Part A
AD5308ARUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2931 PCS
- Package
- TSSOP-16
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5308ARUZ and AD5307ARU are both quad 8-bit voltage-output DACs from the AD5307/AD5308 family, sharing identical resolution, channel count, supply range, and TSSOP-16 footprint. The AD5308ARUZ adds a hardware LDAC pin and a CLR pin for asynchronous output update and reset, while the AD5307ARU omits these pins and instead exposes a second reference input (REFINB) for the upper DAC pair. The AD5308ARUZ is therefore a strong functional replacement candidate for the AD5307ARU in most designs, provided the additional LDAC/CLR control pins are either driven or tied to the appropriate logic levels and the single-reference configuration of the AD5307ARU is acceptable.
Resolution and Channel Count
High match
Package Type
High match
Reference Input Configuration
Validation required
Control and Interface Pins
Validation required
Parts at a glance
Part B
AD5307ARU
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4844 PCS
- Package
- TSSOP-16
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
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 | AD5307ARU | 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 | 8 bits | 8 bits | Resolution defines the smallest analog output step; matching resolution preserves output accuracy and control granularity. |
| Interface Type | SPI / QSPI / MICROWIRE / DSP compatible | SPI / QSPI / MICROWIRE / DSP compatible | The digital interface must match the host controller to allow direct communication without additional glue logic. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Supply range compatibility ensures the device operates correctly within the system power rails. |
| Output Voltage Range | 0 V to VREF | 0 V to VREF | Output span must match the required signal range for the target application. |
| Reference Input | External | External | External reference support allows flexible output scaling and matching to system reference architecture. |
| Package Type | 16-Lead TSSOP | 16-Lead TSSOP | Package compatibility determines whether the part can be placed on the same PCB footprint. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +85 °C | Temperature range affects suitability for industrial or automotive environments and long-term reliability. |
| Power-Down Modes | Yes | Yes | Power-down capability reduces standby current, which is important for low-power system designs. |
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 | AD5308ARUZ | AD5307ARU |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 8 | - |
| Number of D/A Converters | 8 | - |
| Settling Time | 8µs | - |
| Output Type | Voltage - Buffered | - |
| Differential Output | No | - |
| Data Interface | SPI, DSP | - |
| Reference Type | External | - |
| Voltage - Supply, Analog | 2.5V ~ 5.5V | - |
| Voltage - Supply, Digital | 2.5V ~ 5.5V | - |
| INL / DNL(LSB) | ±0.15, ±0.02 | - |
| Architecture | String DAC | - |
| Operating Temperature | -40°C ~ 125°C | - |
Frequently asked questions
What are the main differences between the AD5308ARUZ and the AD5307ARU?
The AD5308ARUZ is an octal 8-bit digital-to-analog converter (DAC), while the AD5307ARU is a quad 8-bit DAC. Both are members of the Analog Devices AD530x family and share a similar architecture, but the AD5308 provides eight DAC channels and the AD5307 provides four DAC channels. The AD5308ARUZ is specified in a 16-lead TSSOP package, and the AD5307ARU is specified in a 16-lead TSSOP package as well, but the channel count and internal register map differ.
Are the AD5308ARUZ and AD5307ARU pin-compatible?
No. Although both devices are offered in 16-lead TSSOP packages, the AD5308ARUZ uses the additional pins for the extra four DAC outputs and associated reference inputs, while the AD5307ARU does not provide those channels. Pin functions and the serial interface register map are not identical, so they cannot be treated as pin-compatible substitutes without a detailed comparison against the respective datasheets.
What is the resolution and number of DAC channels for each device?
The AD5308ARUZ provides eight independent 8-bit DAC channels. The AD5307ARU provides four independent 8-bit DAC channels. Both devices have a resolution of 8 bits and use a resistor-string architecture with an output amplifier capable of driving rail-to-rail outputs.
What serial interface do the AD5308ARUZ and AD5307ARU use?
Both devices use a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. The interface operates at clock rates up to 30 MHz. The AD5308ARUZ requires additional address bits or daisy-chain handling to access all eight channels, while the AD5307ARU accesses four channels. The exact register map and command structure should be verified in the respective datasheets.
What are the supply voltage and reference input requirements for these DACs?
Both the AD5308ARUZ and AD5307ARU operate from a single 2.5 V to 5.5 V supply. Each device has a reference input pin that sets the full-scale output voltage. The reference input range is 0 V to VDD. The output voltage is determined by the reference voltage and the digital code. External reference decoupling is recommended as specified in the datasheets.
Can the AD5308ARUZ be used as a drop-in replacement for the AD5307ARU in an existing design?
No. The AD5308ARUZ has eight DAC channels and the AD5307ARU has four. The package pinout, register map, and channel addressing are different. A drop-in replacement is not possible without redesigning the PCB layout, updating the firmware to handle the different channel count and register structure, and verifying all timing and reference requirements against the AD5308ARUZ datasheet.
What are the operating temperature ranges for the AD5308ARUZ and AD5307ARU?
Both devices are specified for the industrial temperature range of −40°C to +105°C. The AD5308ARUZ and AD5307ARU are available in 16-lead TSSOP packages. The suffix "ARU" indicates the TSSOP package and industrial temperature range. The "Z" suffix on the AD5308ARUZ indicates a lead-free, RoHS-compliant package.
What are the typical applications for the AD5308ARUZ and AD5307ARU?
These DACs are typically used in portable battery-powered instruments, digital gain and offset adjustment, programmable voltage and current sources, programmable attenuators, and industrial process control. The AD5308ARUZ is suited for applications requiring eight independent DAC channels in a compact footprint, while the AD5307ARU is used where four channels are sufficient.