Digital potentiometer, 1-channel, 127 steps, 50 kOhm, SPI, TSSOP

7-Bit Single, +36V (±18V) Digital POT w/SPI

Description:
The MCP41HVX1 family of devices have dual power rails (analog and digital). The analog power rail allows high voltage on the resistor network terminal pins. The analog voltage range is determined by the V+ and Vvoltages. The maximum analog voltage is +36V, while the operating analog output minimum specifications are specified from either 10V or 20V. As the analog supply voltage becomes smaller, the analog switch resistances increase, which affects certain performance specifications. The system can be implemented as dual rail (±18V) relative to the digital logic ground (DGND). The device also has a Write Latch (WLAT) function, which will inhibit the volatile wiper register from being updated (latched) with the received data until the WLAT pin is low. This allows the application to specify a condition where the volatile wiper register is updated (such as zero crossing).

Features
- High-Voltage Analog Support:
- +36V Terminal Voltage Range (DGND = V-)
- ±18V Terminal Voltage Range (DGND = V- + 18V)
- Wide Operating Voltage:
- Analog: 10V to 36V (specified performance)
- Digital: 2.7V to 5.5V
1.8V to 5.5V (DGND ? V- + 0.9V)
- Single Resistor Network
- Potentiometer Configuration Options
- Resistor Network Resolution
- 7-bit: 127 resistors (128 Taps)
- 8-bit: 255 resistors (256 Taps)
- RAB Resistance Options:
- 5kOhm - 10 kOhm
- 50kOhm - 100 kOhm
- High Terminal/Wiper Current (IW) Support:
- 25 mA (for 5 kOhm)
- 12.5 mA (for 10 kOhm)
- 6.5 mA (for 50 kOhm and 100 kOhm)
- Zero-Scale to Full-Scale Wiper Operation
- Low Wiper Resistance: 75 Ohm (Typical)
- Low Temperature Coefficient:
- Absolute (Rheostat): 50 ppm typical (0°C to +70°C)
- Ratiometric (Potentiometer): 15 ppm typical
- SPI Serial Interface (10 MHz, Modes 0,0 and 1,1)
- Resistor Network Terminal Disconnect Via:
- Shutdown pin (SHDN)
- Terminal Control (TCON) register
- Write Latch (WLAT) Pin to Control Update of Volatile Wiper Register (such as Zero Crossing)
- Power-on Reset/Brown-out Reset for Both:
- Digital supply (VL/DGND); 1.5V typical
- Analog supply (V+/V-); 3.5V typical
- Serial Interface Inactive Current (3 µA Typical)
- 500 kHz Typical Bandwidth (-3 dB) Operation (5.0 kOhm Device)
- Extended Temperature Range (-40°C to +125°C)
- Package Types: TSSOP-14 and VQFN-20 (5x5)