QT113-DG Atmel, QT113-DG Datasheet

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QT113-DG

Manufacturer Part Number
QT113-DG
Description
IC SENSOR TOUCH/PROX 1CHAN 8DIP
Manufacturer
Atmel
Series
QProx™r
Type
Capacitiver
Datasheet

Specifications of QT113-DG

Touch Panel Interface
1, 2-Wire
Number Of Inputs/keys
1 Key
Resolution (bits)
14 b
Data Interface
Serial
Voltage Reference
Internal
Voltage - Supply
2.45 V ~ 5.25 V
Current - Supply
600µA
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
8-DIP
Output Type
Logic
Input Type
Logic
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Interface
-
Other names
427-1095
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

Related parts for QT113-DG

QT113-DG Summary of contents

Page 1

... Copyright 1999-2004 QRG Ltd C HARGE Appliance control Security systems AVAILABLE OPTIONS T SOIC + + QT113-ISG QProx™ QT113 -T T RANSFER OUCH Vdd 1 Out 2 Opt1 3 Opt2 4 Access systems Elevator buttons Pointing devices Consumer devices 8-PIN DIP QT113- ENSOR 8 Vss 7 Sns2 6 Sns1 5 Gain R1.05/0405 ...

Page 2

... The QT switches and charge measurement hardware functions are all internal to the QT113 (Figure 1-2). A 14-bit single-slope switched capacitor ADC includes both the required QT charge and transfer switches in a configuration that provides direct ADC conversion. The ADC is designed to ...

Page 3

... Cx lower to reduce loading and keep gain high. 1.3.5 S ENSITIVITY The QT113 can be set for one of 2 gain levels using option pin 5 (Table 1-1). This sensitivity change is made by altering the internal numerical threshold level required for a detection. Note that sensitivity is also a function of other things: like the ...

Page 4

... 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 specifically designed to provide for high 'survivability' in the face of numerous adverse environmental changes. 2.1 RIFT ...

Page 5

... Out to ground (Figure 2-5). 2.2.4 O The QT113’s `output is active low and can sink up to 5mA of non-inductive current inductive load is used, such as a small relay, the load should be diode clamped to prevent damage. When set to operate in a proximity mode (at high gain) the current should be limited to 1mA to prevent gain 0.01µ ...

Page 6

... If the power supply is shared with another electronic system, care should be taken to assure that the supply is free of digital spikes, sags, and surges which can adversely affect the QT113. The QT113 will track slow changes in Vdd, but it can be affected by rapid voltage steps. if desired, the supply can be regulated using a conventional low current regulator, for example CMOS regulators that have low quiescent currents ...

Page 7

... ESD PROTECTION The QT113 includes internal diode protection on its pins to absorb and protect the device from most induced discharges 20mA. The electrode should always be insulated against direct ESD; a glass or plastic panel is usually enough as a barrier to ESD ...

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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