Mini FM stereo receiver module(Power-down memory frequency volume / DSP receiving technology / powerful)
(Product code: 007M)
Although the sparrow is small, it has all five internal organs, and it is designed with care. It is by no means a simplified version!
Single-chip control, ultra-small size, DSP FM stereo receiver, can directly push the earphone, the sound is loud and bright, the sound quality is good, and the receiving sensitivity is high. The single-chip microcomputer controls the frequency lock, the frequency is super stable and does not run frequency, button operation, simple to use, no automatic noise suppression, power-down memory frequency volume, suitable for making community broadcast receivers, miniature FM stereo radios, square dance receivers, etc. .
There are currently two versions of the module:
3V battery-powered version: working voltage 2.2V-3.6V
3.7V lithium battery powered version: working voltage 2.9-4.3V
This module uses the headphone cable as the receiving antenna; if you want to follow up the power amplifier, you need to connect a one-meter-long soft wire or whip antenna to the headphone base ground wire as the receiving antenna.
![](https://img.alicdn.com/imgextra/i4/12672811/TB29so0hhXlpuFjSsphXXbJOXXa_!!12672811.jpg)
![](https://img.alicdn.com/imgextra/i1/12672811/TB2aqAUhhdkpuFjy0FbXXaNnpXa_!!12672811.jpg)
Note: This module is hand-soldered but the quality is reliable, if you are not satisfied, please do not take it!
Powerful:
1,Real power-down memory frequency and volume function,Disconnect the power supply and power it on again to still receive the working frequency before the power loss and maintain the volume before the power loss.
2,No noise suppression function,When the FM transmitter is turned off, the audio output of the module remains quiet and there is no noise. The transmitter is turned on to continue to receive the frequency, which is very suitable for the residential FM broadcast system.
3.With tuning indicator,The indicator lights up when the station is received.
4.With tuning indicator output pad,The pad outputs a low level when receiving the station, which is convenient for controlling other circuits(Such as audio power amplifier circuit).
The main parameters:
Dimensions: 10mmx28mm
Operating Voltage:
3V battery-powered version: 2.2V-3.6V
3.7V lithium battery powered version: 2.9-4.3V
Working current: static 25mA
Receiving range: 76-108MHz FM stereo broadcast(Can receive campus broadcast)
Other functions: Sensitivity is better than 3 microvolts, DSP receiving technology is adopted, with good selectivity and strong anti-interference ability.
Audio output power: 2x10mw, availableDirectly connect headphones, the volume is enough, no need to connectAudio driver is amplified.
Frequency/volume adjustment method: button adjustment.
Antenna connection method: the earphone wire can also be used as a receiving antenna, or an external antenna can be connected to the base of the earphone holder.
Highly integrated receiver IC, DSP FM stereo receiver, all SMD components, ultra-small single-chip control, more stable performance, no frequency drift,Small size, powerful function,Easy to use, suitable for all kinds of micro-receiving occasions.
There are two buttons on the reverse side of the module from left to right:
U: Frequency/Volume +, short press to search for stations upward, long press to increase volume.
D:Frequency/Volume-, short press to search for radio stations downwards, long press to decrease the volume.
Press the U and D buttons at the same time to turn off the power.