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 AD9752ARURL7 are both 14-bit high-speed TxDAC digital-to-analog converters from Analog Devices in the same TSSOP-28 package, sharing a common pinout and reference architecture. The AD9754ARUZRL7 offers a higher maximum update rate and wider input data rate, making it a viable functional upgrade candidate for AD9752ARURL7 designs, provided the system timing margin and power budget are validated against the higher-speed device.
Resolution
High match
Package Type
High match
Maximum Update Rate
Validation required
Power Consumption
Validation required
Parts at a glance
Part B
AD9752ARURL7
ADI公司
- Lifecycle
- Active
- Stock
- 2049 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 | AD9752ARURL7 | 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. |
| Update Rate (Max) | 125 MSPS | 125 MSPS | Maximum sample rate defines the highest signal bandwidth the DAC can synthesize; both parts share the same 125 MSPS ceiling, so throughput is not a differentiator. |
| SFDR at fOUT = 5 MHz | 83 dBc | 79 dBc | Spurious-free dynamic range indicates spectral purity; the higher-resolution AD9754 offers better SFDR, which matters for communication and instrumentation signal chains. |
| INL (Integral Nonlinearity) | ±1.5 LSB | ±0.5 LSB | INL measures deviation from an ideal transfer function; the AD9752 specifies tighter INL in LSB terms, though the AD9754's LSB is smaller due to higher resolution. |
| DNL (Differential Nonlinearity) | ±1.0 LSB | ±0.5 LSB | DNL indicates monotonicity and step-size accuracy; tighter DNL reduces missing codes and distortion at low signal levels. |
| Supply Voltage | 5 V (analog), 3.3 V (digital) | 5 V (analog), 3.3 V (digital) | Supply rails determine interface compatibility and power budgeting; identical rails mean the parts are drop-in compatible from a power-supply standpoint. |
| Power Dissipation | 185 mW | 185 mW | Power consumption affects thermal design and system efficiency; equal dissipation means no change to thermal management when substituting. |
| Package | 28-Lead TSSOP | 28-Lead TSSOP | Package and pinout determine PCB footprint compatibility; identical TSSOP packages allow direct board-level substitution. |
| Output Type | Current (differential) | Current (differential) | Differential current outputs require an external I/V stage; matching output topology means the same analog front-end can be reused. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Industrial temperature range ensures reliable operation across environments; identical ratings mean no derating differences between the parts. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9754ARUZRL7 | AD9752ARURL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | TxDAC® | TxDAC® |
| Part Status | Active | Obsolete |
| 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 the AD9752ARURL7?
The AD9754ARUZRL7 is a 14-bit, 125 MSPS TxDAC+ digital-to-analog converter, while the AD9752ARURL7 is a 12-bit, 125 MSPS TxDAC+ DAC. Both are pin-compatible members of the same Analog Devices TxDAC+ family and share the same 28-lead TSSOP package, but the AD9754 offers 14-bit resolution versus the AD9752's 12-bit resolution, giving the AD9754 four times the quantization levels and lower quantization noise.
Are the AD9754ARUZRL7 and AD9752ARURL7 pin-compatible and package-compatible?
Yes. Both devices are offered in the same 28-lead TSSOP (RU-28) package with the same pinout, which is a defining feature of the Analog Devices TxDAC+ family. This allows a common PCB footprint and land pattern, though the AD9754ARUZRL7 is supplied in tape-and-reel packaging (RL7 suffix) as is the AD9752ARURL7.
Do the AD9754ARUZRL7 and AD9752ARURL7 have the same update rate and interface?
Yes. Both parts are specified for a maximum update rate of 125 MSPS and use the same parallel CMOS-compatible input interface with a 5-bit segmented architecture. The primary functional difference is resolution (14-bit vs. 12-bit), not speed or digital interface.
What is the difference in spurious-free dynamic range (SFDR) between these two DACs?
Because the AD9754ARUZRL7 provides 14-bit resolution versus 12-bit on the AD9752ARURL7, it achieves better dynamic performance, including higher SFDR and lower quantization noise at a given output frequency. Designers should consult the respective Analog Devices datasheets for the exact SFDR specifications at specific output frequencies and clock rates before finalizing a design.
Can the AD9752ARURL7 be used as a drop-in replacement for the AD9754ARUZRL7?
Physically, the parts are pin-compatible, but they are not functionally identical: the AD9752ARURL7 is 12-bit while the AD9754ARUZRL7 is 14-bit. A drop-in substitution would reduce resolution and dynamic performance, so it should only be done after validating that the lower resolution meets the system's accuracy and SFDR requirements against the manufacturer datasheets.
What are the common applications for the AD9754ARUZRL7 and AD9752ARURL7?
Both are TxDAC+ transmit DACs intended for communications and signal-generation applications, including base station transmit paths, cable modem and broadband infrastructure, and general-purpose waveform synthesis where a 125 MSPS parallel-input DAC is required. The AD9754ARUZRL7 is preferred where higher resolution and dynamic range are needed, while the AD9752ARURL7 suits cost-sensitive designs with 12-bit requirements.
What supply voltage and power do the AD9754ARUZRL7 and AD9752ARURL7 require?
Both devices operate from a single 5 V analog supply with a separate digital supply, consistent with the Analog Devices TxDAC+ family architecture. For exact supply voltage ranges, current consumption, and power dissipation figures, refer to the official Analog Devices datasheets for each part, as these parameters should be verified before design sign-off.