Overview
The AD5200BRM50 is a digital potentiometer produced by Analog Devices Inc. This component is part of the AD5200 series, which includes 256-position digitally controlled variable resistors. The AD5200BRM50 is specifically configured with a 50 kΩ nominal resistance between the A and B terminals. It is designed to provide precise and programmable resistance values, making it suitable for a wide range of applications requiring adjustable resistance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Nominal Resistance (RAB) | 50 kΩ | kΩ |
| Number of Positions | 256 | - |
| Temperature Coefficient | 500 ppm/°C | ppm/°C |
| Logic Supply Voltage (VLOGIC) | 2.7 to 5.5 | V |
| Power Single-Supply Range (VDD) | 0 to 5.5 | V |
| Power Dual-Supply Range (VDD/VSS) | ±2.3 to ±2.7 | V |
| Positive Supply Current (IDD) | 15 to 40 | µA |
| Negative Supply Current (ISS) | 15 to 40 | µA |
| Power Dissipation (PDISS) | 0.2 | mW |
| Bandwidth (-3 dB) at 10 kΩ | 600 kHz | kHz |
| Bandwidth (-3 dB) at 50 kΩ | 100 kHz | kHz |
Key Features
- Digital Control: The AD5200BRM50 is controlled via a 3-wire SPI-compatible serial interface, allowing for precise digital control over the resistance value.
- Programmable Resistance: Offers 256 programmable positions, enabling fine-tuned adjustments of resistance.
- Power Shutdown: Features a shutdown pin (SHDN) that places the device in a low-power state, significantly reducing power consumption.
- Internal Preset: The device is preset to the midscale position during power-on, ensuring consistent initial conditions.
- Low Wiper Resistance: The wiper contact resistance is 50 Ω, ensuring minimal additional resistance in the circuit.
Applications
- Audio and Video Equipment: Used in volume control, tone control, and other audio/video applications requiring adjustable resistance.
- Industrial Control Systems: Suitable for applications needing precise and programmable resistance, such as sensor calibration and signal conditioning.
- Medical Devices: Can be used in medical equipment for adjustable gain control, impedance matching, and other applications requiring variable resistance.
- Automotive Systems: Used in automotive electronics for various control functions, including sensor calibration and signal processing.
Q & A
- What is the nominal resistance of the AD5200BRM50?
The nominal resistance of the AD5200BRM50 is 50 kΩ.
- How many programmable positions does the AD5200BRM50 have?
The AD5200BRM50 has 256 programmable positions.
- What is the temperature coefficient of the AD5200BRM50?
The temperature coefficient is 500 ppm/°C.
- What is the logic supply voltage range for the AD5200BRM50?
The logic supply voltage range is 2.7 to 5.5 V.
- How does the power shutdown feature work?
The power shutdown feature places the device in a low-power state by opening the switches next to Terminals A and B and connecting the wiper to Terminal B, significantly reducing power consumption.
- What is the wiper contact resistance of the AD5200BRM50?
The wiper contact resistance is 50 Ω.
- How is the device controlled?
The device is controlled via a 3-wire SPI-compatible serial interface.
- What is the internal preset condition of the AD5200BRM50 during power-on?
The device is preset to the midscale position during power-on.
- What are some common applications of the AD5200BRM50?
Common applications include audio and video equipment, industrial control systems, medical devices, and automotive systems.
- What is the bandwidth of the AD5200BRM50 at 50 kΩ?
The bandwidth at 50 kΩ is 100 kHz.
