Part A
AD5324BRMZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6981 PCS
- Package
- MSOP-10
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5322BRMZ and AD5324BRMZ are functionally compatible dual and quad 12-bit DACs from the same Analog Devices AD53xx family, sharing an identical 10-lead MSOP footprint, SPI interface, and 2.5 V to 5.5 V supply range. The AD5324BRMZ offers two additional DAC channels and a hardware LDAC pin, making it a viable higher-density substitute for the AD5322BRMZ in most designs, provided the host firmware is updated to address the extra channels and the board layout accommodates the LDAC net.
Resolution
High match
Package Type
High match
Channel Count
Validation required
Interface Compatibility
Validation required
Parts at a glance
Part B
AD5322BRMZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1406 PCS
- Package
- MSOP-10
- Series
- Data Acquisition - Digital to Analog Converters (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 | AD5322BRMZ | AD5324BRMZ | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 2 | 4 | Channel count determines how many independent analog outputs are available; a 4-channel device can replace two 2-channel devices in multi-output designs. |
| Resolution | 12 bits | 12 bits | Resolution sets the smallest analog output step; matching resolution ensures equivalent output precision and quantization performance. |
| Interface Type | SPI / QSPI / MICROWIRE / DSP compatible | SPI / QSPI / MICROWIRE / DSP compatible | A compatible serial interface allows the same host controller and firmware protocol to drive either device without redesign. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Matching supply range means both parts can operate from the same system rail without level shifting or regulator changes. |
| Output Voltage Range | 0 V to VREF | 0 V to VREF | Identical output span ensures the same external reference and signal conditioning circuitry can be reused. |
| Reference Input | External | External | Both requiring an external reference allows a common reference source to be shared, simplifying the analog supply design. |
| Package | 10-Lead MSOP | 10-Lead MSOP | A common package footprint enables a drop-in layout change without PCB redesign when channel count requirements change. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Equivalent temperature ratings ensure both parts meet the same environmental and reliability requirements for industrial applications. |
| INL (Integral Nonlinearity) | ±1 LSB max | ±1 LSB max | Matching linearity specifications guarantee comparable accuracy and end-to-end transfer function performance. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5324BRMZ | AD5322BRMZ |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 4 | 2 |
| 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 ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What are the key differences between the AD5322BRMZ and AD5324BRMZ?
The AD5322BRMZ is a dual 12-bit digital-to-analog converter (DAC), while the AD5324BRMZ is a quad 12-bit DAC. Both are members of the Analog Devices AD53xx family, offer 12-bit resolution, and are specified for operation from a 2.5 V to 5.5 V supply. The primary difference is the number of DAC channels: the AD5322 provides two voltage outputs, and the AD5324 provides four voltage outputs. Both are offered in a 10-lead MSOP (RMZ suffix) package.
Are the AD5322BRMZ and AD5324BRMZ pin-compatible?
No. The AD5322BRMZ and AD5324BRMZ are not pin-compatible. The AD5322BRMZ uses a 10-lead MSOP package with two DAC outputs, while the AD5324BRMZ uses a 10-lead MSOP package with four DAC outputs. The pin assignments differ because the AD5324 requires additional output pins and a different reference configuration. A direct drop-in replacement is not possible without PCB layout changes.
Do the AD5322BRMZ and AD5324BRMZ have the same resolution and accuracy specifications?
Yes. Both the AD5322BRMZ and AD5324BRMZ are 12-bit DACs with guaranteed monotonicity, relative accuracy (INL) of ±1 LSB typical and ±2 LSB maximum, and differential nonlinearity (DNL) of ±0.2 LSB typical and ±1 LSB maximum. Both offer similar offset error, gain error, and temperature drift characteristics as specified in the Analog Devices AD5322/AD5324 datasheet.
Can the AD5322BRMZ and AD5324BRMZ operate from the same supply voltage range?
Yes. Both the AD5322BRMZ and AD5324BRMZ operate from a single supply voltage of 2.5 V to 5.5 V. They also support a reference input range that allows the output voltage span to be set from 0 V to VREF. The supply current differs because the AD5324 has four DAC channels instead of two, resulting in higher total power consumption for the quad version.
What is the difference in power consumption between the AD5322BRMZ and AD5324BRMZ?
The AD5322BRMZ (dual DAC) typically consumes less supply current than the AD5324BRMZ (quad DAC) under identical operating conditions. Per the Analog Devices datasheet, the AD5322 typically draws 0.6 mA at 5 V, while the AD5324 typically draws 1.0 mA at 5 V. Both parts feature a power-down mode that reduces current to typically 0.2 µA at 5 V.
Are the AD5322BRMZ and AD5324BRMZ interchangeable in existing designs?
No. Because the AD5322BRMZ and AD5324BRMZ differ in channel count, pinout, and package pin assignments, they are not interchangeable without redesigning the PCB and updating the control firmware. The AD5324 requires additional serial interface commands to address four channels, whereas the AD5322 addresses only two channels. Designers must verify the digital interface, reference configuration, and output loading for each specific part.
Do both the AD5322BRMZ and AD5324BRMZ use the same serial interface?
Yes. Both the AD5322BRMZ and AD5324BRMZ 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. However, the command set differs: the AD5324 includes additional address bits to select one of four DAC channels, while the AD5322 selects one of two channels.
What are the package and temperature range specifications for the AD5322BRMZ and AD5324BRMZ?
Both the AD5322BRMZ and AD5324BRMZ are available in a 10-lead MSOP package and are specified for the industrial temperature range of −40°C to +105°C. The "RMZ" suffix indicates the MSOP package and RoHS-compliant lead finish. Both parts are qualified for operation over the full industrial temperature range as stated in the Analog Devices datasheet.