Overview
The ADA4528-1ARMZ-RL, produced by Analog Devices Inc., is an ultralow noise, zero-drift operational amplifier. It features rail-to-rail input and output swing, making it highly suitable for applications requiring precision amplification of low-level signals. With an exceptionally low offset voltage of 2.5 μV and a low offset voltage drift of 0.015 μV/°C, this op-amp is ideal for use in high-precision instrumentation and measurement systems.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Offset Voltage | VOS | - | - | 2.5 | μV |
| Offset Voltage Drift | TCVOS | - | - | 0.015 | μV/°C |
| Voltage Noise Density | en | - | - | 5.6 | nV/√Hz at f = 1 kHz, AV = +100 |
| Open-Loop Gain | AOL | 130 | - | - | dB |
| Common Mode Rejection Ratio (CMRR) | CMRR | 135 | - | - | dB |
| Power Supply Rejection Ratio (PSRR) | PSRR | 130 | - | - | dB |
| Unity-Gain Crossover Frequency | UGC | - | - | 4 | MHz |
| Gain Bandwidth Product (GBP) | GBP | - | - | 3 | MHz at AV = +100 |
| -3 dB Closed-Loop Bandwidth | f-3dB | - | - | 6.2 | MHz |
| Supply Voltage Range (Single-Supply) | VSY | 2.2 | - | 5.5 | V |
| Supply Current per Amplifier | ISY | 1.5 | 1.8 | 2.2 | mA |
Key Features
- Ultralow noise and zero-drift operation, ensuring high precision in signal amplification.
- Rail-to-rail input and output swing, allowing for full utilization of the supply voltage range.
- Low offset voltage of 2.5 μV and low offset voltage drift of 0.015 μV/°C.
- High gain with a minimum open-loop gain of 130 dB.
- Excellent CMRR and PSRR specifications, ensuring robust performance against common-mode and power supply noise.
- Wide operating supply range from 2.2 V to 5.5 V, suitable for both single-supply and dual-supply operations.
- Unity-gain stable with a unity-gain crossover frequency of 4 MHz.
- High gain bandwidth product of 3 MHz at AV = +100.
Applications
- Thermocouple and thermopile amplification.
- Load cell and bridge transducer applications.
- Precision instrumentation and measurement systems.
- Electronic scales and weighing systems.
- Medical instrumentation, including patient monitoring and diagnostic equipment.
- Handheld test and measurement equipment.
Q & A
- What is the maximum offset voltage of the ADA4528-1ARMZ-RL?
The maximum offset voltage is 2.5 μV.
- What is the offset voltage drift of the ADA4528-1ARMZ-RL?
The offset voltage drift is 0.015 μV/°C.
- What is the voltage noise density of the ADA4528-1ARMZ-RL at 1 kHz?
The voltage noise density is 5.6 nV/√Hz at f = 1 kHz, AV = +100.
- What is the open-loop gain of the ADA4528-1ARMZ-RL?
The minimum open-loop gain is 130 dB.
- What is the CMRR of the ADA4528-1ARMZ-RL?
The CMRR is 135 dB.
- What is the PSRR of the ADA4528-1ARMZ-RL?
The PSRR is 130 dB.
- What is the unity-gain crossover frequency of the ADA4528-1ARMZ-RL?
The unity-gain crossover frequency is 4 MHz.
- What is the gain bandwidth product (GBP) of the ADA4528-1ARMZ-RL at AV = +100?
The GBP is 3 MHz at AV = +100.
- What is the -3 dB closed-loop bandwidth of the ADA4528-1ARMZ-RL?
The -3 dB closed-loop bandwidth is 6.2 MHz.
- What is the supply voltage range for the ADA4528-1ARMZ-RL in single-supply operation?
The supply voltage range is from 2.2 V to 5.5 V.
- What are some typical applications of the ADA4528-1ARMZ-RL?
Typical applications include thermocouple and thermopile amplification, load cell and bridge transducer applications, precision instrumentation, electronic scales, medical instrumentation, and handheld test equipment.
