YD2149 Datasheet, PDF (6/7 Pages) Wuxi Youda electronics Co.,LTD – AM/FM 1 CHIP TUNER IC

YOUDA INTEGRATED CIRCUIT
TWES CIRCUIT
YD2149
AM RF IN
2k
0.022uF
OSC OUT
VT
SW8
8V
2SC1923
IF OUT
5V
2SC1815
2.4k
DET OUT
MPX IN
+
Vcc
+
SW4
SW7
SW5
24
23
FM RF OUT RF Vcc
22
AM RF IN
21
FM OUT
20
19
AM OUT OSC OUT
18
ST LED
17
IF REQ
16
15
DET OUT MPX IN
YD2149
14
LPF1
13
LPF2
RF GND FM RF IN AM LOW CUT MIX OUT
Vcc
AM IF IN FM IF IN
1
2
3
4
5
6
7
GND
8
AGC
9
QUAD
10
R-OUT
11
L-OUT
12
+
0.033uF
+
SW2
T2
CF1
CF2
CR
+
SW3
LPF
330
4.7k
SW1
FM RF IN
BPF
FM IF IN 270
Vin
Vin
WuXi YouDa Electronics Co., Ltd
6 of 7
Website: www.e-youda.com