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DS1680 Datasheet(PDF) 19 Page - Dallas Semiconductor

Part # DS1680
Description  Portable System Controller with Touch-Screen Control
PDF  23 Pages
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1680 Datasheet(HTML) 19 Page - Dallas Semiconductor

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DS1680
19 of 23
ADC CHARACTERISTICS
(0
°C to +70°C; V
CC, VAVD = 3.3V
± 10%)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Resistance of Digitizer Film
RD
250
600
1000
Ω
Resistance of On-Chip Driver
RDRIVER
15
30
Ω
Parasitic Capacitance Between X-
and Y-Plates of Digitizer
CXY
5
10
nF
Ladder Resistance
RREF
8
25
60
k
Ω
ADC Active Current
IAVDA
320
450
µA
5
ADC Standby Current
IAVDS
50
150
µA
6
Reference Current
IREF
150
550
µA
Input Leakage (AIN0, AIN1)
ILI
10
nA
Analog Input Capacitance
CIN
10
15
pF
Resolution
10
Bits
Differential Nonlinearity
EDL
±0.5
±1.0
LSB
Integral Nonlinearity
EIL
±0.5
±1.0
LSB
Offset Error
EOS
±1.0
±1.5
LSB
Gain Error
EG
±0.25
±1.0
%
ADC Clock Frequency
FOSCIN
2.5
MHz
Multiplexer Selector Path
Propagation Delay
tMUX
120
ns
COEN
Falling Edge to Data Bus
Driven
tOEA
80
ns
COEN
Rising Edge to Data Bus
High-Z
tOEZ
80
ns
POWER-FAIL AND RESET CHARACTERISTICS
(0
°C to +70°C; V
CC = 5.0V
± 10%)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
PFI Low to PFO Low
tPFD
100
ns
PFI High to PFO High
tPFU
100
ns
VCC Detect to RST (VCC Falling)
tRPD
100
ns
VCC Detect to RST (VCC Rising)
tRPU
250
ms
15,16
Reset Active Time
tRST
250
ms
15
Pushbutton Debounce
PBDB
250
ms
15
ST
Pulse Width
tST
20
ns
Chip-Enable Propagation Delay to
External SRAM
tCED
8
15
ns
VCCTP(MAX) to VCCSW(MIN) Fall Time
tFB
200
µs
20



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