Part A
AD5544BRSZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7094 PCS
- Package
- SSOP-28
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5544ARSZ and AD5544BRSZ are functionally equivalent quad 16-bit current-output DACs from Analog Devices, sharing the same architecture, resolution, channel count, and serial interface. Both parts are specified over the industrial temperature range and are available in the same 28-lead SSOP package, making them interchangeable in most designs. The primary distinction lies in specified accuracy grades and linearity performance, so the AD5544BRSZ can serve as a drop-in replacement for the AD5544ARSZ provided the application's DNL, INL, and gain error budgets are validated against the B-grade specifications.
Resolution and Channel Count
High match
Package Type
High match
Digital Interface
High match
Accuracy Grade
Validation required
Parts at a glance
Part B
AD5544ARSZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5520 PCS
- Package
- SSOP-28
- Series
- Data Acquisition - 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 | AD5544ARSZ | AD5544BRSZ | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Determines the smallest output step and achievable precision; identical resolution means equivalent quantization granularity. |
| Number of DAC Channels | 4 | 4 | Channel count must match for pin-compatible and functional replacement in multi-channel designs. |
| DAC Architecture | R-2R current output | R-2R current output | Architecture affects settling behavior, output configuration, and external op-amp requirements. |
| Interface Type | SPI / Serial | SPI / Serial | Interface compatibility ensures the same host controller and firmware can drive either device. |
| Supply Voltage (Analog) | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Supply range must overlap with the system rail to allow direct substitution without power redesign. |
| Reference Input Range | ±10 V | ±10 V | Determines the full-scale output span and compatibility with the existing reference source. |
| INL (Integral Nonlinearity) | ±1 LSB | ±1 LSB | INL defines absolute accuracy of the transfer function; matching values preserve system accuracy budget. |
| DNL (Differential Nonlinearity) | ±1 LSB | ±1 LSB | DNL guarantees monotonicity; identical DNL ensures no missing codes in either variant. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range must cover the application environment for reliable operation. |
| Package / Mounting | 28-Lead SSOP | 28-Lead SSOP | Package and footprint compatibility allow drop-in replacement on the same PCB land pattern. |
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 | AD5544BRSZ | AD5544ARSZ |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 16 | 16 |
| Number of D/A Converters | 4 | 4 |
| Settling Time | 900ns (Typ) | 900ns (Typ) |
| Output Type | Current - Unbuffered | Current - Unbuffered |
| Differential Output | No | No |
| Data Interface | SPI | SPI |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| INL / DNL(LSB) | ±1 (Max), ±1 (Max) | ±2 (Max), ±1.5 (Max) |
| Architecture | R-2R | R-2R |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
Frequently asked questions
What are the key differences between the AD5544ARSZ and AD5544BRSZ?
The AD5544ARSZ and AD5544BRSZ are both quad, 16-bit, current-output digital-to-analog converters from Analog Devices. The primary difference is the specified integral nonlinearity (INL) grade: the AD5544ARSZ offers ±1 LSB INL, while the AD5544BRSZ offers ±2 LSB INL. Both are packaged in a 28-lead SSOP and share the same pinout and functional architecture.
Are the AD5544ARSZ and AD5544BRSZ pin-compatible and package-compatible?
Yes. Both devices are offered in the same 28-lead SSOP (RS-28) package with identical pin assignments, allowing them to share the same PCB footprint and land pattern.
Can the AD5544ARSZ and AD5544BRSZ be used interchangeably in an existing design?
In many designs they can be interchanged because they share the same package, pinout, resolution, and interface. However, the AD5544BRSZ has a wider INL specification (±2 LSB vs ±1 LSB), so designs requiring the tighter ±1 LSB accuracy must use the AD5544ARSZ. Always verify the accuracy budget against the target application.
What is the resolution and number of DAC channels for both devices?
Both the AD5544ARSZ and AD5544BRSZ are quad-channel, 16-bit DACs, providing four independent current-output DACs in a single package.
What digital interface do the AD5544ARSZ and AD5544BRSZ use?
Both devices use a serial SPI-compatible interface. They support a 3-wire or 4-wire serial interface with a maximum update rate suitable for precision control applications.
What is the operating temperature range for the AD5544ARSZ and AD5544BRSZ?
Both devices are specified for the industrial temperature range of −40°C to +85°C, making them suitable for industrial and instrumentation applications.
Do the AD5544ARSZ and AD5544BRSZ require an external reference?
Yes. Both devices require an external voltage reference. The reference input voltage determines the full-scale output current of each DAC channel.
What is the supply voltage requirement for the AD5544ARSZ and AD5544BRSZ?
Both devices operate from a single +2.7 V to +5.5 V supply for the digital and analog sections, with a separate VDD supply for the output amplifiers if used. Consult the official Analog Devices datasheet for the complete supply and biasing requirements.