The 87-108MHz FM Stereo Digital Radio Circuit Board is a compact and efficient module designed for high-quality FM radio reception. With features like PLL digital frequency lock, 30-level digital volume control, and full coverage from 76.0MHz to 108.0MHz, this circuit board offers a robust and reliable performance. It supports both manual and automatic search functions, and it also includes a power-off memory for volume and frequency settings. This module is ideal for DIY radio projects, providing stereo audio output and a simple interface for easy operation.
Specifications of 87-108MHz FM Stereo Digital Radio Circuit Board
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Output Power: 500mW (drives headphones)
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Frequency Response Range: 50Hz-18KHz
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Channel: Stereo
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Receiving Frequency Adjustment Range:
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Campus Broadcast Off: 87.0MHz-108.0MHz
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Campus Broadcast On: 76.0MHz-108.0MHz
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Equivalent Noise: ≥30dB
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Supply Voltage: 3.0V-5.0V
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Current: 40mA
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Size: 40 x 22.5 mm
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Features:
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PLL digital frequency lock
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30-level digital volume control
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Automatic search and storage function
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Power-off memory for volume and frequency
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Mono/Stereo control
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Serial command control support
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Pinout of 87-108MHz FM Stereo Digital Radio Circuit Board
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(L): Left channel audio output
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(G): Audio ground
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(R): Right channel audio output
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(V+): Short press for volume + / long press for continuous +
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(V-): Short press for volume - / long press for continuous -
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(F+): Short press for next station / long press to search for a station
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(F-): Short press for the previous station / long press to search for a station
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(P): Short press for mute / long press for full band search and save station
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(DM): USB DM cable
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(DP): USB DP data cable
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(TX): TTL serial port sender
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(RX): TTL serial port receiver
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(+5V): 5V power input (3-5V wide range)
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(G): Power ground
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(ANT): External FM radio antenna end
This module is ideal for a variety of audio projects, providing reliable performance and easy integration into existing systems.