Part A
AD5263BRUZ20
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4338 PCS
- Package
- TSSOP-24
- Series
- Data Acquisition - Digital Potentiometers
Replacement verdict
Compatible functional replacement candidate
The AD5263BRUZ20 and AD5263BRU200 are functionally compatible digital potentiometers from the same AD5263 family, sharing identical architecture, interface, and package type. The primary distinction is the end-to-end resistance value, which directly affects circuit behavior and must be validated against the target application requirements before substitution.
End-to-End Resistance
Validation required
Package Type
High match
Interface Type
High match
Channel Count
High match
Parts at a glance
Part B
AD5263BRU200
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2049 PCS
- Package
- TSSOP-24
- Series
- Data Acquisition - Digital Potentiometers
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5263BRUZ20 | AD5263BRU200 | Why it matters |
|---|---|---|---|
| End-to-End Resistance | 20 kΩ | 200 kΩ | Determines the nominal resistance range of the digital potentiometer; a different value changes the voltage/current scaling in the target circuit and prevents direct drop-in substitution without redesign. |
| Number of Positions | 256 | 256 | Defines the wiper resolution; identical resolution means the same number of programmable steps and comparable adjustment granularity. |
| Number of Channels | 4 | 4 | Specifies how many independent potentiometer channels are available; matching channel count is required for equivalent multi-channel circuit functionality. |
| Interface Type | I2C | I2C | Determines the digital communication protocol used to program the device; identical interface ensures compatibility with the same host controller and firmware. |
| Supply Voltage Range | 4.5 V to 16.5 V (dual ±2.25 V to ±8.25 V) | 4.5 V to 16.5 V (dual ±2.25 V to ±8.25 V) | Defines the allowable operating supply; matching ranges allow the same power rails to be used without circuit modification. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Indicates the environmental range over which specifications are guaranteed; identical ratings ensure the same application environments are supported. |
| Package / Mounting Type | 20-TSSOP, Surface Mount | 20-TSSOP, Surface Mount | Determines PCB footprint and assembly compatibility; identical package and mounting allow the same board layout to be reused. |
| Wiper Resistance (Typical) | 60 Ω | 60 Ω | Represents the on-resistance of the internal wiper switch; it affects accuracy and loading, and must be considered when matching circuit performance. |
| Resistance Tolerance | ±30 % | ±30 % | Specifies the allowable deviation of end-to-end resistance; matching tolerance ensures predictable calibration and circuit behavior. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5263BRUZ20 | AD5263BRU200 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 4 | 4 |
| Number of Taps | 256 | 256 |
| Resistance(Ohms) | 20k | 200k |
| Interface | I²C, SPI | I²C, SPI |
| Memory Type | Volatile | Volatile |
| Voltage - Supply | 4.5V ~ 16.5V, ±4.5V ~ 7.5V | 4.5V ~ 16.5V, ±4.5V ~ 7.5V |
| Features | Cascade Pin, Selectable Address | Cascade Pin, Selectable Address |
| Tolerance | ±30% | ±30% |
| Temperature Coefficient(Typ) | 30ppm/°C | 30ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
Frequently asked questions
What is the main difference between the AD5263BRUZ20 and the AD5263BRU200?
The primary difference is the end-to-end resistance value. The AD5263BRUZ20 has a 20 kΩ nominal resistance, while the AD5263BRU200 has a 200 kΩ nominal resistance. Both are quad-channel, 256-position digital potentiometers from Analog Devices in a 14-lead TSSOP package.
Are the AD5263BRUZ20 and AD5263BRU200 pin-compatible?
Yes. Both devices are offered in the same 14-lead TSSOP (RU-14) package and share the same pinout, so they are pin-compatible. The difference is the internal resistor array value, not the package or pin functions.
Can the AD5263BRUZ20 and AD5263BRU200 be used interchangeably in an existing design?
Not without validation. Although they are pin-compatible, the 10:1 resistance ratio difference changes the wiper resistance, bandwidth, and end-to-end resistance, which can affect circuit gain, offset, and timing. The designer must verify that the new resistance value meets the application requirements.
What is the resolution and number of positions for both devices?
Both the AD5263BRUZ20 and AD5263BRU200 are 256-position digital potentiometers, providing 8-bit resolution. Each device contains four independent potentiometer channels.
What supply voltage range do the AD5263BRUZ20 and AD5263BRU200 support?
Both devices operate from a single supply of 4.5 V to 16.5 V, or from dual supplies of ±2.25 V to ±8.25 V. The digital interface logic operates from a separate VLOGIC supply that can be as low as 2.7 V.
How does the end-to-end resistance affect the bandwidth of these digital potentiometers?
Higher end-to-end resistance generally reduces the -3 dB bandwidth because the RC time constant with parasitic capacitance increases. The AD5263BRUZ20 (20 kΩ) typically provides wider bandwidth than the AD5263BRU200 (200 kΩ) in the same circuit configuration.
What is the wiper resistance for the AD5263BRUZ20 and AD5263BRU200?
Both devices specify a typical wiper resistance of 60 Ω and a maximum of 100 Ω. The wiper resistance is independent of the end-to-end resistance value and is a function of the internal switch architecture.
Do both devices support SPI and I2C interfaces?
No. The AD5263 family uses a 3-wire SPI-compatible serial interface. Neither the AD5263BRUZ20 nor the AD5263BRU200 supports I2C. The interface includes SDI, SDO, CLK, and CS pins for daisy-chaining and readback capability.
What are the operating temperature ranges for the AD5263BRUZ20 and AD5263BRU200?
Both devices are specified for the industrial temperature range of -40°C to +85°C. The RUZ suffix indicates a Pb-free, RoHS-compliant 14-lead TSSOP package.