CAT5122SDI-00-T10 ON Semiconductor, CAT5122SDI-00-T10 Datasheet - Page 5

• Manufacturer Part Number: CAT5122SDI-00-T10
• Manufacturer: ON Semiconductor

Specifications of CAT5122SDI-00-T10

• Number Of Elements: 1
• # Of Taps: 16
• Resistance (max): 100KOhm
• 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

Functional Description
wiper contact with 16−tap points that are digitally controlled
through a 2−wire up/down serial interface. Three end−to−
end resistance values are available: 10 kW, 50 kW and
100 kW.
In this configuration, the low terminal of the resistor array
is connected to ground (pin 2).
device, the wiper terminal and high terminal of the resistor
array is connected at pin 5. The CAT5121 is a similar
variable resistor, except the low terminal is connected to
pin 5.
Digital Interface Operation
serial interface is active: increment and decrement mode.
The serial interface is only active when CS is low.
The CAT5120/5121/5122 consist of a fixed resistor and a
The CAT5120 is designed to operate as a potentiometer.
The CAT5122 performs as a variable resistor. In this
The MiniPots have two modes of operation when the
W
Note: “W” is not a digital signal. It represents wiper transitions.
CS
U/D
CS
U/D
W
Note: “W” is not a digital signal. It represents wiper transitions.
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Figure 8. Serial Interface Timing Diagram, Decrement Mode
Figure 7. Serial Interface Timing Diagram, Increment Mode
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along the resistor array. When CS transitions from high to
low, the part will go into increment mode if U/D input is
high, and into decrement mode when U/D input is low. Once
the mode is set, the device will remain in that mode until CS
goes high again. A low−to−high transition at the U/D pin
will increment or decrement the wiper position depending
on the current mode (Figures 7 and 8).
inactive), the value of the counter is stored and the wiper
position is maintained.
minimum) tap position, the wiper will not wrap around to the
minimum (or maximum) position.
Power−On Reset
circuitry that sets the wiper position to midscale at
power−up. By default, the chip is in the increment mode.
The CS and U/D inputs control the position of the wiper
When the CS input transitions to high (serial interface
Note that when the wiper reaches the maximum (or
All parts in this family feature power−on reset (POR)
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