SA647 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

SA647

Low-voltage digital IF receiver

Philips Electronics 

Philips Semiconductors

Low-voltage digital IF receiver

Product specification

SA647

GENERAL APPLICATIONS CIRCUIT

FLT1

R15

24

53

1 R16 R14

R17

R13

R18

R19

C23

C25 20

19

FLT2

R10

24

53

1 R9

R7

R6

C24 C22

18 17

L3

R8

C20

C19 C18

C21

16 15 14 13

GND

C17

12

C16

11

IF

AMP

LIMITER

MIXER

OSCILLATOR

RSSI

RSSI BUFF

R5

+–

LO

BUFF

+–

1

2

3

4

5

6

7

8

9

10

C1

RF

INPUT

C8

C4

C5

C9

C11

R2

C2

L2

L1

R1

C7

C6

R3

C13

C15

R4

C3

LO

INPUT

C12

C14

OSC

OUT

VCC RSSI

POWER LIMITER

DOWN OUT(–)

LIMITER

OUT(+)

C1 5–30pF

C2 5–30pF

C3 0.1mF

C4 0.1mF

C5 0.1mF

C6 0.1mF

C7 47pF

C8 1nF

C9 10pF

C10 3.9pF

C11 0.1mF

C12 6.8pF

C13 0.1mF

C14 30pF

C15 30pF

C16 0.1mF

C17 0.1mF

C18 0.1mF

C19 10nF

C20 1500pF

Component List

C21 10nF

C22 0.1mF

C23 0.1mF

C24 10nF

C25 10nF

R1 10KW

R13 240W

R2 0W (short) R14 4.5KW

R3 OPEN

R15 180W

R4 5.1k

R16 180W

R5 5.1k

R17 240W

R6 0W (short) R18 10KW

R7 1.5KW

R19 10KW

R8 1.5KW

R9 180W

R10 180W

R11 10KW

R12 0KW

1998 Aug 10

NOTE: R2 and R3 set the RSSI buffer gain. For unity gain short R2 (Pin 7 to Pin 8)

and leave R9 open.

Figure 8.

12

L1 180nH

L2 180nH

L3 56mH

FLT1,2 600kHz

SR01730

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