Overview
The CAT5115ZI-10-GT3 is a single digital potentiometer (POT) produced by onsemi. It is designed as an electronic replacement for mechanical potentiometers and trim pots, making it ideal for automated adjustments in high-volume production lines and applications where periodic adjustments are necessary but difficult to access.
This device contains a 32-tap series resistor array connected between two terminals, RH and RL, with the wiper terminal RW controlled by three input pins: CS (Chip Select), U/D (Up/Down), and INC (Increment). The wiper position is determined by a five-bit up/down counter and decoder, and it defaults to the mid-point (tap 15) at power-up.
Key Specifications
| Parameter | Min | Max | Units | |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2.5 | - | 6.0 | V |
| Supply Current (Increment) at VCC = 6 V, f = 1 MHz | - | - | 100 | μA |
| Supply Current (Standby) | - | 0.01 | 1 | μA |
| Potentiometer Resistance (10 kΩ device) | 10 | - | - | kΩ |
| Potentiometer Resistance Tolerance | - | - | ±20% | % |
| Integral Linearity Error (IW ≤ 2 μA) | 0.5 | - | 1 | LSB |
| Differential Linearity Error (IW ≤ 2 μA) | 0.25 | - | 0.5 | LSB |
| Wiper Resistance at VCC = 5 V, IW = 1 mA | 70 | - | 200 | Ω |
| Operating Temperature Range | -40 | - | 85 | °C |
Key Features
- 32-tap series resistor array with RH, RL, and RW terminals.
- Controlled by three input pins: CS, U/D, and INC.
- Five-bit up/down counter and decoder for wiper position control.
- Defaults to mid-point (tap 15) at power-up.
- No memory storage for wiper position; resets to mid-point on power-up.
- Low supply current in standby mode.
- Operating voltage range from 2.5 V to 6.0 V.
- Available in various packages including PDIP-8, SOIC-8, TSSOP-8, and MSOP-8.
Applications
- Automated adjustments in high-volume production lines.
- Equipment requiring periodic adjustments in difficult-to-access or hazardous environments.
- Resistive dividers and variable resistance applications.
- Programmable instrumentation amplifiers.
- Programmable square wave oscillators (e.g., using the 555 timer IC).
- Programmable voltage regulators and I-to-V converters.
- Automatic gain control and programmable bandpass filters.
- Programmable current sources and sinks.
Q & A
- What is the CAT5115ZI-10-GT3 used for?
The CAT5115ZI-10-GT3 is used as an electronic replacement for mechanical potentiometers and trim pots, particularly in applications requiring automated adjustments.
- How many tap positions does the CAT5115ZI-10-GT3 have?
The device has 32 tap positions, including the resistor end points RH and RL.
- What are the control inputs for the CAT5115ZI-10-GT3?
The control inputs are CS (Chip Select), U/D (Up/Down), and INC (Increment).
- What is the default wiper position at power-up?
The wiper defaults to the mid-point, tap 15, at power-up.
- Does the CAT5115ZI-10-GT3 store the wiper position in memory?
No, the wiper position is not stored in memory and resets to the mid-point on power-up.
- What is the operating voltage range of the CAT5115ZI-10-GT3?
The operating voltage range is from 2.5 V to 6.0 V.
- What are the typical applications of the CAT5115ZI-10-GT3?
Typical applications include resistive dividers, programmable instrumentation amplifiers, programmable square wave oscillators, and more.
- What are the available package types for the CAT5115ZI-10-GT3?
The device is available in PDIP-8, SOIC-8, TSSOP-8, and MSOP-8 packages.
- What is the operating temperature range of the CAT5115ZI-10-GT3?
The operating temperature range is from -40°C to 85°C.
- Is the CAT5115ZI-10-GT3 RoHS-compliant?
