Part A
AD5263BRUZ20
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4338 PCS
- Package
- TSSOP-24
- Series
- Data Acquisition - Digital Potentiometers
Replacement verdict
Not a drop-in replacement
The AD5263BRUZ20 and AD5262BRU200 are not drop-in replacements for each other. Although both are quad-channel digital potentiometers from Analog Devices, they differ fundamentally in resistance value, interface type, and package configuration, requiring circuit redesign and firmware changes before substitution can be considered.
Different end-to-end resistance
Different digital interface
Different package type
Different channel configuration
Parts at a glance
Part B
AD5262BRU200
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2946 PCS
- Package
- TSSOP-16
- 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 | AD5262BRU200 | Why it matters |
|---|---|---|---|
| Number of Channels | 4 | 2 | Determines how many independent potentiometer channels are available in a single package, directly affecting circuit density and channel count requirements. |
| End-to-End Resistance | 20 kΩ | 200 kΩ | Sets the nominal resistance range, which must match the impedance requirements of the surrounding signal chain for proper biasing and loading. |
| Interface Type | SPI-compatible serial interface | I2C-compatible serial interface | The digital control bus must be compatible with the host controller; SPI and I2C are not interchangeable without protocol changes. |
| Package / Pin Count | 24-lead TSSOP | 16-lead TSSOP | Footprint and pin count affect PCB layout, routing, and whether the parts are drop-in compatible on an existing board. |
| Supply Voltage Range | ±4.5 V to ±16.5 V (dual) or 4.5 V to 16.5 V (single) | 2.7 V to 5.5 V (single) or ±2.7 V (dual) | Operating voltage must match the system rails; a mismatch can prevent operation or damage the device. |
| Wiper Current | ±1 mA (typical rating) | ±1 mA (typical rating) | Limits the current the wiper can source or sink, constraining the load the potentiometer can drive. |
| Nonvolatile Memory | No | No | Determines whether the wiper setting is retained after power loss, which is critical for applications requiring a known startup state. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Defines the environmental conditions under which the device is guaranteed to meet specifications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5263BRUZ20 | AD5262BRU200 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 4 | 2 |
| Number of Taps | 256 | 256 |
| Resistance(Ohms) | 20k | 200k |
| Interface | I²C, SPI | SPI |
| Memory Type | Volatile | Volatile |
| Voltage - Supply | 4.5V ~ 16.5V, ±4.5V ~ 7.5V | 4.5V ~ 16.5V, ±5V |
| Features | Cascade Pin, Selectable Address | Cascade Pin |
| Tolerance | ±30% | ±30% |
| Temperature Coefficient(Typ) | 30ppm/°C | 35ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD5263BRUZ20 and AD5262BRU200?
The AD5263BRUZ20 is a quad-channel, 20 kΩ digital potentiometer with a 256-position resolution, while the AD5262BRU200 is a dual-channel, 200 kΩ digital potentiometer with 256 positions. The AD5263 offers four independent channels in a TSSOP-20 package, whereas the AD5262 provides two channels in a TSSOP-16 package. Both use a 3-wire SPI-compatible interface and operate from a single 2.7 V to 5.5 V supply or dual ±2.5 V supplies.
Are the AD5263BRUZ20 and AD5262BRU200 pin-compatible?
No. The AD5263BRUZ20 is housed in a 20-lead TSSOP, and the AD5262BRU200 is housed in a 16-lead TSSOP. They have different pin counts and pin assignments, so they are not drop-in replacements for each other.
Can the AD5263BRUZ20 and AD5262BRU200 be used in the same circuit design without modification?
No. Because they differ in channel count, end-to-end resistance, and package footprint, the PCB layout, external component selection, and control firmware must be adapted. The AD5263BRUZ20 provides four 20 kΩ channels, while the AD5262BRU200 provides two 200 kΩ channels, so the circuit topology and signal levels will differ.
What is the end-to-end resistance tolerance of the AD5263BRUZ20 and AD5262BRU200?
Both devices are available with a ±30% end-to-end resistance tolerance (B grade). The AD5263BRUZ20 has a nominal 20 kΩ resistance, and the AD5262BRU200 has a nominal 200 kΩ resistance. For precise ratiometric applications, the actual resistance should be measured or the devices should be used in divider mode where the ratio is more stable than the absolute end-to-end resistance.
Do the AD5263BRUZ20 and AD5262BRU200 support both single-supply and dual-supply operation?
Yes. Both devices operate from a single 2.7 V to 5.5 V supply or from dual supplies of ±2.5 V. This flexibility allows use in both unipolar and bipolar signal conditioning circuits. The digital interface remains compatible with 3 V and 5 V logic regardless of the analog supply configuration.
What is the resolution and interface type of the AD5263BRUZ20 and AD5262BRU200?
Both are 256-position (8-bit) digital potentiometers with a 3-wire SPI-compatible serial interface. The AD5263BRUZ20 provides four independently programmable channels, and the AD5262BRU200 provides two independently programmable channels. Both support daisy-chain operation and have a nonvolatile memory option in some variants, but the BRUZ and BRU200 grades are volatile.
Which applications are better suited for the AD5263BRUZ20 versus the AD5262BRU200?
The AD5263BRUZ20 is better for designs requiring four independent 20 kΩ channels in a compact footprint, such as multi-channel gain control or offset trimming. The AD5262BRU200 is better for designs needing two higher-resistance 200 kΩ channels, such as high-impedance sensor biasing or low-current level setting. The choice depends on channel count, resistance value, and PCB area constraints.