ADR4520
Ultra-Low-Noise, High-Accuracy 2.048V Voltage Reference
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Features
- Maximum temperature coefficient (TCVOUT):
- 0.8 ppm/°C (D grade 0°C to 70°C)
- 1 ppm/°C (C grade 0°C to 70°C)
- 2 ppm/°C (B grade −40°C to +125°C)
- 4 ppm/°C (A grade −40°C to +125°C)
- Output noise (0.1 Hz to 10 Hz):
- 1 μV p-p at VOUT of 2.048 V typical
- Initial output voltage error:
- B, C, D grade: ±0.02% (maximum)
- Input voltage range: 3 V to 15 V
- Operating temperature:
- A grade and B grade: −40°C to +125°C
- C grade and D grade: 0°C to +70°C
- Output current: +10 mA source/−10 mA sink
- Low quiescent current: 950 μA (maximum)
- Low dropout voltage: 300 mV at 2 mA (VOUT ≥ 3 V)
- 8-lead SOIC package and LCC package
- AEC-Q100 qualified for automotive applications
- Long-term drift: 8 ppm typical at 4500 hours
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The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 devices are high precision, low power, low noise voltage references featuring ±0.02% B, C, and D grade maximum initial error, excellent temperature stability, and low output noise.
This family of voltage references uses an innovative core topology to achieve high accuracy while offering industry-leading temperature stability and noise performance. The low, thermally induced output voltage hysteresis and low long-term output voltage drift of the devices also improve system accuracy over time and temperature variations.
A maximum operating current of 950 μA and a maximum low dropout voltage of 300 mV allow the devices to function very well in portable equipment.
The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 series of references are each provided in an 8-lead SOIC and are available in a wide range of output voltages, all of which are specified over the extended industrial temperature range of −40°C to +125°C.
The ADR4525, ADR4540, and ADR4550 are also available in D, which are in 8 lead LCC package, and C grade with a temperature range of 0°C to 70°C. The ADR4525W, available in an 8‑lead SOIC package, is qualified for automotive applications.
Applications
- Precision data acquisition systems
- High resolution data converters
- High precision measurement devices
- Industrial instrumentation
- Medical devices
- Automotive battery monitoring
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ADR4520
Documentation
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Data Sheet
3
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550: Ultralow Noise, High Accuracy Voltage References Data Sheet (Rev.F)
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550：超低噪声、高精度 基准电压源
Documentation
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADR4520ARZ |
8-Lead SOIC
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| ADR4520ARZ-R7 |
8-Lead SOIC
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| ADR4520BRZ |
8-Lead SOIC
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| ADR4520BRZ-R7 |
8-Lead SOIC
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- ADR4520ARZ
- Pin/Package Drawing
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8-Lead SOIC
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- ADR4520ARZ-R7
- Pin/Package Drawing
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8-Lead SOIC
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- ADR4520BRZ
- Pin/Package Drawing
-
8-Lead SOIC
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- ADR4520BRZ-R7
- Pin/Package Drawing
-
8-Lead SOIC
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
Software & Part Ecosystem
| Parts | Product Life Cycle | Description | ||
|---|---|---|---|---|
|
Positive Linear Regulators (LDO)1 |
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RECOMMENDED FOR NEW DESIGNS |
20V, 200mA, Ultralow Noise, Ultrahigh PSRR Precision DAC/Reference Buffer |
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Tools & Simulations 2
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Lt Spice
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