ST92E195C/D-ST92T195C/D - ELECTRICAL CHARACTERISTICS
AC ELECTRICAL CHARACTERISTICS (Cont’d)
A/D CONVERTER, EXTERNAL TRIGGER TIMING TABLE
(VDD= 5V +/-10%; TA= 0 to 70°C; unless otherwise specified)
Symbol
Parameter
OSCIN divide by OSCIN divide
2;min/max
by 1; min/max
Tlow
Pulse Width
Text
Period/fast Mode
Tstr
Start Conversion Delay
Value
min
max
1.5
INTCLK
78+1
INTCLK
0.5
1.5
Unit
ns
µs
INTCLK
A/D CONVERTER. ANALOG PARAMETERS TABLE
(VDD= 5V +/-10%; TA= 0 to 70°C; unless otherwise specified)
Parameter
Analog Input Range
Conversion Time Fast/Slow
typ (*)
Value
min
VSS
78/138
Sample Time Fast/Slow
Power-up Time
51.5/87.5
60
Resolution
8
Differential Non Linearity
1.5
Integral Non Linearity
2
Absolute Accuracy
2
Input Resistance
Hold Capacitance
Notes:(*)The values
(**)’LSBs’ , as
are expected at
used here, as a
25 Celsius degrees
value of VDD/256
with
VDD=
5V
(1)@ 24 MHz external clock
(2)including Sample time
(3)it must be considered as the on-chip series resistance before the sampling capacitor
(4)DNL ERROR= max {[V(i) -V(i-1)] / LSB-1}INL ERROR= max {[V(i) -V(0)] / LSB-i}
ABSOLUTE ACCURACY= overall max conversion error
max
VDD
2.5
3
3
1.5
1.92
Unit
(**)
V
INTCLK
INTCLK
µs
bits
LSBs
LSBs
LSBs
Kohm
pF
Note
(1,2)
(1)
(4)
(4)
(4)
(3)
242/249