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
Not a drop-in replacement
The AD5308ARUZ and AD5303BRUZ are not drop-in replacements for each other. The AD5308ARUZ is an octal 8-bit DAC with eight independent voltage outputs, while the AD5303BRUZ is a dual 8-bit DAC with two voltage outputs. They differ in channel count, pin count and package footprint, digital interface configuration, and reference architecture, so a direct board-level substitution is not possible without redesign.
Different channel count
Different package and pin count
Different digital interface
Different reference architecture
Parts at a glance
Part B
AD5303BRUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5223 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 | AD5303BRUZ | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 8 | 2 | Channel count determines how many independent analog outputs the device can drive, directly affecting functional substitutability in multi-channel systems. |
| Resolution | 8 bits | 8 bits | Resolution defines the smallest analog output step; matching resolution is essential for equivalent output precision. |
| Interface Type | SPI / DSP compatible serial | I2C-compatible serial | The digital interface must match the host controller; SPI and I2C are not interchangeable without hardware or firmware changes. |
| 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 ensures the DAC operates within safe limits. |
| Package Type | 16-lead TSSOP | 10-lead MSOP | Package footprint and pin count affect PCB layout and cannot be substituted without board redesign. |
| Output Type | Voltage output | Voltage output | Output type must match the signal chain requirement; voltage-output DACs are not directly interchangeable with current-output types. |
| Reference Input | External reference | External reference | Reference configuration affects output scaling and accuracy; both requiring an external reference simplifies substitution. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Temperature range must cover the application environment to ensure reliable operation. |
| Power-Down Capability | Yes | Yes | Power-down mode reduces current consumption in low-power or battery-operated designs. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5308ARUZ | AD5303BRUZ |
|---|---|---|
| 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 key differences between the AD5308ARUZ and AD5303BRUZ?
The AD5308ARUZ is an octal 8-bit DAC with eight independent voltage outputs, while the AD5303BRUZ is a dual 8-bit DAC with two voltage outputs. The AD5308ARUZ provides eight DAC channels in a 16-lead TSSOP package, whereas the AD5303BRUZ provides two DAC channels in a 10-lead MSOP package. Both are 8-bit resolution, single-supply, voltage-output DACs from Analog Devices.
Are the AD5308ARUZ and AD5303BRUZ pin-compatible?
No. The AD5308ARUZ is housed in a 16-lead TSSOP package, and the AD5303BRUZ is housed in a 10-lead MSOP package. They have different pin counts, pin assignments, and package footprints, so they are not pin-compatible or drop-in replacements for each other.
What is the resolution and number of DAC channels for each device?
Both the AD5308ARUZ and AD5303BRUZ are 8-bit resolution DACs. The AD5308ARUZ integrates eight independent DAC channels, while the AD5303BRUZ integrates two independent DAC channels.
What supply voltage range do the AD5308ARUZ and AD5303BRUZ support?
Both devices operate from a single supply voltage of 2.5 V to 5.5 V, as specified in their respective Analog Devices datasheets. This wide supply range makes them suitable for both 3 V and 5 V systems.
What digital interface do the AD5308ARUZ and AD5303BRUZ use?
Both the AD5308ARUZ and AD5303BRUZ use a standard SPI-compatible serial interface for communication with a microcontroller or DSP. The interface supports clock rates up to 30 MHz, allowing fast updates of the DAC outputs.
Can the AD5308ARUZ and AD5303BRUZ be used in the same application?
They can be used in the same system if the application requires different channel counts. The AD5308ARUZ is suitable for applications needing up to eight DAC outputs, while the AD5303BRUZ is suitable for applications needing only two DAC outputs. However, they are not interchangeable on the same PCB footprint due to different package sizes and pinouts.
Do the AD5308ARUZ and AD5303BRUZ have internal reference options?
No. Both the AD5308ARUZ and AD5303BRUZ require an external reference voltage to set the full-scale output range. They do not include an internal voltage reference, so the reference must be supplied externally to the REF pin(s) as specified in the datasheets.
What are the operating temperature ranges for the AD5308ARUZ and AD5303BRUZ?
Both the AD5308ARUZ and AD5303BRUZ are specified for the industrial temperature range of −40°C to +105°C, as stated in their Analog Devices datasheets. This makes them suitable for industrial and automotive applications requiring wide temperature operation.