SX8674-PB-0116

SMART PROXIMITY SENSING PRODUCT BRIEF
KEY FEATURES
• Low power operation
–– 1.65V to 3.7V (SX8651/53)
–– 2.3V to 3.6V (SX8674/75/76/77/78)
–– 30µA @ 2.3V 8ksps
–– 0.4µA stand-by current
• 4/5-wire touch screen interface with
programmable digital filtering/averaging
• Supports various multi-touch gestures such
as pinch/stretch/rotate on low cost 4-wire
resistive touch screen
• Fully programmable proximity sensing
(SX8674/76)
–– > 5cm detection distance
–– No additional components required
• Built-in haptics driver for LRA and ERM
(SX8674/75)
–– Up to 250 mA drive capability
–– Short circuit and over temperature
protection
• On-chip ESD protection up to ±15kV
• Ultra-small footprint solution:
–– SX8651/53:
1.46 mm x 1.96 mm 12-WLCSP,
3 mm x 3mm 12-DFN,
4 mm x 3mm 14-DFN
–– SX8674/75/76/77/78:
2.07 mm x 2.07mm 19-WLCSP,
4 mm x 4mm 20-QFN
SX8651/53/74/75/76/77/78
RESISTIVE TOUCH SCREEN CONTROLLER
It is the world’s first haptics enabled, multi-touch resistive touch screen controller with
proximity sensing and ±15kV ESD protection. The SX8674, SX8675 and SX8676 belong
to a family of high performance, haptics-enabled multi-touch, 4/5-wire resistive touch
screen controllers with proximity detection that are optimized for hand held applications
such as mobile phones, portable music players, game machines, point-of-sales terminal,
and other consumer and industrial applications. They feature a wide input supply
ranging from 2.3V to 3.6V.
• Dedicated hardware reset pin
SX8674
• 400kHz I²C interface
APPLICATIONS
• Game machines, portable music players
• Mobile phones
• DSC
• GPS
• Conference phone
• Home appliance control panels
• POS/POI terminals
• Touch screen monitors
VDD
GND
32K
& 1.8 MHz
OSC
POR
IBIAS
VREG
X+/BR
Y+/TR
LDO
MGND
HAPTICS
INTERFACE
TEMP
SENSOR
MOUTP
MOUTN
MIN
ADDR
TOUCHSCREEN/
PROXIMITY SENSING
INTERFACE
NRST
NIRQ
CTRL
X-/TL
Y-/BL
MVDD
ANALOG
SENSING
12-ADC
DIGITAL
PROCESSING
HOST
I/F
SCL
SDA
AUX2
AUX1/WIPER
AUX3
SX8674 Block Diagram
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1
SMART PROXIMITY SENSING PRODUCTS | PRODUCT BRIEF
Electrical Characteristics
Symbol
Description
Condition
Min
Typ
Max
Unit
2.3
-
3.6
V
-
0.4
0.75
µA
1.7
-
µA
Supply
VDD
Main supply voltage
OFF
(MAN mode, no command, HAPT OFF)
WAIT
(PENDET/TRG mode, pen up, PROX OFF, HAPT OFF)
IDD
Main supply current
MVDD
Haptics supply voltage
MIDD
Haptics supply current
TOUCH1
(PENTRG mode, pen down, X+Y, RATE=4kcps, Nfilt=1, POWDLY=0.5us,
touch screen current excluded, HAPT OFF, VDD=2.3V)
-
30
-
µA
TOUCH2
(PENTRG mode, pen down, X+Y, RATE=3kcps, Nfilt=7, POWDLY=0.5us,
touch screen current excluded, HAPT OFF)
-
120
160
µA
PROX
(PENDET/TRG mode, pen up, TOUCHRATE=80cps, PROX ON, SCANPERIOD=200ms, HIGHIM=ON, SENSITIVITY=Max,
FREQ=150kHz, BOOST=OFF, HAPT OFF)
-
8
20
µA
HAPT
(MAN mode, no command, LRA-PWM mode, MIN= 44.8kHz/50%,
GAIN = Max, BW = 100, MOUTP/N floating, Squelch=011)
-
115
145
µA
VDD
-
3.6
V
OFF
-
0.01
1
µA
SQUELCH
(LRA-PWM mode, MIN= 44.8kHz/50%, GAIN = Max,
BW = 100, MOUTP/N floating, Squelch=011)
-
6
10
µA
MultiProximity
touch
Haptics
TYPICAL APPLICATION CIRCUIT
ORDERING INFORMATION
Part Number
Package (mm)
SX8651IWLTRT
3x3 DFN-12
x
SX8651ICSTRT
1.46x1.96 WLCSP-12
x
SX8653IWLTRT
4x4 DFN-14
x
SX8653ICSTRT
1.46x1.96 WLCSP-12
x
SX8674IWLTRT
4x4 QFN-20
x
x
Generic
x
Generic
SX8674ICSTRT
2.07x2.07 WLCSP-19
x
SX8675IWLTRT
4x4 QFN-20
x
Generic
SX8675ICSTRT
2.07x2.07 WLCSP-19
x
SX8676IWLTRT
4x4 QFN-20
x
x
Generic
SX8676ICSTRT
2.07x2.07 WLCSP-19
x
x
SX8677IWLTRT
4x4 QFN-20
x
x
Immersion
x
Immersion
SX8677ICSTRT
2.07x2.07 WLCSP-19
x
SX8678IWLTRT
4x4 QFN-20
x
Immersion
SX8678ICSTRT
2.07x2.07 WLCSP-19
x
Immersion
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•
phone: (805) 498-2111
•
fax: (805) 498-3804
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reserves the right to make changes to, or discontinue any products described in this document without further notice. Semtech makes no warranty, representation
or guarantee, express or implied, regarding the suitability of its products for any particular purpose. ©2016 Semtech Corporation. All rights reserved. SX8674-PB-0116