mcp4161 - Uncategorized Microchip - Free user manual and instructions
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| Product Type | Digital Potentiometer |
| Number of Taps | 128 |
| Resistance Options | 10 kΩ, 50 kΩ, 100 kΩ |
| Interface | SPI |
| Supply Voltage | 2.7V to 5.5V |
| Resolution | 7-bit |
| Operating Temperature Range | -40°C to +125°C |
| Wiper Memory | Non-volatile (EEPROM) |
| Package Type | 8-pin MSOP, 8-pin PDIP, 8-pin SOIC |
| End-to-End Resistance Tolerance | ±20% |
| Temperature Coefficient | 50 ppm/°C typical |
| Shutdown Mode | Yes |
| Supply Current (Idle) | 5 μA typical |
| Power-On Reset | Yes, wiper set to mid-scale |
| Wiper Lock Function | Yes |
| Applications | Calibration, trimmer replacement, volume control |
Frequently Asked Questions - mcp4161 Microchip
What is the MCP4161?
The MCP4161 is a digital potentiometer from Microchip with 128 taps, SPI interface, and non-volatile memory.
What resistance values are available for the MCP4161?
The MCP4161 is offered in 10 kΩ, 50 kΩ, and 100 kΩ end-to-end resistance options.
How do I communicate with the MCP4161?
Communication is via the SPI interface. The device supports standard SPI commands to write/read the wiper register and control settings.
What is the supply voltage range?
The MCP4161 operates from 2.7V to 5.5V, making it suitable for both 3.3V and 5V systems.
Does the MCP4161 retain its wiper setting after power-off?
Yes, the wiper setting is stored in non-volatile EEPROM and is retained after power-off.
What is the resolution of the MCP4161?
The resolution is 7-bit, providing 128 discrete tap positions.
Can I use the MCP4161 in automotive environments?
Yes, it operates over an extended temperature range of -40°C to +125°C, suitable for automotive and industrial applications.
What packages are available for the MCP4161?
The MCP4161 comes in 8-pin MSOP, 8-pin PDIP, and 8-pin SOIC packages.
How do I enable shutdown mode?
Shutdown mode is activated via a SPI command. In shutdown, the wiper is open-circuited and power consumption is minimized.
What are typical applications for the MCP4161?
Common applications include calibration circuits, trimmer potentiometer replacement, and digital volume control.
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