Productos
The DS3502U+T&R is a Maxim/ADI I2C nonvolatile 10kOhm digital potentiometer with 256 taps. 8-bit resolution with EEPROM wiper position storage. I2C interface up to 400kHz. Rheostat and potentiometer configurations. 2.7V-5.25V supply. MSOP-8 compact package. Tape and reel.
Especificaciones
| Tipo | I2C Nonvolatile Digital Potentiometer |
| Resistance | 10 kOhm |
| Taps | 256 (8-bit resolution) |
| Configuración | Rheostat / Potentiometer |
| Interface | I2C (up to 400 kHz) |
| Memory | Nonvolatile (EEPROM) |
| Tensión de alimentación | 2.7V to 5.25V |
| Temperatura de funcionamiento | -40 to +85C |
| Paquete | MSOP-8 (3x3mm) |
Principio de funcionamiento
The DS3502 uses a resistor ladder with 256 taps connected to an analog multiplexer. The 8-bit I2C register selects which tap connects to the wiper output. On power-up, the EEPROM-stored wiper value is automatically loaded. Write mode updates the wiper position immediately; EEPROM write stores the value for next power-up. The device can be configured as a 3-terminal potentiometer (H, L, W) or 2-terminal rheostat (H, W). The I2C address is configurable via the A0 pin.
Aplicaciones
- Volume control
- Bias adjustment
- LCD contrast
- Calibration