Part A
AD9761ARSZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7536 Stückzahl
- Series
- Data Acquisition von Digital to Analog Converters (DAC)
Replacement verdict
Not a drop-in replacement
The AD9761ARSZ and AD9760ARURL7 are not drop-in replacements for one another. Although both are dual-channel 10-bit current-output DACs from Analog Devices, they differ in resolution, package, and pinout, so a direct board-level swap is not possible without redesign.
Different resolution
Different package type
Different pinout
Different supply configuration
Parts at a glance
Part B
AD9760ARURL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3271 Stückzahl
- Package
- TSSOP-28
- Series
- Data Acquisition von 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 | AD9761ARSZ | AD9760ARURL7 | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 2 (dual) | 1 (single) | A dual-channel DAC can drive I/Q or stereo paths in one package, while a single-channel part requires two devices for the same function, affecting board space and channel matching. |
| Resolution | 10 bits | 10 bits | Resolution sets the quantization step and achievable dynamic range; matching resolution is essential for equivalent signal fidelity. |
| Update Rate (Max) | 40 MSPS | 125 MSPS | Maximum update rate determines the highest signal bandwidth the DAC can synthesize; a slower part may not support wideband applications. |
| Package / Mounting | 28-lead SSOP (surface mount) | 28-lead TSSOP (surface mount) | Footprint and package style must match the PCB layout; different packages are not drop-in compatible without layout changes. |
| Supply Voltage | 3.0 V to 5.5 V | 2.7 V to 5.5 V | Operating supply range affects compatibility with the system rail; a narrower minimum may limit low-voltage operation. |
| Output Type | Current output (differential) | Current output (differential) | Output topology determines the external I/V conversion and filtering network required; matching topology simplifies substitution. |
| Interface | Parallel CMOS | Parallel CMOS | Digital interface compatibility ensures the DAC can connect to the same controller without glue logic or protocol changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range confirms suitability for industrial environments; matching ranges indicate equivalent environmental robustness. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9761ARSZ | AD9760ARURL7 |
|---|---|---|
| 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 differences between the AD9761ARSZ and AD9760ARURL7?
The AD9761ARSZ is a dual-channel 10-bit 40 MSPS TxDAC+ converter in a 28-lead SSOP package, while the AD9760ARURL7 is a single-channel 10-bit 125 MSPS TxDAC+ converter in a 28-lead TSSOP package. The AD9761 integrates two DACs with on-chip digital interpolation filters, whereas the AD9760 is a single high-speed DAC optimized for higher update rates.
Are the AD9761ARSZ and AD9760ARURL7 pin-compatible?
No. The AD9761ARSZ uses a 28-lead SSOP (RS-28) package and the AD9760ARURL7 uses a 28-lead TSSOP (RU-28) package. The pinouts and package footprints differ, so they are not drop-in replacements for each other.
What is the maximum update rate of each converter?
The AD9761ARSZ supports an update rate of 40 MSPS per DAC channel, while the AD9760ARURL7 supports a maximum update rate of 125 MSPS. The AD9760 is therefore suited to higher-speed single-channel applications.
How many DAC channels does each device provide?
The AD9761ARSZ is a dual DAC with two 10-bit channels and integrated digital interpolation filters for I and Q signal paths. The AD9760ARURL7 is a single 10-bit DAC channel.
What is the resolution of the AD9761ARSZ and AD9760ARURL7?
Both devices are 10-bit DACs. The AD9761ARSZ provides 10-bit resolution on each of its two channels, and the AD9760ARURL7 provides 10-bit resolution on its single channel.
What supply voltage do these DACs require?
Both the AD9761ARSZ and AD9760ARURL7 operate from a single 3.0 V to 5.5 V analog supply, with a separate digital supply range of 2.7 V to 5.5 V, consistent with the TxDAC+ family specifications.
Which device is better suited for I/Q transmit applications?
The AD9761ARSZ is intended for dual-channel I/Q transmit paths because it integrates two matched 10-bit DACs with digital interpolation filters in one package. The AD9760ARURL7, being single-channel, would require two devices for an I/Q architecture.
Do both parts support the same digital input interface?
Both devices accept parallel digital input words and are members of the TxDAC+ family, but the AD9761ARSZ includes on-chip interpolation filters and dual-channel input formatting, while the AD9760ARURL7 accepts a single 10-bit parallel input word. Interface timing and control pins should be verified against each respective datasheet.