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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5. Bluetooth RF Subsystem
5.1 Bluetooth description
The MT2822A series Bluetooth (BT) RF subsystem (as shown in Figure 5.1-1) consists of a highly integrated
transceiver with tunable on-chip RF band pass filter (BPF) and BT TRX co-matching network.MT2822A series adopts
a low intermediate frequency (LIF) receiver architecture. The receiver, including the on-chip RF BPF and TRX co-
matching network, consists of a LNA and single balanced passive mixer, a complex BPF and a pair of 10-bit SAR
ADCs. The MT2822A series BT receiver has best-in-class out-of-band blocking performance without the need of any
external RF BPF.
The direct conversion transmitter consists of a pair of 9-bit current DACs and passive LPFs, an active IQ
modulator (IQM) and a Class AB push-pull PA. This PA is capable of transmitting +5dBm power for enhanced data
rate (EDR) and +8dBm for basic data rate (BDR). The Class AB push-pull PA, together with on-chip RF BPF and TRX
co-matching network, minimizes TX harmonic distortion products significantly, eliminating the need for an external RF
BPF.
The Δ-Σ fractional-N RF synthesizer is phase locked to 26MHz reference clock to generate the RF LO frequency.
The BBPLL generates sampling clock for ADC and DAC as well as digital clock to BT modem.MT2822A series
implements various automatic calibration schemes to minimize changes in RF performance from chip-to-chip and
temperature variations. No additional RF factory calibration is necessary.
5.2 Functional specifications
Typical RF performances are specified for mid. channel, TA = +25℃, and under recommended operating
conditions,unless stated otherwise.
Confidential-Release to Stsapp from Sunitec on 20211110