Overview
The AD5201BRMZ10-REEL7, produced by Analog Devices Inc., is a 33-position digital potentiometer. This device is part of the AD5201 series, which offers programmable resistor functionality through a 3-wire SPI-compatible serial interface. It is designed to replace mechanical potentiometers and provide precise digital control over resistance values. The AD5201 is available in a compact 10-lead MSOP package, making it ideal for applications where space is limited.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| End-to-End Terminal Resistance | RAB | - | - | 10 kΩ, 50 kΩ | - | Ω |
| Number of Positions | - | - | - | 33 | - | - |
| Resistor Differential Nonlinearity (R-DNL) | R-DNL | RWB, VA = No Connect | -0.5 | ± 0.05 | +0.5 | LSB |
| Resistor Integral Nonlinearity (R-INL) | R-INL | RWB, VA = No Connect | -1 | ± 0.1 | +1 | LSB |
| Nominal Resistor Tolerance | ∆RAB | TA = 25°C | -30 | - | +30 | % |
| Resistance Temperature Coefficient | RAB/∆T | VAB = VDD, Wiper = No Connect | - | - | 500 | ppm/°C |
| Wiper Resistance | RW | VDD = 5 V | 50 | - | 100 | Ω |
| Logic Supply Voltage | VLOGIC | - | 2.7 | - | 5.5 | V |
| Single-Supply Range | VDD RANGE | VSS = 0 V | -0.3 | - | 5.5 | V |
| Dual-Supply Range | VDD/SS RANGE | - | ±2.3 | - | ±2.7 | V |
| Positive Supply Current | IDD | VIH = +5 V or VIL = 0 V | 15 | - | 40 | µA |
| Power Dissipation | PDISS | VIH = +5 V or VIL = 0 V, VDD = +5 V, VSS = –5 V | - | - | 0.2 | mW |
| Operating Temperature Range | TA | - | -40 | - | +85 | °C |
Key Features
- Programmable Resistance: The AD5201 offers 33 programmable positions, allowing for precise control over resistance values between the A terminal and the wiper, or the B terminal and the wiper.
- 3-Wire SPI Interface: The device uses a 3-wire SPI-compatible serial interface for data input, making it easy to integrate into digital systems.
- Compact Package: Available in a 10-lead MSOP package, which is ideal for space-constrained applications.
- Power Shutdown: The SHDN pin allows the device to enter a low-power shutdown state, reducing power consumption to microwatts.
- Temperature Stability: The device has a nominal temperature coefficient of 500 ppm/°C, ensuring stable performance over a wide temperature range.
- Low Wiper Resistance: The wiper resistance is fixed at 50 Ω, regardless of the nominal resistance setting.
Applications
- Mechanical Potentiometer Replacement: Ideal for replacing mechanical potentiometers in various applications.
- Instrumentation: Used for gain and offset adjustments in instrumentation systems.
- Programmable Voltage-to-Current Conversion: Can be used in voltage-to-current conversion circuits where programmability is required.
- Programmable Filters, Delays, Time Constants: Suitable for applications requiring programmable filter characteristics, delays, or time constants.
- Line Impedance Matching: Used in impedance matching applications where precise control over resistance is necessary.
Q & A
- What is the AD5201BRMZ10-REEL7 used for?
The AD5201BRMZ10-REEL7 is a 33-position digital potentiometer used to replace mechanical potentiometers and provide precise digital control over resistance values.
- What is the package type of the AD5201BRMZ10-REEL7?
The device is available in a 10-lead MSOP package.
- How is the AD5201BRMZ10-REEL7 programmed?
The device is programmed through a 3-wire SPI-compatible serial interface using a 6-bit serial data word.
- What is the operating temperature range of the AD5201BRMZ10-REEL7?
The device operates over an extended industrial temperature range of –40°C to +85°C.
- How does the power shutdown feature work?
The SHDN pin forces the resistor to an end-to-end open-circuit condition and shorts the wiper to the B terminal, achieving a microwatt power shutdown state.
- What is the nominal temperature coefficient of the AD5201BRMZ10-REEL7?
The device has a nominal temperature coefficient of 500 ppm/°C.
- What is the wiper resistance of the AD5201BRMZ10-REEL7?
The wiper resistance is fixed at 50 Ω.
- Can the AD5201BRMZ10-REEL7 be used in dual-supply configurations?
Yes, the device supports dual-supply operation with a range of ±2.3 V to ±2.7 V.
- What are some common applications of the AD5201BRMZ10-REEL7?
Common applications include mechanical potentiometer replacement, instrumentation, programmable voltage-to-current conversion, programmable filters, delays, and time constants, and line impedance matching.
- How does the device maintain its programmed resistance during shutdown?
The VR latch contents are maintained during shutdown, and the stored VR setting is applied to the RDAC when the device is returned from shutdown.
