IQS128EV04 S Azoteq, IQS128EV04 S Datasheet - Page 12

• Manufacturer Part Number: IQS128EV04 S
• Description: Touch Sensor Development Tools Long range IQS128 proximity kit
• Manufacturer: Azoteq

Specifications of IQS128EV04 S

• Tool Is For Evaluation Of: IQS128
• Interface Type: LED
• Operating Voltage: 2.95 V to 5.5 V

5
Copyright © Azoteq (Pty) Ltd 2011
All Rights Reserved
DYCAL™
LTA
OUT
&
IQS128: REL_T
IQS128LP: REL_T
P
T
CS
THR
THR
1
0
1. If touchpad is approached in Non-TM:
• CS goes below LTA,
• if CS goes below P
• if CS goes below T
• Device will enter TM (Touch Mode) & OUT
will halt (not allowed to track CS),
& LTA will recalibrate
will stay HIGH
THR
THR
= 75%
= 75% or 87.5%
Non-TM
TH
TH
, OUT will stay HIGH
, OUT = HIGH & LTA
Recallibrate LTA
IQ Switch
Figure 5.1 DYCAL Operation
®
ProxSense
IQS128 & IQS128LP Datasheet v2.2
2. If touchpad is released in TM :
• LTA will track CS as long as CS is below P
• CS goes above LTA
• if CS goes above P
• if CS goes above REL_T
• LTA is allowed to track CS
LOW & LTA will recalibrate
®
Series
TM
THR
, LTA will halt,
THR
, OUT will go
Non-TM: Non-Touch Mode
TM: Touch Mode
CS
LTA
P
T
THR
THR
THR
– Long Term Average of CS
- derived from LTA
- derived from LTA
Non-TM
Page 12 of 33
April 2013