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CYRUSTEK CO.
ES5108 3 1/2 Digit
ADC with serial output
continued from previous page
Parameter
Symbol
Test Condition
Min.
Typ.
Max.
Units
Analog COMMON Voltage
(with respect to V )
–
25K
Between
Common and Posi-
tive Supply
2.8
3.0
3.2
V
Analog COMMON Temper-
ature Cofficient
–
25K
Between
Common
and
,
C TA
C
–
60
75
ppm/ C
Segment Drive Voltage
–
to
=9V
4
5
6
V
Back plane Drive Voltage
–
to
=9V
4
5
6
V
Supply Current (Does not
include COMMON current)
–
=0V
–
1.2
1.6
mA
Frequency counter input
level
–
–
–
V
DGND
+1.5
Input terminals :
BZINM, BZINS, MAX/MIN, HOLD, RESET, FREQ/VOLT, CLK, DP1, DP2, DP3
Input logic high voltage
–
–
–
V
Input logic low voltage
–
DGND
+1.5
Pull down current
–
=
–
5
–
A
AC Characteristics
Characteristics
Symbol
Min.
Typ.
Max.
Unit
LCD display frequency
–
167
–
Hz
Operating frequency
–
40
–
KHz
Buzzer drive frequency
–
2.5
–
KHz
FREQ-IN Waveform Rising Time
–
–
20
ns
FREQ-IN Waveform Falling Time
–
–
20
ns
FREQ-IN Waveform Pulse Width
17
–
–
ns
Clock Delay Time
1
–
5000
s
Data Set-up Time
–
–
500
ns
EOC Pulse Width
–
–
10
ms
Clock Pulse Width
500
–
–
ns
MAX/MIN duration
0.8
–
–
sec
MAX/MIN and HOLD Keys
Key debounce time
–
32
38
ms
Key hold time
50
–
–
ms
7
July 4, 2002
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