Part A
ADR02BRZ
ADI公司
- Lifecycle
- Active
- Stock
- 1847 件
- Package
- SOIC-8
- Series
- PMIC-電壓參攷
Replacement verdict
Compatible functional replacement candidate
The ADR02BRZ and ADR02AR-REEL7 are functionally compatible voltage reference ICs sharing the same 5.0 V output, series topology, and SOIC-8 package, making the ADR02BRZ a viable replacement candidate for the ADR02AR-REEL7 in most designs. The primary distinction is the tighter initial accuracy and lower temperature coefficient grade of the ADR02BRZ, which meets or exceeds the ADR02AR-REEL7 specifications; however, designers should confirm that the improved grade does not affect any calibration assumptions and verify availability in the required reel packaging format.
Output Voltage
High match
Package Type
High match
Initial Accuracy Grade
Validation required
Temperature Coefficient
Validation required
Parts at a glance
Part B
ADR02AR-REEL7
ADI公司
- Lifecycle
- Active
- Stock
- 2453 件
- Package
- SOIC-8
- Series
- PMIC-電壓參攷
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADR02BRZ | ADR02AR-REEL7 | Why it matters |
|---|---|---|---|
| Initial Accuracy | ±0.06% (B grade) | ±0.1% (A grade) | Tighter initial tolerance directly affects system accuracy at room temperature; the B grade offers better guaranteed precision than the A grade. |
| Temperature Coefficient | 3 ppm/°C max (B grade) | 10 ppm/°C max (A grade) | Lower tempco reduces drift over temperature, which is critical for precision measurement and industrial applications. |
| Output Voltage | 5.0 V | 5.0 V | Both provide the same nominal reference voltage, so the output level is functionally interchangeable. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Identical package ensures drop-in PCB compatibility without layout changes. |
| Supply Voltage Range | 7 V to 36 V | 7 V to 36 V | Same input range means both parts work in the same supply environment. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Equivalent temperature ratings allow use in the same environmental conditions. |
| Output Current Capability | 10 mA (source/sink) | 10 mA (source/sink) | Same drive capability supports the same load conditions in the application. |
| Long-Term Drift | 25 ppm/1000 hr (B grade) | 50 ppm/1000 hr (A grade) | Lower long-term drift improves stability over the product lifetime, important for calibration-sensitive designs. |
| Grade / Precision Class | B grade (higher precision) | A grade (standard precision) | The grade determines guaranteed accuracy and drift specs; substituting A for B may degrade system performance. |
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 | ADR02BRZ | ADR02AR-REEL7 |
|---|---|---|
| Part Status | Active | Obsolete |
| Reference Type | Series | Series |
| Output Type | Fixed | Fixed |
| Voltage - Output (Min/Fixed) | 5V | 5V |
| Current - Output | 10 mA | 10 mA |
| Tolerance | ±0.06% | ±0.1% |
| Temperature Coefficient | 3ppm/°C | 10ppm/°C |
| Noise - 01 Hzto10 Hz | 10µVp-p | 10µVp-p |
| Voltage - Input | 7V ~ 36V | 7V ~ 36V |
| Supply Current | 1mA | 1mA |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the ADR02BRZ and ADR02AR-REEL7?
Both are ADR02 5.0 V precision voltage references from Analog Devices in an 8-lead SOIC package, but they differ in grade and packaging. The ADR02BRZ is a B-grade device with a tighter initial accuracy of ±0.06% maximum and a temperature coefficient of 3 ppm/°C maximum, supplied in tube form. The ADR02AR-REEL7 is an A-grade device with ±0.1% maximum initial accuracy and 5 ppm/°C maximum temperature coefficient, supplied on a 7-inch tape-and-reel. The B-grade part therefore offers tighter guaranteed specifications, while the A-grade reel version is oriented toward automated high-volume assembly.
Are the ADR02BRZ and ADR02AR-REEL7 pin-compatible?
Yes. Both devices are ADR02 references in the standard 8-lead SOIC (R-8) package with the same pinout, so they are footprint-compatible on the same PCB land pattern. The difference lies in guaranteed electrical grade and delivery format, not in pin assignment or package outline.
What is the output voltage and initial accuracy of each part?
Both provide a 5.000 V output. The ADR02BRZ guarantees ±0.06% maximum initial accuracy (approximately ±3 mV), while the ADR02AR-REEL7 guarantees ±0.1% maximum initial accuracy (approximately ±5 mV). These figures are the datasheet maximum limits for the respective grades.
How do the temperature coefficients of the two grades compare?
The ADR02BRZ (B-grade) is specified at 3 ppm/°C maximum temperature coefficient, and the ADR02AR-REEL7 (A-grade) is specified at 5 ppm/°C maximum. The B-grade therefore provides tighter drift performance over the operating temperature range, which matters in precision data-acquisition and instrumentation designs.
What supply voltage and current do these references require?
The ADR02 family operates from a supply of 7 V to 40 V and typically draws about 0.65 mA of quiescent current with no load. Both the ADR02BRZ and ADR02AR-REEL7 share these operating conditions, as they are the same base reference design in different grades.
What is the difference in packaging and delivery format?
The ADR02BRZ is supplied in standard tube packaging, which suits low-to-medium volume production and prototyping. The ADR02AR-REEL7 is supplied on a 7-inch tape-and-reel with 750 units per reel, which is compatible with automated pick-and-place assembly lines. The reel suffix does not change the device's electrical grade, which is set by the A-grade designation.
Can the ADR02AR-REEL7 be used as a drop-in replacement for the ADR02BRZ?
Electrically and mechanically it can be placed in the same socket, but it is not a specification-equivalent replacement. The A-grade part has looser guaranteed initial accuracy (±0.1% vs ±0.06%) and temperature coefficient (5 ppm/°C vs 3 ppm/°C). A design that relies on the B-grade limits must re-validate its error budget before substituting the A-grade device.
What are the operating temperature ranges for these references?
Both the ADR02BRZ and ADR02AR-REEL7 are specified over the industrial temperature range of −40 °C to +125 °C. The grade-dependent temperature coefficient limits apply across this range.