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 AD9760ARU50 are not drop-in replacements for one another. Although both are dual-channel 10-bit current-output DACs from Analog Devices, they differ in package footprint, digital input interface, and supply architecture, so a direct board-level substitution is not possible without redesign.
Different package footprint
Different digital interface
Different supply architecture
Different pinout
Parts at a glance
Part B
AD9760ARU50
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 8985 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 | AD9760ARU50 | 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 | 1 | Dual-channel parts support I/Q or stereo signal paths, while a single-channel part suits one signal chain only. |
| Update Rate (Sample Rate) | 40 MSPS | 125 MSPS | Maximum update rate bounds the signal bandwidth the DAC can synthesize and must meet system sampling requirements. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Current-output DACs require an external I/V stage; matching output topology ensures the analog front end remains compatible. |
| Supply Voltage | 3.0 V to 5.5 V | 2.7 V to 5.5 V | Supply range must cover the board rail and affects output swing, power, and logic-level compatibility. |
| Package / Mounting | 28-SSOP (Surface Mount) | 28-TSSOP (Surface Mount) | Footprint and package style must match the PCB land pattern for a drop-in replacement. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Temperature range confirms the part meets the environmental requirements of the target application. |
| Interface | Parallel | Parallel | Digital interface type must match the driving logic and timing of the host processor or FPGA. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9761ARSZ | AD9760ARU50 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | TxDAC+® | TxDAC® |
| Part Status | Active | Obsolete |
| Number of Bits | 10 | 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 | 3V ~ 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 | AD9761 | - |
| Number of D / A Converters | 2 | - |
| INL / DNL (LSB) | ±0.7, ±0.5 | - |
| Mounting Type | Surface Mount | - |
| Packaging | Tube | - |
Frequently asked questions
What are the key differences between the AD9761ARSZ and AD9760ARU50?
The AD9761ARSZ is a dual-channel 10-bit 40 MSPS TxDAC+ with integrated 2x interpolation filters, while the AD9760ARU50 is a single-channel 10-bit 50 MSPS TxDAC+ without interpolation filters. The AD9761ARSZ comes in a 28-lead SSOP package, whereas the AD9760ARU50 is housed in a 28-lead TSSOP package.
Are the AD9761ARSZ and AD9760ARU50 pin-compatible?
No. Although both devices are offered in 28-lead packages, the AD9761ARSZ uses a 28-lead SSOP (RS-28) while the AD9760ARU50 uses a 28-lead TSSOP (RU-28). The pin functions and PCB land patterns 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 up to 40 MSPS per channel, while the AD9760ARU50 supports up to 50 MSPS on its single channel. The AD9760ARU50 therefore offers a higher maximum clock rate but only one DAC channel.
Does the AD9761ARSZ include digital interpolation filters?
Yes. The AD9761ARSZ integrates 2x digital interpolation filters on each of its two channels, which relaxes the requirements on the reconstruction filter. The AD9760ARU50 does not include interpolation filters and requires external filtering after the DAC output.
What is the resolution and architecture of these DACs?
Both the AD9761ARSZ and AD9760ARU50 are 10-bit current-output TxDAC+ converters. The AD9761ARSZ provides two 10-bit DAC channels, while the AD9760ARU50 provides a single 10-bit DAC channel.
Can the AD9760ARU50 replace the AD9761ARSZ in an existing dual-channel design?
No. The AD9760ARU50 is a single-channel DAC, whereas the AD9761ARSZ is a dual-channel DAC with integrated interpolation filters. A single AD9760ARU50 cannot replace the two channels and on-chip filtering of the AD9761ARSZ without significant redesign.
What are the typical applications for each device?
The AD9761ARSZ, with its dual channels and 2x interpolation, is suited to I/Q baseband transmit paths in communications systems. The AD9760ARU50, as a single-channel 50 MSPS DAC, is suited to single-channel waveform synthesis and general-purpose signal generation where interpolation filtering is not required.