Philips Semiconductors

Product specification

SA636

Low voltage high performance mixer FM IF system

with high-speed RSSI

1997 Nov 07

12

10

9

8

7

6

5

4

3

2

1

20

19

18

17

16

15

14

13

12

11

RF IN

RF BYPASS

OSC (EMITTER)

OSC (BASE)

RSSI FEEDBACK

RSSI OUT

PD CTRL

DATA OUT

QUAD IN

VCC

MIXER OUT

DECOUPLING 1

IF IN

DECOUPLING 2

GROUND

LIMITER IN

LIMITER DEC1

LIMITER DEC2

LIMITER OUT

IF OUT

SMA

LO IN

SMA

RF IN

110.592MHz

120.392MHz

C5

C6

+

R1

51

C3

1nF

C2

PWR DWN

VCC

L1

180nH

C1

5–30pF

U1

SA636

R5

1.2k

C9

82pF

L2

C10

15pF

C11

C12

10nF

100nF

1nF

1nF

15

µF

2.2

µH

XTAL

XTAL

IF AMP

IF AMP

J1

+/–288kHz

J2

@–10dBm

C4

1nF

R2

10

+3V

R3

22k

R4

33k

RSSI

DATA OUT

GND

J3

C7

470pF

C8

+

5-30pF

C13

100pF

C14

47pF

C15

330pF

L3

680nH

R6

560

C16

100pF

C17

1nF

C19

1nF

L4

680nH

C21

330pF

C18

68pF

C20

68pF

SR00500

Figure 10. SA636 110.592MHz (RF) / 9.8MHz (IF) DECT Application Circuit