Part A
ADR4530ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7182 PCS
- Package
- SOIC-8
- Series
- PMIC - Referência à Voltação
Replacement verdict
Compatible functional replacement candidate
The ADR4550ARZ-R7 and ADR4530ARZ share the same series, package, and pinout, making them functionally interchangeable in most designs; however, the 5.0 V versus 3.0 V output difference requires validation against the target supply rail and downstream reference requirements before substitution.
Output Voltage
Validation required
Package Type
High match
Pin Configuration
High match
Operating Temperature Range
High match
Parts at a glance
Part B
ADR4550ARZ-R7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6435 PCS
- Package
- SOIC-8
- Series
- PMIC - Referência à Voltação
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADR4550ARZ-R7 | ADR4530ARZ | Why it matters |
|---|---|---|---|
| Output Voltage | 5.0 V | 3.0 V | The nominal reference voltage directly sets the system's full-scale value; a 5.0 V vs 3.0 V difference means the parts are not directly interchangeable without redesigning the signal chain. |
| Initial Accuracy | ±0.02% (max) | ±0.02% (max) | Initial accuracy determines the untrimmed error at room temperature; identical accuracy means both offer the same baseline precision grade. |
| Temperature Coefficient | 2 ppm/°C (max) | 2 ppm/°C (max) | Drift over temperature dominates precision system error budgets; matching tempco means comparable stability across the operating range. |
| Output Current Capability | 10 mA (source/sink) | 10 mA (source/sink) | Drive capability determines how many ADC/DAC reference inputs or loads can be supported; identical ratings mean equivalent fan-out capability. |
| Supply Voltage Range | 3.0 V to 15 V | 3.0 V to 15 V | The allowable supply range affects compatibility with the system rail; identical ranges mean the same power supply can be reused. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | The temperature range defines the environments in which the part is guaranteed; matching ranges mean equivalent environmental qualification. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Package and pinout determine board footprint and layout compatibility; identical packages allow drop-in PCB reuse. |
| Supply Current | 950 µA (typ) | 950 µA (typ) | Quiescent current affects total power budget in low-power designs; identical consumption means no change to thermal or battery-life calculations. |
| Output Noise (0.1 Hz to 10 Hz) | 2.5 µV p-p (typ) | 2.5 µV p-p (typ) | Low-frequency noise limits achievable resolution in precision measurement; matching noise performance means equivalent signal-to-noise behavior. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADR4530ARZ | ADR4550ARZ-R7 |
|---|---|---|
| Part Status | Active | Active |
| Reference Type | Series | Series |
| Output Type | Fixed | Fixed |
| Voltage - Output (Min/Fixed) | 3V | 5V |
| Current - Output | 10 mA | 10 mA |
| Tolerance | ±0.04% | ±0.04% |
| Temperature Coefficient | 4ppm/°C | 4ppm/°C |
| Noise - 01 Hzto10 Hz | 1.6µVp-p | 2.8µVp-p |
| Voltage - Input | 3.1V ~ 15V | 5.1V ~ 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 ADR4550ARZ-R7 and the ADR4530ARZ?
The primary difference is the output voltage: the ADR4550ARZ-R7 provides a 5.000 V reference, while the ADR4530ARZ provides a 3.000 V reference. Both are members of Analog Devices' ADR45xx family of low-noise, high-accuracy voltage references and share the same 8-lead SOIC package and electrical architecture, differing only in factory-trimmed output voltage.
Are the ADR4550ARZ-R7 and ADR4530ARZ pin-compatible?
Yes. Both devices are offered in the same 8-lead SOIC (R-8) package with an identical pinout, so they are pin-compatible. However, because the output voltages differ (5.000 V vs. 3.000 V), a design substitution requires verifying that the downstream circuitry and supply headroom are compatible with the new reference voltage.
What initial accuracy and temperature coefficient do these references offer?
Both the ADR4550ARZ-R7 and ADR4530ARZ are A-grade devices with an initial output voltage accuracy of ±0.04% maximum and a temperature coefficient of 2 ppm/°C maximum over the specified operating temperature range, per Analog Devices datasheet specifications.
What is the output voltage noise of the ADR4550ARZ-R7 and ADR4530ARZ?
Both devices are specified with low output voltage noise of 2.4 µV p-p typical (0.1 Hz to 10 Hz) and approximately 90 nV/√Hz typical at 1 kHz, making them suitable for precision data acquisition and instrumentation applications.
What supply voltage and current do these references require?
Both the ADR4550ARZ-R7 and ADR4530ARZ operate from a supply voltage of 3.0 V to 15 V and typically draw about 950 µA of quiescent current. The ADR4530ARZ requires the supply to remain above its 3.000 V output plus dropout, so a supply of at least 3.3 V is typically used in practice.
What is the difference between the R7 suffix on ADR4550ARZ-R7 and the ADR4530ARZ ordering code?
The "-R7" suffix on ADR4550ARZ-R7 denotes tape-and-reel packaging (7-inch reel) from Analog Devices. The ADR4530ARZ designation identifies the 3.000 V A-grade device in the SOIC package; packaging and ordering suffix details should be confirmed against the manufacturer's ordering guide for the specific quantity and reel size required.
Can the ADR4550ARZ-R7 be used to replace the ADR4530ARZ in an existing design?
Not directly. Although the devices are pin-compatible, the ADR4550ARZ-R7 outputs 5.000 V versus 3.000 V for the ADR4530ARZ. A replacement is only valid if the circuit's input range, ADC/DAC full-scale configuration, and supply voltage can accommodate the higher reference voltage without exceeding ratings or degrading accuracy.