IQS231 Datasheet, PDF (1/37 Pages) List of Unclassifed Manufacturers – Single Channel Capacitive Proximity/Touch Controller for SAR applications

ProxSense^® Series
IQS231 Datasheet
Single Channel Capacitive Proximity/Touch Controller for SAR applications
Features
 Pin compatible with
IQS127/128/227/228/211
 Replacement solution for the IQS128 to
meet SAR regulations (failsafe & long-term
activation testing) and improve performance
 Improved IQS128 DYCAL^TM operation with
quick release detection for improved SAR
safety
 Human detection options for start-up
detection and improved user experience
(non-default, FCC approval pending)
 1.75V to 3.6V Input voltage, trimmed to use
proximity detection with 1.8V digital
interface
 External threshold adjustment pin
(minimize need for pre-empted OTP
adjustments)
 Minimal external components (direct input
strap)
 Standalone failsafe mode (backwards
compatible failsafe output, short pulses on
output to indicate operational device)
 Default OTP options focus on safety and
passing SAR lab qualification, OTP
changes offer performance advantages
 Quick release detection – effectively
prevent false triggers
 Quick release sensitivity options
Applications
 SAR Sensor
 Integrated hybrid designs (RF and
capacitive sensing combined)
 Movement sensing applications (user
interaction detection, anti-theft)
RoHS2
Compliant
6 pin TSOT23-6
Representations only,
not actual markings
 Projected capacitive
sensing option (self-
capacitance by default)
 I2C interface option
(improved compatibility)
 Extended controls in I²C mode (setup in
I²C, runtime with standalone output)
 Hand-held power on detection (safety
back-off feature using user interaction)
 Optional input for synchronized
implementations (input to instruct IC when
to sense)
 Synchronization output – failsafe pulses
may be used by the master to synchronize
on. Sensing is done after each pulse
 Synchronization input – Sensing is only
done while Sync input is low
 Low power sensing: 30Hz (default), 100Hz,
8Hz, 4Hz (sub 10uA mode)
 Constant sampling rates during all
power modes with rapidly debounced
output changes
 Hold detection for screen activation
 On-ear detection
Copyright © Azoteq 2015
All Rights Reserved
T_A
-40°C to 85°C
TSOT23-6
IQS231
IQS231 Datasheet v1.3
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November 2015