Part A
AD9744ARU
ADI公司
- Lifecycle
- Active
- Stock
- 5441 件
- Package
- TSSOP-28
- Series
- 資料獲取-數模轉換器（DAC）
Replacement verdict
Compatible functional replacement candidate
The AD9744ARU and AD9744ARURL7 are functionally equivalent 14-bit current-output DACs from the same AD9744 family, sharing identical core specifications including resolution, sample rate, supply voltage, and package type. The primary distinction is the packaging format, with the ARURL7 variant supplied in tape-and-reel configuration for automated assembly. Both parts are suitable for drop-in substitution in the same PCB footprint, provided the reel packaging aligns with the production method.
Resolution and Sample Rate
High match
Package Type
High match
Supply Voltage
High match
Packaging Format
Validation required
Parts at a glance
Part B
AD9744ARURL7
ADI公司
- Lifecycle
- Active
- Stock
- 7907 件
- Package
- TSSOP-28
- Series
- 資料獲取-數模轉換器（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 | AD9744ARU | AD9744ARURL7 | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 14 bit | Determines the quantization granularity of the DAC output; both parts must match for identical signal fidelity. |
| Number of D/A Converters | 1 | 1 | Specifies channel count; a single-channel DAC cannot directly replace a multi-channel device in a system. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Defines the electrical interface to downstream circuitry; buffered vs unbuffered affects external op-amp requirements. |
| Data Interface | Parallel | Parallel | Determines the digital bus protocol and pin count needed to drive the converter. |
| Supply Voltage | 2.7V to 3.6V | 2.7V to 3.6V | Must be compatible with the board's power rail; out-of-range supplies can damage the device or degrade performance. |
| Package / Case | 28-TSSOP | 28-TSSOP | Footprint and thermal characteristics must match for a drop-in board replacement. |
| Mounting Type | Surface Mount | Surface Mount | Assembly method must match the PCB manufacturing process. |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C | Ensures the part meets the environmental range of the target application. |
| Packaging | Tube | Tape & Reel (TR) | Packaging form affects automated assembly line compatibility and inventory handling, though the die is identical. |
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 | AD9744ARU | AD9744ARURL7 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Series | TxDAC® | TxDAC® |
| Part Status | Obsolete | Obsolete |
Frequently asked questions
What are the key differences between AD9744ARU and AD9744ARURL7?
Both are 14-bit, 210 MSPS TxDAC digital-to-analog converters from Analog Devices in a 28-lead TSSOP package. The AD9744ARU is the standard tube-packaged ordering option, while the AD9744ARURL7 is the same device supplied in tape-and-reel packaging (7-inch reel) for automated assembly. The electrical specifications and die are identical; the difference is packaging and shipping format.
Are AD9744ARU and AD9744ARURL7 electrically and functionally interchangeable?
Yes. Both ordering codes refer to the same AD9744 14-bit, 210 MSPS DAC in a 28-lead TSSOP. They share identical resolution, update rate, SFDR, power dissipation, and pinout. The only distinction is the delivery format (tube vs. tape-and-reel), so they are interchangeable in the target design.
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. These specifications apply equally to the AD9744ARU and AD9744ARURL7 since they are the same silicon device.
What package do the AD9744ARU and AD9744ARURL7 use?
Both parts are supplied in a 28-lead TSSOP (Thin Shrink Small Outline Package). The "RU" suffix in the ordering code denotes this package type. PCB land patterns and thermal considerations are therefore identical for both ordering options.
Which part should be selected for high-volume automated PCB assembly?
The AD9744ARURL7 is the preferred choice for high-volume automated assembly because it is supplied in tape-and-reel format (7-inch reel, "RL7" suffix), which is compatible with pick-and-place equipment. The AD9744ARU in tubes is typically used for prototyping, low-volume runs, or manual assembly.
Do the AD9744ARU and AD9744ARURL7 share the same operating temperature range?
Yes. Both ordering codes correspond to the same AD9744 device and therefore share the same specified operating temperature range for the industrial-grade TSSOP version. Designers should confirm the exact grade from the manufacturer datasheet for the specific lot.
Can the AD9744ARURL7 be used as a drop-in replacement for the AD9744ARU?
Yes, from an electrical and footprint standpoint the two are drop-in equivalents because they are the same 14-bit, 210 MSPS DAC in the same 28-lead TSSOP package. The substitution only affects inventory and assembly handling due to the different packaging format (tape-and-reel vs. tube).