604-00038 Parallax Inc, 604-00038 Datasheet

IC SENSOR TOUCH/PROXMTY 1CH 8DIP

604-00038

Manufacturer Part Number
604-00038
Description
IC SENSOR TOUCH/PROXMTY 1CH 8DIP
Manufacturer
Parallax Inc
Series
QProx™r
Type
Capacitiver
Datasheet

Specifications of 604-00038

Touch Panel Interface
1, 2-Wire
Number Of Inputs/keys
1 Key
Resolution (bits)
14 b
Data Interface
Serial
Voltage Reference
Internal
Voltage - Supply
2.5 V ~ 5.5 V
Current - Supply
1.5mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Output Type
Logic
Input Type
Logic
Product
Microcontroller Accessories
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Interface
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
APPLICATIONS -
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 600 A 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 C
analog components aside from C
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.
Quantum Research Group Ltd
! ! ! ! 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, 600 A 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
!
!
Light switches
Prox sensors
S
-40
-40
are usually required.
0
0
0
0
!
!
C to +70
C to +70
0
0
C to +85
C to +85
Appliance control
Security systems
T
A
0
0
C
C
0
0
C
C
AVAILABLE OPTIONS
QT113H-IS
QT113H-S
QT113-IS
QT113-S
SOIC
!
!
C
S
Access systems
Pointing devices
HARGE
and electrode C
QProx™ ™ ™ ™ QT113 / QT113H
-T
O pt1
O pt2
QT113H-D
V d d
8-PIN DIP
O ut
QT113-D
RANSFER
X
. No external switches, opamps, or other
Copyright Quantum Research Group Ltd
-
-
1
2
3
4
!
!
T
Elevator buttons
Toys & games
OUCH
8
7
6
5
S
R1.10/0104
ENSOR
Vss
Sn s2
Sn s1
Gain

Related parts for 604-00038

604-00038 Summary of contents

Page 1

Projects a proximity field through air ! ! ! ! Less expensive than many mechanical switches ! ! ! ! Sensitivity easily adjusted via capacitor value ! ! ! ! Turns small objects into intrinsic touch ...

Page 2

OVERVIEW The QT113 is a digital burst mode charge-transfer (QT) sensor designed specifically for touch controls; it includes all hardware and signal processing functions necessary to provide stable sensing under a wide variety of changing conditions. Only a ...

Page 3

Cx than a solid plane. Sensitivity may even remain the same, as the sensor will be operating in a lower region of the gain curves. 1.3.2 K ’ C ...

Page 4

Shielding Against Fringe Fields Figure 1-5 Sen se Sense wire U nshielded Electrode 4-1 to 4-3). The value of Cs also has a dramatic effect on sensitivity, and this can be increased in value ( limit). Also, increasing ...

Page 5

To prevent this, the sensor includes a timer which monitors detections detection exceeds the timer setting, the timer causes the sensor to perform a full recalibration (when not set to infinite). This is known as the Max ...

Page 6

Figure 2-3 Getting HearBeat pulses with a pull-down resistor + eartBeat™ P ulses GAIN ...

Page 7

Figure 3-1 ESD Suppression Circuit + OUT PT1 G AIN PT2 digital spikes, sags, ...

Page 8

ABSOLUTE MAXIMUM SPECIFICATIONS Operating temp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 9

DC SPECIFICATIONS Vdd = 3.0V 10nF 5pF, T Parameter Description V Supply voltage DD I Supply current DD V Supply turn-on slope DDS V Low input logic level IL V High input logic level HL ...

Page 10

ORDERING INFORMATION PART QT113-D QT113-S QT113-IS QT113H-D QT113H-S QT113H-IS Chart 4-3 - Typical Response Time vs. Cx; Vdd = 3.0 100.00 10.00 1. Load TEMP RANGE PACKAGE 0 - 70C 0 - 70C -40 ...

Page 11

Package type: 8-pin Dual-In-Line Millimeters SYMBOL Min a 6.096 A 7.62 M 9.017 m 7.62 Q 0.889 P 0.254 L 0.355 L1 1.397 F 2.489 R 3.048 r 0.381 S 3.048 7.62 x 8.128 Y 0.203 Millimeters ...

Page 12

Quantum Research Group Ltd Enterprise House, Southampton, Hants SO14 3XB Tel: +44 (0)23 8045 3934 Fax: +44 (0)23 8045 3939 This device expressly not for use in any medical or human safety related application without the express written consent of ...

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