Overview
The ADA4522-1ARMZ-R7 is a single-channel, zero-drift operational amplifier (op-amp) produced by Analog Devices Inc. This device is optimized for total accuracy over time, temperature, and voltage conditions, making it ideal for a wide range of precision applications. It features low noise and power consumption, ground sensing inputs, and rail-to-rail output. The ADA4522-1 is designed to amplify very small input signals and accurately reproduce larger signals, thanks to its high open-loop gain and very low DC and AC errors.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 1 |
| Operating Voltage Range | 4.5V to 55V, ±2.25V to ±27.5V |
| Input Offset Voltage | 5µV maximum (VSY = 5V, VCM = VSY/2 V, TA = 25°C) |
| Input Offset Voltage Drift | 15nV/°C maximum (VSY = 5V, VCM = VSY/2 V, TA = 25°C) |
| Input Bias Current | 150pA max (VSY=5V, VCM = VSY/2 V, TA=25°C) |
| Input Offset Current | 250pA max (VSY=5V, VCM = VSY/2 V, TA=25°C) |
| Bandwidth | 6.5MHz typical −3dB closed-loop bandwidth (VIN=10mV p-p, RL=10Kohm, CL=50pF, AV=1, VSY=5V, TA=25°C) |
| Slew Rate | 1.4V/µs typical at RL = 10Kohm, CL = 50pF, AV = 1, VS = 5V, VCM = 2.5V, TA = 25°C |
| Common Mode Rejection Ratio (CMRR) | 155dB (VCM = 0 to 3.5V, VSY = 5V, TA = 25°C) |
| Package | 8-lead MSOP |
| Temperature Range | -40°C to +125°C |
Key Features
- Single-supply operation with input voltage range including ground and rail-to-rail output.
- Integrated EMI filters for high immunity to electromagnetic interference (EMI).
- Unity-gain stable.
- On-chip filtering to achieve high EMI immunity.
- Low noise and power consumption.
- Ground sensing inputs.
- Thermal shutdown circuit to prevent overheating.
- Input protection against overvoltage conditions.
Applications
- Inductance, capacitance, and resistance (LCR) meter/megohmmeter front-end amplifiers.
- Load cell and bridge transducers.
- Magnetic force balance scales.
- High precision shunt current sensing.
- Thermocouple/RTD sensors.
- Programmable logic controller input and output amplifiers.
Q & A
- What is the operating voltage range of the ADA4522-1ARMZ-R7?
The ADA4522-1ARMZ-R7 operates over a voltage range of 4.5V to 55V and can also handle dual supplies of ±2.25V to ±27.5V.
- What is the input offset voltage of the ADA4522-1ARMZ-R7?
The input offset voltage is 5µV maximum at VSY = 5V, VCM = VSY/2 V, and TA = 25°C.
- What is the slew rate of the ADA4522-1ARMZ-R7?
The slew rate is 1.4V/µs typical at RL = 10Kohm, CL = 50pF, AV = 1, VS = 5V, VCM = 2.5V, and TA = 25°C.
- What is the common mode rejection ratio (CMRR) of the ADA4522-1ARMZ-R7?
The CMRR is 155dB (VCM = 0 to 3.5V, VSY = 5V, TA = 25°C).
- What is the temperature range of the ADA4522-1ARMZ-R7?
The device operates over a temperature range of -40°C to +125°C.
- Does the ADA4522-1ARMZ-R7 have integrated EMI filters?
Yes, the ADA4522-1ARMZ-R7 has integrated EMI filters to achieve high immunity to electromagnetic interference (EMI).
- What is the typical bandwidth of the ADA4522-1ARMZ-R7?
The typical bandwidth is 6.5MHz at VIN=10mV p-p, RL=10Kohm, CL=50pF, AV=1, VSY=5V, and TA=25°C.
- Can the ADA4522-1ARMZ-R7 drive capacitive loads?
Yes, the device can safely drive capacitive loads of up to 250 pF. Driving larger loads may require external compensation to prevent oscillation.
- What is the package type of the ADA4522-1ARMZ-R7?
The device is packaged in an 8-lead MSOP package.
- Does the ADA4522-1ARMZ-R7 have thermal shutdown protection?
Yes, the device has a thermal shutdown circuit to prevent overheating.
