Part A
AD5324BRMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6981 PCS
- Package
- MSOP-10
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5324BRMZ and AD5322ARM are both quad 12-bit voltage-output DACs from Analog Devices in MSOP-10 packages, sharing identical resolution, channel count, supply range, and interface type. The AD5324BRMZ offers a higher reference input range and faster settling time, while the AD5322ARM provides a wider operating temperature range. The AD5324BRMZ is a viable functional replacement candidate for the AD5322ARM in most applications, though reference voltage headroom and thermal margin should be validated against the specific design requirements.
Resolution and Channel Count
High match
Package and Pinout
High match
Reference Input Voltage
Validation required
Operating Temperature Range
Validation required
Parts at a glance
Part B
AD5322ARM
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4190 PCS
- Package
- MSOP-10
- 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 | AD5324BRMZ | AD5322ARM | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 2 | Determines how many independent analog outputs are available; a 4-channel device cannot be directly substituted where 2 channels suffice, and vice versa for multi-channel designs. |
| Resolution | 12 bits | 12 bits | Both provide 12-bit resolution, so output granularity and quantization error are equivalent, supporting functional substitutability in precision terms. |
| Interface Type | SPI / QSPI / MICROWIRE / DSP compatible | SPI / QSPI / MICROWIRE / DSP compatible | Matching serial interfaces allow the same host controller and firmware protocol to drive either device without redesign. |
| Supply Voltage (VDD) | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Identical supply range means both can operate from the same system rail, simplifying power architecture and level shifting. |
| Reference Input | External reference | External reference | Both require an external reference, so the same reference source and output scaling can be reused across designs. |
| Package / Mounting | 10-Lead MSOP (RM) | 10-Lead MSOP (RM) | Same package and footprint enable drop-in PCB compatibility without layout changes. |
| 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. |
| Output Type | Voltage output | Voltage output | Both provide voltage-mode outputs, so downstream signal conditioning and load driving requirements are comparable. |
| Power-On Reset | Yes, to zero scale | Yes, to zero scale | Identical power-on reset behavior ensures predictable startup states and safe system initialization. |
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 | AD5324BRMZ | AD5322ARM |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| 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 AD5324BRMZ and AD5322ARM?
The AD5324BRMZ is a quad 12-bit DAC with an SPI interface, while the AD5322ARM is a dual 12-bit DAC with an SPI interface. The AD5324 offers four output channels, whereas the AD5322 provides two. Both are members of Analog Devices' nanoDAC family and operate from a 2.5 V to 5.5 V supply.
Are the AD5324BRMZ and AD5322ARM pin-compatible?
No. The AD5324BRMZ is supplied in a 10-lead MSOP (RM-10) package, while the AD5322ARM is supplied in a 10-lead MSOP (RM-10) package as well, but the pin functions differ because the AD5324 has four DAC outputs and the AD5322 has two. The pinouts are not interchangeable without design changes.
What is the resolution and number of DAC channels for each device?
Both the AD5324BRMZ and AD5322ARM are 12-bit DACs. The AD5324BRMZ provides four independent DAC channels, while the AD5322ARM provides two independent DAC channels.
What serial interface do the AD5324BRMZ and AD5322ARM use?
Both devices use a 3-wire SPI-compatible serial interface that operates at clock rates up to 30 MHz. The interface is compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards.
What is the supply voltage range for the AD5324BRMZ and AD5322ARM?
Both the AD5324BRMZ and AD5322ARM operate from a single supply voltage of 2.5 V to 5.5 V. They also feature a power-down mode that reduces current consumption to typically 0.2 µA at 5 V.
Can the AD5324BRMZ and AD5322ARM be used in daisy-chain applications?
Yes. Both devices support daisy-chain operation via the SDO pin, allowing multiple DACs to be connected in a chain. This is useful when multiple DACs need to be updated simultaneously or when board space is limited.
What are the operating temperature ranges for the AD5324BRMZ and AD5322ARM?
Both the AD5324BRMZ and AD5322ARM are specified for operation over the industrial temperature range of −40°C to +105°C.
What are the package options for the AD5324BRMZ and AD5322ARM?
The AD5324BRMZ is available in a 10-lead MSOP package. The AD5322ARM is also available in a 10-lead MSOP package. Both are RoHS-compliant and available in tube or tape-and-reel packaging.