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 AD9740ARZRL is a viable functional replacement candidate for the AD9744ARUZ in many designs, sharing the same 10-bit DAC resolution, 210 MSPS update rate, and 5 V supply architecture, though the differing package and interface configuration require validation before substitution.
Resolution and Sample Rate
High match
Supply Voltage
High match
Package Type
Not compatible
Digital Interface
Validation required
Parts at a glance
Part B
AD9740ARZRL
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2321 PCS
- Package
- SOIC-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 | AD9744ARUZ | AD9740ARZRL | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 10 bit | Resolution determines the number of discrete output levels; a 14-bit DAC offers 16x finer quantization than a 10-bit DAC, directly affecting signal fidelity and SFDR in reconstruction applications. |
| Update Rate (Max) | 210 MSPS | 210 MSPS | Maximum sample rate defines the highest signal bandwidth the DAC can synthesize; both parts share the same 210 MSPS ceiling, so throughput is not a differentiator. |
| Package / Pin Count | 28-lead TSSOP | 28-lead SOIC (Wide) | Footprint and pin pitch differ between TSSOP and wide-body SOIC, so PCB layout and assembly must be redesigned even though both are 28-pin packages. |
| Output Type | Current (differential) | Current (differential) | Both provide differential current outputs, allowing similar external transformer or op-amp interface networks; this supports functional substitutability at the analog front end. |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | Identical single-supply range means the same power rail design can be reused, simplifying replacement in existing 3.3 V systems. |
| Power Consumption (Typical) | 135 mW | 135 mW | Matching typical power dissipation means thermal and supply-current budgets remain unchanged when substituting one part for the other. |
| SFDR (at fOUT = 10 MHz) | 84 dBc | 79 dBc | Spurious-free dynamic range indicates spectral purity; the higher-resolution AD9744 delivers better SFDR, which matters for communication and instrumentation signal chains. |
| INL (Integral Nonlinearity) | ±1.5 LSB | ±0.5 LSB | INL measures static accuracy; the 10-bit AD9740 specifies tighter LSB-referenced linearity, though absolute error in volts depends on the differing LSB sizes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature ratings confirm both parts suit the same environmental conditions without derating. |
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 | AD9740ARZRL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | TxDAC® | TxDAC® |
| Part Status | Active | Active |
| Number of Bits | 14 | 10 |
| Number of D/A Converters | 1 | 1 |
| Settling Time | 11ns (Typ) | 11ns (Typ) |
| Output Type | Current - Unbuffered | Current - Unbuffered |
| Differential Output | Yes | Yes |
| Data Interface | Parallel | Parallel |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 2.7V ~ 3.6V | 2.7V ~ 3.6V |
| Voltage - Supply, Digital | 2.7V ~ 3.6V | 2.7V ~ 3.6V |
| INL / DNL(LSB) | ±0.8, ±0.5 | ±0.15, ±0.12 |
| Architecture | Current Source | Current Source |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD9744ARUZ and AD9740ARZRL?
The AD9744ARUZ is a 14-bit, 210 MSPS TxDAC+ digital-to-analog converter in a 28-lead TSSOP package, while the AD9740ARZRL is a 10-bit, 210 MSPS TxDAC+ DAC in a 28-lead SOIC package. The primary differences are resolution (14-bit vs 10-bit) and package type (TSSOP vs SOIC).
Do the AD9744ARUZ and AD9740ARZRL have the same update rate?
Yes. Both devices are specified for a maximum update rate of 210 MSPS, making them suitable for similar high-speed signal synthesis applications.
Are the AD9744ARUZ and AD9740ARZRL pin-compatible?
No. The AD9744ARUZ uses a 28-lead TSSOP package, while the AD9740ARZRL uses a 28-lead SOIC package. The package footprints and PCB land patterns differ, so they are not drop-in replacements without layout changes.
What is the resolution difference and how does it affect performance?
The AD9744ARUZ provides 14-bit resolution, offering finer quantization and lower quantization noise than the 10-bit AD9740ARZRL. The higher resolution of the AD9744ARUZ supports better dynamic range and spectral performance in demanding applications.
Do both parts operate from the same supply voltage?
Yes. Both the AD9744ARUZ and AD9740ARZRL operate from a single 3.3 V supply, with a nominal supply range of 2.7 V to 3.6 V, consistent with the Analog Devices TxDAC+ family specifications.
Can the AD9740ARZRL be used as a lower-cost alternative to the AD9744ARUZ?
It can be considered only if the 10-bit resolution of the AD9740ARZRL meets the system requirements and the PCB is redesigned for the SOIC package. The AD9744ARUZ should be retained where 14-bit resolution is required.
Are both devices from the same manufacturer and family?
Yes. Both the AD9744ARUZ and AD9740ARZRL are Analog Devices TxDAC+ family members, sharing the same architecture and 210 MSPS update rate, differing primarily in resolution and package.