Basic Information
Component Name List
Component Details
Bluetooth Kit :
Model number: ZT-4390E5
Others Number: c5bf
Bluetooth Frequency: 26 Mhz
Working Principle:
The ZT-4390E5 is equipped to receive a wireless audio signal from a Bluetooth-enabled device. It has been designed to work at a frequency of 26 MHz. The digital signals received are converted to analogue signals and then further sent to the audio amplifier for the amplification process.
The four push switches are used for controlling the Bluetooth module functions such as power ON/OFF, Pairing, Mode change and Volume control.
Audio Amplifier Single IC
IC Total Pin: 24
IC Watt: 8
IC Efficiency: 82%
IC Class: G Boost
The audio amplifier IC is responsible for driving the speaker’s output and making sure that the audio signals that are received from the Bluetooth module or AUX input are amplified enough to be audible. The boAt Stone 1000 uses ft2920P as its main amplifier IC.
Push Button
Headphone Driver IC
IC Number: PT2308 - S
IC Others Number: 1DE4A8
IC Total Pin: 8 Pin
Working Principle:
The PT2308-S is responsible for driving audio signals to the headphone jack. When headphones are plugged in, this IC receives the same audio signals as the main amplifier IC (ft2920P), but instead of amplifying the signal to drive large speakers, it adjusts the signal for headphones, which require less power.
Audio Female Jack (Auxiliary Input)
This type of input grants the ability to connect to a speaker via a 3.5mm jack and is not dependent on Bluetooth technology. This is a substitution for Bluetooth which provides wired audio input.
Function:
If you connect a device using the AUX input, the Bluetooth module will be overridden and the audio signal will get through to the amplifier directly for output through the speakers. It provides a clearer signal path for devices that do not support Bluetooth or for those customers who prefer wired connections.
Charging IC
IC Total Pin: 8 Pin
A charging IC (4056A, for example) is a vital part of the circuit that takes care of the charging of the internal battery making sure that it gets charged properly and also safeguards the circuit from overcharging as well as helps in maintaining a temperature by regulating voltage and current.
Working Principle:
The 4056A IC regulates the 5V charging input from the micro USB charging port to the required charging voltage for the internal battery, it monitors the charging voltage and current, guaranteeing the battery is safely charged without exceeding its limits.
Transistor
Battery
What role does the AUX input play in the amplifier?
The AUX input allows wired audio signals to bypass the Bluetooth module and go directly to the amplifier for output through the speaker.
How does the ft2920P handle loud audio signals?
The ft2920P uses its multi-level power supply to adapt to louder signals, ensuring efficient amplification with minimal heat production.
What other number is associated with the ft2920P IC?
The other number associated with the ft2920P is 200512.
What kind of speakers is the ft2920P designed to drive?
The ft2920P is designed to drive built-in speakers in devices like Bluetooth speakers, with power output sufficient for small to medium-sized speakers.
Can the ft2920P IC handle both Bluetooth and wired (AUX) inputs?
Yes, the ft2920P IC can handle both Bluetooth and AUX inputs for amplification.
What is the purpose of the push switches for the audio amplifier?
The push switches control functions like power on/off, volume control, and mode switching (Bluetooth/AUX), which affect the audio signals processed by the amplifier.
What is the total number of pins on the ft2920P IC?
The ft2920P IC has 24 pins.
What is the maximum wattage rating of the ft2920P amplifier IC in the boAt Stone 1000?
The ft2920P has a maximum wattage rating of 8 watts.
How does the boAt Stone 1000 ensure minimal heat dissipation from the audio amplifier?
The boAt Stone 1000 ensures minimal heat dissipation by using a Class G amplifier (ft2920P), which efficiently manages the power supply and reduces unnecessary heat generation.
How does the battery affect the audio amplifier's performance in the boAt Stone 1000?
The battery provides power to the audio amplifier, and the charging IC ensures it is properly charged to maintain consistent audio performance during wireless operation. The battery backup allows the speaker to function for up to 8 hours without recharging.
FAQs
What is the main audio amplifier IC used in the boAt Stone 1000?
The main audio amplifier IC is ft2920P.
What is the power output of the ft2920P audio amplifier IC?
The power output is 8 watts.
What class of amplifier does the ft2920P belong to?
The ft2920P is a Class G amplifier.
How many channels does the boAt Stone 1000 amplifier support?
The boAt Stone 1000 amplifier is a 2-channel amplifier.
What is the efficiency of the ft2920P amplifier IC?
The efficiency of the ft2920P amplifier IC is 82%.
How does the ft2920P manage power for improved efficiency?
The ft2920P uses a multi-level power supply to switch between different voltage rails, depending on the audio signal's amplitude, which enhances efficiency and reduces heat dissipation.
What type of signals does the ft2920P IC amplify?
The ft2920P amplifies analogue audio signals received from either the Bluetooth module or the AUX input.
What is the function of the two transistors (J3Y and A119V) in the boAt Stone 1000 circuit?
The two transistors assist in signal amplification and switching functions within the audio amplification section.
What is the purpose of the 4056A charging IC for the audio amplifier?
The 4056A charging IC regulates the battery charging process, ensuring the amplifier and other components have adequate power while avoiding overcharging.
How does the Bluetooth module interact with the audio amplifier IC?
The Bluetooth module receives wireless audio signals, converts them to analogue signals, and sends them to the ft2920P audio amplifier IC for amplification.