Part A
AD9761ARSZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 7536 PCS
- Series
- Acquisition de données - convertisseur numérique - analogique (DAC)
Replacement verdict
Not a drop-in replacement
The AD9761ARSZ and AD9760ARUZ50RL7 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 interface architecture, and supply voltage requirements, so a direct board-level substitution is not possible without redesign.
Different package footprint
Different digital interface
Different supply voltage
Different pinout
Parts at a glance
Part B
AD9760ARUZ50RL7
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 4123 PCS
- Package
- TSSOP-28
- Series
- Acquisition de données - convertisseur numérique - analogique (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 | AD9760ARUZ50RL7 | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 2 | 1 | Determines whether the part can drive two independent signal paths (I/Q) or only a single channel, which is fundamental to functional substitutability. |
| Resolution | 10 bit | 10 bit | Sets the quantization granularity and achievable dynamic range of the DAC output. |
| Maximum Update Rate | 40 MSPS | 125 MSPS | Defines the maximum sample rate the DAC can support, directly limiting signal bandwidth and application suitability. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Indicates whether an external buffer/amplifier is required and how the output must be interfaced to downstream circuitry. |
| Supply Voltage | 3 V to 5.5 V | 2.7 V to 5.5 V | Determines compatibility with the system power rail and whether level shifting or regulator changes are needed. |
| Package / Case | 28-SSOP | 28-TSSOP | Affects PCB footprint and layout; different package types are not drop-in compatible without board redesign. |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | Confirms whether the part meets the environmental requirements of the target application. |
| Interface | Parallel | Parallel | Specifies the digital input protocol, which must match the driving FPGA/DSP/controller interface. |
| Mounting Type | Surface Mount | Surface Mount | Ensures the assembly process and board technology are compatible with the component. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9761ARSZ | AD9760ARUZ50RL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | TxDAC+® | TxDAC® |
| Part Status | Active | Active |
| 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 AD9760ARUZ50RL7?
The AD9761ARSZ is a dual-channel 10-bit TxDAC+ digital-to-analog converter in a 28-lead SSOP package, while the AD9760ARUZ50RL7 is a single-channel 10-bit TxDAC+ DAC in a 28-lead TSSOP package supplied in tape-and-reel format. The AD9761 integrates two DAC cores for I/Q or dual-channel applications, whereas the AD9760 provides one DAC channel.
Do the AD9761ARSZ and AD9760ARUZ50RL7 have the same resolution and update rate?
Both devices are 10-bit TxDAC+ converters. The AD9761ARSZ supports an update rate of up to 40 MSPS per channel, while the AD9760ARUZ50RL7 is specified for operation up to 125 MSPS. The maximum update rate therefore differs significantly between the two parts.
Are the AD9761ARSZ and AD9760ARUZ50RL7 pin-compatible or package-compatible?
No. The AD9761ARSZ uses a 28-lead SSOP package, and the AD9760ARUZ50RL7 uses a 28-lead TSSOP package. The pinouts and package footprints differ, so they are not drop-in replacements for each other and require separate PCB land patterns.
What are the supply voltage and power requirements for these DACs?
Both the AD9761ARSZ and AD9760ARUZ50RL7 operate from a single 3.0 V to 5.5 V analog supply and a separate 2.7 V to 5.5 V digital supply, consistent with the TxDAC+ family specifications. Power consumption differs because the AD9761 contains two DAC channels while the AD9760 contains one; consult the respective datasheets for exact power figures at specific operating conditions.
What digital input interface do the AD9761ARSZ and AD9760ARUZ50RL7 use?
Both devices accept parallel CMOS-compatible digital input words at their DAC ports. The AD9761ARSZ receives two 10-bit input words (one per channel), while the AD9760ARUZ50RL7 receives a single 10-bit input word. Input timing is referenced to the respective clock input on each device.
Can the AD9761ARSZ be used as a substitute for the AD9760ARUZ50RL7 in an existing design?
Not directly. The AD9761ARSZ is a dual-channel device in an SSOP package with a lower maximum update rate, while the AD9760ARUZ50RL7 is a single-channel device in a TSSOP package rated to 125 MSPS. Package footprint, channel count, pinout, and speed rating all differ, so substitution requires a redesign and validation against the target application requirements.
What are the typical applications for the AD9761ARSZ versus the AD9760ARUZ50RL7?
The AD9761ARSZ, with its dual 10-bit channels, is suited to baseband I/Q transmit paths and dual-channel signal generation. The AD9760ARUZ50RL7, with its single 10-bit channel and higher 125 MSPS update rate, is suited to single-channel high-speed waveform synthesis, communications transmit paths, and instrumentation where a faster single DAC is required.