Part A
AD5322BRM
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2754 PCS
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Replacement verdict
Not a drop-in replacement
The AD5320BRMZ and AD5322BRM are not drop-in replacements for each other. Although both are 12-bit DACs from Analog Devices in MSOP-8 packages, they differ fundamentally in channel count, digital interface protocol, and reference architecture. The AD5320BRMZ is a single-channel device with a 3-wire SPI-compatible interface and internal reference, while the AD5322BRM is a dual-channel device with an I2C-compatible interface and external reference requirement. These differences in channel count, interface type, and reference configuration make direct substitution impossible without circuit redesign.
Different channel count
Different interface protocol
Different reference architecture
Different pin configuration
Parts at a glance
Part B
AD5320BRMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3563 PCS
- Package
- MSOP-8
- Series
- Acquisição de dados - Convertedores digitais para analógicos (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 | AD5320BRMZ | AD5322BRM | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 1 | 2 | Determines how many independent analog outputs are available; a single-channel device cannot replace a dual-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 | Serial interface compatibility affects whether the part can be dropped into an existing digital bus without protocol changes. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.5 V to 5.5 V | The wider lower bound of the AD5322BRM allows operation in lower-voltage systems, while both support common 3 V and 5 V rails. |
| Reference Type | External | External | Both require an external reference, so the system must provide a stable reference voltage for accurate output. |
| Output Type | Voltage output | Voltage output | Both provide voltage-mode outputs, matching applications that expect a buffered voltage rather than current output. |
| Package | 8-Lead MSOP | 10-Lead MSOP | Different package sizes and pin counts affect PCB footprint and layout compatibility for direct substitution. |
| 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, which is important for low-power and battery-operated 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 | AD5322BRM | AD5320BRMZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Base Product Number | AD5322 | - |
| Number of Bits | 12 | 12 |
| Number of D / A Converters | 2 | - |
| Settling Time | 10µs | 10µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI, DSP | SPI, DSP |
| Reference Type | External | Supply |
| Voltage - Supply, Analog | 2.5V ~ 5.5V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 2.5V ~ 5.5V | 2.7V ~ 5.5V |
| INL / DNL (LSB) | ±2, ±0.2 | - |
| Architecture | String DAC | String DAC |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
| Mounting Type | Surface Mount | - |
| Packaging | Tube | - |
| Number of D/A Converters | - | 1 |
| INL / DNL(LSB) | - | ±16 (Max), ±1 (Max) |
Frequently asked questions
What are the key differences between the AD5320BRMZ and AD5322BRM?
The AD5320BRMZ is a single-channel, 12-bit voltage-output DAC in a 10-lead MSOP package, while the AD5322BRM is a dual-channel, 12-bit voltage-output DAC in a 10-lead MSOP package. The AD5320BRMZ provides one DAC output, whereas the AD5322BRM provides two independent DAC outputs in the same package footprint.
Are the AD5320BRMZ and AD5322BRM pin-compatible?
No. Although both devices are offered in a 10-lead MSOP package, their pin functions differ because the AD5322BRM includes two DAC outputs and associated reference and control pins. The AD5320BRMZ has a single DAC output and a different pin assignment. They are not direct pin-to-pin replacements.
What is the resolution and architecture of these DACs?
Both the AD5320BRMZ and AD5322BRM are 12-bit, string DAC architecture, voltage-output digital-to-analog converters. They provide 12-bit monotonic performance over the specified operating temperature range.
What supply voltage and reference configuration do these devices require?
Both devices operate from a single 2.5 V to 5.5 V supply. The AD5320BRMZ uses the supply voltage as the reference, providing a full-scale output equal to VDD. The AD5322BRM also uses VDD as the reference for both DAC channels, with each channel having its own output amplifier.
What is the interface type for the AD5320BRMZ and AD5322BRM?
Both devices use a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. The interface operates at clock rates up to 30 MHz for the AD5320BRMZ and AD5322BRM, allowing high-speed data transfer.
Can the AD5320BRMZ be used as a drop-in replacement for the AD5322BRM in an existing dual-channel design?
No. The AD5320BRMZ is a single-channel DAC and cannot replace the dual-channel AD5322BRM without significant redesign. The AD5322BRM provides two independent DAC outputs, while the AD5320BRMZ provides only one. A dual-channel design would require two AD5320BRMZ devices or a different dual-channel DAC.
What are the package and operating temperature range specifications?
Both the AD5320BRMZ and AD5322BRM are available in a 10-lead MSOP package. The operating temperature range for both devices is -40°C to +105°C, making them suitable for industrial and automotive applications.
What are the power-on reset and power-down features of these DACs?
Both the AD5320BRMZ and AD5322BRM include a power-on reset circuit that ensures the DAC output powers up to 0 V and remains there until a valid write takes place. They also feature a power-down mode that reduces current consumption to typically 200 nA at 5 V, with selectable output impedance states of 1 kΩ, 100 kΩ, or high impedance.