System-On-Chip Fm Radio Ics For Miniature Cell Phones - Sanyo EP92H Brochure

An FM radio can be easily included in a limited space in a small product
System-on-chip FM Radio ICs
for Miniature Cell Phones
FM Radio IC
TM
Easy Radio IC LV24000 Series
The LV24000 family devices are FM radio ICs that require absolutely no external components.*
These devices include not only the FM radio function, but source selector, master volume control, tone controls,
headphone amplifier, and other functions in the same tiny 5.0 × 5.0 × 0.8 mm
These ICs are superb for adding new FM radio functionality in the small limited space available in existing products,
such as cell phones and other portable electronic equipment.
Featuring
Absolutely no external components required
Absolutely no adjustments required
Low IF frequency (110 kHz) adopted for improved
selectivity
No FM detection discriminator required
Built-in adjacent channel interference function (114 and
190 kHz)
New tuning technique
Ultrahigh sensitivity reception achieved by low-noise
mixer input circuit
Low-current standby mode obviates the need for a power
supply switch
RDS composite output
Three-wire bus interface adopted (clock, data, and NR-W)
Digital AFC function
Not only reducing the device prices
but also reducing the various costs during development
Comparison with earlier products
No external
components
requried
Earlier products
SANYO Easy Radio IC
*: A separate coil is required for applications that include an AM radio
16
New
product
3
VQLP package.
Soft muting and high-blend stereo (3-stage
programmable)
Supports manual search, automatic search, and auto-
preset functions
Supports reception in all regions worldwide (all Japanese,
European, and US bands can be received by changing
just the software)
Master volume control
FM: 76 to 108 MHz
Source selector function (LV24001)
Headphone amplifier (LV24002)
Including All the Functions
FM function (LV24020)
FM+AM function (LV24100)
FM+RDS function (LV24010)
FM+amplifier function (LV24003)
TM
LV24000
An adjustment-free FM radio function can be included with absolutely no external components.
3
Since an ultraminiature 5.0 × 5.0 × 0.8 mm package is used, this device is extremely useful for including an FM radio function in
cell phones, PDAs, memory audio players, and other portable electronic equipment.
Application Example
Cell phone (1)
LV24000: FM radio function
Cellular
Phone
Source
Volume
Head Amp
Selector
(Basic)
FM
LV24000
LV24002 Block diagram
LV24002
Tuning
Quadrature
System
Oscillator
FM Ant.
Quadrature
Selectivity
Demodulator
Mixer
Volume
Source
L
LINE-IN & Tone
Selector
Control
R
LINE-IN
Beep
Generator
Digital
Interface
NR_W
CLK
DATA
Cell phone (2)
LV24002: FM radio + source selector
+ headphone amplifier functions
Cellular
Phone
Source
Head Amp
Volume
Selector
FM
LV24002
Power
Stabilisator
Switch
Stereo
Deemphasis
Decoder
L
LINE-OUT
R
LINE-OUT
Headphone
HEADPHONE
Amplifier
HEADPHONE
L
R
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