Part A
AD5308ARUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2931 PCS
- Package
- TSSOP-16
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5308ARUZ and AD5308ARU are functionally equivalent octal 8-bit DACs from Analog Devices, with the ARUZ suffix denoting a RoHS-compliant, lead-free package variant of the same silicon. Both parts share identical resolution, channel count, interface, and electrical characteristics, making the AD5308ARUZ a suitable drop-in replacement for the AD5308ARU in most applications, provided the lead-free termination finish is acceptable for the target assembly process.
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 | AD5308ARUZ | AD5308ARU | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 8 | 8 | Channel count must match for the device to drive the same number of analog outputs in a target design. |
| Resolution | 8 bits | 8 bits | Resolution determines the smallest analog output step and overall accuracy achievable by the DAC. |
| Interface Type | SPI / DSP-compatible serial | SPI / DSP-compatible serial | The digital interface must be compatible with the host controller for the part to be functionally interchangeable. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Supply range must cover the system rail voltage to ensure correct operation and output swing. |
| Reference Input | External reference | External reference | The reference configuration sets the full-scale output and must match the board's reference source. |
| Output Type | Voltage output | Voltage output | Voltage-output DACs drive loads directly, so the output type must match the intended signal chain. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Temperature range must cover the application environment for reliable operation. |
| Package / Lead Finish | 16-Lead TSSOP, Pb-free / RoHS-compliant | 16-Lead TSSOP, standard lead finish | The Z suffix denotes Pb-free/RoHS compliance, which affects solderability and regulatory compliance in production. |
| Packaging / Ordering Suffix | Z-grade (RoHS-compliant) ordering variant | Non-Z (legacy) ordering variant | Ordering suffix determines the exact part delivered and whether it meets current environmental regulations. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5308ARUZ | AD5308ARU |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 8 | 8 |
| Number of D/A Converters | 8 | 8 |
| Settling Time | 8µs | 8µs |
| 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) | ±0.15, ±0.02 | ±0.15, ±0.02 |
| Architecture | String DAC | String DAC |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
Frequently asked questions
What is the difference between the AD5308ARUZ and the AD5308ARU?
The AD5308ARUZ is the RoHS-compliant, lead-free version of the AD5308ARU. Both are 8-channel, 8-bit digital-to-analog converters (DACs) from Analog Devices in a 16-lead TSSOP package. The primary difference is the package/ordering suffix: the "Z" suffix indicates RoHS compliance and a lead-free construction, while the AD5308ARU is the non-RoHS, lead-containing version.
Are the AD5308ARUZ and AD5308ARU functionally interchangeable?
Yes, they are functionally identical. Both parts share the same die, electrical specifications, pinout, and 16-lead TSSOP package. The only difference is the RoHS/lead-free status indicated by the "Z" suffix. In designs where RoHS compliance is not required, either part can be used, provided the PCB assembly process is compatible with the respective finish.
What are the key specifications of the AD5308 series?
The AD5308 is an octal, 8-bit buffered voltage-output DAC with a 2-wire (I²C-compatible) serial interface. It operates from a single 2.5 V to 5.5 V supply, offers a rail-to-rail output amplifier, and provides a power-on reset to zero scale. It is specified over the −40°C to +105°C industrial temperature range and is available in a 16-lead TSSOP package.
Can the AD5308ARUZ be used as a drop-in replacement for the AD5308ARU?
Yes, the AD5308ARUZ is a drop-in replacement for the AD5308ARU in terms of footprint, pinout, and electrical performance. The only consideration is that the AD5308ARUZ is lead-free and RoHS-compliant, which may require adjustments to the soldering profile and PCB surface finish if the original design was qualified for leaded assembly.
What is the significance of the "Z" suffix in AD5308ARUZ?
In Analog Devices' nomenclature, the "Z" suffix denotes RoHS compliance and a lead-free package. The AD5308ARUZ is therefore the environmentally compliant variant of the AD5308ARU, which contains lead in its package finish and is not RoHS-compliant.
Are the AD5308ARUZ and AD5308ARU available in the same package?
Yes, both the AD5308ARUZ and AD5308ARU are offered in the same 16-lead TSSOP (Thin Shrink Small Outline Package) with identical pin assignments and mechanical dimensions. This ensures PCB layout compatibility between the two variants.
Which part should be selected for a new RoHS-compliant design?
For new designs requiring RoHS compliance, the AD5308ARUZ should be selected. The AD5308ARU is the non-RoHS version and is generally not recommended for new designs where environmental compliance is mandated. Both parts are functionally equivalent, so the selection is based on regulatory and assembly requirements.