原标题：基于Microchip IS2064B的TWS 蓝牙耳机方案

　　TWS无线立体耳机有望成为下一个快速普及的智能消费产品。以AirPods,Bragi为代表的苹果，三星等标志性的产品引领TWS耳机消费趋势;移除3.5mm耳机趋势已成，无线耳机便捷度智能化优势大，成为消费者的重要选择。

　　Microchip 顺应市场需求，推出IS2064B ，它是一ROM 版的立體聲SOC藍牙解決方案，是一款同时支持音频，数据传输，BLE 三模的方案，低成本，高品质，开发周期短，可满足客户迅速产品化要求。

　　场景应用图

　　产品实体图

　　展示板照片

　　方案方块图

　　产品拆解图

　　核心技术优势

　　支持以下Bluetooth profiles,

　　1. A2DP1.3

　　2. AVCRP1.6

　　3. HFP1.6

　　4. HSP1.6

　　5. SPP1.2

　　方案规格

　　1. 内置电池管理功能，最大充电电流350mA。

　　2. 内容电池电压、温度检测。

　　3. 支持ANCS。

　　4. 内置高质量的DAC转换电路：信噪比98dB。

　　5. 小封装尺寸：5X5X0.9 ;3.5X5X0.9。

　　6. 蓝牙版本：Bluetooth V4.2，极高的软件兼容性。

　　7. 极低的功耗： 听音乐平均功耗17mA

　　8. 射频支持Class1、2功率级别，最大15 dBm。

　　9. 高品质音频: 内置32-Bit DSP,16Khz NC&EC

　　10. 支持双向控制，APP 2 Headset; SPK 2 App 。

　　11. 多音频格式解码功能： SBC、AAC 、mSBC。

　　技术文档

　　【IS2064】

　　Features:

　　Codec support for SBC, AAC, and LDAC (IS2064GM-0L3 only)

　　Bluetooth 5 Certified

　　Portable Speakers

　　Multiple Speaker Support

　　Device Overview

　　Summary

　　The IS2064 products are part of our Bluetooth Dual Mode family of stereo audio SoCs. Three variants are offered in a variety of packages, form factors and memory configurations. The IS2064GM is a Flash-based device that can be programmed to support a variety of speaker configurations. The IS2064S/B are ROM-based devices featuring Stereo Mode functionality, which allows audio playback on two devices.

　　All variants support SBC and AAC Codecs. The IS2064GM-0L3 supports LDAC. For more information contact your local Microchip representative or send an email to BTAudio@microchip.com.

　　Additional Features

　　Bluetooth Features

　　Codec support for SBC, AAC, and LDAC (IS2064GM-0L3 only)

　　Bluetooth 5 Certified

　　Support to simultaneously connect to two audio sources via HFP and/or A2DP

　　Generic Access Service

　　Device Information Service

　　Proprietary Services for data communication

　　HFP 1.6

　　HSP 1.2

　　A2DP 1.3

　　SPP 1.2

　　AVRCP 1.6

　　System Features

　　Built-in internal Flash for program memory (IS2064GM)

　　16 MHz main clock input

　　USB firmware upgrade supported

　　Three LED drivers

　　Built-in EEPROM

　　Integrated 3V, 1.8V configurable switching regulator and LDO

　　Crystal oscillator with built-in digital trimming for temperature/process variations

　　Built-in ADC for battery monitor and voltage sense

　　Built-in Lithium-ion battery charger (up to 350mA)

　　RF Features

　　Adaptive Frequency Hopping (AFH) avoids occupied RF channels

　　Fully supports Bluetooth BDR/EDR/BLE specification

　　Combined TX/RX RF terminal simplifies external matching and reduces external antenna switches

　　Maximum +4 dBm output power

　　Built-in T/R switch for Class 2/3 application

　　There requires no external VCO, varactor diode, resonator and loop filter

　　Supports 64 kb/s A-Law or µ-Law PCM format, or CVSD (Continuous Variable Slope Delta Modulation) for SCO channel operation.

　　Audio Features

　　Fully integrated synthesizer

　　Noise suppression

　　Echo suppression

　　SBC and optional AAC decoding

　　Packet loss concealment

　　Supports SCMS-T

　　20 bit DAC and 16 bit ADC codec

　　98dB SNR DAC playback

　　Supports digital audio I2S format and analog audio output

　　A line-in port for external audio input

　　High speed HCI-UART (Universal Asynchronous Receiver Transmitter) interface(up to 921600bps)

　　Applications

　　Headsets

　　Headphones

　　Portable Speakers

　　Multiple Speaker Support

　　Parametrics

　　Name：Value

　　Bluetooth Classic-Data/SPP：Yes

　　Bluetooth Classic-Audio：Yes

　　Bluetooth Low Energy：Yes

　　Audio Channels：Stereo

　　Analog Audio Out：Yes

　　Digital Audio Out：Yes

　　MIC-in：1

　　Line-in：Yes

　　GPIO：15

　　Package Type：68-pin LGA, 68-pin QFN, 61-pin BGA：Package Size

　　8x8 LGA, 8x8 QFN, 5x5 BGA

　　Temperature Range：-20 C to +70 C

　　Operating Voltage Range：3.2 V to 4.2 V