Part A
AD9744ARUZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6063 PCS
- Package
- TSSOP-28
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9744ARUZ is a functionally compatible replacement candidate for the AD9744ARU, as both parts share the same 14-bit DAC architecture, 210 MSPS conversion rate, and 28-lead TSSOP package. The primary distinction is the RoHS-compliant lead-free construction of the ARUZ suffix versus the lead-containing ARU version, which may require validation for specific compliance-driven applications.
Resolution and Architecture
High match
Sample Rate
High match
Package Type
High match
RoHS Compliance
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 | AD9744ARUZ | AD9744ARU | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 14 bit | Determines the quantization granularity of the DAC output; both parts must match for identical dynamic performance. |
| Number of DAC Channels | 1 | 1 | Single-channel architecture defines the signal path topology; identical here so circuit design is unchanged. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Current-output DACs require an external I/V stage; matching output type ensures the analog front-end remains compatible. |
| Supply Voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | Defines the required power rail; identical ranges allow the same power supply design to be reused. |
| Package / Case | 28-TSSOP | 28-TSSOP | Footprint and pinout must match for drop-in board compatibility; both use the same TSSOP package. |
| Mounting Type | Surface Mount | Surface Mount | Assembly method must be consistent with the PCB process; both are surface-mount devices. |
| RoHS / Lead-Free Status | RoHS Compliant, Lead-Free | Contains Lead (non-RoHS) | The "Z" suffix denotes lead-free/RoHS compliance; this affects regulatory compliance and solder process selection, making the parts non-interchangeable for RoHS-restricted assemblies. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Ensures the device meets environmental requirements of the target application; identical ranges preserve thermal design margins. |
| Data Interface | Parallel | Parallel | Defines the digital connection to the host/FPGA; matching interface keeps the digital timing and layout unchanged. |
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 | AD9744ARUZ | AD9744ARU |
|---|---|---|
| Series | TxDAC® | TxDAC® |
| Part Status | Active | Obsolete |
| Number of Bits | 14 | - |
| Number of D/A Converters | 1 | - |
| Settling Time | 11ns (Typ) | - |
| Output Type | Current - Unbuffered | - |
| Differential Output | Yes | - |
| Data Interface | Parallel | - |
| Reference Type | External, Internal | - |
| Voltage - Supply, Analog | 2.7V ~ 3.6V | - |
| Voltage - Supply, Digital | 2.7V ~ 3.6V | - |
| INL / DNL(LSB) | ±0.8, ±0.5 | - |
| Architecture | Current Source | - |
| Operating Temperature | -40°C ~ 85°C | - |
Frequently asked questions
What is the difference between AD9744ARUZ and AD9744ARU?
The AD9744ARUZ is the RoHS-compliant, lead-free (Pb-free) version of the AD9744ARU. Both are 14-bit, 210 MSPS TxDAC digital-to-analog converters in a 28-lead TSSOP package. The "Z" suffix in AD9744ARUZ denotes RoHS compliance and the lead-free plating, while AD9744ARU is the non-RoHS lead-containing version. Functionally and electrically they are identical devices.
Are AD9744ARUZ and AD9744ARU electrically and functionally interchangeable?
Yes. Both parts share the same 14-bit resolution, 210 MSPS maximum update rate, 28-lead TSSOP package, pinout, and datasheet specifications. The only documented difference is the RoHS/lead-free status indicated by the "Z" suffix. They are interchangeable in function, but the AD9744ARUZ should be selected for RoHS-compliant assemblies.
What is the resolution and maximum update rate of the AD9744?
The AD9744 is a 14-bit TxDAC with a maximum update rate of 210 MSPS, as specified in the Analog Devices datasheet. Both AD9744ARUZ and AD9744ARU share these specifications.
What package do AD9744ARUZ and AD9744ARU use?
Both devices are supplied in a 28-lead TSSOP (Thin Shrink Small Outline Package). The package and pinout are identical between the two orderable part numbers.
Does the "Z" suffix in AD9744ARUZ affect electrical performance?
No. The "Z" suffix denotes RoHS compliance and lead-free termination finish per Analog Devices ordering conventions. It does not change the electrical specifications, resolution, speed grade, or functional behavior of the device compared with AD9744ARU.
Which part should be used for a RoHS-compliant design?
AD9744ARUZ should be used for RoHS-compliant designs because it is the lead-free, RoHS-compliant orderable version. AD9744ARU is the non-RoHS version and should not be selected where RoHS compliance is required.
Can AD9744ARUZ directly replace AD9744ARU on an existing PCB?
Yes, from a footprint and pinout perspective, since both use the same 28-lead TSSOP package and pinout. However, the replacement should be validated against the manufacturer datasheet and the assembly's RoHS requirements, since the difference is the lead-free/RoHS status rather than electrical function.