AD823ARZ - Dual 16MHz JFET Op Amp | Analog Devices
MPN: AD823ARZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.77 | $6.77 |
| 10 | $6.1 | $61.00 |
| 100 | $5.42 | $542.00 |
| 500 | $4.88 | $2,440.00 |
| 1,000 | $4.39 | $4,390.00 |
Drop-in alternatives for AD823ARZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD823AARZ
✅ Drop-In📋 Reference alternative (not in catalog)
AD823ARZ-RL
✅ Drop-In📋 Reference alternative (not in catalog)
AD823ARZ-R7
✅ Drop-In📋 Reference alternative (not in catalog)
AD8628ARZ
✅ Drop-In✓ In Stock
$1 / Unit
View Datasheet →AD823ARZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Gain Bandwidth Product | 16 MHz |
| Slew Rate | 25 V/µs |
| Supply Voltage (Single) | 3 V to 36 V |
| Supply Voltage (Dual) | ±1.5 V to ±18 V |
| Input Voltage Range | Extends below ground (single-supply) |
| Output Type | Rail-to-Rail |
| Output Current | 15 mA (0.5 V from supplies) |
| Capacitive Load Drive | 500 pF (G = +1) |
| Quiescent Current (per amp) | 2.6 mA |
| Input Bias Current | [DATA_NEEDED: Input Bias Current] |
| Input Offset Voltage | [DATA_NEEDED: Input Offset Voltage] |
| Operating Temperature Range | -40°C to +85°C |
| Package | 8-SOIC (SOIC-8) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
AD823ARZ Pin Configuration
| Pin 1 | OUT A — Output of amplifier A |
| Pin 2 | -IN A — Inverting input of amplifier A |
| Pin 3 | +IN A — Non-inverting input of amplifier A |
| Pin 4 | V- — Negative supply (or ground in single-supply) |
| Pin 5 | +IN B — Non-inverting input of amplifier B |
| Pin 6 | -IN B — Inverting input of amplifier B |
| Pin 7 | OUT B — Output of amplifier B |
| Pin 8 | V+ — Positive supply |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD823ARZ is suitable for 6 applications: Photodiode Amplifier, Active Filter, Data Acquisition System, Audio Preamplifier, Sensor Interface, Test and Measurement.
Photodiode Amplifier
The AD823ARZ's JFET input provides high input impedance and low bias current, making it ideal for transimpedance amplifiers that convert photodiode current to voltage. Its 16 MHz bandwidth supports high-speed optical sensing, and the rail-to-rail output maximizes dynamic range. In a typical circuit, the photodiode is connected between the inverting input and ground, with a feedback resistor setting the gain. The low input bias current minimizes DC offset errors, while the wide bandwidth ensures fast response to light pulses. This configuration is used in optical communication, medical imaging, and industrial sensors.
Recommended
Active Filter
The AD823ARZ is well-suited for active filter designs, such as Sallen-Key low-pass or high-pass filters, due to its 16 MHz gain bandwidth product and low distortion. Its rail-to-rail output allows the filter to handle signals close to the supply rails, which is beneficial in single-supply systems. The dual amplifier configuration enables implementing a second-order filter with a single IC, saving board space. For example, a 1 MHz low-pass filter can be built with the AD823ARZ and a few passive components. The high slew rate ensures that large signal swings do not introduce distortion, maintaining signal integrity.
Recommended
Data Acquisition System
In data acquisition systems, the AD823ARZ can buffer and condition analog signals before ADC conversion. Its high input impedance prevents loading of sensors, and the rail-to-rail output allows full-scale drive to the ADC input. The 16 MHz bandwidth supports sampling rates up to several MSPS, making it suitable for high-speed DAQ. The low quiescent current is advantageous in multi-channel systems where power dissipation is a concern. The dual amplifier can be used for differential signaling or to process two channels simultaneously, reducing component count and cost.
Recommended
Audio Preamplifier
The AD823ARZ is an excellent choice for audio preamplifiers due to its low distortion, wide bandwidth, and rail-to-rail output. It can amplify low-level signals from microphones or magnetic pickups without introducing significant noise. The JFET input provides high input impedance, preserving the tone of passive pickups. The dual amplifier can be used for stereo channels, providing a compact solution. With a supply voltage of ±15V, the AD823ARZ can deliver clean audio signals with good headroom. Its 16 MHz bandwidth ensures that audio frequencies are amplified without phase shift or attenuation.
Recommended
Sensor Interface
The AD823ARZ is ideal for interfacing with high-impedance sensors such as pH probes, piezoelectric sensors, and gas sensors. Its JFET input offers extremely high input impedance, minimizing loading effects and preserving sensor accuracy. The low input bias current reduces offset errors caused by source resistance. The wide supply range allows operation from battery voltages to industrial rails. The rail-to-rail output enables direct connection to ADCs or comparators. In a typical sensor interface, the AD823ARZ is configured as a buffer or amplifier, providing a clean, amplified signal for further processing.
Recommended
Test and Measurement
In test and measurement equipment, the AD823ARZ is used in oscilloscope front-ends, signal generators, and precision measurement circuits. Its 16 MHz bandwidth and 25 V/µs slew rate enable accurate reproduction of high-frequency waveforms. The high input impedance is essential for probing circuits without loading them. The dual amplifier can be used for differential measurements or to implement active probes. The rail-to-rail output ensures that the amplifier can drive subsequent stages to their full range. The low distortion and noise make it suitable for high-precision measurements.
Recommended
Recommended Products Summary
Engineering reference data for AD823ARZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD823AARZ | AD823ARZ-RL | AD8628ARZ | OPA2134PA |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-DIP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Gain Bandwidth Product | 16 MHz | 16 MHz | 16 MHz | 2.5 MHz | 8 MHz |
| Slew Rate | 25 V/µs | 25 V/µs | 25 V/µs | 2.5 V/µs | 20 V/µs |
| Supply Voltage (Single) | 3 V to 36 V | 3 V to 36 V | 3 V to 36 V | 2.7 V to 5.5 V | ±2.5 V to ±18 V |
| Quiescent Current (per amp) | 2.6 mA | 2.6 mA | 2.6 mA | 1.0 mA | 4.0 mA |
| Input Bias Current | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | 30 pA | 2 pA |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
Key Differentiators
- Wide supply range (3V to 36V single) (vs AD8628ARZ)
- Higher bandwidth (16 MHz vs 2.5 MHz) (vs AD8628ARZ)
- Lower quiescent current (2.6 mA vs 4.0 mA) (vs OPA2134PA)
Design Notes
For optimal performance, decouple the power supply pins with 0.1 µF ceramic capacitors placed as close to the V+ and V- pins as possible. Additionally, a 10 µF tantalum capacitor can be used for bulk decoupling. In single-supply operation, ensure the input common-mode voltage is within the specified range, typically biased to mid-supply for maximum headroom.
Use a solid ground plane under the op amp to minimize noise and parasitic inductance. Keep feedback paths short and direct to reduce stray capacitance. For high-frequency applications, consider using surface-mount components to minimize lead inductance. The SOIC-8 package has a thermal pad that can be soldered to a copper pour for improved heat dissipation.
Do not exceed the absolute maximum supply voltage of 36V (single) or ±18V (dual). The input voltage range extends below ground, but do not apply voltages beyond the supply rails. Ensure the output does not short-circuit for extended periods, as this can cause thermal damage. For capacitive loads above 500 pF, add a series resistor to isolate the output and maintain stability.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
