SA58641 Datasheet, PDF (12/17 Pages) NXP Semiconductors – High performance mixer FM IF system with high-speed RSSI

Philips Semiconductors
High performance mixer FM IF system
with high-speed RSSI
Objective data
SA58641
SMA
RF IN
J1
110.592MHz
+/–288kHz
C1
5–30pF
L1
180nH
C2
10nF
SMA
LO IN
120.392MHz
C4
1nF
C3
1nF
@–10dBm
J2
R1
51
R3
22k
R4
33k
+3V
V_CC
GND
J3
RSSI
R2
10
C5 ⁺
15µF
C6
100nF
PWR DWN
DATA OUT
L4
680nH
U1
1 RF IN
2 RF BYPASS
3 ^XTAL
OSC (EMITTER)
4
XTAL
OSC (BASE)
5 V_CC
6 RSSI FEEDBACK
C20
68pF
C19
MIXER OUT 20
1nF
IF AMP ₁₉
DECOUPLING 1
IF IN ¹⁸
IF AMP ₁₇
DECOUPLING 2
IF OUT ₁₆
GROUND 15
C21
330pF
C18
68pF
C17
1nF
C16
100pF
7 _{RSSI OUT}
8 PD CTRL
LIMITER IN ¹⁴
LIMITER DEC1 13
C13
100pF
9 _{DATA OUT}
LIMITER DEC2 ¹²
10 QUAD IN
SA58641
LIMITER OUT 11
C7
470pF
+
R5
C8
1.2k
5-30pF
C9
82pF
C10
15pF
L2
2.2µH
C11 C12
1nF 1nF
C14
47pF
C15
330pF
L3
680nH
R6
560
2004 Dec 16
Figure 10. SA58641 110.592 MHz (RF) / 9.8 MHz (IF) DECT Application Circuit
12
SR02526