Part A
AD9753ASTZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4116 PCS
- Package
- LQFP-48
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9753ASTZ and AD9753ASTZRL are functionally identical, differing only in packaging format (tube vs. tape and reel). Both share the same 14-bit, 300 MSPS TxDAC+ core, 48-lead LQFP package, and industrial temperature range, making them fully interchangeable for design and production purposes. The tape-and-reel variant is recommended for high-volume automated assembly, while the tube version suits prototyping and low-volume runs.
Resolution and Sample Rate
High match
Package Type
High match
Operating Temperature Range
High match
Packaging Format
High match
Parts at a glance
Part B
AD9753ASTZRL
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8876 PCS
- Package
- LQFP-48
- 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 | AD9753ASTZ | AD9753ASTZRL | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Determines the quantization granularity of the DAC output; identical resolution means equivalent signal fidelity. |
| Number of DAC Channels | 1 | 1 | Single-channel architecture must match for direct functional substitution in a circuit. |
| Sampling Rate | 300 MSPS | 300 MSPS | Maximum update rate defines the achievable output bandwidth and must be equal for drop-in replacement. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Output configuration must match to ensure the downstream analog interface remains compatible. |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | Operating supply range must be compatible with the existing power rail design. |
| Package / Case | 48-LQFP | 48-LQFP | Footprint and pinout must match for physical board compatibility. |
| Mounting Type | Surface Mount | Surface Mount | Assembly method must be identical for the part to be placed on the same PCB. |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | Thermal envelope must match to guarantee reliable operation in the target environment. |
| Packaging | Tray | Tape & Reel | Packaging form affects manufacturing handling and reflow assembly; the reel version suits automated pick-and-place lines. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9753ASTZ | AD9753ASTZRL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | TxDAC+® | TxDAC+® |
| Part Status | Active | Active |
| Number of Bits | 12 | 12 |
| 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 | 3V ~ 3.6V | 3V ~ 3.6V |
| Voltage - Supply, Digital | 3V ~ 3.6V | 3V ~ 3.6V |
| INL / DNL(LSB) | ±0.5, ±0.4 | ±0.5, ±0.4 |
| Architecture | Current Source | Current Source |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What is the difference between AD9753ASTZ and AD9753ASTZRL?
The AD9753ASTZ and AD9753ASTZRL are the same device: a 12-bit, 300 MSPS high-speed TxDAC+ digital-to-analog converter in a 48-lead LQFP package. The suffix difference is packaging form: AD9753ASTZ is the standard tray/individual packaging order code, while AD9753ASTZRL denotes tape-and-reel packaging for automated assembly. Electrical and functional specifications are identical.
Are the AD9753ASTZ and AD9753ASTZRL electrically and functionally interchangeable?
Yes. Both order codes refer to the same silicon die and package (48-lead LQFP, 7 mm × 7 mm body). The only difference is the shipping medium (tray versus tape-and-reel), so they are interchangeable in circuit design and PCB layout.
What are the key performance specifications of the AD9753?
The AD9753 is a 12-bit, 300 MSPS TxDAC+ DAC with an update rate up to 300 MSPS, an on-chip 1.2 V reference, differential current outputs (typically 20 mA full-scale), and a 3.0 V to 3.6 V analog supply with a separate 2.7 V to 3.6 V digital supply. It is specified for SFDR and IMD performance suitable for wideband communications and instrumentation applications.
Which package does the AD9753ASTZ use, and is it RoHS compliant?
The AD9753ASTZ is supplied in a 48-lead LQFP package. The "Z" suffix in the order code indicates RoHS-compliant, lead-free construction per Analog Devices' ordering nomenclature.
Why would a designer choose the AD9753ASTZRL tape-and-reel version over the AD9753ASTZ?
The AD9753ASTZRL is supplied on tape-and-reel, which is preferred for high-volume automated pick-and-place assembly lines. The AD9753ASTZ tray packaging is typically used for prototyping, low-volume runs, or manual assembly. The choice is purely a manufacturing/logistics decision, not a performance one.
Can the AD9753ASTZ and AD9753ASTZRL be used in the same PCB footprint?
Yes. Both are the same 48-lead LQFP package with identical pinout and land pattern, so a single PCB footprint accommodates either order code without layout changes.
What are the typical applications for the AD9753?
The AD9753 is typically used in wideband communications transmitters, direct digital synthesis (DDS) systems, instrumentation and test equipment, and other high-speed signal generation applications requiring 12-bit resolution at update rates up to 300 MSPS.