Overview
The ADR4533BRZ is a high-precision, ultra-low-noise, and high-accuracy 3.3V voltage reference produced by Analog Devices Inc. This device is part of the ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 family, known for its innovative core topology that achieves high accuracy and industry-leading temperature stability and noise performance.
Designed for a wide range of applications, the ADR4533BRZ offers excellent temperature stability, low output noise, and low long-term output voltage drift. It is particularly suited for use in portable equipment due to its low power consumption and low dropout voltage.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VOUT | VIN = 3.4 V to 15 V, IL = 0 mA, TA = 25°C | 3.300 | V | ||
| Initial Output Voltage Error | VOUT_ERR | B Grade | ±0.02% | 660 µV | ||
| Temperature Coefficient | TCVOUT | B Grade, −40°C ≤ TA ≤ +125°C | 2 ppm/°C | |||
| Maximum Operating Current | IOUT | 950 µA | ||||
| Low Dropout Voltage | VDO | −40°C ≤ TA ≤ +125°C, no load | 1 V | |||
| Ripple Rejection Ratio | RRR | fIN = 1 kHz | 90 dB | |||
| Output Voltage Noise (0.1 Hz to 10 Hz) | eNp-p | 1.0 µV p-p | ||||
| Output Voltage Noise Density at 1 kHz | eN | 35.8 nV/√Hz | ||||
| Output Voltage Hysteresis | ΔVOUT_HYS | TA = temperature cycled from +25°C to −40°C to +125°C and back to +25°C | 50 ppm | |||
| Long-Term Drift | ΔVOUT_LTD | 1000 hours at 60°C | 25 ppm | |||
| Turn-On Settling Time | tR | IL = 0 mA, CL = 1 µF, CIN = 0.1 µF, RL = 1 kΩ | 160 µs | |||
| Operating Temperature Range | TA | −40°C | +125°C | °C |
Key Features
- High precision with ±0.02% maximum initial error for B, C, and D grades.
- Ultra-low noise performance with 1.0 µV p-p output voltage noise from 0.1 Hz to 10 Hz and 35.8 nV/√Hz output voltage noise density at 1 kHz.
- Excellent temperature stability with a temperature coefficient of 2 ppm/°C for B grade over −40°C to +125°C.
- Low long-term output voltage drift of 25 ppm over 1000 hours at 60°C.
- Low thermally induced output voltage hysteresis of 50 ppm.
- Maximum operating current of 950 µA and low dropout voltage of 1 V.
- Available in an 8-lead SOIC package.
- Wide operating temperature range of −40°C to +125°C.
Applications
The ADR4533BRZ is suitable for a variety of applications that require high precision and low noise voltage references. These include:
- Portable equipment due to its low power consumption and low dropout voltage.
- High-accuracy measurement and instrumentation systems.
- Medical devices requiring stable and precise voltage references.
- Aerospace and defense applications where reliability and precision are critical.
- Industrial control systems and automation.
Q & A
- What is the output voltage of the ADR4533BRZ?
The output voltage of the ADR4533BRZ is 3.3V.
- What is the maximum initial error for the B grade of the ADR4533BRZ?
The maximum initial error for the B grade is ±0.02%.
- What is the temperature coefficient for the B grade of the ADR4533BRZ?
The temperature coefficient for the B grade is 2 ppm/°C over −40°C to +125°C.
- What is the maximum operating current of the ADR4533BRZ?
The maximum operating current is 950 µA.
- What is the low dropout voltage of the ADR4533BRZ?
The low dropout voltage is 1 V.
- What is the output voltage noise of the ADR4533BRZ from 0.1 Hz to 10 Hz?
The output voltage noise is 1.0 µV p-p from 0.1 Hz to 10 Hz.
- What is the long-term drift of the ADR4533BRZ over 1000 hours at 60°C?
The long-term drift is 25 ppm over 1000 hours at 60°C.
- In what package is the ADR4533BRZ available?
The ADR4533BRZ is available in an 8-lead SOIC package.
- What is the operating temperature range of the ADR4533BRZ?
The operating temperature range is −40°C to +125°C.
- What are some typical applications for the ADR4533BRZ?
Typical applications include portable equipment, high-accuracy measurement and instrumentation systems, medical devices, aerospace and defense applications, and industrial control systems.
