DS1267 Datasheet, PDF (9/12 Pages) Dallas Semiconductor – Dual Digital Potentiometer Chip

DS1267
ANALOG RESISTOR CHARACTERISTICS (-40°C to +85°C; V_CC = 5.0V ± 10%)
PARAMETER
SYMBOL MIN TYP MAX UNITS NOTES
End-to-End Resistor Tolerance
-20
+20
%
10
Absolute Linearity
±.75
LDB
3
Relative Linearity
±0.3
LDB
4
-3 dB Cutoff Frequency
F_CUTOFF
Hz
6
Temperature Coefficient
750
ppm/C
CAPACITANCE
PARAMETER
Input Capacitance
Output Capacitance
SYMBOL
C_IN
C_OUT
MIN
(T_A=25°C)
TYP MAX UNITS NOTES
5
pF
7
pF
AC ELECTRICAL CHARACTERISTICS
(-40°C to +85°C; V_CC = 5.0V ± 10%)
PARAMETER
SYMBOL MIN TYP MAX UNITS NOTES
CLK Frequency
f_CLK
DC
10
MHz
8
Width of CLK Pulse
t_CH
50
ns
8
Data Setup Time
t_DC
30
ns
8
Data Hold Time
t_CDH
10
ns
8
Propagation Delay Time Low to
t_PLH
High Level Clock to Output
50
ns
8
Propagation Delay Time High to
t_PHL
Low Level
50
ns
8
RST High to Clock Input High
t_CC
50
ns
8
RST Low to Clock Input High
t_HLT
50
ns
8
RST Inactive
t_RLT
125
ns
8
CLK Rise Time, CLK Fall Time
t_CR
50
ns
8
NOTES:
1. All voltages are referenced to ground.
2. Resistor inputs cannot exceed the substrate bias voltage, Vb, in the negative direction.
3. Absolute linearity is used to determine wiper voltage versus expected voltage as determined by wiper
position. Device test limits ±1.6 LSB.
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