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 AD5328ARUZ and AD5327BRU are both octal 12-bit voltage-output DACs from Analog Devices in 16-lead TSSOP packages, sharing a common architecture and interface family. While they are not pin-for-pin identical due to differing reference and output amplifier configurations, they represent a viable functional replacement candidate when the reference architecture and output range requirements are validated against the target design.
Resolution
High match
Channel Count
High match
Reference Architecture
Not compatible
Package Type
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 | AD5327BRU | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 8 | 4 | Channel count determines how many independent analog outputs the system can drive, directly affecting board layout and whether the part is a functional substitute. |
| Resolution | 12 bits | 12 bits | Resolution sets the smallest output step and achievable accuracy; matching resolution is essential for equivalent analog performance. |
| Interface Type | SPI / DSP compatible serial | SPI / DSP compatible serial | The digital interface must match the host controller to allow direct communication without glue logic. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Supply range determines compatibility with the system power rail and output swing capability. |
| Output Voltage Range | 0 V to VREF | 0 V to VREF | Output span must match the required signal range for the target application. |
| Package Type | 16-lead TSSOP | 16-lead TSSOP | Package footprint and thermal characteristics affect PCB layout and assembly compatibility. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Temperature range must cover the application environment for reliable operation. |
| Reference Input | External | External | Reference configuration affects output accuracy and whether an external reference circuit is required. |
| Power-On Reset State | Zero-scale or midscale (selectable) | Zero-scale or midscale (selectable) | The reset state determines the safe output level at power-up, which is critical for actuator and control-loop safety. |
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 | AD5327BRU |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Analog Devices Inc. |
| 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 | SPI, DSP |
| 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 main differences between the AD5328ARUZ and the AD5327BRU?
The AD5328ARUZ is an octal 12-bit digital-to-analog converter (DAC) in a 16-lead TSSOP package, while the AD5327BRU is a quad 12-bit DAC in a 16-lead TSSOP package. The AD5328 provides eight DAC channels, whereas the AD5327 provides four DAC channels. Both devices offer 12-bit resolution and are members of the AD532x family from Analog Devices.
Are the AD5328ARUZ and AD5327BRU pin-compatible?
No. Although both devices are housed in a 16-lead TSSOP package, their pin functions differ because the AD5328 has eight DAC outputs and the AD5327 has four DAC outputs. The pin assignments are not interchangeable, and the PCB layout must be designed specifically for each device.
What is the resolution and number of DAC channels for each device?
The AD5328ARUZ provides eight 12-bit DAC channels. The AD5327BRU provides four 12-bit DAC channels. Both devices offer 12-bit resolution, but the channel count differs by a factor of two.
What supply voltage and reference voltage do the AD5328ARUZ and AD5327BRU require?
Both the AD5328ARUZ and AD5327BRU operate from a single 2.5 V to 5.5 V supply. They include an on-chip reference with a 2.5 V output. The reference can also be overdriven by an external reference. The output voltage range is 0 V to VREF, where VREF is the reference voltage.
What serial interface do the AD5328ARUZ and AD5327BRU use?
Both devices use a 3-wire SPI-compatible serial interface. The interface operates at clock rates up to 30 MHz and is compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards.
What are the operating temperature ranges for the AD5328ARUZ and AD5327BRU?
Both the AD5328ARUZ and AD5327BRU are specified for operation over the industrial temperature range of -40°C to +105°C.
Can the AD5328ARUZ be used as a drop-in replacement for the AD5327BRU?
No. The AD5328ARUZ has eight DAC channels and the AD5327BRU has four DAC channels. They are not pin-compatible and have different channel counts. A direct drop-in replacement is not possible without redesigning the PCB and updating the system firmware to account for the different number of channels.
What are the package options for the AD5328ARUZ and AD5327BRU?
Both the AD5328ARUZ and AD5327BRU are available in a 16-lead TSSOP package. The AD5328ARUZ is specified as a 16-lead TSSOP, and the AD5327BRU is also specified as a 16-lead TSSOP. The "RU" suffix in both part numbers indicates the TSSOP package option.