Single, 128-taps Low Voltage Digitally Controlled Potentiometer (XDCP™)
Jump to Page Section:
Overview
Description
The ISL23318 is a volatile, low voltage, low noise, low power, I2C Bus™, 128 Taps, single digitally controlled potentiometer (DCP), which integrates DCP core, wiper switches and control logic on a monolithic CMOS integrated circuit. The digitally controlled potentiometer is 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. The potentiometer has an associated volatile Wiper Register (WR) that can be directly written to and read by the user. The contents of the WR controls the position of the wiper. When powered on, the ISL23318s wiper will always commence at mid-scale (64 tap position). The low voltage, low power consumption, and small package of the ISL23318 make it an ideal choice for use in battery operated equipment. In addition, the ISL23318 has a VLOGIC pin allowing down to 1. 2V bus operation, independent from the VCC value. This allows for low logic levels to be connected directly to the ISL23318 without passing through a voltage level shifter. The DCP can be used as a three-terminal potentiometer or as a two-terminal variable resistor in a wide variety of applications including control, parameter adjustments, and signal processing.
Features
- 128 resistor taps
- I2C serial interface
- No additional level translator for low bus supply
- Two address pins allow up to four devices per bus
- Power supply
- VCC = 1.7V to 5.5V analog power supply
- VLOGIC = 1.2V to 5.5V I2C bus/logic power supply
- Wiper resistance: 70Ω typical @ VCC = 3.3V
- Shutdown Mode - forces the DCP into an end-to-end open circuit and RW is shorted to RL internally
- Power-on preset to mid-scale (64 tap position)
- Shutdown and standby current <2.8µA max
- DCP terminal voltage from 0V to VCC
- 10kΩ, 50kΩ or 100kΩ total resistance
- Extended industrial temperature range: -40°C to +125°C
- 10 Ld MSOP or 10 Ld UTQFN packages
- Pb-free (RoHS compliant)
Applications
Applications
- Gain adjustment in battery powered instruments
- Trimming sensor circuits
- Power supply margining
- RF power amplifier bias compensation
Documentation
|
|
Date | |
|---|---|---|
| PDF 1.09 MB | Datasheet | |
| PDF 414 KB | Product Advisory | |
| PDF 1.40 MB | Manual - Development Tools | |
| PDF 228 KB | End Of Life Notice | |
| PDF 208 KB | Price Increase Notice | |
| PDF 345 KB | End Of Life Notice | |
| PDF 363 KB | Product Advisory | |
| PDF 117 KB | Product Change Notice | |
| PDF 251 KB | Application Note | |
| PDF 503 KB | Application Note | |
| PDF 287 KB | Application Note | |
11 items
|
||
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.
Processing table
Pkg. Type |
Carrier Type |
MOQ |
Buy / Sample |
|
|---|---|---|---|---|
| Part Number | ||||
ISL23318TFUZ Active Samples Available |
MSOP | Tube | 8000 | Get Samples, |
ISL23318TFUZ-TK Active Samples Available |
MSOP | Reel | 8000 | Get Samples, |
ISL23318WFRUZ-T7A Active Samples Available |
uTQFN | Reel | 250 | Get Samples, |
| uTQFN | Reel | 8000 |
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
Support
Renesas Samples
Select an orderable part number:
| Orderable Part ID | Sample |
|---|---|
| ISL23318TFUZ | Availability |
| ISL23318TFUZ-TK | Availability |
| ISL23318WFRUZ-T7A | Availability |