ChipIntelli CI13161 AI Voice Recognition IC: Integrated BNPU, Power Management, and Audio in an SOP16 Package
Adding voice control to an existing product involves more than recognition software. Audio capture, processing, playback, power management, and host communication must work together. Consolidating these functions can simplify the circuit architecture and let development teams focus on the intended user experience.
The ChipIntelli CI13161 is an SOP16 AI voice recognition IC that combines BNPU V3.5 neural-network processing, a CPU operating at up to 210 MHz, 288 KB SRAM, 1 MB Flash, integrated power management, and an audio codec. It provides a common platform for voice input, recognition processing, and host-control integration.
Key Features and Specifications
| Parameter | CI13161 Specification or Function |
|---|---|
| Product type | AI voice recognition IC |
| Package | SOP16 |
| Neural-network processor | BNPU V3.5 |
| CPU frequency | Up to 210 MHz |
| Supported network architectures | DNN, TDNN, RNN, and CNN |
| Memory | 288 KB SRAM and 1 MB Flash |
| Supply range | 3.6–5.5 V, suitable for integration into 5 V systems |
| Power management | Integrated PMU with 3.3 V and 1.1 V LDOs |
| Host communication | UART up to 3 Mbaud; supported GPIOs allow 5 V communication with external pull-ups |
| Audio | Integrated ADC/DAC codec, SNR ≥ 95 dB, and ALC |
| Operating temperature | -40°C to +85°C |
| ESD design | 4 kV ESD enhancement under manufacturer test conditions |
| Development support | SDK, online voice-development platform, and firmware updates |
Integrated Power Management Simplifies the Supply Architecture
The CI13161 operates from 3.6–5.5 V and integrates a PMU with 3.3 V and 1.1 V LDOs. These regulators provide the chip's internal supply requirements, reducing the need for separate regulators in a compatible 5 V design.
Fewer supply components can simplify the BOM and routing while preserving board space for microphones, connectors, and audio circuitry. Decoupling and protection should follow the reference design, with external amplifier and peripheral loads planned separately.
BNPU V3.5 and a CPU Up to 210 MHz for Voice Processing
BNPU V3.5 supports DNN, TDNN, RNN, and CNN architectures. Together with the CPU operating at up to 210 MHz, it provides processing resources for voice recognition and associated signal handling on one device.
288 KB SRAM and 1 MB Flash support firmware, recognition models, working buffers, and audio resources. Developers can allocate memory around the selected command set and interaction flow, then validate recognition behavior and response time in the actual product.
UART Adds Voice to Existing Control Platforms
UART operation at up to 3 Mbaud allows the CI13161 to exchange recognition results, commands, and status information with a host controller. An established product can retain its main MCU while using the CI13161 as a dedicated voice-processing front end.
For a 5 V host interface, use GPIOs that support 5 V communication and configure the required external pull-ups. Correct pin selection and interface configuration can reduce the need for additional level-shifting circuitry while preserving the existing control architecture.
Integrated Audio ADC/DAC and Automatic Level Control
The integrated audio codec combines ADC and DAC functions with an SNR specification of at least 95 dB and automatic level control, ALC. This brings audio conversion and level configuration into the same platform as voice processing.
Microphone selection, acoustic openings, supply noise, and mechanical vibration should be assessed with the recognition system. Speaker playback requires an external power amplifier selected for the required volume and load; the codec provides signal conversion rather than speaker power drive.
Wide-Temperature Operation and ESD-Enhanced Design
The CI13161 supports -40°C to +85°C operation and includes a 4 kV ESD-enhanced design, providing parameters for environmental and reliability evaluation.
Complete-product performance still depends on grounding, interface protection, power quality, and mechanical implementation. Appropriate protection at exposed microphone, power, and communication connections should be considered alongside the device's own capabilities.
Development Resources Support Faster Validation
An SDK, online voice-development platform, and firmware-update support help teams implement command recognition, audio resources, and host communication. These resources provide a starting point for tailoring the voice interface to the product.
Begin with the command set and expected control responses. Implement power, microphone, audio-output, and UART circuits using the reference design, then build and program the firmware. Complete acoustic tuning in the final enclosure and validate noise conditions, communication, temperature, and update behavior before production release.
Applications in Appliances, Lighting, and Interactive Products
The CI13161 can be evaluated for smart appliances, smart lighting, interactive toys, and voice-controlled equipment. Its SOP16 package brings processing, memory, power management, and audio together, allowing voice interaction to be added through a more consolidated circuit design.
For teams seeking to reduce external components and streamline voice integration, the ChipIntelli CI13161 offers a practical platform for coordinating audio input, recognition, and application control.
Contact AENEAS Electronics
Contact AENEAS Electronics Co., Ltd. for ChipIntelli CI13161 product information, sample inquiries, and application selection for intelligent voice-control products.
Product specifications and operating conditions are subject to the latest manufacturer documentation.