Product Specs
Table Of Contents
- BMS002 BT5.2 LE Audio Module
- RF/Analog
- • Frequency spectrum: 2.402 GHz to 2.480 GHz
- • Receive sensitivity: -95 dBm (2 Mbps EDR)
- • Output Power：8±2dBm (BDR) , 6±2dBm (EDR)
- 4±2dBm (BLE1M/2M)
- Audio Codec
- • SBC,AAC, LDAC
- • 24-bit digital-to-analog converter (DAC) with 10
- • 24-bit analog-to-digital converter (ADC) with 95
- • Supports up to 24-bit, 192 kHz I2S digital audio
- 1.DEVICE OVERVIEW
- 3.Power-on/off sequence
- 4. Battery charge specification revision 1.2 (BC1.2)
- 6.Module Description
- 8. Electrical Characteristics
- 9.Recommended Reflow Temperature Profile:
- 10.QR code label information:
- 11.Certification
- 12.Standard Packing Information
- 13.Document History
Product Specification
Spec-BMS002-V1.7 Page
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2.3 Audio downlink (Analog part)
Low-power MT2822A audio downlink includes stereo DACs and audio Class-G/D amplifiers for audio playback is
shown in Figure 2.3-1. The amplifiers is implemented with class-D and class-G mode The digital Class-G controller
preview the maximum signal level of input digital LCH and RCH signals, and then adjust the power level up or down in
advance before the signal is played. The fully differential headphone amplifiers can deliver up to 38mW into 16Ohm
load. The class-G gain range of amplifier is -22dB to +8dB, 1dB/step,The class-D gain range of amplifier is -6dB to
+6dB, 3dB/step. The 1.5V and 2.4V Capless LDOs are embedded in the audio downlink to enhance the power supply
rejection ratio (PSRR).
38mW Stereo HP driver diff. output into 16Ohm
Low-power music playback with Class-G Operation
Ultra Low-power music playback with Class-D Operation
Click-and-pop noise suppression of Class-G amplifiers <-80dBVpp
Click-and-pop noise suppression of Class-D amplifiers <-70dBVpp
Low output DC offset < 300uV
The proposed downlink path supports the following features:
The data precisions in the downlink path are 24-bit data width.
The supported input sample rates for downlink:
8K/11.025K/12K/16K/22.05K/24K/32K/44.1K/48K/96K/192K
Confidential-Release to Stsapp from Sunitec on 20211110