AISPEECH YT2216 Smart Voice Interaction IC: High-Integration Bluetooth 5.3 + Offline AI Voice Solution
Keywords: YT2216 | Offline Speech Recognition IC | Bluetooth V5.3 SoC | Low Power AI Voice Chip | Smart Home Appliance Voice Solution | AISPEECH Algorithm SoC
Product Overview: YT2216 is a dedicated "IC+Algorithm" integrated solution for intelligent voice interaction, equipped with 240MHz 32-bit processor & 2MB built-in Flash, Bluetooth 5.3 and high-performance audio Codec, supporting single-mic offline voice recognition to empower massive IoT end devices.
⚡ Core Specifications Summary
✔ Key Product Advantages
1. HW-SW Integrated AI Voice – Pre-integrated optimized AISPEECH voice algorithm, fast wake-up & offline command recognition without internet connection.
2. High Integration Reduces BOM Cost – On-chip 2MB Flash, monolithic integration of Bluetooth, PMIC & audio bias circuit; only limited passive components, crystal, MIC and speaker required for full working solution.
3. Full-Featured Bluetooth 5.3 – Supports A2DP/AVRCP/HFP/SPP/HID profiles, +6dBm max transmit power & -90dBm receiving sensitivity for stable wireless connectivity.
4. Abundant Peripheral Interfaces for Flexible Expansion – USB1.1, SDIO, 3×UART, I2C, PWM, Capacitive Touch Key & multi-channel ADC, widely customizable for home appliances & consumer electronics.
5. Ultra-Low Power with Integrated Charger – Direct Li-ion battery powered, embedded linear charger, shutdown mode standby current down to 3µA, ideal for battery-operated portable products.
YT2216 Internal Functional Block Diagram
240MHz
2xDAC / 1xADC
(Built-in LDO & Charge Management)
*Integrated MIC bias supply, capacitor-free DAC output option, differential/single-ended output, directly drives 16Ω speaker with max 20mW output power.
Detailed Electrical & Performance Specifications
| Spec Category | Parameter Rating | Test Condition / Remark |
|---|---|---|
| Operating Supply Voltage | VBAT 3.0V ~ 5.5V | LDO_IN Charger Input: 4.5~6.5V |
| DAC Performance | SNR 95dB, THD+N -75dB | 1KHz/0dB, 10KΩ Load |
| ADC Performance | SNR 90dB, Dynamic Range 80dB | Fs=44.1kHz Sampling Rate |
| Bluetooth RF Output Power | Max +6dBm | Class1/Class2/Class3 Supported |
| GPIO Sink/Source Current | Max 24mA (PA Bank) | PB5 Pin 5V Tolerant |
| Programmable Charging Current | 20mA~320mA Adjustable | Fast Charge Operation Mode |
IC Pin Definition (SOP16 Package)
| Pin No. | Pin Name | I/O Type | Main Function Description |
|---|---|---|---|
| 1 | DACRO | AO | Right Channel DAC Output / PA5 (Multi-Function GPIO/PWM) |
| 2 | LDOIN | P | 5V Charger Input / 5V-Tolerant GPIO(PB5) |
| 3 | VBAT | P | Main Chip Power Input 3.0~5.5V |
| 4 | VDDIO | P | IO Domain Power 2.2~3.6V |
| 5 | VSS | G | Digital Ground |
| 6 | BT_RF | RF | Bluetooth Antenna RF Port |
| 7 | BT_OSCI | I | Crystal Oscillator Input Terminal |
| 8 | BT_OSCO | O | Crystal Oscillator Output Terminal |
| 9 | USBDM/PA9 | I/O | USB D- / General GPIO / SDIO CMD Signal |
| 10 | USBDP/PA10 | I/O | USB D+ / General GPIO / I2C_SDA |
| 11 | MIC_BIAS/ADC0 | AI/O | MIC Bias Voltage Output / Analog Input / CapTouch Channel0 |
| 12 | AUDIO_ADC_IN | AI | Mono Analog Microphone Input |
| 13 | DACL | AO | Left Channel DAC Output (Default Audio Path) |
| 14 | PA1/CLKOUT | I/O | Multi-Function GPIO/PWM/UART Interface |
| 15 | PA0/TOUCH1 | I/O | Capacitive Touch Channel1 / PWM Output |
| 16 | PB1/UART0_TX | I/O | Internal Pull-up, UART Debug & Log TX Pin |
SOP16 Package Outline Dimension
• Body Width: 3.9mm (Typical) • Body Length: 9.9mm
• Pin Pitch: 1.27mm • Max Body Height: 1.75mm
• Package Code: SOP16-150mil
(Refer to official datasheet for complete JEDEC-standard dimension details)
Typical Schematic & Single-Mic Offline Voice Application Solution
YT2216 Single-Mic Offline Voice Reference Design – Complete wake-up & offline command recognition + Bluetooth audio function realized with minimal peripheral BOM components.
Key Circuit Connection Notes:
▪ Power Supply: VBAT connects to 3.7~4.2V Li-ion cell or external 5V DC, LDOIN for 5V charging input, VDDIO outputs regulated 3.3V for peripheral loads.
▪ Crystal: 24MHz fundamental crystal mounted between BT_OSCI & BT_OSCO with 10~12pF load capacitors.
▪ Microphone: Single-ended/differential analog MIC hooked to MIC_BIAS and AUDIO_ADC_IN with on-chip internal bias supply.
▪ Audio Output: DACL/DACRO feeds external audio amp (NS4150) to speaker; capacitor-free output design available for cost saving.
▪ RF Antenna: BT_RF connects with π-type impedance matching network + PCB antenna or ceramic Bluetooth antenna.
