Sanyo EP92H User's Manual | Page 9

Sanyo Cell Phone User's Manual - EP92H.
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An adjustment-free FM radio function can be included with absolutely no external components.
Since an ultraminiature 5.0 × 5.0 × 0.8 mm3 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.

17

16

System-on-chip FM Radio ICs 
for Miniature Cell Phones

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 mm3 VQLP package.
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

LV24002

LINE-IN

 L

LINE-IN

 R

CLK

DATA

NR_W

HEADPHONE

 L

HEADPHONE

 R

LINE-OUT

 L

LINE-OUT

 R

 

Quadrature

Oscillator

Quadrature

Mixer

Selectivity

Demodulator

Stabilisator

Power
Switch

Stereo

Decoder

Deemphasis

Source 
Selector

Beep

Generator

Headphone

Amplifier

Volume 

& Tone
Control

Tuning
System

Digital

Interface

FM Ant.

LV24002

Cellular

Phone

Head Amp

Cell phone (1)
LV24000: FM radio function

Cell phone (2)
LV24002: FM radio + source selector 
+ headphone amplifier functions

LV24000

Source
Selector

Source
Selector

Volume

Volume

Head Amp

FM

FM

Cellular

Phone

(Basic)

Earlier products

No external 
components
requried

SANYO Easy Radio ICTM

LV24000

Including All the Functions

● 

FM function (LV24020)

● 

FM+AM function (LV24100)

● 

FM+RDS function (LV24010)

● 

FM+amplifier function (LV24003)

Not only reducing the device prices 

but also reducing the various costs during development

● 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

● 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)

FM Radio IC

New

product

Easy Radio IC

TM

LV24000 Series

Application Example

LV24002 Block diagram

■ 

Comparison with earlier products

*: A separate coil is required for applications that include an AM radio

An FM radio can be easily included in a limited space in a small product

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