Overview
The AD823AARZ, produced by Analog Devices Inc., is a dual voltage feedback amplifier featuring an N-channel JFET input stage and a rail-to-rail bipolar output stage. This amplifier is designed to provide high precision and versatility, making it suitable for a wide range of applications. Fabricated on Analog Devices' XFCB process, it combines high-speed 36 V bipolar devices with JFETs and thin film resistors, ensuring optimal performance across various operating conditions.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Range | 3 | 36 | V | |
| Quiescent Current (TMIN to TMAX) | 5.0 | 5.7 | 6.3 | mA |
| Power Supply Rejection Ratio (VS = 5 V to 15 V) | 70 | 94 | dB | |
| Input Resistance | 1013 | Ω | ||
| Input Capacitance (Differential Mode) | 0.6 | pF | ||
| Common-Mode Rejection Ratio (VCM = -15 V to +13 V) | 70 | 90 | dB | |
| Output Voltage Swing (IL = ±100 µA) | -14.9 | +14.96 | V | |
| Linear Output Current (VOUT = -14.5 V to +14.5 V) | 44 | mA | ||
| Short-Circuit Current (Sourcing to 0 V) | 78 | mA | ||
| Short-Circuit Current (Sinking to 0 V) | 124 | mA | ||
| Capacitive Load Drive (G = +1) | 500 | pF | ||
| -3 dB Bandwidth (G = +1, VOUT ≤ 0.2 V p-p) | 16.5 | 19 | MHz | |
| Slew Rate (G = -1, VOUT = 10 V step) | 31 | 35 | V/µs | |
| Settling Time to 0.1% (G = -1, VOUT = 10 V step) | 380 | ns | ||
| Settling Time to 0.01% (G = -1, VOUT = 10 V step) | 510 | ns |
Key Features
- N-channel JFET Input Stage: Handles signals up to 200 mV below the negative supply while maintaining picoamp level input currents.
- Rail-to-Rail Bipolar Output Stage: Maximizes the amplifier’s output range, providing up to 40 mA linear drive current with output voltages within 0.5 V of either power rail.
- High Speed and Precision: Features 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: Input voltage noise of 13 nV/√Hz at 10 kHz and low input bias currents below 25 pA.
- Wide Operating Range: Operates over a supply voltage range of 3 V to 36 V and an operating temperature range of -40°C to +85°C.
- High Common-Mode Rejection Ratio (CMRR): Up to 90 dB, ensuring good rejection of common-mode signals.
- Capacitive Load Drive: Can drive up to 500 pF of direct capacitive load.
Applications
- Instrumentation Amplifiers: Suitable for precision measurement and signal conditioning in various instrumentation applications.
- Medical Devices: Can be used in medical instrumentation due to its high precision and low noise characteristics.
- Industrial Control Systems: Applicable in control systems requiring high accuracy and reliability.
- Audio Equipment: Used in audio amplifiers and signal processing due to its high bandwidth and low distortion.
- Automotive Systems: Suitable for automotive applications requiring robust and reliable signal amplification.
Q & A
- What is the operating voltage range of the AD823AARZ?
The AD823AARZ operates over a supply voltage range of 3 V to 36 V.
- What is the typical quiescent current of the AD823AARZ?
The typical quiescent current is between 5.0 mA and 5.7 mA.
- What is the common-mode rejection ratio (CMRR) of the AD823AARZ?
The CMRR is up to 90 dB.
- What is the maximum linear output current of the AD823AARZ?
The maximum linear output current is 44 mA.
- What is the -3 dB bandwidth of the AD823AARZ?
The -3 dB bandwidth is between 16.5 MHz and 19 MHz.
- What is the slew rate of the AD823AARZ?
The slew rate is between 31 V/µs and 35 V/µs.
- Can the AD823AARZ drive capacitive loads?
Yes, it can drive up to 500 pF of direct capacitive load.
- What is the input resistance of the AD823AARZ?
The input resistance is 1013 Ω.
- What is the operating temperature range of the AD823AARZ?
The operating temperature range is -40°C to +85°C.
- What are some common applications of the AD823AARZ?
Common applications include instrumentation amplifiers, medical devices, industrial control systems, audio equipment, and automotive systems.
