ZSIR11XX Series: Smart Pyroelectric (PIR) Sensor Solutions

Product Overview

The ZSIR11XX series is a platform-based product family built on a unified digital signal processing core. The series ranges from a core signal processor (ZSIR1102) to a smart controller that requires no external MCU (ZSIR1100), as well as integrated sensors that package these components with a pyroelectric sensing element (ZSIR1112, ZSIR1110). Through this tiered product matrix, we provide customers with highly flexible, cost-effective, and deeply integrated end-to-end solutions designed to reduce costs and accelerate time-to-market.

ZSIR11xx Product Family
ZSIR11xx Chip

Core Value

Advanced Digital Signal Processing

Built-in high-precision ADC and digital filters for high-sensitivity, high-interference-resistance, and stable detection.

MCU-less Smart Control

Features complete built-in application logic to independently handle user interaction, dimming, charging, and more, eliminating the need for an external MCU.

Integrated Power Management

Integrates constant-current lithium battery charging, supporting both USB and solar modes to simplify power supply design.

Flexible System Integration

Supports master-slave mode for dual-tech (IR/microwave) functionality. Available in various forms, from bare die to standard packages, to meet diverse integration needs.

Key Parameters

Feature ZSIR1102 ZSIR1112 ZSIR1100 ZSIR1110
Product Definition Processor Digital Sensor Controller Sensing Controller
Integrated Element No Yes No Yes
Standalone (MCU-less) No No Yes Yes
Charging Management No No Yes Yes

Technical Overview

  • Low-Power Design: Typical operating current of just 4.3µA extends the life of battery-powered devices.
  • Interference Resistance: Select models feature enhanced EMS design to suppress RF interference, improving stability in complex electromagnetic environments.
  • Wide Voltage Range: Supports a wide input voltage of 2.4V to 5.5V, enhancing design flexibility and compatibility.
  • Reliability: Operates stably in harsh environments from -40°C to 85°C and features high ESD protection up to 4000V (HBM).
  • Flexibility: Provides an I²C interface, allowing all key parameters to be configured via software to adapt to different scenarios.

Application Areas

Smart Lighting Fixture

Standalone Smart Lighting

MCU-less design enables full functionality, including dimming, timing, and user interaction, without a host controller, reducing BOM cost and development time.

Battery Powered IoT Device

Battery-Powered & IoT Terminals

The 4.3µA low power consumption and integrated battery/solar charging management make it ideal for products with high battery life requirements, such as wireless alarms and solar garden lights.

High Reliability Security Sensor

High-Reliability Security & Sensing

Supports master-slave mode to create dual-tech systems with microwave or other sensors, significantly reducing false alarms for professional security applications.

Smart Home Appliance Integration

Embedded Integration in Smart Appliances

Provides a cost-effective and reliable digital PIR signal processing solution for smart appliances that already have a host MCU, such as air conditioners, air purifiers, and TVs.

About Zettasensing

Beijing Zettasensing Technology Co., Ltd., driven by the core philosophy of 'The Chip is the Sensor,' focuses on the innovative R&D of miniaturized, low-power, and intelligent sensors. By highly integrating MEMS and ASIC chips and incorporating edge intelligence, we deliver clean digital sensor data directly, aiming to drive continuous industry innovation. Compared to traditional analog sensors, Zettasensing's solutions offer significant advantages in size, power consumption, performance, and intelligence. Our product lines focus on four key areas: healthcare, human-computer interaction, smart security, and consumer electronics, and have been widely adopted in cutting-edge markets such as wearable medical devices, smart homes, new energy vehicles, and smart manufacturing. With years of deep expertise, Zettasensing possesses full-stack development capabilities for high-end sensors, empowering AI to efficiently connect with the physical world.

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