CAT5122TBI50GT3 ON Semiconductor, CAT5122TBI50GT3 Datasheet - Page 6
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CAT5122TBI50GT3
Manufacturer Part Number
CAT5122TBI50GT3
Description
Digital Potentiometer ICs DPP MiniPot 16 taps Up/Down
Manufacturer
ON Semiconductor
Datasheet
1.CAT5122SDI10GT3.pdf
(12 pages)
Specifications of CAT5122TBI50GT3
Number Of Pots
Single
Taps Per Pot
16
Resistance
50 KOhms
Wiper Memory
Volatile
Buffered Wiper
Non Buffered
Digital Interface
Serial (2-Wire)
Operating Supply Voltage
2.7 V to 5.5 V
Supply Current
25 uA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Description/function
16-Tap MiniPot Digitally Programmable Potentiometers with 2-Wire Interface
Mounting Style
SMD/SMT
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Package / Case
SOT-23-5
Temperature Coefficient
200 PPM / C
Lead Free Status / RoHS Status
Lead free / RoHS 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
http://onsemi.com
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