Package Information
| CAD Model: | View CAD Model |
| Pkg. Type: | TQFN |
| Pkg. Code: | LHN |
| Lead Count (#): | 20 |
| Pkg. Dimensions (mm): | 4.0 x 4.0 x 0.80 |
| Pitch (mm): | 0.5 |
Environmental & Export Classifications
| Pb (Lead) Free | No |
| ECCN (US) | EAR99 |
| HTS (US) | 8542.39.0090 |
| Moisture Sensitivity Level (MSL) |
Product Attributes
| Lead Count (#) | 20 |
| Carrier Type | Reel |
| Pitch (mm) | 0.5 |
| Pkg. Dimensions (mm) | 4.0 x 4.0 x 0.80 |
| Pb (Lead) Free | No |
| Temp. Range (°C) | -40 to +125°C |
| Advanced Features | Shutdown feature & 3 Bytes General Purpose EEPROM |
| Channels (#) | 4 |
| End-to-End Temperature Coefficient (ppm/°C) | 50 |
| Interface | SPI |
| Length (mm) | 4 |
| MOQ | 1000 |
| Memory Type | Nonvolatile |
| Middlepoint Ratiometric Tempco | 4 |
| Pkg. Type | TQFN |
| Qualification Level | Standard |
| Resistance Options (kΩ) | 50 |
| Resistance Taper | Linear |
| Single Supply Voltage Range (V) | 5.5 |
| Supply Current Icc (µA) | 5 |
| Supply Voltage Vcc (Min) (V) | 2.7 |
| Supply Voltage Vcc Range | 2.7 to 5.5 |
| Taps (#) | 128 |
| Thickness (mm) | 0.8 |
| VL Terminal Voltage (Max) (V) | 5.5 |
| Width (mm) | 4 |
| Wiper Current (mA) | 3 |
| Wiper Resistance (ohms) | 70 |
Resources for ISL22446
Description
Support is limited to customers who have already adopted these products.
The ISL22446 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 SPI serial 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 DCP's IVR to the corresponding WR. The DCPs can be used as three-terminal potentiometers or as two-terminal variable resistors in a wide variety of applications including control, parameter adjustments, and signal processing.