AT42QT1010-MAHR datasheet, PDF

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AT42QT1010-MAHR: CategoryAnalog mixed-signal IC The signal circuit; File Size264KB，30 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com

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AT42QT1010-MAHR Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Maker	Microchip
package instruction	UDFN-8
Reach Compliance Code	compliant
Analog Integrated Circuits - Other Types	ANALOG CIRCUIT
JESD-30 code	S-PDSO-N8
length	2 mm
Number of functions	1
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	HVSON
Package shape	SQUARE
Package form	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Maximum seat height	0.65 mm
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	1.8 V
Nominal supply voltage (Vsup)	3 V
surface mount	YES
Temperature level	INDUSTRIAL
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	DUAL
width	2 mm

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AT42QT1010

AT42QT1010 Data Sheet

Introduction

The AT42QT1010 is a digital burst mode charge-transfer sensor that is capable of detecting near

proximity or touch, making it ideal for implementing touch controls.

The QT1010 is designed specifically for human interfaces like control panels, appliances, toys, lighting

controls, or anywhere a mechanical switch or button may be found. It includes all hardware and signal

processing functions necessary to provide stable sensing under a wide variety of changing conditions.

Only a single low-cost capacitor is required for operation.

Features

•

Number of Keys:

– One – configurable as either a single key or a proximity sensor

Technology:

– Patented spread-spectrum charge-transfer (direct mode)

Key outline sizes:

– 6 mm × 6 mm or larger (panel thickness dependent); widely different sizes and shapes

possible

Electrode design:

– Solid or ring electrode shapes

PCB Layers required:

– One

Electrode materials:

– Etched copper, silver, carbon, Indium Tin Oxide (ITO)

Electrode substrates:

– PCB, FPCB, plastic films, glass

Panel materials:

– Plastic, glass, composites, painted surfaces (low particle density metallic paints possible)

Panel thickness:

– Up to 12 mm glass, 6 mm plastic (electrode size and Cs dependent)

Key sensitivity:

– Settable via capacitor (Cs)

Interface:

– Digital output, active high

Moisture tolerance:

– Increased moisture tolerance based on hardware design and firmware tuning

Operating Voltage:

•

2017 Microchip Technology Inc.

Datasheet

DS40001946A-page 1

Table of Contents

Introduction......................................................................................................................1

Features.......................................................................................................................... 1

1. Pinout and Schematic................................................................................................5

1.1.

1.2.

1.3.

Pinout Configurations................................................................................................................... 5

Pin Descriptions........................................................................................................................... 5

Schematics...................................................................................................................................6

2. Overview of the AT42QT1010................................................................................... 8

2.1.

2.2.

2.3.

2.4.

Introduction...................................................................................................................................8

Basic Operation............................................................................................................................8

Electrode Drive.............................................................................................................................8

Sensitivity..................................................................................................................................... 8

3. Operation Specifics................................................................................................. 10

3.1.

3.2.

3.3.

3.4.

3.5.

3.6.

3.7.

3.8.

3.9.

Run Modes................................................................................................................................. 10

Threshold....................................................................................................................................11

Max On-duration.........................................................................................................................12

Detect Integrator.........................................................................................................................12

Forced Sensor Recalibration......................................................................................................12

Drift Compensation.....................................................................................................................12

Response Time.......................................................................................................................... 13

Spread Spectrum....................................................................................................................... 13

Output Features......................................................................................................................... 13

4. Circuit Guidelines.................................................................................................... 15

4.1.

4.2.

4.3.

4.4.

4.5.

More Information........................................................................................................................ 15

Sample Capacitor.......................................................................................................................15

UDFN/USON Package Restrictions........................................................................................... 15

Power Supply and PCB Layout.................................................................................................. 15

Power On................................................................................................................................... 16

5. Specifications.......................................................................................................... 17

5.1.

5.2.

5.3.

5.4.

5.5.

5.6.

5.7.

5.8.

5.9.

Absolute Maximum Specifications..............................................................................................17

Recommended Operating Conditions........................................................................................ 17

AC Specifications....................................................................................................................... 17

Signal Processing.......................................................................................................................19

DC Specifications....................................................................................................................... 20

Mechanical Dimensions............................................................................................................. 21

Part Marking............................................................................................................................... 23

Part Number............................................................................................................................... 23

Moisture Sensitivity Level (MSL)................................................................................................ 24

6. Associated Documents............................................................................................25

2017 Microchip Technology Inc.

Datasheet

DS40001946A-page 3

AT42QT1010-MAHR Related Products

	AT42QT1010-MAHR	AT42QT1010-MAH	ATEVK1010A	AT42QT1010-TSHR
Description		Capacitive Touch Sensors One-Channel Touch Sensor IC	BOARD EVAL FOR AT42QT1010A	ICTOUCHSENSOR1KEYSOT23-6
Maker	Microchip	Microchip	-	Microchip
package instruction	UDFN-8	HVSON,	-	LSSOP,
Reach Compliance Code	compliant	compliant	-	compliant
Analog Integrated Circuits - Other Types	ANALOG CIRCUIT	ANALOG CIRCUIT	-	ANALOG CIRCUIT
JESD-30 code	S-PDSO-N8	S-PDSO-N8	-	R-PDSO-G6
length	2 mm	2 mm	-	2.9 mm
Number of functions	1	1	-	1
Number of terminals	8	8	-	6
Maximum operating temperature	85 °C	85 °C	-	85 °C
Minimum operating temperature	-40 °C	-40 °C	-	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	-	PLASTIC/EPOXY
encapsulated code	HVSON	HVSON	-	LSSOP
Package shape	SQUARE	SQUARE	-	RECTANGULAR
Package form	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	-	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Maximum seat height	0.65 mm	0.65 mm	-	1.45 mm
Maximum supply voltage (Vsup)	5.5 V	5.5 V	-	5.5 V
Minimum supply voltage (Vsup)	1.8 V	1.8 V	-	1.8 V
Nominal supply voltage (Vsup)	3 V	3 V	-	3 V
surface mount	YES	YES	-	YES
Temperature level	INDUSTRIAL	INDUSTRIAL	-	INDUSTRIAL
Terminal form	NO LEAD	NO LEAD	-	GULL WING
Terminal pitch	0.5 mm	0.5 mm	-	0.95 mm
Terminal location	DUAL	DUAL	-	DUAL
width	2 mm	2 mm	-	1.6 mm

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