Part A
ADR4525ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4570 Stückzahl
- Package
- SOIC-8
- Series
- PMIC Spannung Referenz
Replacement verdict
Compatible functional replacement candidate
The ADR4525ARZ and ADR4525BRZ-R7 are functionally compatible voltage reference ICs sharing the same 2.5 V output, series topology, SOIC-8 package, and operating temperature range, making them viable substitutes in most designs. The BRZ-R7 grade offers tighter initial accuracy and lower temperature drift, so the ARZ can be replaced by the BRZ-R7 without circuit changes, while substituting the ARZ for the BRZ-R7 may reduce precision in accuracy-critical applications. Verify grade-dependent specifications against system tolerance requirements before finalizing the replacement.
Output Voltage
High match
Package Type
High match
Operating Temperature Range
High match
Initial Accuracy and Temperature Drift Grade
Validation required
Parts at a glance
Part B
ADR4525BRZ-R7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7672 Stückzahl
- Package
- SOIC-8
- Series
- PMIC Spannung Referenz
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADR4525ARZ | ADR4525BRZ-R7 | Why it matters |
|---|---|---|---|
| Initial Accuracy (Vout) | ±0.04% (max) | ±0.02% (max) | Tighter initial tolerance reduces system calibration effort and improves absolute output accuracy at power-up. |
| Temperature Coefficient | 2 ppm/°C (max) | 1 ppm/°C (max) | Lower tempco yields more stable reference voltage across temperature, critical for precision measurement and industrial applications. |
| Output Voltage | 2.5 V | 2.5 V | Both provide the same nominal reference, so the output voltage itself is directly substitutable in a design. |
| Output Current Capability | ±10 mA (source/sink) | ±10 mA (source/sink) | Identical drive capability ensures the same load handling and buffering behavior in the target circuit. |
| Supply Voltage Range | 3.0 V to 15 V | 3.0 V to 15 V | Matching supply range means both parts work with the same power rail without redesign. |
| Operating Temperature Range | −40°C to +125°C | −40°C to +125°C | Same temperature rating ensures equivalent environmental robustness for industrial and automotive use. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Identical footprint allows drop-in PCB replacement without layout changes. |
| Supply Current | 950 µA (typ) | 950 µA (typ) | Same quiescent current keeps power budget unchanged when swapping parts. |
| Output Noise (0.1 Hz to 10 Hz) | 1.25 µV p-p (typ) | 1.25 µV p-p (typ) | Equivalent low-frequency noise preserves resolution in high-precision ADC and sensor signal chains. |
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 | ADR4525ARZ | ADR4525BRZ-R7 |
|---|---|---|
| Part Status | Active | Active |
| Reference Type | Series | Series |
| Output Type | Fixed | Fixed |
| Voltage - Output (Min/Fixed) | 2.5V | 2.5V |
| Current - Output | 10 mA | 10 mA |
| Tolerance | ±0.04% | ±0.02% |
| Temperature Coefficient | 4ppm/°C | 2ppm/°C |
| Noise - 01 Hzto10 Hz | 1.25µVp-p | 1.25µVp-p |
| Voltage - Input | 3V ~ 15V | 3V ~ 15V |
| Supply Current | 950µA | 950µA |
| 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 ADR4525ARZ and ADR4525BRZ-R7?
Both devices are 2.5 V high-precision voltage references in an 8-lead SOIC package, but they differ in initial accuracy and temperature coefficient grade. The ADR4525ARZ (A grade) offers ±0.04% initial accuracy and 2 ppm/°C maximum temperature coefficient, while the ADR4525BRZ-R7 (B grade) offers ±0.02% initial accuracy and 1 ppm/°C maximum temperature coefficient. The B grade is also supplied in tape-and-reel packaging (R7 suffix).
Are the ADR4525ARZ and ADR4525BRZ-R7 pin-compatible?
Yes. Both parts are offered in the same 8-lead SOIC (R-8) package with identical pinout, so they are pin-compatible and share the same PCB land pattern.
What is the output voltage and operating temperature range of these references?
Both the ADR4525ARZ and ADR4525BRZ-R7 provide a fixed 2.5 V output and are specified over the −40°C to +125°C operating temperature range.
Can the ADR4525ARZ be used as a drop-in replacement for the ADR4525BRZ-R7?
Electrically and mechanically they are interchangeable, but the B grade provides tighter initial accuracy and lower temperature coefficient. Substituting the A grade for the B grade reduces precision margin, so the design's accuracy budget must be revalidated before substitution.
What is the difference in packaging between the two orderable part numbers?
The ADR4525ARZ is supplied in standard tube packaging, while the ADR4525BRZ-R7 is supplied in tape-and-reel (7-inch reel) format suitable for automated pick-and-place assembly. Both use the same 8-lead SOIC body.
What are the initial accuracy and temperature coefficient specifications for each grade?
The ADR4525ARZ is specified at ±0.04% initial accuracy with a 2 ppm/°C maximum temperature coefficient. The ADR4525BRZ-R7 is specified at ±0.02% initial accuracy with a 1 ppm/°C maximum temperature coefficient.
Do both parts share the same long-term drift and noise performance?
Both grades are members of the same ADR4525 family and share the same core reference architecture, low dropout and low noise characteristics. For guaranteed limits on long-term drift and output noise, consult the respective grade's datasheet, as guaranteed specifications may differ by grade.