Part A
AD5449YRUZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1633 PCS
- Package
- TSSOP-16
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5449YRUZ and AD5449YRU are functionally equivalent dual 12-bit current-output DACs from Analog Devices, with the YRUZ suffix denoting a RoHS-compliant package variant of the same YRU device. Both share identical resolution, channel count, interface, and operating temperature range, making the YRUZ a suitable drop-in replacement for the YRU in most designs, provided RoHS compliance is acceptable.
Resolution
High match
Channel Count
High match
Package Type
High match
RoHS Compliance
Validation required
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5449YRUZ | AD5449YRU | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 2 | 2 | Channel count must match for the device to fit the same circuit architecture. |
| Resolution | 12 bits | 12 bits | Resolution determines the output step size and achievable precision. |
| DAC Architecture | Multiplying current-output R-2R | Multiplying current-output R-2R | Architecture affects output type, external op-amp requirements, and AC performance. |
| Interface Type | SPI-compatible serial | SPI-compatible serial | The digital interface must match the host controller for direct communication. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Supply range must be compatible with the system power rails. |
| Reference Input Range | ±10 V | ±10 V | Reference range sets the maximum output span and signal scaling. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Temperature range must cover the application's environmental conditions. |
| Package / Pin Count | 16-lead TSSOP | 16-lead TSSOP | Package and pinout must match for board-level drop-in compatibility. |
| RoHS Compliance | RoHS compliant | Non-RoHS (contains lead) | RoHS status affects regulatory compliance and solder process compatibility. |
| Lead Finish | Matte tin | Tin-lead | Lead finish impacts solderability, whisker risk, and compliance requirements. |
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 | AD5449YRUZ | AD5449YRU |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 2 | 2 |
| Settling Time | 120ns | 120ns |
| Output Type | Current - Unbuffered | Current - Unbuffered |
| Differential Output | Yes | Yes |
| Data Interface | SPI, DSP | SPI, DSP |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| Voltage - Supply, Digital | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| INL / DNL(LSB) | ±1 (Max), -1/+2 (Max) | ±1 (Max), -1/+2 (Max) |
| Architecture | R-2R | R-2R |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
Frequently asked questions
What is the difference between the AD5449YRUZ and the AD5449YRU?
The AD5449YRUZ is the RoHS-compliant, lead-free version of the AD5449YRU. Both are identical dual 12-bit current-output digital-to-analog converters from Analog Devices in a 16-lead TSSOP package, but the AD5449YRUZ is supplied in a Pb-free, RoHS-compliant package, while the AD5449YRU is the older lead-containing (non-RoHS) version.
Are the AD5449YRUZ and AD5449YRU functionally interchangeable?
Yes. Both parts share the same datasheet, die, pinout, and electrical specifications. The only documented difference is the package material and RoHS compliance status. In designs where lead-free assembly is acceptable, the AD5449YRUZ can directly replace the AD5449YRU.
What is the resolution and architecture of the AD5449YRUZ and AD5449YRU?
Both devices are dual-channel, 12-bit, current-output (R-2R ladder) digital-to-analog converters. They are multiplying DACs designed for applications such as waveform generation, programmable attenuation, and signal reconstruction.
What package do the AD5449YRUZ and AD5449YRU use?
Both parts are offered in a 16-lead TSSOP (Thin Shrink Small Outline Package). The package dimensions and pin assignments are identical between the two versions.
What is the operating temperature range for the AD5449YRUZ and AD5449YRU?
Both devices are specified for the industrial temperature range of -40°C to +125°C, as stated in the Analog Devices AD5449 datasheet.
What supply voltage do the AD5449YRUZ and AD5449YRU require?
Both parts operate from a single +2.5 V to +5.5 V supply for the digital interface and a separate +2.5 V to +5.5 V reference input. The analog output compliance range and reference input range are defined in the datasheet.
Does the AD5449YRUZ have the same pinout as the AD5449YRU?
Yes. The pin configuration is identical for both versions. Pin 1 through pin 16 functions, including the DAC outputs, reference inputs, and digital control pins, are the same.
Which version should be used for new designs, the AD5449YRUZ or the AD5449YRU?
For new designs, the AD5449YRUZ is recommended because it is RoHS-compliant and lead-free, meeting current environmental and manufacturing regulations. The AD5449YRU is a legacy non-RoHS part and may be subject to availability restrictions.