Overview
The ADA4528-1ARMZ from Analog Devices Inc. is an ultralow noise, zero-drift operational amplifier. It features rail-to-rail input and output swing, making it ideal for applications requiring high precision and minimal error. With an offset voltage of 2.5 μV and an offset voltage drift of 0.015 μV/°C, this amplifier is well-suited for applications where error sources cannot be tolerated. The ADA4528-1ARMZ operates over a wide supply range of 2.2 V to 5.5 V for single-supply and ±1.1 V to ±2.75 V for dual-supply, and is specified over the extended industrial temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Offset Voltage | - | - | 2.5 | μV |
| Offset Voltage Drift | - | - | 0.015 | μV/°C |
| Voltage Noise (0.1 Hz to 10 Hz, AV = +100) | - | - | 97 | nV p-p |
| Voltage Noise Density (at 1 kHz, AV = +100) | - | - | 5.6 | nV/√Hz |
| Open-Loop Gain | 130 | - | - | dB |
| CMRR | 135 | - | - | dB |
| PSRR | 130 | - | - | dB |
| Gain Bandwidth Product | - | - | 3 | MHz (at AV = +100) |
| -3 dB Closed-Loop Bandwidth | - | - | 6.2 | MHz (at AV = +1) |
| 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 |
Key Features
- Ultralow Noise: 5.6 nV/√Hz at 1 kHz, AV = +100, and 97 nV p-p from 0.1 Hz to 10 Hz.
- Zero-Drift: Offset voltage drift of 0.015 μV/°C.
- Rail-to-Rail Input and Output: Full input and output swing capabilities.
- High Gain and Stability: Open-loop gain of 130 dB minimum and unity-gain stable.
- Excellent CMRR and PSRR: CMRR of 135 dB minimum and PSRR of 130 dB minimum.
- Wide Operating Supply Range: Single-supply operation from 2.2 V to 5.5 V and dual-supply operation from ±1.1 V to ±2.75 V.
- Extended Industrial Temperature Range: Specified from −40°C to +125°C.
- Compact Packaging: Available in 8-lead MSOP and 8-lead LFCSP packages.
Applications
- Thermocouple and Thermopile Amplification: Ideal for precise temperature measurements.
- Load Cell and Bridge Transducers: Suitable for precision instrumentation and measurement systems.
- Precision Instrumentation: Used in electronic scales, medical instrumentation, and handheld test equipment.
- Position and Pressure Sensors: Amplifies low-level signals from sensors accurately.
- Strain Gages and Medical Instrumentation: Provides high precision and low noise amplification.
Q & A
- What is the offset voltage of the ADA4528-1ARMZ?
The offset voltage of the ADA4528-1ARMZ is 2.5 μV maximum.
- What is the offset voltage drift of the ADA4528-1ARMZ?
The offset voltage drift is 0.015 μV/°C maximum.
- What is the voltage noise density of the ADA4528-1ARMZ at 1 kHz?
The voltage noise density at 1 kHz is 5.6 nV/√Hz.
- What is the CMRR of the ADA4528-1ARMZ?
The CMRR is 135 dB minimum.
- What is the PSRR of the ADA4528-1ARMZ?
The PSRR is 130 dB minimum.
- What is the gain bandwidth product of the ADA4528-1ARMZ?
The gain bandwidth product is 3 MHz at AV = +100.
- What is the operating supply voltage range for the ADA4528-1ARMZ?
The ADA4528-1ARMZ operates from 2.2 V to 5.5 V for single-supply and ±1.1 V to ±2.75 V for dual-supply.
- What are the typical applications of the ADA4528-1ARMZ?
Typical applications include thermocouple and thermopile amplification, load cell and bridge transducers, precision instrumentation, electronic scales, medical instrumentation, and handheld test equipment.
- What are the available package types for the ADA4528-1ARMZ?
The ADA4528-1ARMZ is available in 8-lead MSOP and 8-lead LFCSP packages.
- What is the temperature range for which the ADA4528-1ARMZ is specified?
The ADA4528-1ARMZ is specified over the extended industrial temperature range of −40°C to +125°C.
