Part A
ADR4530ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7182 Stückzahl
- Package
- SOIC-8
- Series
- PMIC Spannung Referenz
Replacement verdict
Compatible functional replacement candidate
The ADR4520ARZ and ADR4530ARZ share the same series, package, pinout, and output architecture, differing only in fixed output voltage (2.048 V vs. 3.000 V). They are functionally interchangeable where the rail voltage is compatible, but the differing output voltage must be validated against the target circuit's reference requirements before substitution.
Output Voltage
Validation required
Package Type
High match
Output Type
High match
Operating Temperature Range
High match
Parts at a glance
Part B
ADR4520ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2343 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 | ADR4520ARZ | ADR4530ARZ | Why it matters |
|---|---|---|---|
| Output Voltage | 2.048 V | 3.000 V | The nominal reference voltage directly sets the full-scale input range of an ADC or DAC; a different value changes the system's measurement span and cannot be substituted without recalibration. |
| Initial Accuracy | ±0.02% | ±0.02% | Initial accuracy determines the untrimmed error at room temperature; matching accuracy means both parts offer the same baseline precision. |
| Temperature Coefficient | 2 ppm/°C (max) | 2 ppm/°C (max) | Drift over temperature governs accuracy across the operating range; identical tempco means comparable stability in precision applications. |
| Output Current Capability | ±10 mA | ±10 mA | Source/sink current capability determines how much load the reference can drive while maintaining regulation; equal ratings mean similar load-driving flexibility. |
| Supply Voltage Range | 3.0 V to 15 V | 3.0 V to 15 V | The allowable supply range must accommodate the system rail; identical ranges mean the same power supply constraints apply to both parts. |
| Supply Current | 950 µA (typ) | 950 µA (typ) | Quiescent current affects total power budget in low-power designs; matching current draw means equivalent power consumption. |
| Output Noise (0.1 Hz to 10 Hz) | 1.25 µV p-p (typ) | 1.25 µV p-p (typ) | Low-frequency noise limits resolution in precision measurement; identical noise performance means comparable signal integrity. |
| Long-Term Drift | 25 ppm/1000 hr (typ) | 25 ppm/1000 hr (typ) | Long-term drift affects calibration intervals and lifetime accuracy; matching drift means similar long-term reliability. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Package and pinout compatibility determine whether a part can be dropped into an existing PCB footprint; identical packages allow direct board-level substitution. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADR4530ARZ | ADR4520ARZ |
|---|---|---|
| Part Status | Active | Active |
| Reference Type | Series | Series |
| Output Type | Fixed | Fixed |
| Voltage - Output (Min/Fixed) | 3V | 2.048V |
| Current - Output | 10 mA | 10 mA |
| Tolerance | ±0.04% | ±0.04% |
| Temperature Coefficient | 4ppm/°C | 4ppm/°C |
| Noise - 01 Hzto10 Hz | 1.6µVp-p | 1µVp-p |
| Voltage - Input | 3.1V ~ 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 ADR4520ARZ and ADR4530ARZ voltage references?
The primary difference is the output voltage: the ADR4520ARZ provides a 2.048 V output, while the ADR4530ARZ provides a 3.000 V output. Both are members of the ADR4520/ADR4530/ADR4540/ADR4550 family of high-precision, low-noise, low-drift voltage references from Analog Devices, and both are offered in the same 8-lead SOIC package (RZ suffix).
Are the ADR4520ARZ and ADR4530ARZ pin-compatible?
Yes. Both devices are specified in the same 8-lead SOIC (R-8) package with identical pin functions, so they are pin-compatible. The difference is the regulated output voltage, not the pinout or footprint.
What initial accuracy and temperature coefficient do these references offer?
Both the ADR4520ARZ and ADR4530ARZ are A-grade devices with an initial accuracy of ±0.02% (maximum) and a temperature coefficient of 1 ppm/°C (typical) and 2 ppm/°C (maximum) over the specified temperature range, per the Analog Devices datasheet.
What is the output noise performance of the ADR4520ARZ and ADR4530ARZ?
Both devices feature low output noise of 1.25 µV p-p (0.1 Hz to 10 Hz) typical, making them suitable for precision data acquisition and instrumentation applications. The noise specification is common across the ADR4520/ADR4530/ADR4540/ADR4550 family.
What supply voltage and current do these references require?
Both devices operate from a supply voltage of 3.0 V to 15 V and typically draw 950 µA of quiescent current. The ADR4530ARZ requires a supply voltage at least equal to its 3.000 V output plus the specified dropout, so a supply of 3.0 V or higher is required for proper regulation.
Can the ADR4520ARZ and ADR4530ARZ be used interchangeably in a design?
They are pin-compatible but not electrically interchangeable, because they provide different output voltages (2.048 V vs. 3.000 V). A design substitution requires verifying that the system's reference voltage, ADC/DAC full-scale range, and supply headroom are compatible with the alternate output voltage.
What are the operating temperature ranges for these voltage references?
Both the ADR4520ARZ and ADR4530ARZ are specified for the extended industrial temperature range of −40°C to +125°C, per the Analog Devices datasheet.