Allicdata Part #: | AD5252BRUZ100-ND |
Manufacturer Part#: |
AD5252BRUZ100 |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Analog Devices Inc. |
Short Description: | IC DIG POT DUAL 256 100K 14TSSOP |
More Detail: | Digital Potentiometer 100k Ohm 2 Circuit 256 Taps ... |
DataSheet: | AD5252BRUZ100 Datasheet/PDF |
Quantity: | 115 |
Memory Type: | Non-Volatile |
Base Part Number: | AD5252 |
Supplier Device Package: | 14-TSSOP |
Package / Case: | 14-TSSOP (0.173", 4.40mm Width) |
Operating Temperature: | -40°C ~ 105°C |
Resistance - Wiper (Ohms) (Typ): | 200 |
Temperature Coefficient (Typ): | 650 ppm/°C |
Tolerance: | ±20% |
Features: | Selectable Address |
Voltage - Supply: | 2.7 V ~ 5.5 V, ±2.25 V ~ 2.75 V |
Series: | -- |
Interface: | I²C |
Resistance (Ohms): | 100k |
Number of Taps: | 256 |
Number of Circuits: | 2 |
Configuration: | Potentiometer |
Taper: | Linear |
Part Status: | Active |
Packaging: | Tube |
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Data Acquisition - Digital Potentiometers is a family of integrated circuits that modify the resistance between two end terminals by dividing or scaling the total resistance. One of the promising Digital Potentiometer, the AD5252BRUZ100, is a low-power, 8-bit programmable digital potentiometer with a segmented terminal configuration. This chip is designed as a digitally programmable resistor, to control and set the resistance levels in a closed loop control system. It is an ideal choice for power management and signal conditioning applications, such as LED brightness control and adjustable gain circuits.
Application Field of AD5252BRUZ100
The AD5252BRUZ100 is widely used in system level or subsystem design for precise control and measurement of signals within a wide range of devices. It has great utility in applications such as automatic gain control circuits, telecommunications, switching power supplies, portable equipment, instrumentation and control systems, display backlight illumination, etc. AD5252BRUZ100 also serves as an ideal buffering device that eliminates the need to buy a separate buffer when transducer signals must be isolated or buffered.
Working Principle of AD5252BRUZ100
The operating principle of the AD5252BRUZ100 is based on the ratio control method. In this method, the total resistance (RT) is divided into a ratio (R) of the total resistance, while the other part is variable resistance (RV). By applying an external control voltage (Vcontrol) to one of the terminals, the variable resistance (RV) can be varied, thus resulting in a change in the total resistance.
In order to achieve the required resistance value, the control voltage (Vcontrol) for the resistor terminal must be in the range of 0V-2.5V. The (RV) resistance is then varied according to the following formula:
RV = RT*Vcontrol/2.5V
However, for fully controlled operation, the control voltage needs to be railed and should always be constant. This is managed by the IC, which provides a regulated supply voltage that prevents overshoots, thermal runaway, and supply glitches.
The AD5252BRUZ100 IC also features a high-precision voltage reference, which provides a constant voltage reference across different temperature and supply voltage values, ensuring extremely stable readings. Furthermore, it is also equipped with a sense pin, which allows the IC to monitor the resistance changes at all times, helping to maintain the tight tolerance of 0.5%. The AD5252BRUZ100 also includes a power-down feature, which reduces the current consumption to less than 100 nA at all times.
Conclusion
In conclusion, the AD5252BRUZ100 is an ideal digital potentiometer for applications requiring complex resistance scaling and precise control. It is designed to provide precise and reliable control for applications such as automatic gain control, power supplies, instrumentation, and display backlight illumination, among others. It features a voltage reference module and a sense pin, which allow the IC to monitor the resistance changes at all times and maintain a tight tolerance of 0.5%.
The specific data is subject to PDF, and the above content is for reference
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