Overview
Description
The ISL22346 integrates four digitally controlled potentiometers (DCP) and non-volatile memory on a monolithic CMOS integrated circuit. The digitally controlled potentiometers are implemented with a combination of resistor elements and CMOS switches. The position of the wipers are controlled by the user through the I2C bus interface. Each potentiometer has an associated volatile Wiper Register (WR) and a non-volatile Initial Value Register (IVR) that can be directly written to and read by the user. The contents of the WR controls the position of the wiper. At power-up the device recalls the contents of the two DCP's IVR to the corresponding WRs. The DCPs can be used as a three-terminal potentiometers or as a two-terminal variable resistors in a wide variety of applications including control, parameter adjustments, and signal processing.
Features
- Four potentiometers in one package
- 128 resistor taps
- I2C serial interface
- Three address pins, up to eight devices/bus
- Non-volatile storage of wiper position
- Wiper resistance: 70Ω typical @ VCC = 3.3V
- Shutdown mode
- Shutdown current 5µA max
- Power supply: 2.7V to 5.5V
- 50kΩ or 10kΩ total resistance
- High reliability
- Endurance: 1,000,000 data changes per bit per register
- Register data retention: 50 years @ T ≤ +55°C
- 20 Ld TSSOP or 20 Ld TQFN package
- Pb-free (RoHS compliant)
Comparison
Applications
Design & Development
Software & Tools
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
ISL22346UFRT20Z Active Samples Available
Buy Now
|
TQFN | Tray | 1 | 2.2 | Get Samples, |
| TQFN | Reel | 1 | |||
ISL22346UFV20Z Active Samples Available
Buy Now
|
TSSOP | Tube | 1 | 2.489 | Get Samples, |
| TSSOP | Reel | 1 | 2.489 | ||
ISL22346WFRT20Z Active Samples Available |
TQFN | Tray | 1 | 2.396 | Get Samples, |
ISL22346WFRT20Z-TK Active Samples Available
Buy Now
|
TQFN | Reel | 1 | Get Samples, | |
ISL22346WFV20Z Active Samples Available
Buy Now
|
TSSOP | Tube | 1 | 2.419 | Get Samples, |
| TSSOP | Reel | 1 | 2.362 |
Tips for Using This Parametric Table:
- Hide Filters button in header: Collapse or expands filters
- Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
- Reset button in header: Reset all filters to the page default
- Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
- Export button in header: Export the filtered results of the table to an Excel document
- Filter parts search bar in header: Type to filter table results by part number
- Hide column button in column headers: Select to hide columns in table
- AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
- Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
- Document icon next to product name in row: View the featured document for this product
- Chip icon next to the right of the document icon in row: View the block diagram for this product
- Cart icon to the right of the chip icon: Indicates that samples are available for this product