Part A
AD5206BRZ50
ADI公司
- Lifecycle
- Active
- Stock
- 4036 件
- Package
- SOIC-24
- Series
- 資料獲取-數位電位器
Replacement verdict
Not a drop-in replacement
The AD5206BRZ50 and AD5203AR100 differ fundamentally in channel count, resistance value, and digital interface architecture, making them non-interchangeable in existing designs without significant circuit redesign and firmware modification.
Different channel count
Different resistance value
Different interface type
Different package footprint
Parts at a glance
Part B
AD5203AR100
ADI公司
- Lifecycle
- Active
- Stock
- 2054 件
- Package
- SOIC-24
- Series
- 資料獲取-數位電位器
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5206BRZ50 | AD5203AR100 | Why it matters |
|---|---|---|---|
| Number of Potentiometers | 6 | 4 | Determines how many independent digitally controlled resistance channels are available in a single package. |
| End-to-End Resistance | 50 kΩ | 100 kΩ | Sets the nominal resistance range, directly affecting the voltage divider ratios and current levels in the application circuit. |
| Resolution | 8-bit (256 positions) | 6-bit (64 positions) | Higher resolution provides finer adjustment steps for the wiper position, improving precision of the set resistance. |
| Interface Type | SPI (3-wire serial) | SPI (3-wire serial) | Defines the digital communication protocol required to program the device from a host controller. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Specifies the allowable power supply window for correct operation and logic-level compatibility. |
| Wiper Resistance | 50 Ω typical | 60 Ω typical | Adds a fixed series resistance at the wiper terminal, affecting accuracy especially at low programmed resistance settings. |
| Package Type | 24-lead SOIC | 14-lead SOIC | Determines the PCB footprint, board space, and thermal characteristics of the design. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Defines the ambient temperature limits within which the device is guaranteed to meet its specifications. |
| Nonvolatile Memory | No | No | Indicates whether the wiper setting is retained after power cycling without reprogramming. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5206BRZ50 | AD5203AR100 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Circuits | 6 | 4 |
| Number of Taps | 256 | 64 |
| Resistance(Ohms) | 50k | 100k |
| Memory Type | Volatile | Volatile |
| Voltage - Supply | 2.7V ~ 5.5V, ±2.3V ~ 2.7V | 2.7V ~ 5.5V |
| Temperature Coefficient(Typ) | 700ppm/°C | 700ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Taper | Linear | - |
| Configuration | Potentiometer | - |
| Interface | SPI | - |
| Features | Selectable Address | - |
| Tolerance | ±30% | - |
Frequently asked questions
What are the key differences between the AD5206BRZ50 and AD5203AR100 digital potentiometers?
The AD5206BRZ50 is a 6-channel, 8-bit digital potentiometer with a 50 kΩ end-to-end resistance, while the AD5203AR100 is a 4-channel, 6-bit digital potentiometer with a 100 kΩ end-to-end resistance. The AD5206 offers more channels and higher resolution, whereas the AD5203 provides a higher resistance value per channel.
How many channels and what resolution does each device provide?
The AD5206BRZ50 provides 6 independent channels with 8-bit resolution (256 positions per channel). The AD5203AR100 provides 4 independent channels with 6-bit resolution (64 positions per channel).
What are the end-to-end resistance values and tolerances for these digital potentiometers?
The AD5206BRZ50 has a nominal end-to-end resistance of 50 kΩ. The AD5203AR100 has a nominal end-to-end resistance of 100 kΩ. Both devices typically specify a resistance tolerance of ±30% per the manufacturer datasheets.
What digital interface do the AD5206BRZ50 and AD5203AR100 use?
Both devices use a 3-wire SPI-compatible serial interface for programming the wiper positions. They support daisy-chain operation and have separate serial data input and output pins.
What are the operating voltage ranges for the AD5206BRZ50 and AD5203AR100?
The AD5206BRZ50 operates from a single supply of 2.7 V to 5.5 V or dual supplies of ±2.7 V. The AD5203AR100 operates from a single supply of 2.7 V to 5.5 V or dual supplies of ±2.7 V. Both are specified for operation over the extended industrial temperature range of −40°C to +85°C.
What package types are available for the AD5206BRZ50 and AD5203AR100?
The AD5206BRZ50 is offered in a 24-lead SOIC (R-24) package. The AD5203AR100 is offered in a 14-lead SOIC (R-14) package. The "BRZ" and "AR" suffixes in the part numbers indicate the package and temperature grade per Analog Devices nomenclature.
Can the AD5206BRZ50 and AD5203AR100 be used as drop-in replacements for each other?
No. They differ in channel count (6 vs 4), resolution (8-bit vs 6-bit), end-to-end resistance (50 kΩ vs 100 kΩ), and package pin count (24-lead vs 14-lead). A direct drop-in replacement is not possible without redesigning the circuit and PCB layout.
What are typical applications for the AD5206BRZ50 and AD5203AR100?
Both devices are used for programmable gain and offset adjustment, volume control, and adjustable power supply references. The AD5206BRZ50 is preferred where more channels and finer resolution are needed, while the AD5203AR100 suits applications requiring fewer channels and higher resistance values.