Part A
AD9761ARSZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7536 個数
- Series
- データ取得 - デジタル/アナログコンバータ (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
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 3271 個数
- Package
- TSSOP-28
- Series
- データ取得 - デジタル/アナログコンバータ (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.