Azoteq IQS7320A ProxFusion® IC

Azoteq IQS7320A ProxFusion^® IC is a multi-channel inductive sensing device aimed at applications that require multi-level trigger points and fast report rates. The trigger-level UI allows for adjustable trigger point sensitivity, resulting in a better user experience with class sensitivity and power consumption. This IC features automatic tuning and long-term environmental tracking. The IQS7320A IC operates from 2.2V to 3.5V input supply voltage range and -40°C to 85°C temperature range. Typical applications include mechanical keyboards, waterproof buttons (inductive), trackpad force touch, remote controls, and gaming controllers.

Features

Highly flexible ProxFusion^® device
Up to 4 inductive sensors
Adjustable trigger point detection for each sensor
Greater than 1kHz report rate
Synchronous matrix column key scanning
RF immunity
Sensor flexibility:
- Automatic sensor tuning for optimum sensitivity
- Internal voltage regulator
- On-chip noise filtering
- Trigger point detection hysteresis

Configurable power modes for optimal response rate vs power consumption
I²C communication interface with IRQ/RDY (up to fast plus 1MHz)
2.2V to 3.5V wide input supply voltage range
-40°C to 85°C operating temperature range
QFN20 package (3mm x 3mm x 0.5 mm) – 0.4mm pitch

Applications

Mechanical keyboards
Waterproof buttons (inductive)
Trackpad force touch

Remote controls
Gaming controllers

Azoteq IQS7320A ProxFusion® IC

Features

Applications

Block Diagram

Schematic Representation

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