Part A
AD5318BRUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2182 PCS
- Package
- TSSOP-16
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5318BRUZ and AD5318BRU are functionally equivalent octal 10-bit DACs from Analog Devices, with the BRUZ grade offering a lead-free, RoHS-compliant package option. Both parts share identical core specifications, making the AD5318BRUZ a viable drop-in replacement for the AD5318BRU in most applications, provided the lead-free package and moisture sensitivity level are acceptable for the target assembly process.
Resolution
High match
Channel Count
High match
Package Type
High match
Lead Finish / 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 | AD5318BRUZ | AD5318BRU | 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 | 10 bit | 10 bit | Resolution determines the smallest analog output step and directly affects achievable output precision. |
| Interface Type | SPI / DSP / Microwire compatible | SPI / DSP / Microwire compatible | The digital interface must be compatible with the host controller for the DAC to be programmed correctly. |
| 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 swing. |
| Output Type | Voltage output | Voltage output | Output type must match the signal chain requirement, whether voltage-mode or current-mode drive is needed. |
| Mounting Type | Surface mount | Surface mount | Mounting style must match the PCB assembly process and available board footprint. |
| Package / Case | 16-TSSOP | 16-TSSOP | Package and pinout must be compatible for a drop-in replacement on an existing PCB layout. |
| RoHS Compliance | RoHS compliant | Non-RoHS / leaded | RoHS status affects regulatory compliance and may restrict use in certain markets or product lines. |
| Packaging / Ordering Suffix | Z suffix (RoHS, tube/tray) | No Z suffix (standard, tube/tray) | The ordering suffix identifies environmental and packaging variants, which impacts procurement and assembly handling. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5318BRUZ | AD5318BRU |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 10 | 10 |
| Number of D/A Converters | 8 | 8 |
| Settling Time | 9µs | 9µs |
| 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) | ±0.5, ±0.05 | ±0.5, ±0.05 |
| Architecture | String DAC | String DAC |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
Frequently asked questions
What is the difference between the AD5318BRUZ and the AD5318BRU?
The AD5318BRUZ and AD5318BRU are both 8-channel, 10-bit digital-to-analog converters from Analog Devices in a 16-lead TSSOP package. The primary difference is the suffix: the "Z" in AD5318BRUZ indicates RoHS-compliant, lead-free construction, while the AD5318BRU is the non-RoHS, lead-containing version. Both share the same functional specifications, pinout, and electrical performance.
Are the AD5318BRUZ and AD5318BRU functionally interchangeable?
Yes. Both devices have identical functional specifications, including 10-bit resolution, 8 DAC channels, and a 2.5 V to 5.5 V supply range. They are interchangeable in terms of electrical performance and pin configuration. The only difference is the RoHS compliance status of the package finish.
What is the resolution and number of DAC channels for these devices?
Both the AD5318BRUZ and AD5318BRU are 10-bit DACs with 8 independent voltage output channels. They are part of the AD5318 series, which provides octal 10-bit DACs in a compact 16-lead TSSOP package.
What is the supply voltage range for the AD5318BRUZ and AD5318BRU?
Both devices operate from a single supply voltage ranging from 2.5 V to 5.5 V. This wide supply range makes them suitable for both 3 V and 5 V systems.
What interface do the AD5318BRUZ and AD5318BRU use for communication?
Both devices use a standard SPI-compatible serial interface that operates at clock rates up to 30 MHz. The interface is compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards.
Is the AD5318BRUZ a drop-in replacement for the AD5318BRU?
Yes, the AD5318BRUZ is a drop-in replacement for the AD5318BRU in terms of pinout, package footprint, and electrical performance. The only consideration is that the AD5318BRUZ is RoHS-compliant and lead-free, which may require adjustments to the soldering process if the original design used leaded solder.
What is the operating temperature range for these DACs?
Both the AD5318BRUZ and AD5318BRU are specified for operation over the industrial temperature range of -40°C to +105°C.
What package type do the AD5318BRUZ and AD5318BRU use?
Both devices are housed in a 16-lead TSSOP (Thin Shrink Small Outline Package). The package dimensions and pin assignments are identical between the two versions.