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 AD5328ARU are functionally equivalent 8-channel 12-bit DACs from Analog Devices, with the ARUZ version being the RoHS-compliant lead-free package variant of the ARU. Both share identical electrical specifications, resolution, interface, and pinout, making the ARUZ a suitable drop-in replacement for the ARU in most applications where lead-free compliance is required or preferred.
Resolution
High match
Channel Count
High match
Package Type
High match
RoHS Compliance
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 | AD5328ARU | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 8 | 8 | Channel count determines how many independent analog outputs the device can drive; identical count means equivalent output capacity. |
| Resolution | 12 bits | 12 bits | Resolution sets the smallest analog step size; matching resolution ensures equivalent output precision. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Supply range must match the system rail; identical range allows the same power design. |
| Interface Type | SPI | SPI | Digital interface must be compatible with the host controller; matching SPI ensures firmware and wiring compatibility. |
| Output Type | Voltage, buffered | Voltage, buffered | Output configuration determines load driving and external circuitry needs; identical type supports drop-in substitution. |
| Reference Input | External | External | Reference architecture affects accuracy and required external components; matching external reference simplifies replacement. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Temperature range defines environmental limits; identical ratings ensure the same application coverage. |
| Package / Mounting | 16-Lead TSSOP | 16-Lead TSSOP | Package and mounting style must match the PCB footprint; identical TSSOP ensures physical interchangeability. |
| RoHS Compliance | RoHS Compliant | Non-RoHS / Leaded | RoHS status affects regulatory compliance and solder process; the Z suffix denotes lead-free while the non-Z version contains lead. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5328ARUZ | AD5328ARU |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 8 | 8 |
| 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 ~ 125°C |
Frequently asked questions
What is the difference between the AD5328ARUZ and the AD5328ARU?
The AD5328ARUZ and AD5328ARU are both 12-bit, octal, voltage-output digital-to-analog converters from Analog Devices in a 16-lead TSSOP package. The primary difference is the "Z" suffix in AD5328ARUZ, which indicates RoHS compliance and a lead-free package, whereas the AD5328ARU is the non-RoHS, lead-containing version. Both share the same functional specifications, pinout, and electrical performance.
Are the AD5328ARUZ and AD5328ARU functionally interchangeable?
Yes, they are functionally interchangeable. Both devices have identical DAC architecture, resolution, channel count, interface, and pin configuration. The only difference is the package material composition related to RoHS compliance. In designs where RoHS compliance is not required, either part can be used without changing the circuit design or firmware.
What are the key specifications of the AD5328 series?
The AD5328 is an octal, 12-bit, voltage-output DAC with a 2.5 V to 5.5 V supply range, an SPI-compatible serial interface, and an on-chip output amplifier. It offers a settling time of 6 µs, a relative accuracy (INL) of ±1 LSB, and a total unadjusted error (TUE) of ±0.2% FSR. It is available in a 16-lead TSSOP package and operates over the −40°C to +105°C temperature range.
Does the AD5328ARUZ require a different PCB footprint than the AD5328ARU?
No. Both the AD5328ARUZ and AD5328ARU use the same 16-lead TSSOP package with identical pinout and mechanical dimensions. The PCB land pattern, thermal pad requirements, and assembly process are the same for both variants. No layout changes are needed when switching between them.
Which part should be selected for a new RoHS-compliant design?
For new designs requiring RoHS compliance, the AD5328ARUZ should be selected. The AD5328ARU is the non-RoHS version and may not meet current environmental regulations in many regions. Always verify the latest compliance status and availability from the manufacturer or authorized distributors such as DigiKey, Mouser, or Analog Devices directly.
Can the AD5328ARUZ and AD5328ARU be mixed on the same PCB assembly?
Yes, they can be mixed on the same PCB assembly because they are functionally and pin-compatible. However, mixing RoHS and non-RoHS parts on a single assembly may complicate compliance documentation and soldering process control. It is generally recommended to use a single variant throughout a production build to maintain consistency and regulatory compliance.
What interface does the AD5328 use for communication?
The AD5328 uses a 3-wire SPI-compatible serial interface (SYNC, SCLK, and DIN) that operates at clock rates up to 30 MHz. It supports daisy-chain operation and includes a power-on reset circuit that powers up the DAC outputs to zero scale. The interface is compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards.