Overview
The ADA4528-2ARMZ is a precision, ultralow noise, zero-drift operational amplifier produced by Analog Devices Inc. This dual-channel amplifier is designed for high-precision instrumentation and signal conditioning applications. It features rail-to-rail input and output swing, making it ideal for applications where error sources cannot be tolerated. The ADA4528-2ARMZ is characterized by its extremely low offset voltage and drift, low noise performance, and high gain, making it suitable for a wide range of precision applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Offset Voltage | 2.5 | μV | ||
| Offset Voltage Drift | 0.015 | μV/°C | ||
| Noise Density at 1 kHz | 5.6 | nV/√Hz | ||
| Noise (0.1 Hz to 10 Hz, AV = +100) | 97 | nV p-p | ||
| Open-Loop Gain | 130 | dB | ||
| Common-Mode Rejection Ratio (CMRR) | 135 | dB | ||
| Power Supply Rejection Ratio (PSRR) | 130 | dB | ||
| Unity-Gain Crossover Frequency | 4 | MHz | ||
| Gain Bandwidth Product (GBP) at AV = +100 | 3 | MHz | ||
| −3 dB Closed-Loop Bandwidth | 6.2 | MHz | ||
| Supply Voltage Range (Single Supply) | 2.2 | 5.5 | V | |
| Supply Voltage Range (Dual Supply) | ±1.1 | ±2.75 | V | |
| Supply Current per Amplifier | 1.5 | 1.8 | 2.2 | mA |
| Slew Rate | 0.5 | V/μs | ||
| Settling Time to 0.1% | 10 | μs |
Key Features
- Low Offset Voltage: Maximum of 2.5 μV and drift of 0.015 μV/°C, ensuring high precision in signal amplification.
- Low Noise Performance: Noise density of 5.6 nV/√Hz at 1 kHz and peak-to-peak noise of 97 nV from 0.1 Hz to 10 Hz.
- High Gain and Rejection Ratios: Open-loop gain of 130 dB, CMRR of 135 dB, and PSRR of 130 dB.
- Rail-to-Rail Input and Output Swing: Allows for full signal swing from the supply rails.
- Wide Operating Supply Range: Single supply from 2.2 V to 5.5 V and dual supply from ±1.1 V to ±2.75 V.
- High Gain Bandwidth Product: 3 MHz at AV = +100.
- Unity-Gain Stable: Stable in unity-gain configuration.
- Compact Packaging: Available in 8-lead MSOP and 8-lead LFCSP packages.
Applications
- Precision Instrumentation: Ideal for applications requiring high precision and low noise.
- Data Acquisition Systems: Suitable for accurate signal conditioning and amplification.
- Medical Equipment: Used in medical devices due to its low offset voltage, low noise, and high precision.
- Industrial Control Systems: Applied in industrial control systems that require accurate signal processing.
- Test and Measurement Equipment: Utilized in test and measurement equipment for precise signal amplification.
- Automotive Applications: Used in automotive systems that require accurate signal conditioning and amplification.
Q & A
- What is the maximum input offset voltage of the ADA4528-2ARMZ?
The maximum input offset voltage is 2.5 μV.
- What is the offset voltage drift of the ADA4528-2ARMZ?
The offset voltage drift is 0.015 μV/°C.
- What is the noise density of the ADA4528-2ARMZ at 1 kHz?
The noise density is 5.6 nV/√Hz at 1 kHz.
- What is the gain bandwidth product of the ADA4528-2ARMZ at AV = +100?
The gain bandwidth product is 3 MHz at AV = +100.
- What is the supply voltage range for the ADA4528-2ARMZ in single supply operation?
The supply voltage range is from 2.2 V to 5.5 V.
- What is the supply voltage range for the ADA4528-2ARMZ in dual supply operation?
The supply voltage range is from ±1.1 V to ±2.75 V.
- What is the typical supply current per amplifier for the ADA4528-2ARMZ?
The typical supply current per amplifier is 1.8 mA.
- What is the slew rate of the ADA4528-2ARMZ?
The slew rate is 0.5 V/μs.
- What is the settling time to 0.1% for the ADA4528-2ARMZ?
The settling time to 0.1% is 10 μs.
- In what types of applications is the ADA4528-2ARMZ commonly used?
The ADA4528-2ARMZ is commonly used in precision instrumentation, data acquisition systems, medical equipment, industrial control systems, test and measurement equipment, and automotive applications.
