Overview
The AD5207BRUZ100-R7, produced by Analog Devices Inc., is a dual-channel, 256-position digital potentiometer. This device performs the same electronic adjustment function as a traditional potentiometer but offers the advantage of digital control. Each channel contains a fixed resistor with a wiper contact that can be set to various positions based on a digital code, allowing for a completely programmable resistance value between the A terminal and the wiper or the B terminal and the wiper. The device is available in a 1.1 mm thin TSSOP-14 package, making it suitable for applications requiring compact design, such as PCMCIA applications. It operates over an extended industrial temperature range of -40°C to +125°C.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| End-to-End Terminal Resistance | 10 kΩ, 50 kΩ, 100 kΩ | ±1% channel-to-channel matching tolerance |
| Number of Positions | 256 | |
| Supply Voltage | +2.7 V to +5.5 V (single supply), ±3 V (dual supply) | |
| Operating Temperature Range | -40°C to +125°C | |
| Package Type | 14-Lead TSSOP | 1.1 mm thin |
| Digital Interface | 3-Wire SPI Compatible | |
| Temperature Coefficient | 500 ppm/°C | Nominal |
Key Features
- Dual-channel, 256-position digital potentiometer, allowing for precise control over resistance values.
- Programmable resistance between the A terminal and the wiper or the B terminal and the wiper.
- Internal reset block forces the wiper to the midscale position during power-up.
- Power shutdown (SHDN) pin allows for low power consumption by open-circuiting the A terminals and shorting the wiper to the B terminals.
- 3-Wire SPI compatible serial data input and output interface, enabling daisy chaining of multiple devices.
- High glitch minimization through a unique switching circuit, avoiding make-before-break or break-before-make operations.
Applications
- Mechanical potentiometer replacement in various designs.
- Stereo channel audio level control.
- Instrumentation: gain and offset adjustment.
- Programmable voltage-to-current conversion.
- Programmable filters, delays, and time constants.
- Line impedance matching.
- Automotive electronics adjustment.
Q & A
- What is the AD5207BRUZ100-R7 used for?
The AD5207BRUZ100-R7 is used as a dual-channel digital potentiometer, replacing traditional mechanical potentiometers in various applications such as audio level control, instrumentation, and automotive electronics.
- What are the available end-to-end terminal resistances for the AD5207?
The AD5207 is available with end-to-end terminal resistances of 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the operating temperature range of the AD5207?
The AD5207 operates over an extended industrial temperature range of -40°C to +125°C.
- How does the power shutdown feature work on the AD5207?
The power shutdown (SHDN) pin forces an open circuit on the A terminals and shorts the wiper to the B terminals, minimizing power consumption.
- What type of digital interface does the AD5207 use?
The AD5207 uses a 3-Wire SPI compatible serial data input and output interface.
- Can the AD5207 be daisy-chained with other devices?
- What is the package type of the AD5207?
The AD5207 is available in a 14-Lead TSSOP package, which is 1.1 mm thin.
- How many positions does the AD5207 have?
The AD5207 has 256 positions for each channel.
- What is the nominal temperature coefficient of the AD5207?
The nominal temperature coefficient of the AD5207 is 500 ppm/°C.
- Does the AD5207 have any internal reset feature?
