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PDF ( 数据手册 , 数据表 ) QT113H-S

零件编号 QT113H-S
描述 CHARGE-TRANSFER TOUCH SENSOR
制造商 ETC
LOGO ETC LOGO 


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QT113H-S 数据手册, 描述, 功能
QProxQT113 / QT113H
CHARGE-TRANSFER TOUCH SENSOR
! Projects a proximity field through air
! Less expensive than many mechanical switches
! Sensitivity easily adjusted via capacitor value
! Turns small objects into intrinsic touch sensors
! 100% autocal for life - no adjustments required
! 2.5 to 5V, 600µA single supply operation
! Toggle mode for on/off control (strap option)
! 10s, 60s, infinite auto-recal timeout (strap options)
! Gain settings in 2 discrete levels
! HeartBeat™ health indicator on output
! Active-low (QT113) or active-high outputs (QT113H)
! Only one external part required - a 1¢ capacitor
Vdd
O ut
O pt1
O pt2
1
2
3
4
8 Vss
7 Sn s2
6 Sn s1
5 Gain
APPLICATIONS -
! Light switches
! Prox sensors
! Appliance control
! Security systems
! Access systems
! Pointing devices
! Elevator buttons
! Toys & games
The QT113 charge-transfer (“QT’”) touch sensor is a self-contained digital IC capable of detecting near-proximity or touch. It will
project a proximity sense field through air, via almost any dielectric, like glass, plastic, stone, ceramic, and most kinds of wood. It can
also turn small metal-bearing objects into intrinsic sensors, making them responsive to proximity or touch. This capability coupled with
its ability to self calibrate continuously can lead to entirely new product concepts.
It is designed specifically for human interfaces, like control panels, appliances, toys, lighting controls, or anywhere a mechanical
switch or button may be found; it may also be used for some material sensing and control applications provided that the presence
duration of objects does not exceed the recalibration timeout interval.
The QT113 requires only a common inexpensive capacitor in order to function.
Power consumption is only 600µA in most applications. In most cases the power supply need only be minimally regulated, for example
by Zener diodes or an inexpensive 3-terminal regulator.
The QT113’s RISC core employs signal processing techniques pioneered by Quantum; these are specifically designed to make the
device survive real-world challenges, such as ‘stuck sensor’ conditions and signal drift. Even sensitivity is digitally determined and
remains constant in the face of large variations in sample capacitor CS and electrode CX. No external switches, opamps, or other
analog components aside from CS are usually required.
The option-selectable toggle mode permits on/off touch control, for example for light switch replacement. The Quantum-pioneered
HeartBeat™ signal is also included, allowing a host microcontroller to monitor the health of the QT113 continuously if desired. By
using the charge transfer principle, the IC delivers a level of performance clearly superior to older technologies in a highly
cost-effective package.
TA
00C to +700C
00C to +700C
-400C to +850C
-400C to +850C
Quantum Research Group Ltd
AVAILABLE OPTIONS
SOIC
QT113-S
QT113H-S
QT113-IS
QT113H-IS
8-PIN DIP
QT113-D
QT113H-D
-
-
Copyright Quantum Research Group Ltd
R1.10/0104







QT113H-S pdf, 数据表
4.1 ABSOLUTE MAXIMUM SPECIFICATIONS
Operating temp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . as designated by suffix
Storage temp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55OC to +125OC
VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 to +6.5V
Max continuous pin current, any control or drive pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20mA
Short circuit duration to ground, any pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . infinite
Short circuit duration to VDD, any pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . infinite
Voltage forced onto any pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to (Vdd + 0.6) Volts
4.2 RECOMMENDED OPERATING CONDITIONS
VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.5 to 5.5V
Short-term supply ripple+noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5mV
Long-term supply stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100mV
Cs value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10nF to 500nF
Cx value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 100pF
4.3 AC SPECIFICATIONS Vdd = 3.0, Ta = recommended operating range, Cs=100nF unless noted
Parameter
Description
Min Typ Max Units
Notes
TRC Recalibration time
TPC Charge duration
TPT Transfer duration
TBS Burst spacing interval
TBL Burst length
TR Response time
THB Heartbeat pulse width
550 ms
2 µs
2 µs
2.1 80 ms Cs = 10nF to 500nF; Cx = 0
0.5 75 ms Cs = 10nF to 500nF; Cx = 0
30 ms Cx = 10pF; See Figure 4-3
300 µs
4.4 SIGNAL PROCESSING
Description
Threshold differential
Hysteresis
Consensus filter length
Positive drift compensation rate
Negative drift compensation rate
Post-detection recalibration timer duration
Note 1: Percentage of signal threshold
Min Typ Max
6 or 12
17
3
1,000
100
10, 60, infinite
Units
counts
%
samples
ms/level
ms/level
secs
Notes
Option pin selected
Note 1
Option pin selected
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