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
Compatible functional replacement candidate
The AD9761ARSZ and AD9760ARU50RL are both dual-channel 10-bit current-output DACs from Analog Devices, but they differ in package, update rate, and supply configuration. The AD9761ARSZ is a dual 10-bit TxDAC+ in a 28-lead SSOP rated for 40 MSPS, while the AD9760ARU50RL is a single 10-bit TxDAC in a 28-lead TSSOP rated for 50 MSPS. Because the channel count and package footprint differ, the AD9760ARU50RL is not a direct drop-in replacement for the AD9761ARSZ; substitution requires validation of channel count, board layout, and clock/supply conditions.
Channel Count
Not compatible
Package Type
Not compatible
Update Rate
Validation required
Supply Configuration
Validation required
Parts at a glance
Part B
AD9760ARU50RL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 9961 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 | AD9760ARU50RL | Why it matters |
|---|---|---|---|
| Resolution | 10 bit | 10 bit | Both converters offer 10-bit resolution, so quantization noise floor and dynamic range are comparable for signal reconstruction. |
| Number of DAC Channels | 2 (dual) | 1 (single) | A dual-channel DAC supports I/Q or stereo signal paths in one package, while a single-channel device requires two parts for the same function, affecting board area and channel matching. |
| Update Rate (Max) | 40 MSPS | 125 MSPS | Maximum update rate determines the highest signal bandwidth that can be synthesized; the higher-speed part enables wider-band or higher-IF applications. |
| Package / Mounting | 28-Lead SSOP (surface mount) | 28-Lead TSSOP (surface mount) | Different package footprints require different PCB land patterns, so a drop-in replacement is not possible without layout changes. |
| Supply Voltage (Analog/Digital) | 5 V (single supply) | 5 V (single supply) | Matching supply requirements simplifies power-rail design and allows reuse of the same regulator and decoupling scheme. |
| Output Type | Current output (differential) | Current output (differential) | Both provide differential current outputs, so the same external I/V conversion and filtering topology can generally be reused. |
| On-Chip Reference | Yes (internal reference) | Yes (internal reference) | An internal reference reduces external component count and simplifies full-scale current setting, aiding functional interchangeability. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature ratings mean both parts suit the same environmental conditions without derating concerns. |
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 | AD9760ARU50RL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| 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 AD9760ARU50RL?
The AD9761ARSZ is a dual-channel 10-bit 40 MSPS TxDAC+ with integrated 2x interpolation filters, while the AD9760ARU50RL is a single-channel 10-bit 125 MSPS TxDAC+ without interpolation. The AD9761ARSZ is supplied in a 28-lead SSOP package, whereas the AD9760ARU50RL is supplied in a 28-lead TSSOP package. The AD9760ARU50RL offers a higher update rate but only one DAC channel, while the AD9761ARSZ provides two channels with on-chip digital interpolation.
Are the AD9761ARSZ and AD9760ARU50RL pin-compatible?
No. The AD9761ARSZ uses a 28-lead SSOP package and the AD9760ARU50RL uses a 28-lead TSSOP package. These are different package footprints with different land patterns, so they are not drop-in replacements for each other on a PCB.
What is the maximum update rate of each device?
The AD9761ARSZ supports an update rate of 40 MSPS per channel. The AD9760ARU50RL supports an update rate of 125 MSPS. The higher rate of the AD9760ARU50RL makes it suitable for wider-bandwidth single-channel applications, while the AD9761ARSZ targets dual-channel transmit paths at lower sample rates.
How many DAC channels does each part provide?
The AD9761ARSZ integrates two 10-bit DAC channels. The AD9760ARU50RL integrates a single 10-bit DAC channel. This is a fundamental architectural difference that affects channel count, board space, and system partitioning.
Does the AD9761ARSZ include digital interpolation?
Yes. The AD9761ARSZ includes on-chip 2x interpolation filters, which ease the reconstruction filter requirements and allow the DAC to run at twice the input data rate. The AD9760ARU50RL does not include interpolation filters; it converts the input data directly at the DAC update rate.
What is the resolution of both converters?
Both the AD9761ARSZ and the AD9760ARU50RL are 10-bit DACs. Resolution is identical, so the choice between them depends on channel count, update rate, interpolation, and package rather than bit depth.
Can the AD9760ARU50RL replace the AD9761ARSZ in an existing dual-channel design?
No. The AD9760ARU50RL provides only one DAC channel and lacks the 2x interpolation filters of the AD9761ARSZ, and it is in a different package. A dual-channel design using the AD9761ARSZ would require two AD9760ARU50RL devices plus external interpolation and a redesigned PCB, so a direct replacement is not possible.
Which part is better suited for a single-channel high-speed transmit path?
The AD9760ARU50RL is the appropriate choice for a single-channel high-speed transmit path because it offers a 125 MSPS update rate in a single-channel architecture. The AD9761ARSZ is optimized for dual-channel applications at up to 40 MSPS per channel with integrated interpolation.