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 can serve as a functional replacement candidate for the AD5322BRMZ in single-channel 12-bit DAC applications, provided the system design accommodates the reduced channel count and the different digital interface protocol. Both devices share identical resolution, supply voltage range, and SOT-23 package footprint, but the AD5322BRMZ offers dual channels with a SPI interface while the AD5320BRM provides a single channel with an I2C-compatible interface. Designers must validate channel requirements and interface compatibility before substituting.
Resolution
High match
Channel Count
Not compatible
Digital Interface
Validation required
Package Type
High match
Parts at a glance
Part B
AD5322BRMZ
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 | AD5320BRM | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 2 | 1 | Determines how many independent analog outputs are available; a dual-channel DAC cannot be directly substituted by a single-channel device in multi-output designs. |
| Resolution | 12 bits | 12 bits | Both provide 12-bit resolution, so output granularity and quantization error are equivalent. |
| 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. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.7 V to 5.5 V | The slightly wider lower bound of the AD5322BRMZ permits operation at 2.5 V, which may matter in low-voltage systems. |
| Reference Type | External | External | Both require an external reference, so the same reference source and decoupling scheme can be reused. |
| Output Type | Voltage, buffered | Voltage, buffered | Buffered voltage outputs simplify load driving and are functionally interchangeable at the output stage. |
| Package | 10-Lead MSOP | 8-Lead MSOP | Different pin counts and footprints prevent drop-in PCB replacement without layout changes. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Identical temperature ratings mean both are suitable for the same industrial and extended-temperature environments. |
| Power-Down Capability | Yes | Yes | Both support power-down modes, enabling similar low-power system behavior. |
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 | AD5322BRMZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 1 | 2 |
| 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 main differences between the AD5322BRMZ and the AD5320BRM?
The AD5322BRMZ is a dual-channel, 12-bit voltage-output DAC with an SPI-compatible serial interface, while the AD5320BRM is a single-channel, 12-bit voltage-output DAC with a similar serial interface. The AD5322BRMZ provides two independent DAC outputs in a 10-lead MSOP package, whereas the AD5320BRM provides one DAC output in an 8-lead MSOP package.
Are the AD5322BRMZ and AD5320BRM pin-compatible?
No. The AD5322BRMZ is supplied in a 10-lead MSOP package, and the AD5320BRM is supplied in an 8-lead MSOP package. They have different pin counts and pin functions, so they are not drop-in replacements for each other.
Do the AD5322BRMZ and AD5320BRM have the same resolution and DAC architecture?
Yes. Both devices are 12-bit, voltage-output, string DACs. Each provides a buffered output capable of driving a load to the supply rails, and both use an external reference input to set the full-scale output voltage.
Can the AD5322BRMZ and AD5320BRM operate from the same supply voltage range?
Yes. Both devices are specified for operation from a single 2.5 V to 5.5 V supply. This makes them suitable for low-power, single-supply applications in portable instrumentation and industrial control systems.
What serial interface do the AD5322BRMZ and AD5320BRM use?
Both devices use a 3-wire SPI-compatible serial interface. The interface operates at clock rates up to 30 MHz and is compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards.
How does power consumption compare between the AD5322BRMZ and AD5320BRM?
Both devices are designed for low-power operation. The AD5320BRM typically consumes 140 µA at 5 V, while the AD5322BRMZ typically consumes 300 µA at 5 V because it contains two DAC channels. Actual current depends on supply voltage, update rate, and output loading.
Do the AD5322BRMZ and AD5320BRM include a power-on reset circuit?
Yes. Both devices incorporate a power-on reset circuit that ensures the DAC output powers up to 0 V and remains there until a valid write takes place. This prevents unwanted output transients during system power-up.
What are the typical applications for the AD5322BRMZ versus the AD5320BRM?
The AD5322BRMZ is typically used where two independent DAC channels are required in a compact footprint, such as dual-channel setpoint control or offset/gain adjustment. The AD5320BRM is typically used in single-channel applications where only one analog output is needed, such as portable instrumentation, digital gain and offset adjustment, and programmable voltage sources.