Part A
AD5322BRMZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1406 PCS
- Package
- MSOP-10
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5322BRMZ and AD5322ARM are functionally equivalent dual 12-bit DACs sharing the same architecture, resolution, channel count, and interface. The AD5322ARM is a valid functional replacement candidate for the AD5322BRMZ, provided the application tolerates the narrower specified operating temperature range of the A-grade version.
Resolution
High match
Channel Count
High match
Interface Type
High match
Operating Temperature Range
Validation required
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 | AD5322ARM | Why it matters |
|---|---|---|---|
| Operating Temperature Range | -40°C to +105°C | -40°C to +85°C | The wider temperature range of the BRMZ version allows operation in more demanding industrial environments, while the ARM version is limited to commercial temperature ranges. |
| Package / Case | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | Both devices use the same MSOP-10 package footprint, ensuring physical interchangeability on a PCB. |
| Resolution | 12 bit | 12 bit | Identical resolution means both DACs provide the same level of analog output precision for the application. |
| Number of D/A Converters | 2 | 2 | Both are dual-channel DACs, allowing two independent analog outputs from a single device. |
| Interface Type | SPI, DSP | SPI, DSP | The serial interface compatibility ensures both parts can be driven by the same digital controller without protocol changes. |
| Voltage - Supply, Analog | 2.5V ~ 5.5V | 2.5V ~ 5.5V | Matching analog supply ranges allow both DACs to operate from the same power rail in a given design. |
| Voltage - Supply, Digital | 2.5V ~ 5.5V | 2.5V ~ 5.5V | Identical digital supply requirements ensure direct compatibility with the same logic-level interface circuitry. |
| INL/DNL (Max) | ±2 LSB (Max) | ±2 LSB (Max) | Equivalent linearity specifications indicate comparable accuracy performance between the two grades. |
| Settling Time | 10 µs | 10 µs | Same settling time means both DACs respond at the same speed for control-loop or waveform-generation applications. |
| Reference Type | External | External | Both require an external reference, so the same reference circuit can be used for either part. |
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 | AD5322BRMZ | AD5322ARM |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 2 | 2 |
| Settling Time | 10µs | 10µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI, DSP | SPI, DSP |
| Reference Type | External | External |
| 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, ±0.2 |
| Architecture | String DAC | String DAC |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What is the difference between the AD5322BRMZ and the AD5322ARM?
The AD5322BRMZ and AD5322ARM are both dual 12-bit DACs from Analog Devices, but they differ in specified performance grades. The AD5322BRMZ is the B-grade version in a 10-lead MSOP (RM-10) package, while the AD5322ARM is the A-grade version in the same 10-lead MSOP package. The B-grade offers tighter accuracy specifications, including lower INL and DNL errors, compared with the A-grade.
Are the AD5322BRMZ and AD5322ARM pin-compatible?
Yes. Both the AD5322BRMZ and AD5322ARM are offered in the same 10-lead MSOP package and share the same pinout. This allows them to be used on the same PCB land pattern, although the electrical performance grade differs.
What is the resolution and number of DAC channels for these devices?
Both the AD5322BRMZ and AD5322ARM are dual-channel, 12-bit voltage-output digital-to-analog converters. Each device integrates two independent DACs with a 12-bit resolution.
What supply voltage range do the AD5322BRMZ and AD5322ARM support?
Both devices operate from a single 2.5 V to 5.5 V supply. The reference input range and output voltage span depend on the applied reference and supply configuration, as specified in the Analog Devices AD5322 datasheet.
What interface do the AD5322BRMZ and AD5322ARM use for communication?
Both parts use a standard 2-wire I2C-compatible serial interface. They support standard (100 kHz), fast (400 kHz), and high-speed (3.4 MHz) I2C modes, allowing multiple devices to be connected on the same bus via address selection.
Can the AD5322ARM be used as a drop-in replacement for the AD5322BRMZ?
Because both devices share the same package, pinout, and I2C interface, the AD5322ARM can be placed on a board designed for the AD5322BRMZ. However, the A-grade has wider accuracy tolerances than the B-grade, so the system must be validated to ensure the A-grade specifications meet the design requirements.
What are the operating temperature ranges for these DACs?
Both the AD5322BRMZ and AD5322ARM are specified for the industrial temperature range of −40°C to +105°C, as stated in the Analog Devices AD5322 datasheet.
Do the AD5322BRMZ and AD5322ARM include an internal reference?
No. Both the AD5322BRMZ and AD5322ARM require an external reference voltage applied to the VREF pin. They do not integrate an internal voltage reference, so the output accuracy and range depend on the external reference source.