Part A
AD9754ARUZRL7
ADI公司
- Lifecycle
- Active
- Stock
- 3070 件
- Package
- TSSOP-28
- Series
- 資料獲取-數模轉換器（DAC）
Replacement verdict
Compatible functional replacement candidate
The AD9754ARUZRL7 and AD9752ARUZRL7 are functionally compatible 14-bit and 12-bit TxDAC converters in the same TSSOP-28 package with identical pinout, supply, and interface characteristics, making them viable replacement candidates where the 12-bit resolution of the AD9752 is sufficient. Designers should confirm that the reduced resolution and correspondingly lower SNR meet system requirements before substituting.
Resolution
Validation required
Package Type
High match
Supply Voltage
High match
Digital Interface
High match
Parts at a glance
Part B
AD9752ARUZRL7
ADI公司
- Lifecycle
- Active
- Stock
- 9755 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 | AD9754ARUZRL7 | AD9752ARUZRL7 | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 12 bit | Resolution determines the number of discrete output levels; a 14-bit DAC provides 4x finer quantization than a 12-bit DAC, directly affecting signal fidelity and SFDR in reconstruction applications. |
| Number of D/A Converters | 1 | 1 | Both are single-channel DACs, so channel count is not a differentiator; this confirms functional equivalence at the architecture level. |
| Sampling Rate (Max) | 125 Msps | 125 Msps | Maximum update rate defines the bandwidth of signals that can be synthesized; identical rates mean both suit the same high-speed signal chain. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Current-output DACs require an external op-amp I/V stage; matching output topology ensures the same analog front-end design can be reused. |
| Supply Voltage (Analog/Digital) | 5 V / 3.3 V | 5 V / 3.3 V | Compatible supply rails allow drop-in replacement without redesigning the power tree or level-shifting logic interfaces. |
| Package / Case | 28-TSSOP | 28-TSSOP | Identical package and pinout enable direct PCB footprint compatibility, which is critical for functional substitutability. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Matching industrial temperature ranges confirm both parts are qualified for the same environmental conditions. |
| Interface | Parallel | Parallel | A parallel input interface dictates the digital host connection; identical interface type means the same FPGA/controller wiring can be used. |
| INL / DNL | ±1.5 LSB / ±0.5 LSB (typ) | ±0.5 LSB / ±0.25 LSB (typ) | Linearity errors affect absolute accuracy and distortion; the 12-bit part specifies tighter LSB-referenced linearity, though the 14-bit part offers finer absolute resolution. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9754ARUZRL7 | AD9752ARUZRL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | TxDAC® | TxDAC® |
| Part Status | Active | Active |
| Number of Bits | 14 | 12 |
| Number of D/A Converters | 1 | 1 |
| Settling Time | 35ns (Typ) | 35ns (Typ) |
| Output Type | Current - Unbuffered | Current - Unbuffered |
| Differential Output | Yes | Yes |
| Data Interface | Parallel | Parallel |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 5V | 5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| INL / DNL(LSB) | ±1.5, ±0.75 | ±0.5, ±0.25 |
| 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 AD9754ARUZRL7 and AD9752ARUZRL7?
The AD9754ARUZRL7 is a 14-bit, 125 MSPS TxDAC digital-to-analog converter, while the AD9752ARUZRL7 is a 12-bit, 125 MSPS TxDAC. Both are pin-compatible in the same 28-lead TSSOP package and share the same 125 MSPS update rate, but the AD9754 offers 14-bit resolution versus 12-bit resolution on the AD9752, providing higher dynamic range and lower quantization noise for the AD9754.
Are the AD9754ARUZRL7 and AD9752ARUZRL7 pin-compatible?
Yes. Both devices are offered in the same 28-lead TSSOP (RU-28) package with the same pinout, which allows the AD9754ARUZRL7 and AD9752ARUZRL7 to be used interchangeably on a common PCB layout. Designers should still verify all electrical specifications against the respective datasheets before substitution.
What is the maximum update rate of these DACs?
Both the AD9754ARUZRL7 and AD9752ARUZRL7 support a maximum update rate of 125 MSPS, as specified in the Analog Devices TxDAC datasheets. This makes both parts suitable for high-speed communications, instrumentation, and waveform generation applications.
What is the resolution difference and how does it affect performance?
The AD9754ARUZRL7 provides 14-bit resolution, whereas the AD9752ARUZRL7 provides 12-bit resolution. The higher 14-bit resolution of the AD9754 yields lower quantization noise and improved spurious-free dynamic range (SFDR) and signal-to-noise ratio (SNR) compared with the 12-bit AD9752, which is beneficial in applications requiring wide dynamic range.
Do both parts use the same supply voltage and output configuration?
Yes. Both the AD9754ARUZRL7 and AD9752ARUZRL7 operate from a single 5 V supply (with a 3 V to 5 V digital interface) and provide differential current outputs. They share the same TxDAC architecture and segmented current-source DAC design, so the output interface and biasing approach are consistent between the two devices.
Can the AD9752ARUZRL7 be used as a drop-in replacement for the AD9754ARUZRL7?
Because both parts are pin-compatible in the 28-lead TSSOP package and share the same 125 MSPS update rate and 5 V supply, the AD9752ARUZRL7 can physically replace the AD9754ARUZRL7 on the same footprint. However, the AD9752 provides only 12-bit resolution versus 14-bit on the AD9754, so the replacement reduces dynamic performance and should only be made after confirming the system can tolerate the lower resolution.
What package and ordering information applies to these parts?
Both the AD9754ARUZRL7 and AD9752ARUZRL7 are supplied in the 28-lead TSSOP package (RU-28) and are provided in tape-and-reel format, as indicated by the "RL7" suffix in the ordering code. The "Z" designation indicates RoHS-compliant packaging per Analog Devices ordering conventions.