Part A
AD5322BRM
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2754 PCS
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5320BRM and AD5322BRM share the same 12-bit DAC resolution, 8-pin MSOP package, and 2.7 V to 5.5 V supply range, making them functionally related candidates. However, the AD5320BRM is a single-channel voltage-output DAC, while the AD5322BRM is a dual-channel voltage-output DAC, so the AD5322BRM can serve as a higher-density substitute only when the additional channel is acceptable and the board layout accommodates the same footprint. Designers should validate channel count requirements, reference configuration, and interface timing before committing to a drop-in replacement.
Channel Count
Validation required
Resolution
High match
Package Type
High match
Supply Voltage
High match
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 | AD5322BRM | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 1 | 2 | Determines how many independent analog outputs are available; a single-channel part cannot replace a dual-channel part 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 | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Identical supply range means both can operate from the same system rail without level shifting or regulator changes. |
| Output Voltage Range | 0 V to VREF | 0 V to VREF | Same output span relative to the reference, so signal scaling in the analog chain remains unchanged. |
| Reference Input | External reference | External reference | Both require an external reference, so the same reference source and decoupling can be reused. |
| Package | 8-Lead MSOP | 10-Lead MSOP | Different pin counts and footprints affect PCB layout and may prevent a direct drop-in replacement. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Equivalent temperature ratings ensure both parts suit the same industrial and automotive environments. |
| Power-Down Capability | Yes | Yes | Both support power-down modes, allowing low-power system states without additional circuitry. |
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 | AD5320BRM |
|---|---|---|
| Part Status | Obsolete | Obsolete |
| 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 AD5320BRM and AD5322BRM?
The AD5320BRM is a single-channel, 12-bit voltage-output DAC in an 8-lead MSOP package, while the AD5322BRM is a dual-channel, 12-bit voltage-output DAC in a 10-lead MSOP package. The AD5322BRM provides two independent DAC outputs in one device, whereas the AD5320BRM provides only one.
Are the AD5320BRM and AD5322BRM pin-compatible?
No. The AD5320BRM uses an 8-lead MSOP package, and the AD5322BRM uses a 10-lead MSOP package. They have different pin counts and pinouts, so they are not drop-in replacements on the same PCB footprint.
Do the AD5320BRM and AD5322BRM have the same resolution and DAC architecture?
Yes. Both are 12-bit, voltage-output, string DACs. Each provides 12-bit resolution with a typical integral nonlinearity (INL) of ±1 LSB and a typical differential nonlinearity (DNL) of ±0.2 LSB, as specified in the Analog Devices datasheets.
What is the supply voltage range for the AD5320BRM and AD5322BRM?
Both devices operate from a single 2.7 V to 5.5 V supply, per the Analog Devices datasheets. This makes them suitable for 3 V and 5 V systems.
How do the AD5320BRM and AD5322BRM differ in power consumption?
The AD5320BRM typically consumes 140 µA at 3 V and 170 µA at 5 V. The AD5322BRM typically consumes 230 µA at 3 V and 300 µA at 5 V, reflecting its dual-channel architecture. Both offer power-down modes that reduce current to typically less than 1 µA.
What serial interface do the AD5320BRM and AD5322BRM 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 AD5322BRM supports clock rates up to 30 MHz as well, according to the Analog Devices datasheets.
Can the AD5320BRM and AD5322BRM operate with the same external reference?
Both devices use the supply voltage as the reference by default, but they also support an external reference. The AD5320BRM has a reference input range of 0.5 V to VDD, and the AD5322BRM has a reference input range of 0.5 V to VDD. The output voltage spans from 0 V to VREF for both.
What are the operating temperature ranges for the AD5320BRM and AD5322BRM?
Both the AD5320BRM and AD5322BRM are specified over the industrial temperature range of −40°C to +105°C, as stated in the Analog Devices datasheets.
Are the AD5320BRM and AD5322BRM available in the same package options?
No. The AD5320BRM is offered in an 8-lead MSOP (RM suffix), and the AD5322BRM is offered in a 10-lead MSOP (RM suffix). The AD5322BRM is also available in a 10-lead LFCSP, while the AD5320BRM is not offered in LFCSP.