LV24230LS Datasheet, PDF (15/17 Pages) Sanyo Semicon Device – Compact Portable Equipment 1-Chip FM Tuner IC

Application Circuit
LV24230LS
Not necessary
when the CD cut capacity
is on the receive side
Line_out_R 1μF
4.7μH
or
22μF 0.1μF R:4.7Ω
Changeover of resistor
possible depending on the
18 17 16 15 14 13
state of power supply
External_CLK_IN
VCC
Voltage
SW
19
12
Source
Line_out_L 1μF
20
11
FM_ANT
Package
GND
GND
21
22
23
24
1
Top View
2345
10
9 _Package
8
GND
SCL
7
6
100 to
1μH 1000pF
27pF
47pF
120nH
Winding type
R1 R2 R3 R4
VDD
Voltage
Source
2.2μH
or
SW
R:12Ω
Changeover of resistor
possible depending on the
state of power supply
0.1μF
Voltage for I²C
interface pull-up
R6
R5
I²C_Bus
MPU
Cautions for mounting of IC
Note1 : For external part constant, the recommended value is described. Since the constant may differ during actual use
with the set mounted, be sure to consider optimization.
Note2 : The differential input antenna application is described. Single input with pin 1 only is also possible.
Note3 : If the spike noise between MPU and IC is large during communication, it is recommended to add limiting
resistors R1, R2, and R3 between MPU and IC. 0Ω at 1.8V.
Note4 : To reduce noise from power supply, add a capacitor between VCC - GND and between VDD - GND.
Note5 : The I²C bus communication line requires pull-up resistors R5 and R6. The commonly-employed resistance value
is 2.2k. Set the pull-up voltage to the same one of VIO of LV24230LS. (Supply from the same source as VIO and
VDD is recommended.
Note6 : Please use the INT pin arbitrarily. Recommended to open when unused.
The INT pin becomes unstable at IC startup. To protect MPU from any effects during startup, it is recommended
to add either the pull-up or pull-down resistor to set the non-active mode. (This is not necessary when the MPU
can be set to non-active by a software during initialization.
No.A1989-15/17