Part A
AD5325BRMZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 6584 PCS
- Package
- MSOP-10
- Series
- Acquisition de données - convertisseur numérique - analogique (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5321BRMZ and AD5325BRMZ share the same 12-bit DAC resolution, 8-MSOP package, and I²C interface, making the AD5325BRMZ a viable functional replacement candidate for the AD5321BRMZ in many designs. However, the AD5325BRMZ integrates four DAC channels versus the single channel of the AD5321BRMZ, so designers must validate channel count requirements, reference configuration, and board-level pin utilization before substituting.
Resolution
High match
Package Type
High match
Interface Type
High match
Channel Count
Validation required
Parts at a glance
Part B
AD5321BRMZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 3782 PCS
- Package
- MSOP-8
- Series
- Acquisition de données - convertisseur numérique - analogique (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 | AD5325BRMZ | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 1 | 4 | Determines how many independent analog outputs are available; a single-channel part cannot replace a multi-channel part in systems needing multiple setpoints. |
| Resolution | 12 bits | 12 bits | Both provide 12-bit resolution, so output granularity and quantization error are equivalent. |
| Interface Type | I2C (2-wire) | I2C (2-wire) | Both use I2C, allowing similar host controller connections and firmware protocol handling. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Identical supply range supports the same low-voltage and standard 5 V logic systems. |
| Output Voltage Range | 0 V to VREF | 0 V to VREF | Both provide rail-to-rail referenced output span, so dynamic range is set by the external reference in either case. |
| Reference Input | External | External | Both require an external reference, so accuracy and temperature drift depend on the same external reference design. |
| Package | 8-Lead MSOP | 10-Lead MSOP | Different package pin counts and footprints affect PCB layout and may prevent drop-in replacement without board revision. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Identical industrial temperature range means both are suitable for the same harsh environments. |
| Power-On Reset | To zero scale | To zero scale | Both power up with outputs at zero scale, ensuring predictable startup behavior in safety-critical systems. |
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 | AD5325BRMZ | 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 | I²C | 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 AD5325BRMZ?
The AD5321BRMZ is a single-channel, 12-bit voltage-output DAC in a 10-lead MSOP package, while the AD5325BRMZ is a quad-channel, 12-bit voltage-output DAC in a 10-lead MSOP package. The AD5325 integrates four DACs in the same package footprint, whereas the AD5321 provides one DAC channel.
Are the AD5321BRMZ and AD5325BRMZ pin-compatible?
No. Although both devices are offered in a 10-lead MSOP (RM) package, their pin functions differ because the AD5325 provides four DAC outputs and the AD5321 provides one. The pinout must be verified against the respective manufacturer datasheets before considering any layout reuse.
Do the AD5321BRMZ and AD5325BRMZ have the same resolution and DAC architecture?
Yes. Both are 12-bit voltage-output DACs with a resistor-string architecture and an on-chip output amplifier capable of rail-to-rail output swing. Both operate from a single 2.5 V to 5.5 V supply.
Can the AD5321BRMZ and AD5325BRMZ share the same reference configuration?
Both devices support an external reference input and also provide an internal reference option. The reference input range and the internal reference voltage are specified in the respective datasheets, and the reference configuration must be validated for each device in the target design.
What serial interface do the AD5321BRMZ and AD5325BRMZ use?
Both devices use a 2-wire I2C-compatible serial interface. The AD5325BRMZ supports addressing for multiple devices on the same bus, while the AD5321BRMZ is a single-channel device with its own address options as specified in the datasheet.
Are the AD5321BRMZ and AD5325BRMZ interchangeable in an existing design?
No. They are not direct substitutes because they differ in channel count, pinout, and internal register mapping. Any replacement requires a full review of the schematic, PCB layout, firmware, and timing against the manufacturer datasheets.
What are the operating temperature ranges for the AD5321BRMZ and AD5325BRMZ?
Both devices are specified for the industrial temperature range of −40°C to +105°C, as stated in the Analog Devices datasheets for the B grade in the RM package.
Do the AD5321BRMZ and AD5325BRMZ have the same package and moisture sensitivity level?
Both are supplied in a 10-lead MSOP package. The moisture sensitivity level and packaging details are specified in the manufacturer datasheet and should be confirmed from the official Analog Devices documentation for each orderable part number.