Part A
AD5320BRM
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4780 Stückzahl
- Package
- MSOP-8
- Series
- Data Acquisition von Digital to Analog Converters (DAC)
Replacement verdict
Not a drop-in replacement
The AD5324BRMZ and AD5320BRM are not drop-in replacements for each other. The AD5324BRMZ is a quad 12-bit DAC with a serial interface and internal reference, while the AD5320BRM is a single 12-bit DAC with a different pinout and package. They differ in channel count, package type, pin configuration, and reference architecture, making direct substitution impossible without redesign.
Different channel count
Different package type
Different pin configuration
Different reference architecture
Parts at a glance
Part B
AD5324BRMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6981 Stückzahl
- Package
- MSOP-10
- Series
- Data Acquisition von 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 | AD5324BRMZ | AD5320BRM | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 1 | Determines how many independent analog outputs are available; a 4-channel device cannot be directly substituted where a single-channel device is required without redesign. |
| Resolution | 12 bit | 12 bit | Both provide 12-bit resolution, so output granularity and quantization error are equivalent. |
| Interface Type | SPI / DSP compatible serial | SPI / QSPI / MICROWIRE / DSP compatible serial | Interface compatibility affects whether the part can be driven by the existing host controller without firmware or wiring changes. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.7 V to 5.5 V | The minimum supply voltage differs slightly; operation below 2.7 V is possible with the AD5324BRMZ but not guaranteed with the AD5320BRM. |
| Reference Type | External | External | Both require an external reference, so the same reference source and decoupling scheme can generally be reused. |
| Output Type | Voltage output | Voltage output | Both provide voltage-mode outputs, so the downstream signal conditioning can remain the same. |
| Package | 10-Lead MSOP | 8-Lead MSOP | Different pin counts and footprints prevent direct drop-in replacement on the same PCB pad layout. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Identical temperature ratings mean both are suitable for the same industrial temperature environments. |
| INL (Integral Nonlinearity) | ±1 LSB max | ±1 LSB max | Equivalent linearity performance ensures comparable accuracy in precision control loops. |
| Power-Down Capability | Yes | Yes | Both support power-down modes, allowing similar low-power system behavior. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5320BRM | AD5324BRMZ |
|---|---|---|
| Part Status | Obsolete | Active |
| 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 AD5324BRMZ and the AD5320BRM?
The AD5324BRMZ is a quad 12-bit voltage-output DAC with an SPI interface, while the AD5320BRM is a single 12-bit voltage-output DAC with an SPI interface. The AD5324BRMZ provides four independent DAC channels in a 10-lead MSOP package, whereas the AD5320BRM provides one DAC channel in an 8-lead MSOP package.
Are the AD5324BRMZ and AD5320BRM pin-compatible?
No. The AD5324BRMZ 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 pin-compatible and cannot be used as drop-in replacements for each other.
Do the AD5324BRMZ and AD5320BRM have the same resolution and DAC architecture?
Yes. Both devices are 12-bit voltage-output DACs. The AD5324BRMZ integrates four 12-bit DACs, while the AD5320BRM integrates a single 12-bit DAC. Both use a resistor-string architecture and provide a voltage output.
What serial interface do the AD5324BRMZ and AD5320BRM use?
Both devices use a serial peripheral interface (SPI) compatible interface. The AD5324BRMZ supports SPI, QSPI, MICROWIRE, and DSP interface standards. The AD5320BRM also supports SPI, QSPI, MICROWIRE, and DSP interface standards. The AD5324BRMZ requires a 16-bit write cycle for updating its four DAC channels, while the AD5320BRM uses a 16-bit write cycle for its single DAC channel.
Can the AD5324BRMZ and AD5320BRM operate from the same supply voltage range?
Yes. Both devices operate from a single 2.5 V to 5.5 V supply. The AD5324BRMZ and AD5320BRM both feature a power-on reset to zero scale and a power-down mode that reduces current consumption to typically 0.2 µA at 5 V.
What are the reference voltage requirements for the AD5324BRMZ and AD5320BRM?
Both devices require an external reference voltage. The AD5324BRMZ has a reference input range of 0.25 V to VDD. The AD5320BRM has a reference input range of 0.25 V to VDD. The output voltage swing for both devices is 0 V to VREF.
What are the operating temperature ranges for the AD5324BRMZ and AD5320BRM?
Both the AD5324BRMZ and AD5320BRM are specified for operation over the industrial temperature range of −40°C to +105°C.
Are the AD5324BRMZ and AD5320BRM RoHS compliant?
Yes. Both the AD5324BRMZ and AD5320BRM are RoHS-compliant devices. The AD5324BRMZ is a lead-free package designated by the "Z" suffix in the part number. The AD5320BRM is also available in a lead-free version; however, the specific ordering suffix should be verified with the manufacturer's datasheet or product page to confirm RoHS compliance for the exact orderable part number.