Product information
BT201 Bluetooth module uses KT1025A chip
KT1025A
is a 4-in-1 single chip that supports bluetooth, usb flash drive and TF
card. The best part about the chip is the lossless music playback, and
simple serial interface AT control function, BLE transparent
transmission function and SPP transparent transmission function. It
greatly reduces the development difficulty of embedded bluetooth in
other products
Model number：BT201
Chip model number：KT1025A-QSSOP24 stereo
Frequency Range：2.4G-2.480G
Operating Voltage：3.3V-5V
Transmit power：4dbm
External speakers：Support 4 ohm 3W and below speakers
Humidity：5% -95%
Working temperature：-40 ℃ -80 ℃
Reference distance：10 meters
Baud rate：9600-256000 (factory default baud rate of the chip is 115200)
16-bit Stereo DAC with headphone amplifier, SNR >= 95dB
Crystal-free load capacitor, the chip automatically generates Bluetooth MAC address without rolling programming
Support MP3, WAV, WMA, FLAC, AAC, APE full decoding
Support 128G U disk and TF card, support breakpoint memory and track memory function
Support Bluetooth audio transmission, connect mobile phone to transfer music, support playback pause, up and down song switching
Support Bluetooth call function, user can set cancel, support answer, hang up, call back, reject and other functions
Bluetooth 5.0 version, support HFP / A2DP / AVRCP / HSP / GAVDP / IOP / SPP / BLE, distance is about 10M
Class2 4dbM frequency range is 2.4G--2.480G
Support BLE transparent transmission function, separately connect "BT201-BLE" Support SPP transparent transmission function
The
chip uses the SOC solution, which integrates a 32-bit MCU and an aDSP
specifically for audio decoding. The hard decoding method is used to
ensure the stability and sound quality of the system. Small package size
better meets the needs of embedding other products
MP3 file format
1.Support all bit rate 11172-3 and ISO13813-3 layer3 audio decoding
2.Sampling rate support (KHZ): 8 / 11.025 / 12/16 / 22.05 / 24/32 / 44.1 / 48
3.Support Normal, Jazz, Classic, Pop, Rock and other sound effects
USB interface：2.0 standard
UART
interface Standard serial port, TTL level, baud rate can be set, level
conversion is required to connect PC [eg: CH340G--USB to TTL]
Input voltage：3.3V-5V [7805 post stage diode is best]
Rated current：20MA [static]
Low power consumption <200uA
Module power amplifier power：Drive 4 ohm 3W speaker, use HX8358 chip [5W digital power amplifier]
Chip DAC driver：The main chip DAC can only drive headphones
Technical Data - Drivers
https://drive.google.com/open?id=1mlRY6rSlg2HRfW6WnQHuxupsyLbadPpN
Package Included:
1 X BT201 Dual Mode 5.0 Bluetooth Lossless Audio Power Amplifier Board Module Tf Card
Instructions/schematic
are NOT included. We don't provide technical assistance please make
sure that you are familiar with the product before purchasing.
