DS1844 Dallas Semiconductor, DS1844 Datasheet - Page 8

• Manufacturer Part Number: DS1844
• Description: Quad Digital Potentiometer
• Manufacturer: Dallas Semiconductor

ANALOG RESISTOR CHARACTERISTICS (-40°C to +85°C; V
2-WIRE ADDRESSABLE INTERFACE
AC ELECTRICAL CHARACTERISTICS
* fast mode
** standard mode
End-to-End Resistor
Tolerance
Absolute Linearity
Relative Linearity
-3dB Cutoff frequency
Temperature Coefficent
Port Select Setup
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
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PARAMETER
PARAMETER
SYMBOL
SYMBOL
t
t
t
t
t
HD:DAT
HD:STA
SU:DAT
f
t
SU:STO
SETUP
t
t
f
HIGH
cutoff
LOW
C
BUF
SCL
t
t
R
F
B
CONDITION
CONDITION
8 of 14
20+0.1C
20+0.1C
(-40°C to +85°C; V
MIN
MIN
-0.25
-0.5
100
250
-20
1.3
4.7
0.6
4.0
1.3
4.7
0.6
4.0
0.6
4.0
30
0
0
0
0
B
B
TYP
TYP
1000
750
300
300
300
400
MAX
MAX
+0.25
+0.5
+20
400
100
0.9
CC
CC
=2.7V to 5.5V)
=2.7V to 5.5V)
UNITS NOTES
UNITS NOTES
ppm/°C
LSB
LSB
kHz
kHz
pF
µs
µs
µs
µs
µs
µs
%
ns
ns
ns
ns
20,22
**,22
**,22
**,22
**,22
**,22
*,6,7,
**,22
**,22
**,22
**,22
**,22
*,5,8
DS1844
*,8
*,8
*,8
*,8
*,8
*,9
*,9
25
16
17
13
18
*,
9