Part A
AD9764ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5181 PCS
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9764ARZ and AD9760ARZRL are both 14-bit, 125 MSPS TxDAC digital-to-analog converters from Analog Devices in a 28-lead SOIC package, sharing the same core architecture, supply requirements, and pinout. The AD9764ARZ is a functionally compatible replacement candidate for the AD9760ARZRL, with the primary distinction being the on-chip reference configuration, which should be validated against the target design's reference strategy before substitution.
Resolution
High match
Sample Rate
High match
Package Type
High match
Reference Configuration
Validation required
Parts at a glance
Part B
AD9760ARZRL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5881 PCS
- Package
- SOIC-28
- 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 | AD9764ARZ | AD9760ARZRL | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 10 bit | Resolution determines the number of discrete output levels; a 14-bit DAC offers far finer quantization than a 10-bit device, directly affecting signal fidelity and dynamic range. |
| Number of D/A Converters | 1 | 1 | Both are single-channel DACs, so channel count is not a differentiator for substitutability. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Both provide unbuffered current outputs, requiring an external op-amp for voltage conversion; matching output architecture simplifies circuit reuse. |
| Settling Time | 35 ns | 35 ns | Settling time governs how quickly the DAC output reaches its final value, impacting maximum update rate and high-frequency performance. |
| Update Rate (Sample Rate) | 125 Msps | 125 Msps | Maximum update rate defines the highest signal bandwidth the DAC can synthesize; identical rates mean comparable throughput capability. |
| Supply Voltage (Analog & Digital) | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Operating supply range determines compatibility with system power rails; matching ranges allow drop-in use in the same supply environment. |
| Package / Case | 28-SOIC | 28-SOIC | Package and footprint must match for physical board compatibility; identical SOIC-28 packages support direct PCB substitution. |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | Temperature range indicates environmental robustness; matching industrial ranges ensure equivalent reliability in the same application conditions. |
| INL / DNL (Integral & Differential Nonlinearity) | ±2.5 LSB INL / ±1.5 LSB DNL (typ) | ±0.5 LSB INL / ±0.25 LSB DNL (typ) | Linearity errors affect accuracy and distortion; the 10-bit part specifies tighter LSB linearity, but the 14-bit part delivers finer absolute resolution despite larger LSB figures. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9764ARZ | AD9760ARZRL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | TxDAC® | TxDAC® |
| Part Status | Active | Active |
| Number of Bits | 14 | 10 |
| Number of D/A Converters | - | 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 | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| INL / DNL(LSB) | - | ±0.5, ±0.25 |
| Architecture | Current Source | Current Source |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Base Product Number | AD9764 | - |
| Number of D / A Converters | 1 | - |
| INL / DNL (LSB) | ±2.5, ±1.5 | - |
| Mounting Type | Surface Mount | - |
| Packaging | Tube | - |
Frequently asked questions
What are the key differences between the AD9764ARZ and AD9760ARZRL?
The AD9764ARZ is a 14-bit, 125 MSPS TxDAC+ digital-to-analog converter, while the AD9760ARZRL is a 10-bit, 125 MSPS TxDAC+ DAC. Both are members of Analog Devices' TxDAC+ family and share the same 28-lead SOIC (R-28) package and pinout, but they differ in resolution (14-bit vs 10-bit) and therefore in dynamic performance specifications such as SNR and SFDR.
Are the AD9764ARZ and AD9760ARZRL pin-compatible?
Yes. Both devices are offered in the same 28-lead SOIC (R-28) package with an identical pinout, as documented in the Analog Devices AD9764 and AD9760 datasheets. This allows a common PCB footprint, though resolution-dependent performance differences must be evaluated for the target application.
What is the maximum update rate of these DACs?
Both the AD9764ARZ and AD9760ARZRL are specified for a maximum update rate of 125 MSPS, per the Analog Devices datasheets. The maximum rate is the same for both resolutions.
What is the resolution of each device?
The AD9764ARZ provides 14-bit resolution, offering 16,384 output levels. The AD9760ARZRL provides 10-bit resolution, offering 1,024 output levels. The higher resolution of the AD9764ARZ generally yields better SNR and lower quantization noise.
Do both parts support the same digital input interface?
Yes. Both devices use a parallel digital input interface with the same input coding (straight binary or twos complement, selectable) and the same supply and reference architecture, as described in the respective Analog Devices datasheets. The AD9764ARZ accepts 14-bit input words, while the AD9760ARZRL accepts 10-bit input words.
Can the AD9760ARZRL be used as a drop-in replacement for the AD9764ARZ?
Not as a functional drop-in. Although the package and pinout are identical, the AD9760ARZRL is a 10-bit device and will not accept the full 14-bit input word of the AD9764ARZ; the lower 4 data bits would be ignored or must be tied off. A design change and performance re-validation are required before substitution.
What are the typical power supply requirements for these DACs?
Both the AD9764ARZ and AD9760ARZRL operate from a single 3.0 V to 5.5 V analog supply and a separate 2.7 V to 5.5 V digital supply, per the Analog Devices datasheets. Power consumption scales with the update rate and the selected full-scale output current.
What is the difference in dynamic performance between the two parts?
Because the AD9764ARZ has 14-bit resolution versus 10-bit for the AD9760ARZRL, the AD9764ARZ achieves higher signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR) at a given output frequency. Exact SNR and SFDR values should be taken from the respective Analog Devices datasheets for the specific output frequency and update rate of interest.