7v to 5.5v) – Rainbow Electronics DS1803 User Manual
Page 7
DS1803
7 of 11
ANALOG RESISTOR CHARACTERISTICS
(-40
°
C to +85
°
C;V
CC
=2.7V to 5.5V)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
End-to-End Resistor Tolerance
-20
+20
%
17
Absolute Linearity
±0.75
LSB
13
Relative Linearity
±0.3
LSB
14
-3 dB Cutoff Frequency
f
CUTOFF
Hz
11
Temperature Coefficient
750
ppm/
C
Capacitance
C
I
5
pF
AC ELECTRICAL CHARACTERISTICS
(-40
°
C to +85
°
C;V
CC
=2.7V to 5.5V)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
SCL Clock Frequency
f
SCI
0
0
400
100
kHz
16
17
Bus Free Time Between
STOP and START Condition
t
BUF
1.3
4.7
µs
16
17
Hold Time (Repeated)
START Condition
t
HD;STA
0.6
4.0
µs
5
Low Period of SCL Clock
t
LOW
1.3
4.7
µs
High Period of SCL Clock
t
HIGH
0.6
4.0
µs
Data Hold Time
t
HD;DAT
0
0
0.9
µs
6,7
Data Setup Time
t
HD;DAT
100
250
ns
8
Rise Time of both SDA and
SCL Signals
t
R
20+1C
B
300
1000
ns
9
Fall Time of both SDA and
SCL Signals
t
F
20+1C
B
300
300
ns
9
Setup Time for STOP
Condition
t
SU;STO
0.6
4.0
µs
Capacitive Load for each Bus
Line
C
B
400
pF
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
°
C to +85
°
C.