ISL22429 Datasheet, PDF (7/13 Pages) Intersil Corporation – Low Noise, Low Power, SPI Bus, 128 Taps, Wiper Only

ISL22449
Typical Performance Curves
100
90 ^{VCC = 3.3V, T = +125°C}
80
70
60
50
40
30
20 ^VCC ^{= 3.3V, T = +20°C}
V_CC = 3.3V, T = -40°C
10
0
0
20
40
60
80
100
120
TAP POSITION (DECIMAL)
FIGURE 1. WIPER RESISTANCE vs TAP POSITION
[I(RW) = V_CC/R_TOTAL] FOR 10kΩ (W)
1.4
1.2
1.0
0.8
T = +125°C
0.6
0.4
T = +25°C
0.2
0
2.7
3.2
3.7
4.2
4.7
5.2
V_CC (V)
FIGURE 2. STANDBY I_CC vs V_CC
0.2
T = +25°C
V_CC = 2.7V
0.1
0
-0.1
-0.2
0
V_CC = 5.5V
20
40
60
80
100
120
TAP POSITION (DECIMAL)
FIGURE 3. DNL vs TAP POSITION IN VOLTAGE DIVIDER
MODE FOR 10kΩ (W)
0.2
T = +25°C
0.1
V_CC = 2.7V
0
-0.1
-0.2
0
V_CC = 5.5V
20
40
60
80
100
120
TAP POSITION (DECIMAL)
FIGURE 4. INL vs TAP POSITION IN VOLTAGE DIVIDER
MODE FOR 10kΩ (W)
1.3
10k
1.1
0.9
0.7
0.5
V_CC = 5.5V
0.3
V_CC = 2.7V
0.1
50k
-0.1
-0.3
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
FIGURE 5. ZS_ERROR vs TEMPERATURE
0.0
-0.3 _{VCC = 2.7V}
-0.6
50k
V_CC = 5.5V
-0.9
10k
-1.2
-1.5
-40 -20
0
20
40 60 80 100 120
TEMPERATURE (ºC)
FIGURE 6. FS_ERROR vs TEMPERATURE
7
FN6333.3
July 17, 2009