Overview
The AD5207BRU10-REEL7, manufactured by Analog Devices Inc., is a 2-channel, 256-position digital potentiometer. This device performs the same electronic adjustment function as a mechanical potentiometer or variable resistor. Each channel contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the SPI-compatible serial-input register. The AD5207 is available in a 1.1 mm thin TSSOP-14 package, making it suitable for PCMCIA applications and ensuring operation over an extended industrial temperature range of -40°C to +125°C.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Number of Channels | 2 | |
| Number of Positions | 256 | |
| Resistance Values | 10 kΩ, 50 kΩ, 100 kΩ | Determined by part number suffix |
| Channel-to-Channel Matching Tolerance | ±1% | |
| Temperature Coefficient | 500 ppm/°C | Nominal |
| Power Supply Range | 2.7 V to 5.5 V (Single Supply), ±2.7 V (Dual Supply) | |
| Operating Temperature Range | -40°C to +125°C | |
| Package Type | TSSOP-14 | 1.1 mm thin |
| Shutdown Current | < 5 µA | Logic low on SHDN pin |
| Digital Interface | 3-Wire SPI Compatible | Serial Data Input (SDI), Chip Select (CS), Serial Clock (CLK) |
Key Features
- Dual Channel Operation: Each channel operates independently with 256-position digital control.
- Programmable Resistance: The resistance between the wiper and either end point of the fixed resistor varies linearly with respect to the digital code.
- Power Shutdown: The SHDN pin forces an open circuit on the A Terminal and shorts the wiper to the B Terminal, achieving a microwatt power shutdown state.
- Digital Interface: Standard three-wire serial input control interface compatible with SPI, including SDI, CS, and CLK pins.
- Low Power Consumption: Minimal leakage current and negligible power dissipation during shutdown mode.
- Industrial Temperature Range: Guaranteed operation over -40°C to +125°C.
Applications
- Mechanical Potentiometer Replacement: Ideal for replacing mechanical potentiometers in various applications.
- Stereo Channel Audio Level Control: Suitable for audio level adjustment in stereo channels.
- Instrumentation: Used for gain and offset adjustments in instrumentation systems.
- Programmable Voltage to Current Conversion: Can be used in voltage to current conversion circuits.
- Programmable Filters, Delays, Time Constants: Utilized in filter, delay, and time constant circuits.
- Line Impedance Matching: Helps in matching line impedances in various electronic systems.
- Automotive Electronics Adjustment: Used in automotive electronics for various adjustment needs.
Q & A
- What is the AD5207BRU10-REEL7 used for?
The AD5207BRU10-REEL7 is a digital potentiometer used to replace mechanical potentiometers and variable resistors in various electronic applications.
- How many channels does the AD5207BRU10-REEL7 have?
The AD5207BRU10-REEL7 has two independent channels.
- What are the available resistance values for the AD5207BRU10-REEL7?
The available resistance values are 10 kΩ, 50 kΩ, and 100 kΩ, determined by the part number suffix.
- What is the operating temperature range of the AD5207BRU10-REEL7?
The operating temperature range is -40°C to +125°C.
- How does the power shutdown feature work on the AD5207BRU10-REEL7?
The SHDN pin forces an open circuit on the A Terminal and shorts the wiper to the B Terminal, achieving a microwatt power shutdown state.
- What type of digital interface does the AD5207BRU10-REEL7 use?
The AD5207BRU10-REEL7 uses a 3-wire SPI-compatible serial input control interface.
- Can the AD5207BRU10-REEL7 update both channels simultaneously?
No, the AD5207BRU10-REEL7 cannot update both channels simultaneously; two separate 10-bit data words must be clocked in to change both VR settings.
- What is the package type of the AD5207BRU10-REEL7?
The package type is TSSOP-14, which is 1.1 mm thin.
- How does the AD5207BRU10-REEL7 handle ESD protection?
All digital inputs are protected with a series input resistor and parallel Zener ESD structure.
- What are some common applications of the AD5207BRU10-REEL7?
Common applications include mechanical potentiometer replacement, stereo channel audio level control, instrumentation, programmable voltage to current conversion, and automotive electronics adjustment.
