AD5272BRMZ-20-RL7

AD5272BRMZ-20-RL7 is a typical Digital Potentiometer for data acquisition. It is a single-channel, 7-bit, 256-position device which features a ±20 % resistor ratio tolerance and an I2C interface. The AD5272BRMZ-20-RL7 is an effective solution for data acquisition in a wide range of applications.

Types of Applications

AD5272BRMZ-20-RL7 is suitable for a variety of applications such as:

• Amplifier gain control
• Automatic volume control (AVC)
• Direct digital frequency synthesis (DDFS)
• Precision velocity control
• Portable battery powered systems
• Filter control in audio systems

Working Principle

The AD5272BRMZ-20-RL7 is a digital potentiometer with 256 resettable and programmable tap settings. It utilizes a proprietary Thin Film-on-Silicon (TFoS) technology that enables low power operation. The device has two main components: the MOSFETs and the resistor ladder network. The MOSFETs control the resistance on the wiper node by connecting it to the desired tap point as programmed. The resistor ladder network consists of one end terminal and 7 sets of resistors. The resistance values of each resistor are based on the programmed wiper setting.

The I2C interface is the bus used to control the digital potentiometer. This bus allows the user to program the digital potentiometer with a desired setting. The AD5272BRMZ-20-RL7 is capable of operating from 2.7V to 5.5V, allowing for small shifts in voltage without affecting the wiper setting.

Features and Benefits

AD5272BRMZ-20-RL7 has the following features and benefits:

• 7-bit, 256-position configuration enables precise adjustments in increments of 0.39%.
• ±20 % resistor ratio tolerance
• Low current standby operation – 5μA
• I2C slave interface permits addressability and control
• Programmable address and data rate
• Low-cost, single channel 8-lead SOIC footprint
• 2.7 V to 5.5 V supply voltage range

The AD5272BRMZ-20-RL7 has many useful features, making it suitable for a wide range of data acquisition applications. Its precise adjustment capabilities and ±20 % resistor ratio tolerance enable accurate, repeatable control and operation even in noisy environments.

Conclusion

AD5272BRMZ-20-RL7 is a digital potentiometer for data acquisition which is suitable for a wide range of applications. Its precision adjustment, low power consumption and interface flexibility makes it an ideal choice for applications where reliability and accuracy are of primary importance.