The ISL90842 is a quad digitally controlled variable resistor from Intersil, with low noise, low power, I2C bus, 256 taps.
The ISL90842 integrates four digitally controlled potentiometers (DCP) that function as variable resistors. Each potentiometer provides 256 taps with 0.4 % resolution and is accessed via a standard I²C (12C) serial interface. The device operates from 2.7 V to 5.5 V and offers a standby current of less than 5 µA.
The IC is supplied in a 14‑lead plastic TSSOP package (V14) and is RoHS compliant. Detailed electrical specifications, timing diagrams, and functional block diagrams are provided for designers who need precise resistance control in low‑noise, low‑power applications.
| Number of variable resistors | 4 |
|---|---|
| Resistor taps per potentiometer | 256 |
| Supply voltage range | 2.7 V to 5.5 V |
| Standby current | <5 µA |
| Wiper resistance (typical at 3.3 V) | 70 Ω |
| Package type | 14‑lead TSSOP |
The IC is supplied in a 14‑pin TSSOP package.