LDS6025PYGI IDT, Integrated Device Technology Inc, LDS6025PYGI Datasheet
LDS6025PYGI
Manufacturer Part Number
LDS6025PYGI
Description
IC SENSOR TCH PURETOUCH 28SSOP
Manufacturer
IDT, Integrated Device Technology Inc
Series
PureTouch™r
Type
Capacitive, Keypad LED Driverr
Datasheet
1.LDS6025NQGI.pdf
(2 pages)
Specifications of LDS6025PYGI
Number Of Inputs/keys
10 Slider
Data Interface
I²C, Serial, SPI™
Voltage - Supply
1.65 V ~ 1.95 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-SSOP
Interface
I²C, SPI
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Supply
-
Output Type
-
Input Type
-
Other names
800-1889
LDS6025PYGI
LDS6025PYGI
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LDS6025PYGI
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IDT
LDS6025
PureTouch
Integrated Keypad LED Drivers
The LDS6025 PureTouch™ controller empowers system designers to create streamlined, attractive and
reliable product designs with capacitive touch controls. Integrated LED drivers allow visual feedback to
be implemented when a touch occurs, without the need for host intervention.
®
LDS6025 Features
Versatile, accurate capacitance-
to-digital converter (CDC)
• 500 kHz sigma-delta CDC
• 10 capacitance sensor input channels
• 2 ms update rate per active sensor
Integrated keypad LED drivers
• C5-C9 sensor inputs configurable
• 7.75 mA maximum driving current
• Flexible dimming control
• Processor-free synchronization
Integrated, automatic
calibration algorithms
• Environmental compensation
• On-chip RAM to store calibration data
Integrated touch preference modes
• Strongest single touch
• Strongest two touches
• Unrestricted (all) touches
Ultra-low touch sensor
power consumption*
• Operating mode (typical):
• Shutdown mode (typical):
* Excludes LED driver current and I/F and voltage
LDS6025 PurETOuCH™ CaPaCITanCE TOuCH IC
dependent V
as keypad LED drivers
(up to 39 mA available by connecting
multiple outputs to a single LED)
with touch events
<150 uW (VDD1=1.8V)
<1 uW (VDD1=1.8V)
DDIO
current
™
Capacitance Touch IC with
®
®
semiconductor solutions
Description
The LDS6025 is a programmable capacitance-to-digital converter (CDC) designed for use with capacitive
sensor arrays implementing touch-based input controls including sliders, scroll wheels, and buttons.
Featuring 10 sensor inputs, 5 of which are dual-purpose I/Os configurable as either capacitive sensor
inputs or keypad LED drivers, the LDS6025 provides the flexibility to implement multiple touch inputs with
integrated lighting effects using a single controller.
When configured for capacitive sensing, the I/Os are directed through an integrated switch matrix to a
500 kHz sigma-delta CDC which senses changes in the external sensor array. When a sufficiently large
change in capacitance occurs, a sensor activation is registered and the host processor is notified. LED
lighting effects are automatically initiated by a touch event with no processor intervention required.
On-chip calibration logic continuously monitors the environment and automatically adjusts on-and-off
threshold levels to prevent false sensor activation. The LDS6025 is offered with both SPI-compatible and
I
output (GPIO) and interrupt output for additional communication with the host processor.
Figure 1. LDS6025 block diagram
I/F SEL
RESETB
2
VDDIO
C-compatible interfaces (active interface selected by I/F select pin) and features a general-purpose input/
VDD1
VSS1
TEST
Reset Logic
SD0/
SDA
Power-On
Serial Interface and
Control Logic
SDI/
A1
1
SCLK/
Calibration
SCL
RAM
CSB/
A0
Calibration
Engine
LDS6025
Interrupt and GPIO Logic
GPIO
Current Sources
Data Registers
Control and
LED Driver
INTB
Sigma-Delta
CDC
LED0-
LED4
Excitation
500 kHz
Source
C0
C1
C4
C5/LED0
C9/LED4
VDD2
VSS2
SHIELD
Related parts for LDS6025PYGI
LDS6025PYGI Summary of contents
Page 1
LDS6025 PureTouch ™ Capacitance Touch IC with Integrated Keypad LED Drivers The LDS6025 PureTouch™ controller empowers system designers to create streamlined, attractive and reliable product designs with capacitive touch controls. Integrated LED drivers allow visual feedback to be ...
Page 2
Flexible interface options • SPI-compatible serial I/F 2 • I C-compatible serial I/F • Separate V level for serial interface DDIO • GPIO and Interrupt Output Flexible package options • 28 pin 4mm x 4mm QFN, 0.8mm max height • 28 pin 5.3mm x 10.2mm SSOP, 1.83mm max height Power supply range • Touch supply (VDD1): 1.65V - 1.95V • LED supply (VDD2): 3.0V - 5.5V • ...