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
| Easy Radio ICTM LV24000 Series |
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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.
An
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.
Application Example
Cell phone (1) |
| Cell phone (2) | ||||
LV24000: FM radio function | LV24002: FM radio + source selector | |||||
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Cellular |
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| Phone |
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Phone | Source | Volume |
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Head Amp | ||||||
| Selector | |||||
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Featuring
●Absolutely no external components required
●Absolutely no adjustments required
●Low IF frequency (110 kHz) adopted for improved selectivity
●No FM detection discriminator required
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●New tuning technique
●Ultrahigh sensitivity reception achieved by
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●RDS composite output
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●Digital AFC function
●Soft muting and
●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)
| Source | Volume | Head Amp | |
(Basic) | Selector | |||
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| FM |
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FM | LV24002 |
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LV24000 |
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LV24002 Block diagram
LV24002 |
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| Quadrature |
| Tuning |
| Power |
| Stabilisator |
| Oscillator |
| System |
| Switch |
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Not only reducing the device prices
but also reducing the various costs during development
■Comparison with earlier products
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| Including All the Functions | |
No external | ● FM function (LV24020) | ||
● FM+AM function (LV24100) | |||
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requried |
| ● FM+RDS function (LV24010) | |
Earlier products | SANYO Easy Radio ICTM | ● FM+amplifier function (LV24003) | |
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| LV24000 |
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*: A separate coil is required for applications that include an AM radio
FM Ant. |
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| Quadrature |
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| Selectivity |
| Demodulator |
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| Deemphasis |
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| Mixer |
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| Decoder |
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| Selector |
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| Headphone |
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| Beep |
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| Amplifier |
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| Generator |
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| Interface |
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| CLK | NR_W |
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| DATA |
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HEADPHONE L HEADPHONE R
16 |
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