LDS6200 Family
PureTouch
®
* Low Channel Capacitive Touch Sensor IC Family
FEATURES
o
o
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o
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Up to 8 touch sensor channels
o
2ms update rate per active sensor input**
Built-in Slider/Scroll Support
Configurable hysteresis and debounce
Touch Preference Modes
1.65-5.5v supply voltage
Low touch sensor operating power
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Full power mode (typ): <125uW***
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Optional low power mode
On-chip automatic calibration algorithm
2
I C compatible serial I/F with VDDIO
Power on touch detection
Configurable for proximity sensing
GPIO and interrupt output
3mm x 3mm 16-pin and 20-pin TQFN
packages
o
SOIC packages also available
DESCRIPTION
The LDS6200 Family of capacitive touch controllers
enables streamlining of the human-machine interface
through the implementation of touch-based user
inputs such as touch buttons, sliders, and scroll
wheels.
Employing a finely tuned sigma-delta
capacitance-to-digital converter and proprietary
noise-filtering algorithms, each device is able to
reliably sense small changes in capacitance, allowing
touch-based inputs to replace a side variety of
mechanical input types.
On-chip automatic
calibration accounts for environmental changes such
as temperature, humidity, and dust and is executed
automatically.
The LDS6200 Family consists of four products with
up to 8 capacitive sensor input pins.
o
o
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Part #
LDS6201
LDS6202
Touch Sensors
Up to 2
Up to 4
Up to 6
Up to 8
Package
16ld TQFN
16ld SOIC
20ld TQFN
20ld SOIC
APPLICATIONS
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Mobile handsets, personal media players
Portable navigation devices
Remote controls
Office equipment, multi-function printers
Set top boxes
Home appliances
Brown goods
Industrial controls
LDS6203
LDS6204
The LDS6200 Family supports touch sensor supply
2
voltages from 1.65 to 5.5V. All parts support I C
compatible serial interfaces and offer both a General
Purpose I/O (GPIO) and VDDIO support, enabling
1.65V to 5.5V voltage interface support. Typical
touch sensor operating power for the device is less
than 125uW***. Package offerings include thin form
factor 3mm x 3mm 16-pin TQFN, 3mm x 3mm 20-pin
TQFN, 3.9mm x 9.9mm 16-pin SOIC, 7.5mm x
12.8mm 20-pin SOIC.
* PureTouch is a registred trademark of IDT
** Nominal decimation rate (d=1024), per sensor input
*** 1.8V, excluding VDDIO current, which varies with VDDIO voltage, I/F type, and communication frequency
© 2011 IDT
Characteristics subject to change without notice
1
Doc. No. 6200DS, Rev. 0.5
LDS6200 Family
ABSOLUTE MAXIMUM RATINGS
Item
Touch Sensor Supply Voltage
Serial Interface Operating Voltage
Input voltage range (Digital)
Input voltage range (Analog)
Output voltage range (Digital)
Output voltage range (Analog)
Operating Temperature Range
Storage Temperature Range
Symbol
VDD
VDDIO
VIN
AVIN
VOH
AVOH
T
OPR
T
STG
Rating
-0.3 to +6.0
-0.3 to +6.0
-0.3 to VDDIO +0.3
-0.3 to VDD +0.3
-0.3 to VDDIO +0.3
-0.3 to VDD +0.3
-40 to +85
-55 to +125
Unit
V
V
V
V
V
V
°
C
°
C
ESD PROTECTION LEVEL
Model
Human Body Model
Charge Device Model
Machine Model
Test condition
C = 100pF, R = 1.5k
Charging Resistor = 300M
C = 200pF, R = 0
Rating
8000
1500
400
Unit
V
V
V
RECOMMENDED OPERATING CONDITIONS
Condition
Unit
VDD*
1.65 to 1.95
V
VDDIO
1.65 to 5.5
V
Ambient Temperature Range
-40 to +85
°
C
* For supply voltages >1.95V, apply to VDDIO pin and tie VDD pin to GND through C1
Typical application circuit shown on page 3
Parameter
© 2011 IDT
Characteristics subject to change without notice
4
Doc. No. 6200 FamilyDS, Rev. 0.5
LDS6200 Family
ELECTRICAL OPERATING CHARACTERISTICS
VDD = 1.8V, VDDIO = 1.8V T
AMB
= -40° to +85° unless otherwise specified
C
C
Parameter
Power & Operating Voltage
Operating Voltage(1) : Touch*
Operating Voltage(3) : Touch - I/O
Logic Inputs
High Level Input Voltage
Low Level Input Voltage
Input Leakage Current
Logic Outputs
High Level Output Voltage
Low Level Output Voltage
Capacitance-to-Digital Converter
CDC Update Rate per Active Sensor
CIN Input Leakage
Sensor Capacitance
Tcdc
IILcin
Csensor
(*3)
IOH= -1mA
C0~Cx
25 (*4)
1.95
2.05
2.15
ms
nA
pF
VOH
VOL
IOH= -1mA
IOL= +1mA
(*2)
(*2)
0.8*VDDIO
0.2*VDDIO
V
V
VIH
VIL
IIL
-
-
VIN= VDDIO or VSS
(*1)
(*1)
(*1)
0.7*VDDIO
VSS
-1
0.3*VDDIO
V
V
uA
VDD
VDDIO
Symbol
Conditions
-
-
-
VDD
VDDIO
1.65
1.65
1.8
-
1.95
5.5
V
V
Related Pins
Min
Typ
Max
Unit
* For supply voltages >1.95V, apply to VDDIO pin, set LDOEN to logic high, and tie VDD1 pin to GND through C1
Typical application circuits shown on page 2 and 3
NOTE: (*1): SCLK, SDA, GPIO; (*2): SDA, INTB, GPIO; (*3) DECIMATION RATE = 1024, PER UTILIZED SENSOR; (*4): MAXIMUM
SENSOR CAPACITANCE MAY BE ALLOWED TO EXCEED 25PF DEPENDING UPON SYSTEM CONDITIONS – CONTACT IDT FOR
EXCEPTION CONDITIONS
© 2011 IDT
Characteristics subject to change without notice
5
Doc. No. 6200 FamilyDS, Rev. 0.5
Analog electronics
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