DS1803
ANALOG RESISTOR CHARACTERISTICS
PARAMETER
End-to-End Resistor Tolerance
Absolute Linearity
Relative Linearity
-3 dB Cutoff Frequency
Temperature Coefficient
Capacitance
C
I
f
CUTOFF
SYMBOL
MIN
-20
(-40° to +85°
CC
=2.7V to 5.5V)
C
C;V
TYP
MAX
+20
±0.75
±0.3
UNITS
%
LSB
LSB
Hz
750
5
ppm/
C
pF
NOTES
17
13
14
11
AC ELECTRICAL CHARACTERISTICS
PARAMETER
SCL Clock Frequency
Bus Free Time Between
STOP and START Condition
Hold Time (Repeated)
START Condition
Low Period of SCL Clock
High Period of SCL Clock
Data Hold Time
Data Setup Time
Rise Time of both SDA and
SCL Signals
Fall Time of both SDA and
SCL Signals
Setup Time for STOP
Condition
Capacitive Load for each Bus
Line
SYMBOL
f
SCI
t
BUF
t
HD;STA
t
LOW
t
HIGH
t
HD;DAT
t
HD;DAT
t
R
t
F
t
SU;STO
C
B
MIN
0
0
1.3
4.7
0.6
4.0
1.3
4.7
0.6
4.0
0
0
100
250
20+1C
B
20+1C
B
0.6
4.0
(-40° to +85°
CC
=2.7V to 5.5V)
C
C;V
TYP
MAX
400
100
UNITS
kHz
µs
µs
µs
µs
0.9
µs
ns
300
1000
300
300
ns
ns
µs
400
pF
6,7
8
9
9
NOTES
16
17
16
17
5
NOTES:
1. All voltages are referenced to ground.
2. I/O pins of fast mode devices must not obstruct the SDA and SCL lines if V
DD
is switched off.
3. I
CC
specified with SDA pin open SCL = 400 kHz clock rate.
4. I
CC
specified with V
CC
at 5.0V and SDA, SCL = 5.0V, -40° to +85°
C
C.
7 of 11
DALLAS [ DALLAS SEMICONDUCTOR ]
