CAT5119TBI50T3 ON Semiconductor, CAT5119TBI50T3 Datasheet - Page 6

• Manufacturer Part Number: CAT5119TBI50T3
• Manufacturer: ON Semiconductor

Specifications of CAT5119TBI50T3

• Number Of Elements: 1
• # Of Taps: 32
• Resistance (max): 50KOhm
• Power Supply Requirement: Single
• Interface Type: Serial (2-Wire)
• Single Supply Voltage (typ): 3.3/5V
• Dual Supply Voltage (typ): Not RequiredV
• Single Supply Voltage (min): 2.7V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 6
• Package Type: SOT-23
• Lead Free Status / RoHS Status: Compliant

CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
APPLICATIONS INFORMATION
The MiniPots are intended for circuits requiring
digitally controlled adjustable resistance, such as LCD
contrast control, where voltage biasing adjusts the
display contrast.
Alternative Positive LCD Bias Control
An op amp can be used to provide buffering and gain
on the output of the CAT5110/CAT5125. This can be
done by connecting the wiper output to the positive
input of a noninverting op amp as shown in Figure 3.
Figure 4 shows a similar circuit for the CAT5119/
CAT5124.
Doc. No. MD-2120 Rev. L
Figure 3. Positive LCD Bias Control
Figure 5a. Adjustable Gain Circuit
CAT5110/CAT5125
CAT5118/CAT5123
+5V
L
H
V
IN
W
H
L
V
CC
30V
V
OUT
V
OUT
6
Adjustable Gain
Figure 5 shows how to use either a variable resistor or
a potentiometer to digitally adjust the gain of a
noninverting op amp configuration, by connecting the
Minipot in series with a resistor to ground. The
MiniPots have a low 5ppm/ºC ratiometric tempco that
allows for a very stable adjustable gain configuration
over temperature.
CAT5119/CAT5124
Figure 5b. Adjustable Gain Circuit
Figure 4. Positive LCD Bias Control
L
V
CAT5110/CAT5125
+5V
IN
H
L
W
Characteristics subject to change without notice
H
V
CC
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30V
V
OUT
V
OUT