KT1025A Bluetooth Audio Chip

The KT1025A chip is a 4-in-1 single chip that supports Bluetooth, U-disk, and TF card playback. It adopts a 55-nanometer production process chip.The chip supports for lossless music decoding playback, along with simple and clear serial port control functions, supporting BLE transparent transmission and SPP transparent transmission capabilities.

Chinese Name: KT1025A Chip

Brand: KT

Product type: Bluetooth chip

Function: Supports Bluetooth and playback via USB flash drives and TF cards

I. Introduction 

The KT1025A chip is a 4-in-1 single chip that supports Bluetooth, U-disk, and TF card playback. It adopts a 55-nanometer production process chip.The chip supports for lossless music decoding playback, along with simple and clear serial port control functions, supporting BLE transparent transmission and SPP transparent transmission capabilities.

II. Function 

1.General Functions

1) 16-bit Stereo DAC with headphone amplifier, SNR >= 95dB  

2) Crystal-free load capacitance, chip automatically generates Bluetooth MAC address

2.Music Functions

1) Supports lossless full decoding of MP3, WAV, WMA, FLAC, AAC, APE formats  

2) Supports up to 128GB U-disk and TF card, with external SPI Flash for storage.

3.Bluetooth Function Features

1) Supports Bluetooth audio transmission to connect to a phone for music playback, supports play/pause, previous/next track switching  

2) Supports Bluetooth call functions, user can enable/disable, supports answer, hang up, redial, reject, and other functions  

3) Bluetooth 5.0 version, supports HFP/A2DP/AVRCP/HSP/GAVDP/IOP/SPP/BLE, range about 10 meters  

4) Class 2, 4dBm, frequency range 2.4G–2.480G  

5) Supports BLE transparent transmission function, standalone connection to “BT201-BLE”; supports SPP transparent transmission function

III. Application Market

1.Bluetooth Audio Products e.g., Bluetooth speakers, Bluetooth headsets, car Bluetooth systems, etc.  

2.Bluetooth Data Transmission Products e.g., smart door locks, car OBD diagnostics, smart carts, printers, medical device data collection.  

3.Bluetooth Data Transmission + Audio Products e.g., Bluetooth music lights, Bluetooth broadcasting, electronic keyboards, and other musical instruments.

IV. Parameter Description

---- Sourced from Baidu Baike

Tags: Bluetooth chip, Bluetooth Voice Chip, Bluetooth Audio Chip