Part A
AD5324ARMZ
ADI公司
- Lifecycle
- Active
- Stock
- 3234 件
- Package
- MSOP-10
- Series
- 資料獲取-數模轉換器（DAC）
Replacement verdict
Not a drop-in replacement
The AD5321BRMZ and AD5324ARMZ are not drop-in replacements for each other. The AD5321BRMZ is a single-channel 12-bit DAC in an MSOP-8 package, while the AD5324ARMZ is a quad-channel 12-bit DAC in an MSOP-10 package. They differ in channel count, package footprint, pin configuration, and digital interface architecture, requiring a complete PCB redesign and firmware modification for substitution.
Different channel count
Different footprint
Different pin configuration
Different interface architecture
Parts at a glance
Part B
AD5321BRMZ
ADI公司
- Lifecycle
- Active
- Stock
- 3782 件
- Package
- MSOP-8
- Series
- 資料獲取-數模轉換器（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 | AD5321BRMZ | AD5324ARMZ | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 1 | 4 | Determines how many independent analog outputs are available; a single-channel part cannot replace a quad-channel part in multi-output designs. |
| Resolution | 12 bits | 12 bits | Both provide 12-bit resolution, so output granularity and setpoint accuracy are equivalent. |
| Interface Type | I2C (2-wire) | SPI (3-wire) | The digital communication protocol must match the host controller; I2C and SPI are not directly interchangeable without a bus change. |
| Package | 8-lead MSOP | 10-lead MSOP | Different pin counts and footprints affect PCB layout and may prevent drop-in replacement. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Both operate over the same supply range, allowing use in similar low-voltage systems. |
| Output Type | Voltage output | Voltage output | Both provide buffered voltage outputs, so the signal type is compatible for most control applications. |
| Reference Input | External reference | External reference | Both require an external reference, so system accuracy depends on the same external reference design. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Identical temperature ratings mean both are suitable for industrial temperature environments. |
| Power-Down Capability | Yes | Yes | Both support power-down modes, which is important for low-power and battery-operated designs. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5324ARMZ | AD5321BRMZ |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 4 | 1 |
| Settling Time | 10µs | 10µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI, DSP | I²C |
| Reference Type | External | Supply |
| 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, ±0.3 |
| 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 AD5321BRMZ and AD5324ARMZ?
The AD5321BRMZ is a single-channel, 12-bit voltage-output DAC in a 10-lead MSOP package, while the AD5324ARMZ is a quad-channel, 12-bit voltage-output DAC in a 10-lead MSOP package. The AD5321BRMZ has one DAC output, whereas the AD5324ARMZ integrates four independent DAC outputs in the same package footprint.
Are the AD5321BRMZ and AD5324ARMZ pin-compatible?
No. Although both devices are offered in a 10-lead MSOP package, their pin functions differ. The AD5321BRMZ uses its pins for a single DAC output, reference input, and supply/ground, while the AD5324ARMZ uses its pins for four separate DAC outputs plus shared reference and supply pins. They are not direct pin-to-pin replacements.
What is the resolution and output type of both devices?
Both the AD5321BRMZ and AD5324ARMZ are 12-bit voltage-output digital-to-analog converters. Each provides a buffered voltage output capable of driving a load, with the output voltage determined by the digital code and the applied reference voltage.
What supply voltage range do the AD5321BRMZ and AD5324ARMZ support?
Both devices operate from a single 2.5 V to 5.5 V supply, as specified in the Analog Devices datasheets. This wide supply range allows operation from common 3.3 V and 5 V logic rails.
How do the AD5321BRMZ and AD5324ARMZ differ in channel count and application suitability?
The AD5321BRMZ provides one DAC channel, making it suitable for single-channel control loops, trim, or bias applications. The AD5324ARMZ provides four independent DAC channels in the same board area, making it suitable for multi-channel applications such as quad setpoint control, multi-axis trimming, or systems requiring multiple programmable voltages with minimal PCB space.
What digital interface do the AD5321BRMZ and AD5324ARMZ use?
Both devices use a 2-wire I2C-compatible serial interface. The AD5321BRMZ and AD5324ARMZ support standard and fast I2C modes, allowing connection to common microcontrollers and digital signal processors with two-wire buses.
Can the AD5321BRMZ be used as a drop-in replacement for the AD5324ARMZ in an existing design?
No. The AD5321BRMZ has one DAC channel and a different pin configuration than the AD5324ARMZ, which has four DAC channels. A drop-in replacement is not possible without redesigning the PCB layout, updating the control firmware for channel addressing, and verifying the reference and output loading requirements.
What are the package and operating temperature specifications for both devices?
Both the AD5321BRMZ and AD5324ARMZ are supplied in a 10-lead MSOP package and are specified for the industrial temperature range of −40°C to +105°C, as stated in their respective Analog Devices datasheets.