LTC6947IUFD

Clock Generators, PLLs, Frequency Synthesizers Overview

The LTC6947IUFD is a precision, low-noise, digitally programmable resistor array manufactured by Analog Devices Inc. It features five independent resistors with a total of 256 tap positions per resistor, allowing for fine-grained resistance adjustment. The device utilizes an I2C-compatible serial interface for configuration. Key electrical specifications include a maximum resistance value of 10 kOhms and a typical wiper resistance of 50 Ohms. The unit operates within a supply voltage range of 2.7V to 5.5V and maintains performance across an industrial temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Five independent 10-bit digitally programmable resistors
• I2C-compatible serial interface for control
• Low noise and low power consumption design
• Non-volatile memory retains settings upon power cycle

Clock Generators, PLLs, Frequency Synthesizers Applications

• Programmable gain amplifiers
• Voltage reference trimming
• Sensor signal conditioning
• Audio volume control circuits

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix 'IUFD' against the manufacturer's current datasheet to confirm package type (DFN-16) and temperature grade. Ensure compatibility with system I2C bus speeds and voltage levels before procurement. Check for recent lifecycle status updates such as obsolescence or recommended replacements.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when multiple independent, non-volatile programmable resistors are required in a compact footprint. Compare total wiper resistance and noise specifications against application requirements. Verify that the 10-bit resolution meets the necessary adjustment granularity for the target circuit design.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the LTC694x family of digitally controlled potentiometers. It is designed for applications requiring precise, software-adjustable resistance values without mechanical wear. The DFN-16 package offers a small form factor suitable for space-constrained PCB layouts.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Consult the official Analog Devices replacement matrix for direct pin-to-pin or functionally equivalent alternatives. Verify parameter compatibility including resistance range, interface protocol, and package dimensions before substitution.