CAT5122SDI-10-GT10 ON Semiconductor, CAT5122SDI-10-GT10 Datasheet - Page 6

• Manufacturer Part Number: CAT5122SDI-10-GT10
• Manufacturer: ON Semiconductor

Specifications of CAT5122SDI-10-GT10

• Number Of Elements: 1
• # Of Taps: 16
• Resistance (max): 10KOhm
• 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: 5
• Lead Free Status / RoHS Status: Compliant

Applications Information
controlled adjustable resistance, such as LCD contrast
control, where voltage biasing adjusts the display contrast.
Alternative Positive LCD Bias Control
of the CAT5120. Connect the mechanical potentiometer to
the positive input of a noninverting op amp (Figure 9) to
select a portion of the input signal by digitally controlling the
wiper terminal. Figure 10 shows a similar circuit for the
CAT5121.
The MiniPots are intended for circuits requiring digitally
Use an op amp to provide buffering and gain on the output
CAT5120
Figure 9. Positive LCD Bias Control
Figure 11. Adjustable Gain Circuit
+5 V
L
H
CAT5121
V
W
IN
H
L
V
30 V
CC
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V
V
OUT
OUT
6
Adjustable Gain
digitally adjust the gain of a noninverting op amp
configuration. Connect the CAT5121 in series with a resistor
to ground to form the adjustable gain control of a
noninverting amplifier. The Minipots have a low 5 ppm/°C
ratiometric tempco that allows for a very stable adjustable
gain configuration over temperature.
Figures 11 and 12 show how to use the variable resistor to
Figure 10. Positive LCD Bias Control
CAT5121
Figure 12. Adjustable Gain Circuit
L
V
IN
+5 V
CAT5120
W
L
H
H
V
CC
30 V
V
OUT
V
OUT