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BA1404 - Stereo FM Transmitter IC
The BA1404 chip is the heart of many low-power FM stereo broadcast band radio transmitter projects. You can find these chips in devices ranging from short-range FM modulators for car radios, to 'pirate radio' transmitters with dozens of miles of range. The BA1404 has the benefit of a wealth of information available online, including plans to help you create a completely legal, low-cost FM stereo transmitter.
BA1404 is a complete stereo FM transmitter in a single chip. It operates on as litte as 1.5 Volts! Add a few external components for a great sounding stereo FM transmitter. Full data sheets and schematics are included.
Click here to view the schematic.
Specifications
 Voltage Supply: 1 - 3V
Power Consumption: 3mA
Separation: 45dB
DIP-18 |
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BH1417 Stereo PLL FM Transmitter IC
ROHM's breakthrough wireless IC series incorporates a stereo modulator, frequency synthesizer and high frequency FM transmitter in one IC. ROHM's industry-first wireless IC series not only cuts board space by more than half, it opens up opportunities as unlimited as the designer's imagination. ROHM's innovative chip series enables portable electronic audio sources such as MP3 players, portable CD players, PDAs, video game players, cell phones, and laptop PCs to be connected to a more powerful audio system without cables or even line of sight technology. The features of numerous integrated functional blocks such as a stereo modulator, phase lock loop frequency synthesizer IC, RF oscillator circuitry and various HF circuits are all incorporated on a single BiCMOS IC. External parts count as well as board real estate is slashed. Performance is also increased with a signal-to-noise ratio of better than 70dB.
Features
Built-in pre-emphasis, audio limiter, audio filter circuit
Built-in PLL frequency synthesizer integrated for stable transmission frequency
Built-in Stereo Encoder
Built-in RF Oscillator
Built-in RF Output Buffer
Free Schematics
Stereo PLL FM Transmitter schematic
Stereo Encoder schematic
Specifications
Voltage Supply: 4-6V
Transmission frequency: 87.7 - 88.9MHz, 106.7 - 107.9MHz, 200kHz steps
Separation: 40dB
SOIC22
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NJM2035 - High Quality Stereo Encoder / Multiplexer IC
NJM2035 IC allows any MONO FM transmitter to transmit a crystal clear STEREO signal. This is the simplest and the most popular stereo encoder that you can build, yet one that provides high quality stereo sound transmission and excellent channel separation.
Specifications
Voltage Supply: 1.2 - 3.6V
Power Consumption: < 3mA
DIP-14 |
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BH1415 - Stereo PLL FM Transmitter
ROHM's breakthrough wireless IC series incorporates a stereo modulator, frequency synthesizer and high frequency FM transmitter in one IC. ROHM's industry-first wireless IC series not only cuts board space by more than half, it opens up opportunities as unlimited as the designer's imagination. ROHM's innovative chip series enables portable electronic audio sources such as MP3 players, portable CD players, PDAs, video game players, cell phones, and laptop PCs to be connected to a more powerful audio system without cables or even line of sight technology. The features of numerous integrated functional blocks such as a stereo modulator, phase lock loop frequency synthesizer IC, RF oscillator circuitry and various HF circuits are all incorporated on a single BiCMOS IC. External parts count as well as board real estate is slashed. Performance is also increased with a signal-to-noise ratio of better than 70dB.
BH1415F Features
Built-in pre-emphasis, audio limiter, audio filter circuit
Built-in PLL frequency synthesizer integrated for stable transmission frequency
Built-in Stereo Encoder
Built-in RF Oscillator
Built-in RF Output Buffer
Specifications
Voltage Supply: 4-6V
Transmission frequency: 70 - 120MHz 100KHz Steps
Separation: 40dB
SOIC22
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SAA1057 - PLL Frequency Synthesizer IC
Single chip frequency synthesizer that provides PLL tuning for transmitters and receivers.
Specifications
FM Frequency Tunning: 70 - 120MHz
AM Frequency Tunning: 512KHz - 32MHz
Voltage Supply: 3.6 - 12V
Power Consumption: 20mA
DIP-18
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