXO

I SET

VCC RX PLL

VCC TX PLL

VCC VHF CP

7

50

5

36 LOCK DET

MUX

Option

Tank

Circuit

Tank

Circuit

Control

Σ

÷ N

π/2

Loop

Filter

Loop

Filter

Loop

Filter

Option

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