Part A
AD5444YRMZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1980 PCS
- Package
- MSOP-10
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5444YRMZ and AD5443YRM are functionally compatible 12-bit current-output DACs from the same Analog Devices AD544x family, sharing an identical MSOP-10 footprint and pinout. The AD5444YRMZ offers a faster serial interface and higher update rate, making it a viable drop-in candidate for the AD5443YRM in most designs, provided the system timing budget accommodates the interface speed difference. Engineers should validate the reference input configuration and digital interface timing against their specific application requirements before committing to the substitution.
Resolution
High match
Package Type
High match
Interface Speed
Validation required
Reference Input
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 | AD5444YRMZ | AD5443YRM | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Resolution determines the smallest output step; both are 12-bit, so they offer the same nominal granularity. |
| Number of DAC Channels | 1 | 1 | Channel count must match the system architecture; both are single-channel DACs. |
| Interface Type | SPI, QSPI, MICROWIRE, DSP compatible | SPI, QSPI, MICROWIRE, DSP compatible | The digital interface must be compatible with the host controller for direct substitution. |
| Supply Voltage (Analog) | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Analog supply range affects output swing and compatibility with the surrounding analog circuitry. |
| Supply Voltage (Digital) | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Digital supply range must match the logic levels of the controlling device. |
| Reference Input Range | ±10 V | ±10 V | Reference input range sets the maximum output span and must be compatible with the system reference source. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Temperature range determines suitability for industrial and automotive environments. |
| Package / Case | 10-TFSOP, 10-MSOP | 10-TFSOP, 10-MSOP | Package and footprint must match for a drop-in replacement on an existing PCB. |
| INL (Integral Nonlinearity) | ±1 LSB | ±1 LSB | INL defines static accuracy; matching values ensure equivalent precision in the target application. |
| Power Dissipation | 0.5 µW (typical, at 5 V) | 0.5 µW (typical, at 5 V) | Power consumption affects thermal design and battery life in portable systems. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5444YRMZ | AD5443YRM |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 1 | 1 |
| Settling Time | 110ns | 160ns |
| Output Type | Current - Unbuffered | Current - Unbuffered |
| Differential Output | Yes | Yes |
| 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) | ±0.5 (Max), ±1 (Max) | ±1 (Max), -1/+2 (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 AD5444YRMZ and the AD5443YRM?
The AD5444YRMZ is a 12-bit current-output digital-to-analog converter (DAC), while the AD5443YRM is a 12-bit DAC with a different interface and package option. The AD5444YRMZ offers a 10-pin MSOP package and a serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. The AD5443YRM is a 10-pin MSOP device with a parallel interface. Both are members of the AD544x family and share similar DAC architecture, but they differ in digital interface type and timing specifications.
Are the AD5444YRMZ and AD5443YRM pin-compatible?
No. The AD5444YRMZ uses a serial interface with a 10-lead MSOP package, while the AD5443YRM uses a parallel interface with a 10-lead MSOP package. Although the package footprint may be similar, the pin functions differ due to the different digital interface schemes. Direct PCB substitution is not possible without redesigning the digital interface connections.
What is the resolution and accuracy of these DACs?
Both the AD5444YRMZ and AD5443YRM are 12-bit DACs. They offer relative accuracy (INL) of ±1 LSB maximum and differential nonlinearity (DNL) of ±1 LSB maximum, ensuring monotonicity over the specified temperature range. These specifications are typical for the AD544x family and are verified in the manufacturer datasheets.
What are the supply voltage and reference input requirements for the AD5444YRMZ and AD5443YRM?
Both devices operate from a single 2.5 V to 5.5 V supply for the digital section and a separate 2.5 V to 5.5 V supply for the analog section, allowing flexible interfacing. The reference input voltage range is typically 0 V to VDD, and the devices accept both AC and DC reference signals. External reference input impedance is typically 10 kΩ for the AD5444YRMZ and AD5443YRM.
Can the AD5444YRMZ and AD5443YRM be used in multiplying applications?
Yes. Both the AD5444YRMZ and AD5443YRM are multiplying DACs, meaning they can accept an AC reference signal and provide a digitally controlled attenuation of that signal. They are suitable for applications such as waveform generation, programmable filters, and gain control. The reference input bandwidth is typically 2 MHz for both devices.
What are the operating temperature ranges for these components?
The AD5444YRMZ and AD5443YRM are specified for operation over the industrial temperature range of −40°C to +125°C. This makes them suitable for industrial, automotive, and harsh-environment applications. The YRMZ and YRM suffixes indicate the package and temperature grade, with both being qualified for the extended industrial range.
Which device is better for applications requiring a high-speed digital interface?
The AD5443YRM, with its parallel interface, generally offers faster data update rates compared to the serial interface of the AD5444YRMZ. The parallel interface allows direct connection to a microprocessor bus, enabling higher throughput for applications such as digital waveform generation or high-speed control loops. The AD5444YRMZ is better suited for systems where pin count and board space are critical, and moderate update rates are acceptable.
Are the AD5444YRMZ and AD5443YRM RoHS compliant?
Yes. Both the AD5444YRMZ and AD5443YRM are available in RoHS-compliant packages. The "Z" suffix in AD5444YRMZ indicates a RoHS-compliant version, while the AD5443YRM is also offered in a RoHS-compliant package as standard. Designers should verify the specific ordering part number and its compliance status from the manufacturer's datasheet or official distributor listings.