Part A
AD5328ARUZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5891 個数
- Package
- TSSOP-16
- Series
- データ取得 - デジタル/アナログコンバータ (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5328ARUZ and AD5328BRU are functionally equivalent octal 12-bit DACs sharing identical architecture, channel count, and package type. The BRU grade offers a tighter relative accuracy specification, making it a viable higher-precision substitute for the ARUZ in most designs, provided the application does not require the ARUZ's specific grade-level guarantees.
Resolution
High match
Channel Count
High match
Package Type
High match
Relative Accuracy
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 | AD5328BRU | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 8 | 8 | Channel count must match for the device to serve the same multi-channel application. |
| Resolution | 12 bits | 12 bits | Resolution determines the smallest analog output step and overall precision of the DAC. |
| Interface Type | SPI / QSPI / MICROWIRE / DSP compatible | SPI / QSPI / MICROWIRE / DSP compatible | The digital interface must be compatible with the host controller for direct substitution. |
| 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, buffered | Voltage output, buffered | Output type must match the load requirements of the target circuit. |
| INL (Integral Nonlinearity) | ±16 LSB max | ±2 LSB max | INL defines absolute accuracy; the B-grade offers significantly better linearity for precision applications. |
| DNL (Differential Nonlinearity) | ±1 LSB max | ±1 LSB max | DNL guarantees monotonicity; both grades are specified as monotonic to 12 bits. |
| Offset Error | ±10 mV max | ±5 mV max | Offset error affects zero-code accuracy; the B-grade provides tighter offset for higher precision. |
| Gain Error | ±0.25 % FSR max | ±0.25 % FSR max | Gain error impacts full-scale accuracy; both grades share the same specification. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Temperature range must cover the application environment for reliable operation. |
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 | AD5328ARUZ | AD5328BRU |
|---|---|---|
| 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 are the key differences between the AD5328ARUZ and AD5328BRU?
The AD5328ARUZ and AD5328BRU are both 8-channel, 12-bit digital-to-analog converters (DACs) from Analog Devices in a 16-lead TSSOP package. The primary difference is the grade: the AD5328ARUZ is the A-grade version, while the AD5328BRU is the B-grade version. The B-grade offers tighter specifications, particularly in relative accuracy (INL) and offset error, compared to the A-grade. Both share the same functional architecture, interface, and pinout.
Are the AD5328ARUZ and AD5328BRU pin-compatible and functionally interchangeable?
Yes, both devices are pin-compatible and functionally interchangeable in terms of package, pinout, and interface. They both use a 16-lead TSSOP package and a serial SPI interface. However, because the B-grade has tighter performance specifications, substituting an A-grade for a B-grade may not meet the accuracy requirements of a design that was characterized with the B-grade. Always verify the target design's accuracy budget against the specific grade's datasheet limits.
What is the resolution and number of DAC channels for these devices?
Both the AD5328ARUZ and AD5328BRU are 12-bit DACs with 8 independent voltage-output channels. They are part of the AD5328 family, which provides 12-bit resolution and guaranteed monotonicity by design.
What is the difference in relative accuracy (INL) between the AD5328ARUZ and AD5328BRU?
Per the Analog Devices AD5328 datasheet, the A-grade (AD5328ARUZ) has a relative accuracy (INL) specification of ±2 LSB maximum, while the B-grade (AD5328BRU) has a tighter INL specification of ±1 LSB maximum. This makes the B-grade more suitable for applications requiring higher linearity.
Do the AD5328ARUZ and AD5328BRU have the same operating temperature range?
Yes, both the AD5328ARUZ and AD5328BRU are specified for the industrial temperature range of −40°C to +105°C. This is a standard specification for both grades in the AD5328 family.
What is the difference in offset error between the AD5328ARUZ and AD5328BRU?
According to the AD5328 datasheet, the A-grade (AD5328ARUZ) has a maximum offset error of ±10 mV, while the B-grade (AD5328BRU) has a maximum offset error of ±5 mV. The B-grade therefore provides better absolute accuracy at zero-scale.
Can the AD5328ARUZ be used as a drop-in replacement for the AD5328BRU in an existing design?
Physically and functionally, yes, because both are pin-compatible 16-lead TSSOP devices with the same SPI interface. However, from a performance standpoint, the AD5328ARUZ has looser INL and offset error specifications than the AD5328BRU. If the original design was validated with the B-grade and relies on its tighter accuracy, replacing it with the A-grade may cause the system to fall out of specification. A design review against the A-grade datasheet limits is required.
What is the supply voltage range for the AD5328ARUZ and AD5328BRU?
Both devices operate from a single supply voltage of 2.5 V to 5.5 V. The AD5328 family also supports a separate VLOGIC pin for interfacing with 1.8 V, 2.5 V, 3 V, or 5 V logic, allowing flexible system integration.