Part A
AD9761ARSZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7536 PCS
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9761ARSZ and AD9760ARRL are both dual-channel 10-bit current-output DACs from Analog Devices, but they differ in package, resolution, and speed. The AD9761ARSZ offers higher resolution and a wider update rate, while the AD9760ARRL provides a lower pin count in a smaller SSOP package. Designers should validate pinout, supply, and timing compatibility before substituting one for the other in an existing layout.
Resolution
Validation required
Package Type
Validation required
Update Rate
Validation required
Output Type
High match
Parts at a glance
Part B
AD9760ARRL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3702 PCS
- Package
- SOIC-28
- Series
- Acquisição de dados - Convertedores digitais para analógicos (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 | AD9761ARSZ | AD9760ARRL | Why it matters |
|---|---|---|---|
| Resolution | 10 bit | 10 bit | Bit depth determines the quantization granularity and achievable dynamic range of the DAC output. |
| Number of DAC Channels | 2 (dual) | 1 (single) | Dual channels enable I/Q or stereo signal generation in one package, while a single channel suits simpler single-path designs. |
| Update Rate (Max) | 40 MSPS | 125 MSPS | Maximum sample rate limits the bandwidth of signals that can be synthesized and affects oversampling capability. |
| Package / Mounting | 28-Lead SSOP (surface mount) | 28-Lead SSOP (surface mount) | Package and footprint compatibility determine whether a part can be dropped into an existing PCB layout. |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | Supply range must match the system rail to ensure proper operation and output compliance. |
| Output Type | Current output (differential) | Current output (differential) | Current-output DACs require an external I/V stage; matching output topology ensures the analog front-end remains compatible. |
| Interface | Parallel CMOS | Parallel CMOS | Digital interface type must match the driving logic and timing of the host processor or FPGA. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range confirms suitability for industrial versus commercial environments. |
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 | AD9761ARSZ | AD9760ARRL |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Series | TxDAC+® | TxDAC® |
| Part Status | Active | Obsolete |
| Base Product Number | AD9761 | - |
| Number of Bits | 10 | - |
| Number of D / A Converters | 2 | - |
| Settling Time | 35ns (Typ) | - |
| Output Type | Current - Unbuffered | - |
| Differential Output | Yes | - |
| Data Interface | Parallel | - |
| Reference Type | External, Internal | - |
| Voltage - Supply, Analog | 3V ~ 5.5V | - |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | - |
| INL / DNL (LSB) | ±0.7, ±0.5 | - |
| Architecture | Current Source | - |
| Operating Temperature | -40°C ~ 85°C | - |
| Mounting Type | Surface Mount | - |
| Packaging | Tube | - |
Frequently asked questions
What are the key architectural differences between the AD9761ARSZ and the AD9760ARRL?
The AD9761ARSZ is a dual-channel, 10-bit, 40 MSPS TxDAC+® with integrated 2x interpolation filters and on-chip voltage reference, housed in a 28-lead SSOP. The AD9760ARRL is a single-channel, 10-bit, 125 MSPS TxDAC® in a 28-lead SOIC package. The AD9761 integrates two DAC cores and digital interpolation, while the AD9760 is a single high-speed DAC without interpolation.
Are the AD9761ARSZ and AD9760ARRL pin-compatible or package-compatible?
No. The AD9761ARSZ uses a 28-lead SSOP (RS suffix) package, while the AD9760ARRL uses a 28-lead SOIC (R suffix) package. The pinouts and package footprints differ, so they are not drop-in replacements for each other.
How do the maximum update rates of the AD9761ARSZ and AD9760ARRL compare?
The AD9761ARSZ supports a maximum update rate of 40 MSPS per DAC channel. The AD9760ARRL supports a maximum update rate of 125 MSPS. The AD9760 is therefore suited to higher-speed single-channel applications, while the AD9761 targets dual-channel transmit paths at lower sample rates.
Do both parts include on-chip interpolation filters?
No. The AD9761ARSZ includes integrated 2x interpolation filters on each channel, which simplifies transmit signal-chain design. The AD9760ARRL does not include interpolation filters; it is a direct single-channel DAC, so any interpolation must be performed externally in the digital domain.
What is the resolution and DAC type of each device?
Both devices are 10-bit current-output (current-steering) DACs from Analog Devices' TxDAC family. The AD9761ARSZ provides two 10-bit DAC channels, while the AD9760ARRL provides one 10-bit DAC channel.
Can the AD9761ARSZ replace the AD9760ARRL in an existing single-channel design?
Not directly. Beyond the package and pinout differences, the AD9761ARSZ is a dual-channel interpolating DAC with a lower 40 MSPS maximum update rate, whereas the AD9760ARRL is a single-channel 125 MSPS DAC. A replacement would require PCB redesign and validation of sample rate, channel count, and digital interface against the manufacturer datasheets.
Which part is better suited for a dual-channel I/Q transmit path?
The AD9761ARSZ is intended for dual-channel transmit applications, as it integrates two matched 10-bit DACs with 2x interpolation filters in one package. The AD9760ARRL is a single-channel DAC, so a dual-channel path would require two devices plus external interpolation.