Overview
The AD823AARMZ is a dual voltage feedback amplifier produced by Analog Devices Inc. It features an N-channel JFET input stage and a rail-to-rail bipolar output stage, making it highly versatile for various analog signal processing applications. The amplifier is designed for single-supply operation and can handle supply voltages ranging from 3 V to 36 V. Its high impedance FET input and rail-to-rail output capabilities make it particularly useful in driving both the analog input and reference input of analog-to-digital converters (ADCs) in single-supply systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Supply Voltage | 3 | 36 | V | |
| Input Resistance | 1013 | Ω | ||
| Input Capacitance (Differential Mode) | 0.6 | pF | ||
| Common-Mode Rejection Ratio (VCM = 0 V to 3 V) | 60 | 73 | dB | |
| Output Voltage Swing (IL = ±100 µA) | 0.009 | 4.98 | V | |
| Linear Output Current (VOUT = 0.5 V to 4.5 V) | 40 | mA | ||
| Short-Circuit Current Sourcing to 2.5 V | 50 | mA | ||
| Short-Circuit Current Sinking to 2.5 V | 101 | mA | ||
| Capacitive Load Drive (G = +1) | 500 | pF | ||
| Quiescent Current (TMIN to TMAX, total) | 5.1 | 5.7 | mA | |
| Power Supply Rejection Ratio (VS = 5 V to 15 V, TMIN to TMAX) | 70 | 94 | dB | |
| Operating Temperature Range | -40 | 85 | °C |
Key Features
- Single-Supply Operation: The AD823AARMZ operates from a single supply voltage ranging from 3 V to 36 V.
- Rail-to-Rail Output: The amplifier features a rail-to-rail bipolar output stage, maximizing the output range and providing up to 40 mA linear drive current.
- High Impedance FET Input: The N-channel JFET input stage offers high input resistance and low input current, making it suitable for minimal loading of high output impedance devices.
- Capacitive Load Drive: The amplifier can drive capacitive loads up to 500 pF with a gain of +1.
- High Speed Performance: It has a -3 dB bandwidth of 16.5 MHz to 19 MHz and a slew rate of 31 V/µs to 35 V/µs.
- Low Noise and Distortion: The amplifier exhibits low input voltage noise and high common-mode rejection ratio, ensuring minimal distortion and noise in the output signal.
Applications
- A/D Driver: The AD823AARMZ is particularly useful as a driver for analog-to-digital converters (ADCs) in single-supply systems, driving both the analog input and reference input.
- Signal Conditioning: It is suitable for various signal conditioning applications due to its high impedance input and rail-to-rail output capabilities.
- Audio and Medical Equipment: The amplifier's low noise and high common-mode rejection ratio make it suitable for use in audio equipment and medical devices.
- Industrial Control Systems: It can be used in industrial control systems where high accuracy and reliability are required.
Q & A
- What is the operating supply voltage range of the AD823AARMZ?
The AD823AARMZ operates from a single supply voltage ranging from 3 V to 36 V.
- What is the input resistance of the AD823AARMZ?
The input resistance is 1013 Ω.
- What is the common-mode rejection ratio of the AD823AARMZ?
The common-mode rejection ratio is 60 dB to 73 dB for VCM = 0 V to 3 V.
- What is the maximum linear output current of the AD823AARMZ?
The maximum linear output current is 40 mA.
- Can the AD823AARMZ drive capacitive loads?
Yes, it can drive capacitive loads up to 500 pF with a gain of +1.
- What is the -3 dB bandwidth of the AD823AARMZ?
The -3 dB bandwidth is 16.5 MHz to 19 MHz.
- What is the slew rate of the AD823AARMZ?
The slew rate is 31 V/µs to 35 V/µs.
- What are the typical applications of the AD823AARMZ?
It is commonly used as an A/D driver, in signal conditioning, audio and medical equipment, and industrial control systems.
- What is the operating temperature range of the AD823AARMZ?
The operating temperature range is -40°C to 85°C.
- Is the AD823AARMZ RoHS compliant?
Yes, the AD823AARMZ is RoHS compliant.
