Part A
AD9744ARUZRL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3270 PCS
- Package
- TSSOP-28
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9744ARUZRL7 and AD9744ARU are functionally equivalent 14-bit current-output DACs from the same AD9744 family, sharing identical core specifications including resolution, sample rate, and supply requirements. The primary distinction is the packaging and delivery format, with the AD9744ARUZRL7 supplied in tape-and-reel packaging and the AD9744ARU being a tube/tray variant. Both parts are suitable for direct functional substitution in new designs, provided the assembly process accommodates the respective packaging format.
Resolution and Sample Rate
High match
Package Type
High match
Supply Voltage
High match
Packaging Format
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 | AD9744ARUZRL7 | AD9744ARU | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 14 bit | Determines the quantization accuracy of the DAC output; both parts provide identical 14-bit resolution. |
| Number of D/A Converters | 1 | 1 | Confirms both are single-channel DACs, so channel count is not a differentiator for substitution. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Both provide the same current-mode output, requiring the same external output stage for interchangeability. |
| Data Interface | Parallel | Parallel | Identical parallel interface ensures the same host connection and timing scheme can be reused. |
| Supply Voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | Same supply range means the same power rail design works for either part. |
| Package / Case | 28-TSSOP | 28-TSSOP | Identical package and footprint allow drop-in board replacement without layout changes. |
| Mounting Type | Surface Mount | Surface Mount | Both are surface-mount devices, so assembly process compatibility is preserved. |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C | Same industrial temperature range ensures equivalent environmental robustness. |
| Packaging | Tape & Reel (RL7) | Tube | Different packaging affects automated assembly handling and inventory form, though the die and function are the same. |
| Lead-Free / RoHS Status | RoHS Compliant (Z suffix) | Non-RoHS (legacy) | The Z-suffix part is lead-free/RoHS compliant while the non-Z part is legacy; this matters for regulatory compliance in new designs. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9744ARUZRL7 | 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 are the key differences between AD9744ARUZRL7 and AD9744ARU?
Both parts are the same AD9744 14-bit, 210 MSPS TxDAC+ digital-to-analog converter in a 28-lead TSSOP package. The AD9744ARUZRL7 is the RoHS-compliant (Z) version supplied in tape-and-reel packaging (RL7, 750 units per reel), while the AD9744ARU is the non-RoHS tube-packaged version. The AD9744ARUZRL7 is the currently active, lead-free production variant.
Are AD9744ARUZRL7 and AD9744ARU electrically and functionally interchangeable?
Yes. Both are the same AD9744 die with identical 14-bit resolution, 210 MSPS update rate, 28-lead TSSOP pinout, and specified performance. The only differences are RoHS compliance (Z suffix) and packaging format (tape-and-reel vs. tube), so they are functionally interchangeable in the same PCB footprint.
What is the resolution and maximum update rate of the AD9744?
The AD9744 is a 14-bit current-output DAC with a maximum update rate of 210 MSPS, making it suitable for high-speed communications, instrumentation, and signal synthesis applications.
What package do AD9744ARUZRL7 and AD9744ARU use?
Both devices are supplied in a 28-lead TSSOP (Thin Shrink Small Outline Package), designated by the "RU" suffix in the part number. The PCB land pattern and pinout are identical between the two variants.
What does the "Z" and "RL7" suffix mean in AD9744ARUZRL7?
The "Z" suffix indicates RoHS-compliant, lead-free construction. The "RL7" suffix indicates tape-and-reel packaging with 750 units per reel. The AD9744ARU lacks the Z suffix and is supplied in tubes.
What is the supply voltage and power consumption of the AD9744?
The AD9744 operates from a single 3.0 V to 3.6 V supply (nominal 3.3 V) and typically consumes about 135 mW at 3.3 V. It provides a nominal full-scale output current of 20 mA, adjustable via an external resistor.
Which variant should be selected for new RoHS-compliant designs?
For new designs requiring RoHS compliance and automated pick-and-place assembly, the AD9744ARUZRL7 is the appropriate choice because it is lead-free and supplied in tape-and-reel. The AD9744ARU is the non-RoHS tube version and is generally not recommended for new RoHS-restricted designs.
Do AD9744ARUZRL7 and AD9744ARU share the same datasheet specifications?
Yes. Both variants are covered by the same Analog Devices AD9744 datasheet and share identical electrical, timing, and thermal specifications. The suffix differences relate only to RoHS status and packaging, not to device performance.