Dc electrical characteristics (-40°c to +85°c; v, 7v to 5.5v), Analog resistor characteristics (-40°c to +85°c; v – Rainbow Electronics DS1845 User Manual
Page 10
DS1845
10 of 13
DC ELECTRICAL CHARACTERISTICS
(-40°C to +85°C; V
CC
=2.7V to 5.5V)
PARAMETER
SYMBOL
CONDITION
MIN
TYP
MAX
UNITS
NOTES
Supply Current
Active
I
CC
0.5
mA
16,17
Input Leakage
I
LI
-1
+1
µ
A
Wiper Resistance
3V
5V
R
W
500
250
1000
500
Ω
Wiper Current
I
W
1
mA
Input Logic 1
V
IH
0.7 V
CC
V
CC
+0.5
V
1,2
Input Logic 0
V
IL
GND-0.5
0.3 V
CC
V
1,2
Input Logic levels
A0, A1, A2
Input Logic 1
Input Logic 0
0.7 V
CC
GND-0.5
V
CC
+0.5
0.3 V
CC
V
4
Input Current each
I/O pin
0.4<V
I/O
<0.9V
DD
-10
+10
µ
A
Standby Current
3V
5V
I
stby
15
25
40
µ
A
5
V
OL1
3 mA sink
current
0.0
0.4
V
Low Level Output
Voltage (SDA)
V
OL2
6 mA sink
current
0.0
0.6
V
I/O Capacitance
C
I/O
10
pF
Pulse width of spikes
which must be
suppressed by the
input filter
t
SP
Fast Mode
0
50
ns
WP Internal Pull Up
Resistance, R
wp
R
wp
40
65
100
k
Ω
ANALOG RESISTOR CHARACTERISTICS (-40°C to +85°C; V
CC
=2.7V to 5.5V)
PARAMETER
SYMBOL
CONDITION
MIN
TYP
MAX
UNITS
NOTES
End-to-End
Resistance
-20
+20
%
19
Absolute Linearity
-0.5
+0.5
LSB
13
Relative Linearity
-0.25
+0.25
LSB
14
-3 dB Cutoff
frequency
f
cutoff
kHz
12
Temperature
Coefficient
750
ppm/°C
15