Part A
AD5328ARUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5891 PCS
- Package
- TSSOP-16
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5326BRU is a viable functional replacement candidate for the AD5328ARUZ in applications where four DAC channels are sufficient and the board layout can accommodate the different TSSOP package footprint. Both devices share the same 12-bit resolution, 2.5 V to 5.5 V supply range, and SPI-compatible serial interface, ensuring straightforward firmware migration. However, designers must account for the reduced channel count, the narrower operating temperature range, and the package dimension differences before committing to a drop-in substitution.
Channel Count
Validation required
Resolution
High match
Package Type
Validation required
Operating Temperature Range
Validation required
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5328ARUZ | AD5326BRU | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 8 | 4 | Channel count determines how many independent analog outputs are available, directly affecting whether the part can replace the other in a given design. |
| Resolution | 12 bits | 12 bits | Resolution sets the smallest output voltage step and overall accuracy of the DAC transfer function. |
| Interface Type | SPI / DSP / Microwire compatible | I2C compatible | The digital interface must match the host controller; SPI and I2C are not interchangeable without hardware or firmware changes. |
| Package / Mounting | 16-Lead TSSOP | 16-Lead TSSOP | Package and pinout compatibility determine whether the part can be dropped onto an existing PCB footprint. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Supply range must cover the system rail to ensure proper operation and output compliance. |
| Reference Input | External reference | External reference | Reference configuration affects output full-scale range and accuracy, and must match the system reference scheme. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | Temperature range must meet the application environment for reliable operation. |
| Output Type | Voltage output | Voltage output | Output type must match the load and signal chain requirements of the target design. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5328ARUZ | AD5326BRU |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 8 | 4 |
| Settling Time | 10µs | 10µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI, DSP | I²C |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| Voltage - Supply, Digital | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| INL / DNL(LSB) | ±2, ±0.2 | ±2, ±0.2 |
| Architecture | String DAC | String DAC |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 105°C |
Frequently asked questions
What are the key differences between the AD5328ARUZ and the AD5326BRU?
The AD5328ARUZ is an octal 12-bit digital-to-analog converter (DAC) in a 16-lead TSSOP package, while the AD5326BRU is a quad 12-bit DAC in a 16-lead TSSOP package. The AD5328 provides eight DAC channels, whereas the AD5326 provides four. Both are members of the Analog Devices AD53xx family and share a similar serial interface architecture, but they differ in channel count and specified performance grades.
Are the AD5328ARUZ and AD5326BRU pin-compatible?
No. Although both devices are offered in a 16-lead TSSOP package, their pinouts differ because the AD5328 has eight DAC outputs and the AD5326 has four. The pin functions and assignments are not identical, so they cannot be treated as pin-compatible substitutes without verifying the specific pinout in the respective manufacturer datasheets.
What is the resolution of the AD5328ARUZ and AD5326BRU?
Both the AD5328ARUZ and the AD5326BRU are 12-bit DACs. Each provides 12-bit resolution, yielding 4096 discrete output levels over the configured output range.
What supply voltage range do the AD5328ARUZ and AD5326BRU support?
Both devices operate from a single 2.5 V to 5.5 V supply, as specified in the Analog Devices AD5328 and AD5326 datasheets. The output amplifier configuration and reference input determine the actual output voltage span.
What serial interface do the AD5328ARUZ and AD5326BRU use?
Both devices use a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. The interface supports daisy-chain operation and operates at clock rates specified in the respective datasheets.
Can the AD5328ARUZ be used as a drop-in replacement for the AD5326BRU?
No. The AD5328ARUZ has eight DAC channels while the AD5326BRU has four, and their pinouts differ. A drop-in replacement is not possible without redesigning the PCB and verifying all electrical and timing parameters against the target application requirements.
What package type do the AD5328ARUZ and AD5326BRU use?
Both the AD5328ARUZ and the AD5326BRU are supplied in a 16-lead TSSOP (Thin Shrink Small Outline Package). The "RU" suffix in both part numbers denotes the TSSOP package option from Analog Devices.
Do the AD5328ARUZ and AD5326BRU have internal or external reference options?
Both devices require an external reference voltage applied to the REF pin to set the DAC output range. Neither the AD5328 nor the AD5326 includes an internal reference, so the output span is determined by the external reference and the gain configuration of the output amplifier.