LV2283VB Datasheet, PDF (4/10 Pages) Sanyo Semicon Device – Bi-CMOS IC FM Transmitter IC with Stereo Modulation

Block Diagram
LV2283VB
24
23
22
21
20
19
18
17
16
15
14
13
Pre-
emphasis
Switch
Switch
Pre-
emphasis
X'tal OSC
(19K)
VCC
Shift Register X'tal
OSC
(RF2-RF0)
38kHz
38kHz
(P10-P0)
1/2
100kΩ
reset
(MUTE,ST)
1/2
19kHz ^(ATT2-ATT0)
reset
R-Counter
Phase DET
P-Counter
(PILOT)
Attenuator
2.8V
Regulator
Charge Pump
VCO
1
2
3
4
5
6
7
8
9
10
11
12
AC Testing Circuit
SW1
a ^R-INPUT
+
19K OUT
47kΩ
VCC
SW5
SW4
16MHz
3.3kΩ 3.3kΩ
EXTERNAL
CLOCK
INPUTT
b ^1µF
1µF
76KHz
SDA SCL ^270pF
100nF
24
23
22
21
20
19
18
17
16
15
14
13
SG INPUT
1
2
3
4
5
6
7
8
9
10
11
12
SW2
a L-INPUT
+
b ^1µF
+
10µF
VCC
1µF
SW3
100nF a b
390nH RF OUT
100nF
Stereo DEC
VA
No.A0974-4/10