Part A
AD5324BRMZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 6981 個数
- Package
- MSOP-10
- 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 AD5324BRMZ and AD5325ARM are both quad 12-bit voltage-output DACs from Analog Devices with an I²C-compatible serial interface, offering strong functional overlap for many design requirements. However, they differ in reference architecture and package footprint, so a direct drop-in substitution is not guaranteed without validating the reference configuration and board layout. The AD5324BRMZ provides an external reference input, while the AD5325ARM integrates an on-chip reference, which may affect accuracy, drift, and external component count. Engineers should confirm reference requirements, output range, and mechanical compatibility before adopting the AD5325ARM as a replacement.
Resolution
High match
Output Type
High match
Reference Architecture
Validation required
Package Type
Not compatible
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5324BRMZ | AD5325ARM | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 4 | Channel count determines how many independent analog outputs the device can drive; both are quad DACs, so they are functionally equivalent in this respect. |
| Resolution | 12 bits | 12 bits | Resolution sets the smallest analog output step; identical 12-bit resolution means equivalent output granularity. |
| Interface Type | SPI / DSP compatible serial | I2C compatible serial | The digital interface must match the host controller; SPI versus I2C makes these devices non-drop-in replacements for each other. |
| 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; identical ranges allow use in the same voltage domains. |
| Reference Type | External reference | External reference | Reference architecture affects output accuracy and board design; both requiring an external reference means similar external circuitry is needed. |
| Package / Mounting | 10-Lead MSOP (RM), Surface Mount | 10-Lead MSOP (RM), Surface Mount | Package and mounting style must match the PCB footprint; identical MSOP-10 packages allow the same land pattern. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Temperature range defines the environments where the part can operate reliably; identical ranges suit the same applications. |
| Output Type | Voltage output | Voltage output | Output type must match the load requirements; both voltage-output DACs drive the same kinds of analog circuits. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5324BRMZ | AD5325ARM |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 4 | 4 |
| Settling Time | 10µs | 10µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI, DSP | I²C |
| 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 ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What are the main differences between the AD5324BRMZ and the AD5325ARM?
The AD5324BRMZ is a quad 12-bit DAC in a 10-lead MSOP package, while the AD5325ARM is a quad 12-bit DAC in a 10-lead MSOP package with an on-chip reference. The AD5324BRMZ requires an external reference, whereas the AD5325ARM includes an internal 2.5 V reference. Both are members of the Analog Devices AD532x family and share similar serial interface and settling characteristics.
Are the AD5324BRMZ and AD5325ARM pin-compatible?
No. Although both devices are offered in a 10-lead MSOP package, their pin functions differ. The AD5325ARM provides a REF pin for the internal reference and a VOUT pin arrangement that differs from the AD5324BRMZ, which uses the corresponding pins for external reference input and other functions. Designers must consult the respective datasheets before considering any layout reuse.
Can the AD5324BRMZ and AD5325ARM be used interchangeably in an existing design?
Not directly. The AD5324BRMZ requires an external reference voltage, while the AD5325ARM has an internal 2.5 V reference. Substitution would require verifying the reference architecture, output voltage range, and pin configuration against the target design. Analog Devices does not specify these parts as drop-in replacements for each other.
What is the resolution and number of DAC channels for both devices?
Both the AD5324BRMZ and the AD5325ARM are quad-channel, 12-bit digital-to-analog converters. Each provides four voltage output DACs with 12-bit resolution, as specified in the Analog Devices AD5324 and AD5325 datasheets.
Do both devices support the same serial interface?
Yes. Both the AD5324BRMZ and the AD5325ARM use a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. The interface operates at clock rates specified in the respective datasheets, and both devices support daisy-chain operation.
What are the operating temperature ranges for the AD5324BRMZ and AD5325ARM?
The AD5324BRMZ is specified for the industrial temperature range of −40°C to +105°C. The AD5325ARM is specified for the automotive temperature range of −40°C to +125°C. These ranges are documented in the Analog Devices datasheets for the respective grades.
Which device is better suited for applications requiring an internal reference?
The AD5325ARM is better suited for designs that benefit from an on-chip reference, as it integrates a 2.5 V internal reference. The AD5324BRMZ does not include an internal reference and requires an external reference source, making it more suitable for systems where a precise external reference is already available or where a different reference voltage is needed.
Are the AD5324BRMZ and AD5325ARM RoHS compliant?
Yes. Both the AD5324BRMZ and the AD5325ARM are available in RoHS-compliant packages, as indicated by the "Z" suffix in the AD5324BRMZ part number and the "RM" package designation for the AD5325ARM. Designers should confirm the specific ordering code and compliance documentation from Analog Devices or authorized distributors.