th July 2011 9 www.semtech.com SX8657/SX8658 Haptics E" />
參數(shù)資料
型號： SX8658IWLTRT
廠商： Semtech
文件頁數(shù)： 61/61頁
文件大?。?/td> 0K
描述： IC TOUCH SCREEN 12BIT 20QFN
標(biāo)準(zhǔn)包裝： 1
類型： 電阻式，觸感驅(qū)動器
觸摸面板接口： 4，5 線
輸入數(shù)/鍵： 1 TSC，雨刷，鑰匙
分辨率（位）： 12 b
評估套件： *
數(shù)據(jù)接口： I²C，串行
電壓基準(zhǔn)： 內(nèi)部
電源電壓： 2.3 V ~ 3.6 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 20-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 20-QFN（4x4）
包裝： 標(biāo)準(zhǔn)包裝
其它名稱： SX8658IWLDKR
ADVANCED COMMUNICATIONS & SENSING
Rev 1 – 25
th July 2011
9
www.semtech.com
SX8657/SX8658
Haptics Enabled 4/5-Wire
Resistive Touchscreen Controller with Proximity Sensing
Symbol
Description
Conditions
Min
Typ.
Max
Unit
PROX
(PENDET/TRG mode, pen up,
TOUCHRATE=80cps, PROX ON,
SCANPERIOD=200ms,
HIGHIM=ON,
SENSITIVITY=Max,
FREQ=150kHz, BOOST=OFF,
HAPT OFF)
-
8
20
HAPT
(MAN mode, no command,
LRA-PWM mode,
MIN= 44.8kHz/50%, GAIN = Max,
BW = 100, MOUTP/N floating,
Squelch=011)
-
115
145
MVDD
Haptics supply voltage
-
VDD
-
3.6
V
OFF
-
0.01
1
A
MIDD
Haptics supply current
SQUELCH
(LRA-PWM mode,
MIN= 44.8kHz/50%, GAIN = Max,
BW = 100, MOUTP/N floating,
Squelch=011)
-
6
10
A
Digital I/Os (ADDR, SCL, SDA, NRST, NIRQ, AUX1, AUX2, AUX3, MIN)
SCL, SDA, NRST
0.8*VDD
-
3.6
VIH
High level input voltage
Other pins
0.8*VDD
-
VDD+0.2
V
VIL
Low level input voltage
-
-0.3
-
0.8
V
ILEAK
Input leakage current
-
-1
-
1
A
CI
Input capacitance
-
5
-
pF
VOH
High level output voltage
IOH = 4mA
0.8*VDD
-
V
VOL
Low level output voltage
IOL = 4mA
-
0.4
V
VPULL
External pull-up voltage
SCL, SDA, NRST, NIRQ
-
3.6
V
Haptics Interface
IDRV
Maximum drive current
(MOUTP/MOUTN)
MVDD = 3.6V
-
250
-
mA
VOFF
Output squelch differential error
(from 0V ideal)
LRA or ERM, PWM or I2C,
AmplitudeCode within squelch
range, GAIN = Max, BW = 100,
MOUTP/N floating, Squelch=011
0
(1)
0
(1)
mV
VERR
Output differential error
(from 1.135V ideal)
LRA or ERM, I2C,
AmplitudeCode = +127 (Max)
GAIN = Min, BW = 100,
MOUTP/N floating
125
(2)
0
125
(2)
mV
VDRV
Drive voltage (MOUTP/MOUTN)
-
VDDM
V
VDROP
Drop voltage (MOUTP/MOUTN)
From MVDD/MGND,
@250mA
-
150
mV
ISHORT
Short-circuit detection current
Measured @MIDD
-
300
-
mA
FMINC
Motor input (MIN) frequency in
I2C mode
40-60% duty cycle
-
50
MHz
HAPTRANGE = 0
12.8
-
25.6
kHz
FMINP
Motor input (MIN) frequency in
PWM mode
HAPTRANGE = 1
25.6
-
51.2
kHz
DCMIN
Motor input (MIN) duty cycle in
PWM mode
2
-
98
%
TWRNG
Warning temperature
-
120
-
TALRM
Alarm temperature
Junction temperature
-
155
-
°C
Touchscreen Interface
ARES
ADC resolution
12
-
bits
AOFF
ADC offset
-
± 1
-
AGE
ADC gain error
At full scale
-
0.5
-
ADNL
ADC differential non-linearity
-
± 1
-
AINL
ADC integral non-linearity
-
± 1.5
-
LSB
RBIAS
Biasing resistance
-
5
-
Proximity Sensing Interface
CDC
External capacitance to be
compensated
-
300
pF
tPROX
Scan period (reaction time)
Programmable
-
200
-
ms
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