Overview
The AD5247BKSZ100-1RL7, produced by Analog Devices Inc., is a 128-position I2C-compatible digital potentiometer. This device serves as a compact, electronic alternative to mechanical potentiometers or variable resistors. It is packaged in a 6-lead SC70 package, measuring 2 mm × 2.1 mm, making it ideal for space-constrained applications. The AD5247 operates on a single supply voltage ranging from 2.7 V to 5.5 V, which is suitable for battery-powered and various other applications requiring low power consumption and high accuracy.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Power Supply Range | VDD | 2.7 | 5.5 | V | ||
| Supply Current | IDD | VDD = 3.3 V | 0.9 | 2 | µA | |
| Operating Temperature Range | TA | -40 | 125 | °C | ||
| End-to-End Resistance | RAB | 100 | 100 | kΩ | ||
| Resistor Differential Nonlinearity | R-DNL | VA = no connect | -1 | ±0.1 | +1 | LSB |
| Input Logic High | VIH | VDD = 5 V | 2.4 | V | ||
| Input Logic Low | VIL | VDD = 5 V | 0.8 | V | ||
| Bandwidth –3 dB | BW | RAB = 100 kΩ, code = 0x40 | 40 | kHz |
Key Features
- Compact Packaging: 6-lead SC70 package, measuring 2 mm × 2.1 mm.
- Single-Supply Operation: Operates from 2.7 V to 5.5 V, suitable for battery-powered applications.
- Low Power Consumption: Typical supply current of 0.9 µA at 3.3 V.
- High Accuracy and Stability: Low temperature coefficient of 45 ppm/°C.
- I2C-Compatible Interface: Allows for digital control and readback of the wiper register.
- Multiple Resistance Options: Available in 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ end-to-end resistance values.
- Wide Operating Temperature Range: From -40°C to +125°C.
Applications
- Mechanical Potentiometer Replacement: In new designs where electronic adjustment is preferred.
- Transducer Adjustment: For pressure, temperature, position, chemical, and optical sensors.
- RF Amplifier-Biasing: For adjusting the bias of RF amplifiers.
- LCD Brightness and Contrast Adjustment: For display settings in various devices.
- Automotive Electronics Adjustment: For various automotive applications requiring precise adjustments.
- Gain Control and Offset Adjustment: In analog circuits where precise gain and offset adjustments are necessary.
Q & A
- What is the AD5247BKSZ100-1RL7 used for?
The AD5247BKSZ100-1RL7 is used as a digital potentiometer, replacing mechanical potentiometers or variable resistors in various applications.
- What is the operating voltage range of the AD5247BKSZ100-1RL7?
The device operates from 2.7 V to 5.5 V.
- What is the typical supply current of the AD5247BKSZ100-1RL7 at 3.3 V?
The typical supply current is 0.9 µA at 3.3 V.
- What are the available end-to-end resistance values for the AD5247?
The available resistance values are 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the temperature coefficient of the AD5247BKSZ100-1RL7?
The temperature coefficient is 45 ppm/°C.
- What interface does the AD5247BKSZ100-1RL7 use for control and readback?
The device uses an I2C-compatible interface.
- What is the operating temperature range of the AD5247BKSZ100-1RL7?
The operating temperature range is from -40°C to +125°C.
- Can multiple AD5247 devices be connected on the same I2C bus?
- What are some common applications of the AD5247BKSZ100-1RL7?
- What is the bandwidth of the AD5247BKSZ100-1RL7?
