DS1267-010

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Data acquisition digitally controls the resistance of a potentiometer by means of a digital code. The DS1267-010 digital potentiometer is a CMOS device that fits this application. It is a single-channel, 10-tap, 8-bit device which is programmable over a full range of resistance values.

The DS1267-010 has three resistors and five pins. The three resistors are connected between two adjustable terminals, A and W, and one fixed terminal, Vcc. The adjustable terminals are connected together by the tap selector (TS), allowing resistance to be set from 0 to RMAX. The fifth pin is the W terminal access pin, which is also the slave address pin.

The working principle of the DS1267-010 is based on the principle of a digitally controlled electronic switch. The control bits, C0-C7, are fed into the digital input port, which is then used to control the state of the switch. The state of the switch determines the resistance that is applied between the two adjustable terminals and the Vcc terminal. Depending on the control bit values, the resistance value can vary in steps from 0 to RMAX.

The DS1267-010 provides a high level of accuracy and reliability. With a resolution of 8 bits, it provides a resolution of 1 in 256 over its full range of RMAX. Additionally, it has an accuracy of 2% with a maximum of 0.5% per bit of resolution. The DS1267-010 is also very reliable, with a typical call out rate of less than 1 ppm.

The DS1267-010 is ideal for applications requiring high accuracy, such as in medical, communication and test and measurement equipment. It can be used for resistance calibration and gain accuracy calibration in high accuracy RF receiver systems and for adjustable voltage references, or for voltage dividers with equal ratios or logarithmic profiles. In addition, the DS1267-010 can also be used in digital potentiometer and voltage divider arrays, and in switching matrix applications.

The DS1267-010 is an ideal solution for applications requiring digital control of resistance. It provides high resolution, high accuracy and reliability, and can be used in a variety of applications. As such, it is a popular choice for digital potentiometer and voltage divider needs.

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