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ISL90842

Quad Digitally Controlled Variable Resistors

Intersil 

ISL90842

Typical Performance Curves

160

VCC=2.7, T=+85°C

140

120 VCC=2.7, T=-40°C

VCC=2.7, T=+25°C

100

80

60

40

20 VCC=5.5, T=-40°C

VCC=5.5, T=+85°C

VCC=5.5, T=+25°C

0

0

50

100

150

200

250

TAP POSITION (DECIMAL)

FIGURE 1. WIPER RESISTANCE vs TAP POSITION

[I(RW) = VCC / RTOTAL] FOR 50kΩ (U)

1.8

1.6

1.4

1.2

1

0.8

0.6

0.4

0.2

0

2.7

-40°C

+25°C

3.2

3.7

4.2

VCC (V)

+85°C

4.7

5.2

FIGURE 2. STANDBY ICC vs Vcc

0.3

VCC=2.7, T=+25°C

0.2

VCC=5.5, T=+25°C

0.1

0

-0.1

VCC=5.5, T=+85°C

-0.2

-0.3

32

VCC=2.7, T=-40°C VCC=2.7, T=+85°C

VCC=5.5, T=-40°C

82

132

182

232

TAP POSITION (DECIMAL)

FIGURE 3. DNL vs TAP POSITION FOR 50kΩ (U)

0.5

VCC=2.7, T=+25°C

0.3

VCC=5.5, T=-40°C

0.1

VCC=5.5, T=+85°C

VCC=2.7, T=+85°C

-0.1

-0.3

-0.5

32

VCC=5.5, T=+25°C

82

132

182

TAP POSITION (DECIMAL)

VCC=2.7,

T=-40°C

232

FIGURE 4. INL vs TAP POSITION FOR 50kΩ (U)

1.5

1

0.5 2.7V

0 5.5V

-0.5

-1

-1.5

-40

-20

0

20

40

60

80

TEMPERATURE (°C)

FIGURE 5. END TO END RTOTAL % CHANGE vs

TEMPERATURE

35

25

15

5

-5

-15

-25

32

82

132

182

232

TAP POSITION (DECIMAL)

FIGURE 6. TC IN ppm

6

FN8096.1

January 16, 2006

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