Overview
The AD824AR-14-REEL, produced by Analog Devices Inc., is a quad, FET input, single supply operational amplifier featuring rail-to-rail outputs. This amplifier is designed for a wide range of low voltage applications where low input current is a critical consideration. It operates from a single supply of 3 V to 30 V or dual supplies of ±1.5 V to ±15 V, making it versatile for various electronic systems. The AD824 is fabricated on Analog Devices' complementary bipolar process, ensuring high precision and low noise, which is particularly beneficial in battery-powered medical equipment and other high-accuracy applications.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | VS | 3 | - | 30 | V |
| Input Bias Current | IB | 2 | 12 | 4000 | pA |
| Input Offset Voltage | VOS | 0.1 | 1.0 | 1.5 | mV |
| Common-Mode Rejection Ratio | CMRR | 60 | 74 | - | dB |
| Bandwidth | - | - | 2 | - | MHz |
| Slew Rate | - | - | 2 | - | V/μs |
| Operating Temperature | - | -40 | - | 85 | °C |
| Package | - | - | - | 14-SOIC | - |
Key Features
- Single Supply Operation: The AD824 can operate from a single supply of 3 V to 30 V or dual supplies of ±1.5 V to ±15 V.
- Low Input Bias Current: Extremely low input bias current of 2 pA, making it suitable for high impedance sources.
- Rail-to-Rail Outputs: The output voltage can swing to within 15 mV of the supply rails.
- Low Power Consumption: Each amplifier consumes a low supply current of 500 μA.
- High Bandwidth and Slew Rate: Features a bandwidth of 2 MHz and a slew rate of 2 V/μs.
- No Phase Reversal: The input stage is designed to prevent phase reversal or latch-up, even when the input voltage exceeds the supply rails.
- Low Noise and High Accuracy: Ideal for high accuracy designs with low noise, making it suitable for medical and precision instrumentation.
Applications
- Photo Diode Preamplifiers: Suitable for amplifying signals from photo diodes due to its low input bias current and high accuracy.
- Battery Powered Instrumentation: Ideal for battery-powered devices due to its low power consumption and single supply operation.
- Medical Instrumentation: Used in portable medical equipment where low noise and high accuracy are crucial.
- Power Supply Control and Protection: Can be used in power supply control circuits due to its rail-to-rail output capability.
- Remote Sensors and High Impedance Transducer Amplifiers: Suitable for amplifying signals from remote sensors and high impedance transducers.
- DAC Output Amplifier and Low Voltage Strain Gage Amplifiers: Used in digital-to-analog converter output amplification and low voltage strain gage applications.
Q & A
- What is the supply voltage range for the AD824AR-14-REEL?
The AD824AR-14-REEL can operate from a single supply of 3 V to 30 V or dual supplies of ±1.5 V to ±15 V.
- What is the input bias current of the AD824AR-14-REEL?
The input bias current is extremely low, typically 2 pA and up to 4000 pA over the temperature range.
- What is the bandwidth of the AD824AR-14-REEL?
The bandwidth of the AD824AR-14-REEL is 2 MHz.
- Does the AD824AR-14-REEL have rail-to-rail outputs?
Yes, the AD824AR-14-REEL features rail-to-rail outputs, allowing the output voltage to swing to within 15 mV of the supply rails.
- What is the slew rate of the AD824AR-14-REEL?
The slew rate of the AD824AR-14-REEL is 2 V/μs.
- Is the AD824AR-14-REEL suitable for medical instrumentation?
Yes, it is suitable for medical instrumentation due to its low noise, high accuracy, and low power consumption.
- What is the operating temperature range of the AD824AR-14-REEL?
The operating temperature range is -40°C to 85°C.
- What is the package type of the AD824AR-14-REEL?
The package type is 14-SOIC (Small Outline Integrated Circuit).
- Does the AD824AR-14-REEL have any phase reversal issues?
No, the AD824AR-14-REEL is designed to prevent phase reversal or latch-up, even when the input voltage exceeds the supply rails.
- Can the AD824AR-14-REEL handle capacitive loads?
Yes, it can handle capacitive loads up to 350 pF without oscillation.
