DS1868

11 of 14

CAPACITANCE

°C)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Input Capacitance

5

pF

3, 6

Output Capacitance

7

pF

3, 6

AC ELECTRICAL CHARACTERISTICS

(-40

°C to +85°C; V

±10%)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

CLK Frequency

DC

10

MHz

10

Width of CLK Pulse

50

ns

10

Data Setup Time

30

ns

10

Data Hold Time

10

ns

10

Propagation Delay Time Low to High Level

Clock to Output

50

ns

10, 13

Propagation Delay Time High to Low Level

50

ns

10, 13

RST

High to Clock Input High

50

ns

10

RST

Low from Clock Input High

50

ns

10

RST

Inactive

125

ns

10

Clock Low to Data Valid on a Read

30

ns

10

CLK Rise Time, CLK Fall Time

50

ns

10

NOTES:

1. All voltages are referenced to ground.

3. Capacitance values apply at 25

°C.

4. Absolute linearity is used to determine wiper voltage versus expected voltage as determined by wiper

position. Device test limits

±1.6 LSB.

5. Relative linearity is used to determine the change in voltage between successive tap positions. Device

test limits

±0.5 LSB.

°C and nominal supply voltage.

7. -3 dB cutoff frequency characteristics for the DS1868 depend on potentiometer total resistance:

DS1868-010; 1 MHz, DS1868-050; 200 kHz; and DS1868-100; 80 kHz.

10. See Figure 9(a), (b), and (c).

12. Supply current is dependent on clock rate (see Figure 11).

13. See Figure 10.

±10% and maximum V

±10%.

16. Valid at 25

°C only.