Part A
ADR420BRZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6197 ПКС
- Package
- SOIC-8
- Series
- PMIC - Справочник напряжения
Replacement verdict
Compatible functional replacement candidate
The ADR420BRZ and ADR420BR are functionally equivalent voltage reference ICs sharing the same core specifications, package, and pinout, with the BRZ suffix denoting RoHS-compliant lead-free construction versus the standard BR variant. The ADR420BRZ is a suitable functional replacement candidate for the ADR420BR in most designs, provided the RoHS-compliant construction is acceptable for the target application.
Output Voltage and Initial Accuracy
High match
Package Type and Pinout
High match
Operating Temperature Range
High match
RoHS and Lead-Free Construction
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 | ADR420BRZ | ADR420BR | Why it matters |
|---|---|---|---|
| Initial Accuracy | ±1 mV (max) | ±1 mV (max) | Determines the output voltage error at 25°C; identical accuracy means equivalent precision at room temperature. |
| Temperature Coefficient | 3 ppm/°C (max) | 3 ppm/°C (max) | Governs voltage drift over temperature; matching tempco ensures equivalent stability across the operating range. |
| Output Voltage | 2.048 V | 2.048 V | The nominal reference voltage must match for the parts to be functionally interchangeable in a given circuit. |
| Initial Accuracy Grade | B grade | B grade | The grade defines the guaranteed accuracy and tempco binning; same grade confirms equivalent performance class. |
| Operating Temperature Range | −40°C to +125°C | −40°C to +125°C | Defines the environments where the reference is guaranteed to meet spec; identical range means equal application coverage. |
| Supply Voltage Range | 4.0 V to 18 V | 4.0 V to 18 V | Determines compatibility with the system supply rail; matching ranges ensure the same power architecture works for both. |
| Output Current Capability | 10 mA (source/sink) | 10 mA (source/sink) | Sets the load-driving capability of the reference; identical ratings mean equivalent drive strength for downstream loads. |
| Package | 8-Lead SOIC (R-8) | 8-Lead SOIC (R-8) | Footprint and thermal characteristics must match for drop-in board compatibility. |
| RoHS Compliance | RoHS compliant (lead-free) | Non-RoHS (contains lead) | The "Z" suffix denotes lead-free/RoHS construction; this affects regulatory compliance and solder process requirements, making the parts non-interchangeable for RoHS-restricted assemblies. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADR420BRZ | ADR420BR |
|---|---|---|
| Series | XFET® | XFET® |
| Part Status | Active | Obsolete |
| Mounting Type | Surface Mount | Surface Mount |
| Reference Type | Series | - |
| Output Type | Fixed | - |
| Voltage - Output (Min/Fixed) | 2.048V | - |
| Current - Output | 10 mA | - |
| Tolerance | ±0.05% | - |
| Temperature Coefficient | 3ppm/°C | - |
| Noise - 01 Hzto10 Hz | 1.75µVp-p | - |
| Voltage - Input | 4V ~ 18V | - |
| Supply Current | 600µA | - |
| Operating Temperature | -40°C ~ 125°C (TA) | - |
Frequently asked questions
What is the difference between the ADR420BRZ and the ADR420BR?
The ADR420BRZ is the RoHS-compliant, lead-free (Pb-free) version of the ADR420BR. Both are 2.048 V, high-accuracy voltage references in an 8-lead SOIC package with the same electrical specifications; the "Z" suffix denotes the Pb-free/RoHS-compliant package variant per Analog Devices ordering nomenclature.
Are the ADR420BRZ and ADR420BR electrically interchangeable?
Yes. Both devices share the same core specifications: 2.048 V output, ±0.05% initial accuracy (B grade), 3 ppm/°C temperature coefficient (B grade), and an 8-lead SOIC footprint. The only documented difference is the Pb-free/RoHS package finish on the ADR420BRZ.
What is the initial output voltage accuracy of the ADR420BRZ and ADR420BR?
Both the ADR420BRZ and ADR420BR are B-grade devices with an initial accuracy of ±0.05% (maximum) at 2.048 V output, verified from the Analog Devices ADR420 datasheet.
What temperature coefficient do the ADR420BRZ and ADR420BR specify?
Both parts are specified with a temperature coefficient of 3 ppm/°C (maximum) over the −40°C to +125°C operating range, per the Analog Devices ADR420 datasheet B-grade specifications.
Do the ADR420BRZ and ADR420BR use the same package and pinout?
Yes. Both are offered in the 8-lead SOIC (R-8) package with identical pin functions, so PCB land patterns and pin assignments are the same. The ADR420BRZ differs only in its Pb-free/RoHS-compliant lead finish.
Which part should be selected for a RoHS-compliant design?
The ADR420BRZ should be selected for RoHS-compliant and Pb-free assembly requirements, as the "Z" suffix designates the RoHS-compliant package variant. The ADR420BR is the non-RoHS legacy ordering option.
What is the output current capability of the ADR420BRZ and ADR420BR?
Both devices source and sink up to 10 mA output current, per the Analog Devices ADR420 datasheet, and are specified for stable operation with appropriate output capacitance.
What is the operating temperature range for the ADR420BRZ and ADR420BR?
Both the ADR420BRZ and ADR420BR are specified over the −40°C to +125°C industrial temperature range, as documented in the Analog Devices ADR420 datasheet.