Overview
The AD5247BKSZ10-2RL7, produced by Analog Devices Inc., is a 128-position digital potentiometer that functions as an electronic adjustment device, similar to a mechanical potentiometer or variable resistor. It is available in a compact 6-lead SC70 package and operates on a single supply voltage ranging from 2.7 V to 5.5 V, making it suitable for battery-powered applications and other low-power scenarios. The device features an I2C-compatible digital interface, allowing for precise control and readback of the wiper settings.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Resistor Differential Nonlinearity | R-DNL | RWB, VA = no connect | -1 | ±0.1 | +1 | LSB |
| Resistor Integral Nonlinearity | R-INL | code = 0x00 | 0 | 0.5 | 1 | LSB |
| Voltage Range | VA, VW | GND to VDD | GND | - | VDD | V |
| Capacitance A | CA | f = 1 MHz, measured to GND, code = 0x40 | - | - | 45 | pF |
| Capacitance W | CW | f = 1 MHz, measured to GND, code = 0x40 | - | - | 60 | pF |
| Input Logic High | VIH | VDD = 5 V | - | - | 2.4 | V |
| Input Logic Low | VIL | VDD = 5 V | - | - | 0.8 | V |
| Power Supply Range | VDD | - | 2.7 | - | 5.5 | V |
| Supply Current | IDD | VDD = 5 V; VIH = VDD or VIL = GND | 2.5 | - | 5.2 | µA |
| Bandwidth –3 dB | BW | RAB = 10 kΩ, code = 0x40 | - | - | 600 | kHz |
| Total Harmonic Distortion | THDW | VA = 1 V rms, f = 1 kHz, RAB = 10 kΩ | - | - | 0.05 | % |
Key Features
- 128-position digital potentiometer with I2C-compatible digital interface.
- Available in four different end-to-end resistance values: 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- Single-supply operation from 2.7 V to 5.5 V, suitable for battery-powered applications.
- Low temperature coefficient for high accuracy and stability.
- Compact 6-lead SC70 package.
- Volatile wiper memory.
- Fast mode I2C interface with speeds up to 400 kHz.
Applications
- Mechanical potentiometer replacement in new designs.
- Transducer adjustment of pressure, temperature, position, chemical, and optical sensors.
- RF amplifier-biasing.
- LCD brightness and contrast adjustment.
- Automotive electronics adjustment.
- Gain control and offset adjustment).
Q & A
- What is the primary function of the AD5247BKSZ10-2RL7?
The AD5247BKSZ10-2RL7 functions as a digital potentiometer, providing electronic adjustment similar to a mechanical potentiometer or variable resistor.
- What are the available resistance values for the AD5247?
The AD5247 is available in four different end-to-end resistance values: 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ).
- What is the operating voltage range of the AD5247?
The device operates on a single supply voltage ranging from 2.7 V to 5.5 V).
- What type of digital interface does the AD5247 use?
The AD5247 uses an I2C-compatible digital interface).
- What is the maximum I2C interface speed?
The I2C interface operates in fast mode with speeds up to 400 kHz).
- What is the package type of the AD5247BKSZ10-2RL7?
The device is packaged in a 6-lead SC70 package).
- What are some common applications of the AD5247?
Common applications include mechanical potentiometer replacement, transducer adjustment, RF amplifier-biasing, LCD brightness and contrast adjustment, automotive electronics adjustment, and gain control and offset adjustment).
- Is the wiper memory of the AD5247 volatile or non-volatile?
The wiper memory of the AD5247 is volatile).
- What is the typical supply current of the AD5247 at 5 V?
The typical supply current at 5 V is between 2.5 µA and 5.2 µA).
- What is the bandwidth of the AD5247 for a 10 kΩ resistor?
The bandwidth for a 10 kΩ resistor is 600 kHz).
