Part A
AD5320BRM
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4780 PCS
- Package
- MSOP-8
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5320BRM and AD5324ARM share a compatible SPI interface, 12-bit DAC resolution, and similar SOT-23 style packaging, making the AD5324ARM a viable functional candidate in space-constrained designs where its additional channels can be left unused or repurposed. However, the AD5324ARM requires careful validation of its external reference architecture and channel configuration before adoption as a direct substitute.
Resolution
High match
Interface Type
High match
Reference Architecture
Validation required
Channel Count
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 | AD5320BRM | AD5324ARM | 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 | Sets the output voltage step size and achievable precision; matching resolution is essential for equivalent accuracy. |
| Interface Type | SPI / QSPI / MICROWIRE compatible | SPI / QSPI / MICROWIRE / DSP compatible | The digital communication protocol must match the host controller for the device to be driven correctly. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.5 V to 5.5 V | Defines the allowable power supply window; a narrower or shifted range can limit compatibility with existing rails. |
| Package Type | 8-lead MSOP | 10-lead MSOP | Physical footprint and pin count must match the PCB layout for a drop-in replacement. |
| Reference Type | External reference | External reference | Determines whether an internal or external voltage reference is required, affecting accuracy and board design. |
| Output Type | Voltage output | Voltage output | Voltage versus current output must match the load and signal chain requirements. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +125 °C | Affects suitability for industrial or automotive environments with extreme thermal conditions. |
| INL (Integral Nonlinearity) | ±16 LSB max | ±16 LSB max | Indicates worst-case deviation from ideal transfer function, directly impacting output accuracy. |
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 | AD5320BRM | AD5324ARM |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Obsolete | Obsolete |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 1 | 4 |
| Settling Time | 10µs | 10µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI, DSP | SPI, DSP |
| Reference Type | Supply | External |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.5V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.5V ~ 5.5V |
| INL / DNL(LSB) | ±16 (Max), ±1 (Max) | ±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 AD5320BRM and AD5324ARM?
The AD5320BRM is a single-channel, 12-bit voltage-output DAC in an 8-lead MSOP package, while the AD5324ARM is a quad-channel, 12-bit voltage-output DAC in a 10-lead MSOP package. The AD5320BRM offers a single DAC with a serial interface, whereas the AD5324ARM integrates four DACs with a serial interface and internal reference options.
Are the AD5320BRM and AD5324ARM pin-compatible?
No. The AD5320BRM is supplied in an 8-lead MSOP package, and the AD5324ARM is supplied in a 10-lead MSOP package. They have different pin counts and pin functions, so they are not pin-compatible and cannot be interchanged without PCB redesign.
Can the AD5320BRM and AD5324ARM operate from the same supply voltage?
Yes. Both devices are specified for operation from a single 2.7 V to 5.5 V supply, making them compatible with common 3 V and 5 V logic systems.
Do both the AD5320BRM and AD5324ARM have an internal reference?
No. The AD5320BRM does not include an internal reference and requires an external reference voltage. The AD5324ARM includes an on-chip reference that can be enabled or disabled, and it can also be operated with an external reference.
What is the resolution and output type of the AD5320BRM and AD5324ARM?
Both devices are 12-bit voltage-output DACs. The AD5320BRM provides one 12-bit DAC output, while the AD5324ARM provides four independent 12-bit DAC outputs.
What serial interface do the AD5320BRM and AD5324ARM use?
Both devices use a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. The AD5320BRM supports clock rates up to 30 MHz, and the AD5324ARM supports clock rates up to 30 MHz as well.
Are the AD5320BRM and AD5324ARM suitable for the same applications?
They serve different channel-count requirements. The AD5320BRM is suited for single-channel applications such as digital gain and offset adjustment, while the AD5324ARM is suited for multi-channel applications such as process control, portable instrumentation, and closed-loop servo control where four DAC outputs are needed.
What are the operating temperature ranges for the AD5320BRM and AD5324ARM?
Both the AD5320BRM and AD5324ARM are specified for the industrial temperature range of −40°C to +105°C.