▪ Debug & FW Upgrade: UART0 (PB1/PB0) for debug log, on-chip USB port supports in-system firmware upgrade.
| Component | Spec Description | Qty |
|---|---|---|
| YT2216 Voice SoC | SOP16 Package | 1 |
| Crystal Oscillator | 24MHz ±20ppm | 1 |
| Audio Power Amp | NS4150 / CS8121S Mono Class D Amp | 1 |
| Microphone | Electret MIC / MEMS Silicon MIC | 1 |
| Loudspeaker | 4Ω~16Ω Impedance, 2W~5W Rated Power | 1 |
| Passive RC & Inductor | Standard 0402/0603 SMD Footprint | Assorted |
Design Tip: PA5 is predefined as amplifier enable pin inside official SDK, DACL set as default primary audio output while DACRO configurable as high-impedance state. Directly drive 16Ω speaker up to 20mW output for small home appliance products.
Typical End-Product Applications
Supported Product Forms: All above home appliances & control panels can realize offline voice command (Power ON/OFF, Temperature Adjustment, Working Mode Switch) + Bluetooth audio playback based on YT2216 chip solution.
Development Service & Technical Support
✅ Full SDK package & voice model customization tool available; customizable wake-up word and max 200 offline command entries.
✅ Reference Schematic, PCB Layout Guide accessible via GS-Micro Semiconductor application.
✅ External device control via UART/GPIO, PWM dimming & speed regulation, expandable capacitive touch keys.
✅ Mass production programming tool & pre-compiled offline voice library to shorten customer development cycle.
Pin-to-Pin Replacement & Competitive Benchmark (YT2216 Outstanding Merits)
| Comparison Item | YT2216 | CI1102 (ChipIntelli) | Jerry AC695N |
|---|---|---|---|
| Bluetooth Spec Version | V5.3 + BLE/EDR Dual Mode | No On-chip Bluetooth | Bluetooth 5.2 Version |
| Embedded Flash Storage | 2MB On-chip (No External SPI Flash Needed) | Require External SPI Flash IC | External Flash Mandatory |
| Embedded Voice Algorithm | Custom AISPEECH Algorithm (Local Recognition + Built-in Noise Reduction) | Generic Standard Voice Library | Third-party Algorithm Porting Required |
| DAC SNR Rating | 95dB High-Fidelity Audio | ~90dB Typical | ~94dB Typical |
| Integrated Charging Function | Built-in Linear Charger, Direct Li-ion Battery Connection Supported | No Integrated Charging Circuit | No Integrated Charging Circuit |
| Package & Standby Current | SOP16, Shutdown Current 3µA | QFN32, Higher Quiescent Power Consumption | QFN24, ~10µA Standby Current |
GS-Micro Recommended YT2216 Core Summary: Compared with mainstream competitive voice ICs, YT2216 integrates 2MB large-capacity internal Flash, advanced Bluetooth5.3 and full PMIC charging unit on single die, eliminating extra external Flash and standalone charger chips to shrink PCB layout area & cut overall BOM cost. Complete offline voice technical support provided by GS-Micro, making it cost-effective upgrade option for home appliance voice-enabled renovation.
Ordering Details
Frequently Asked Questions(FAQ)
Q1: Does YT2216 support offline multi-turn continuous dialogue?
A: Yes, multi-round conversation configurable via embedded AISPEECH algorithm with average recognition response below 150ms.
Q2: Is external audio amplifier mandatory during hardware design?
A: DAC outputs analog audio signal; external 2~5W class D amp recommended for regular speaker drive; chip can directly drive 16Ω earphone or mini speaker with max 20mW power output.
Q3: How to adjust on-chip charging current?
A: Charging parameter configurable via internal register, adjustable range from 20mA to 320mA to match various Li-ion cell capacities.
Q4: Can YT2216 connect with Alibaba/Tencent Cloud IoT platform directly?
A: YT2216 focuses on offline voice + Bluetooth audio functions; cloud connectivity realized via auxiliary external MCU or Wi-Fi expansion solution, reference design provided upon request from GS-Micro.
Q5: Is YT2216 drop-in compatible with CI1103?
A: Pin assignment differs but functional replacement available with superior Bluetooth & integrated charging features; minor software migration required with full technical migration support from GS-Micro engineering team.
Authorized Partner & Custom Solution Support — GS-Micro Semiconductor (Shenzhen) Co., Ltd.
Founded in 2023 with predecessor LUMENCHIP established back in 2010, GS-Micro Semiconductor is headquartered in Shenzhen China, specializing in mixed-signal IC distribution, application solution design and green intelligent semiconductor product commercialization.
GS-Micro integrates global semiconductor channel resources to combine authorized component distribution, market forecast analysis and turnkey hardware solution service into one-stop supply chain platform. We operate self-owned IC brands alongside worldwide franchised product lines to deliver competitive customized semiconductor solutions for global OEM/ODM manufacturers, committed to maximizing customer profitability with optimized IC design proposal and stable component sourcing. Our product portfolio covers MCU, PMIC, AI Voice IC, Signal Chain IC & Power discrete devices.
GS-Micro has built long-term authorized cooperation with worldwide top-tier semiconductor manufacturers including DONGWOON(Korea), CR MICRO(PowTech), CRHJ, APM, COOLSEMI, ANHI, Reasunos, OCX, MassChip, XLSEMI, NSIWAY, EGmicro, Ruimeng Tech, ChipWays, AISPEECH, Aerosemi etc., providing full-stack voice processing solutions covering wake-up detection, offline speech recognition, voice synthesis and natural language interaction.
Guided by corporate value "Customer Centric & Value-Oriented", GS-Micro keeps focusing on IC technical landing and application optimization to promote sustainable development of green smart semiconductor industry with outstanding distribution & solution service globally.
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