QT113A-ISG Atmel, QT113A-ISG Datasheet

IC SENSOR TOUCH/PROX 1CHAN 8SOIC

QT113A-ISG

Manufacturer Part Number
QT113A-ISG
Description
IC SENSOR TOUCH/PROX 1CHAN 8SOIC
Manufacturer
Atmel
Series
QProx™r
Type
Capacitiver
Datasheets
1.QT113-DG.pdf (12 pages)
2.QT113A-ISG.pdf (1 pages)

Specifications of QT113A-ISG

Touch Panel Interface
1, 2-Wire
Number Of Inputs/keys
1 Key
Resolution (bits)
9, 14 b
Data Interface
Serial
Voltage Reference
Internal
Voltage - Supply
2 V ~ 5.25 V
Current - Supply
600µA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Output Type
Logic
Input Type
Logic
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Interface
-
Other names
427-1138-2

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
H&T Electronics H&T Electronics
Part Number:
QT113A-ISG
Quantity:
3 000
lQ
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, and 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.
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 requires only a common inexpensive capacitor
in order to function.
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.
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 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.
Copyright 1999-2004 QRG Ltd
Light switches
Prox sensors
Projects a proximity field through air or any insulator
Less expensive than many mechanical switches
Sensitivity easily adjusted
Consensus filter for noise immunity
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 timeouts (strap options)
HeartBeat™ health indicator on output
Only one external part required - a 1¢ capacitor
Lead-Free package
-40
0
0
C to +70
0
C to +85
Appliance control
Security systems
T
A
0
C
0
C
AVAILABLE OPTIONS
QT113-ISG
C
SOIC
-
HARGE
Access systems
Pointing devices
-T
RANSFER
Opt1
Opt2
Vdd
Out
QT113-DG
8-PIN DIP
QProx™ QT113
-
1
2
3
4
T
Elevator buttons
Consumer devices
OUCH
8
7
6
5
S
R1.05/0405
ENSOR
Vss
Sns2
Sns1
Gain

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QT113A-ISG Summary of contents

Page 1

Projects a proximity field through air or any insulator Less expensive than many mechanical switches Sensitivity easily adjusted Consensus filter for noise immunity 100% autocal for life - no adjustments required 2.5 to 5V, 600µA single supply operation Toggle ...

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

Sensitivity may even remain the same, as the sensor will be operating in a lower region of the gain curves. 1.3.2 K ’ IRCHOFF S URRENT AW Like all capacitance sensors, the QT113 relies on Kirchoff’s ...

Page 4

Figure 1-4 Shielding Against Fringe Fields Sense Sense wire U ns hielded Electrode 2 - QT113 SPECIFICS 2.1 SIGNAL PROCESSING The QT113 processes all signals using 16 bit math, using a number of algorithms pioneered by Quantum. The algorithms are ...

Page 5

ORCED ENSOR ECALIBRATION The QT113 has no recalibration pin; a forced recalibration is accomplished only when the device is powered up. However, supply drain is low simple matter to treat the entire ...

Page 6

Figure 2-3 Getting HearBeat pulses with a pull-down resistor + eartBeat™ lses PT1 PT2 ...

Page 7

SNS trace will cause an increase in Cx load and desensitize the device. For proper operation a 100nF (0.1uF) ceramic bypass capacitor must be used directly between Vdd and ...

Page 8

ABSOLUTE MAXIMUM SPECIFICATIONS Operating temp ...

Page 9

DC SPECIFICATIONS Vdd = 3.0V 10nF 5pF, T Parameter Description DD DD DDS Note 2: Figure 4-1 - Typical Threshold Sensitivity vs. Cx, High Gain, at Selected Values ...

Page 10

MECHANICAL 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 SYMBOL Min M 4.800 ...

Page 11

ORDERING INFORMATION PART QT113-DG QT113-ISG lQ TEMP RANGE PACKAGE 0 - 70C PDIP Lead-Free -40 - 85C SOIC-8 Lead-Free 11 MARKING QT113-G QT1 + FG or QT113-IG R1.05/0405 ...

Page 12

Tel: +44 (0)23 8056 5600 Fax: +44 (0)23 80565600 Copyright © 2001-2004 QRG Ltd. All rights reserved Corporate Headquarters 1 Mitchell Point Ensign Way, Hamble SO31 4RF Great Britain www.qprox.com North America 651 Holiday Drive Bldg 300 ...

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