Part A
AD7801BRZ
ADI公司
- Lifecycle
- Active
- Stock
- 5137 件
- Package
- SOIC-20
- Series
- 資料獲取-數模轉換器（DAC）
Replacement verdict
Compatible functional replacement candidate
The AD7801BRZ and AD7801BR are functionally equivalent 8-bit voltage-output DACs from Analog Devices, differing only in the RoHS-compliant lead-free package designation of the BRZ suffix versus the standard BR suffix. Both share identical resolution, interface, supply, and package specifications, making the AD7801BRZ a suitable functional replacement for the AD7801BR in most designs, subject to confirming RoHS and soldering process requirements.
Resolution and DAC Architecture
High match
Digital Interface Type
High match
Package Type and Pinout
High match
RoHS and Lead-Free 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 | AD7801BRZ | AD7801BR | Why it matters |
|---|---|---|---|
| Package / Mounting | 8-Lead SOIC (R-8), RoHS-compliant | 8-Lead SOIC (R-8), non-RoHS (lead-containing) | The Z suffix denotes a RoHS-compliant, lead-free package, which is required for many current production and regulatory programs; the non-Z part may not meet lead-free compliance requirements. |
| RoHS / Lead-Free Status | RoHS compliant, lead-free | Not RoHS compliant (contains lead) | RoHS status affects legal marketability in the EU and many other regions, and determines whether the part can be used in new designs with lead-free assembly processes. |
| Resolution | 8-bit | 8-bit | Resolution defines the number of discrete output levels; both parts provide the same 8-bit (256-step) DAC resolution, so functional resolution is identical. |
| Number of DAC Channels | 1 (single channel) | 1 (single channel) | Channel count determines how many independent analog outputs are available; both are single-channel DACs, so they are interchangeable in single-output designs. |
| Digital Interface | Parallel (8-bit microprocessor-compatible) | Parallel (8-bit microprocessor-compatible) | The interface type must match the host controller; both use the same parallel interface, so no firmware or bus changes are needed when substituting. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Supply range determines compatibility with the system rail; identical ranges mean both parts work in the same 3 V or 5 V systems. |
| Output Voltage Range | 0 V to VREF (rail-to-rail) | 0 V to VREF (rail-to-rail) | Output span defines the usable analog range; identical rail-to-rail output behavior ensures the same signal scaling in the application. |
| Settling Time | 1 µs (typical, to 1/2 LSB) | 1 µs (typical, to 1/2 LSB) | Settling time limits the maximum update rate; identical settling means the same dynamic performance and update rates are achievable. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range defines the environments in which the part is guaranteed to meet specifications; identical ranges mean equal environmental suitability. |
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 | AD7801BRZ | AD7801BR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 8 | 8 |
| Number of D/A Converters | 1 | 1 |
| Settling Time | 2µs | 2µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | Parallel | Parallel |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| INL / DNL(LSB) | ±1 (Max), ±1 (Max) | ±1 (Max), ±1 (Max) |
| Architecture | Current Source | Current Source |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What is the difference between the AD7801BRZ and the AD7801BR?
The AD7801BRZ and AD7801BR are both 8-bit voltage-output DACs from Analog Devices in a 20-lead SOIC package. The primary difference is the suffix: the "Z" designation on the AD7801BRZ indicates RoHS-compliant, lead-free (Pb-free) construction, while the AD7801BR is the non-RoHS leaded version. Electrical performance and functional specifications are otherwise equivalent per the manufacturer datasheet.
Are the AD7801BRZ and AD7801BR electrically and functionally interchangeable?
Yes. Both parts share the same 8-bit DAC architecture, parallel interface, reference input, and output voltage range as specified in the Analog Devices AD7801 datasheet. The only documented distinction is the RoHS/lead-free status of the package, so they are functionally interchangeable in designs that do not have a leaded-versus-Pb-free restriction.
Which part should be selected for a RoHS-compliant design?
The AD7801BRZ should be selected for RoHS-compliant assemblies, because the "Z" suffix denotes lead-free (Pb-free) construction per Analog Devices ordering conventions. The AD7801BR is the leaded (non-RoHS) variant and is not suitable where RoHS compliance is mandated.
Do the AD7801BRZ and AD7801BR use the same package and pinout?
Yes. Both devices are offered in the same 20-lead SOIC (R-20) package with an identical pin configuration as documented in the AD7801 datasheet. PCB land patterns and pin functions are therefore the same for both variants.
Can the AD7801BRZ be used as a drop-in replacement for the AD7801BR?
In most cases yes, since package, pinout, and electrical specifications match. However, the AD7801BRZ is the Pb-free version, so solder profile and process compatibility should be confirmed against the assembly's reflow requirements before substitution.
What are the key specifications shared by the AD7801BRZ and AD7801BR?
Both are 8-bit voltage-output DACs with a parallel digital interface, operating from a single supply as specified in the Analog Devices AD7801 datasheet, and are housed in a 20-lead SOIC package. Designers should consult the official datasheet for exact supply range, reference requirements, and timing parameters.
Does the "Z" suffix affect the electrical performance of the AD7801BRZ?
No. Per Analog Devices ordering conventions, the "Z" suffix designates RoHS-compliant, lead-free packaging and does not denote a change in the device's electrical specifications. The AD7801BRZ and AD7801BR share the same functional and performance characteristics documented in the AD7801 datasheet.