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 | $4.34 | $4,340.00 |
AD823ARZ Overview
An operational amplifier (op amp) is a high-gain voltage amplifier with differential inputs and a single-ended output. It is a fundamental building block in analog electronics, used in signal conditioning, filtering, and instrumentation. The AD823 is a dual op amp, meaning it contains two independent amplifiers in one package, saving board space and cost. It belongs to the JFET-input op amp family, which offers high input impedance and low input bias current, ideal for interfacing with high-impedance sensors and sources.
Key features of the AD823ARZ include a 16 MHz unity-gain bandwidth, a slew rate of 25 V/µs, and excellent AC performance on a low quiescent current of 2.6 mA per amplifier. The input voltage range extends below ground in single-supply operation, allowing the amplifier to handle signals near or below the negative rail. The rail-to-rail output stage maximizes dynamic range, which is critical in battery-powered and low-voltage systems.
The AD823 uses a JFET input stage with a precision bipolar output stage, providing low offset voltage and low noise. The device is designed for high-speed signal processing, with a fast settling time and low distortion. Its wide supply range and robust output drive make it versatile for both single-supply and dual-supply designs.
Typical applications include photodiode amplification, active filters, data acquisition systems, and audio preamplifiers. The AD823's high input impedance and low bias current are particularly suited for transimpedance amplifiers and sensor interfaces. Its rail-to-rail output and wide bandwidth also make it suitable for driving ADCs and buffering reference voltages.
When designing with the AD823ARZ, ensure proper decoupling of the power supply pins with 0.1 µF ceramic capacitors placed close to the device. The input voltage range extends below ground, but do not exceed the absolute maximum ratings. For single-supply operation, bias the inputs to mid-supply to maximize headroom.
Drop-in alternatives for AD823ARZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with AD823ARZ (same form factor and footprint) — differing in Slew Rate, Amplifier Type, Current - Input Bias, Current - Supply, Gain Bandwidth Product.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD823AARZ
✅ Drop-In📋 Reference alternative (not in catalog)
AD8622ARZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.93 / Unit
View Datasheet →AD8642ARZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TLE2072CDR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
AD823ARZ Maximum Ratings & Electrical Characteristics
| Amplifier Type | J-FET |
| Number of Circuits | 2 |
| Output Type | Rail-to-Rail |
| Slew Rate | 25 V/µs |
| Gain Bandwidth Product | 16 MHz |
| Current - Input Bias | 10 pA |
| Voltage - Input Offset | 0.5 mV |
| Current - Supply | 2.6 mA (x2 channels) |
| Current - Output / Channel | 15 mA |
| Voltage - Supply, Single/Dual (±) | 3 V ~ 36 V, ±1.5 V ~ ±18 V |
| Operating Temperature | -40°C ~ +85°C |
| Package / Case | 8-SOIC |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Capacitive Load Drive | 500 pF, G = +1 |
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 |
| 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 |
Typical Applications
AD823ARZ is suitable for 6 applications: Photodiode Amplifier, Active Filters, Data Acquisition Systems, Audio Preamplifiers, Sensor Interfaces, Test and Measurement Equipment.
Photodiode Amplifier
The AD823ARZ's low input bias current (10 pA) and high bandwidth (16 MHz) make it ideal for transimpedance amplifiers in photodiode applications. Its JFET input minimizes leakage current, ensuring accurate detection of small photocurrents. The rail-to-rail output maximizes dynamic range, allowing the amplifier to interface directly with ADCs. In a typical circuit, the photodiode is connected between the inverting input and ground, with a feedback resistor setting the transimpedance gain. The low noise and high slew rate preserve fast optical pulses, making it suitable for optical communication and sensing systems.
Recommended
Active Filters
The AD823ARZ's 16 MHz bandwidth and 25 V/µs slew rate enable high-frequency active filters with low distortion. Its dual configuration allows implementing second-order filters in a single package, saving space. The rail-to-rail output ensures maximum signal swing, which is critical in filters operating from low supply voltages. The low input bias current reduces DC offset errors in high-impedance filter networks. Typical applications include anti-aliasing filters in data acquisition systems and audio crossover networks. The wide supply range supports both single-supply and dual-supply filter designs.
Recommended
Data Acquisition Systems
In data acquisition systems, the AD823ARZ serves as a buffer or gain stage before ADCs. Its high input impedance and low bias current prevent loading of sensors, while the rail-to-rail output allows full-scale ADC input range. The 16 MHz bandwidth supports high-speed sampling, and the low distortion preserves signal integrity. The dual configuration allows processing two channels simultaneously, reducing component count. The wide supply range accommodates various system rails, and the 500 pF capacitive load drive ensures stability when driving ADC input capacitors. This makes the AD823ARZ suitable for industrial and instrumentation DAQ systems.
Recommended
Audio Preamplifiers
The AD823ARZ's low noise and high slew rate make it suitable for audio preamplifiers. Its JFET input provides high input impedance, ideal for interfacing with high-impedance sources like electric guitars and condenser microphones. The rail-to-rail output allows maximum headroom in low-voltage audio systems. The 16 MHz bandwidth ensures transparent reproduction of audio frequencies, while the low distortion preserves sound quality. The dual configuration allows stereo preamplifier designs in a single package. The wide supply range supports both battery-powered and line-powered audio equipment.
Recommended
Sensor Interfaces
The AD823ARZ is ideal for sensor interfaces due to its low input bias current and high input impedance. It can amplify signals from high-impedance sensors such as pH probes, piezoelectric sensors, and gas sensors without loading them. The rail-to-rail output allows direct connection to ADCs or microcontrollers. The wide supply range supports both 3.3V and 5V systems, and the low quiescent current (2.6 mA per amp) is suitable for battery-powered sensors. The 16 MHz bandwidth enables fast response to sensor changes, making it suitable for real-time monitoring applications.
Recommended
Test and Measurement Equipment
In test and measurement equipment, the AD823ARZ provides precision signal conditioning with its low offset voltage and high bandwidth. It can be used in oscilloscope front-ends, signal generators, and spectrum analyzers. The rail-to-rail output ensures accurate representation of signals across the full supply range. The high slew rate preserves fast edges in digital signals, while the low distortion maintains signal fidelity. The dual configuration allows simultaneous processing of multiple channels, which is useful in multi-channel instruments. The wide supply range and robust output drive make it suitable for bench-top and portable test equipment.
Recommended
Recommended Products Summary
Engineering reference data for AD823ARZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD823AARZ | AD8622ARZ | AD8642ARZ | TLE2072CDR |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Number of Channels | 2 | 2 | 2 | 2 | 2 |
| Gain Bandwidth Product | 16 MHz | 16 MHz | 10 MHz | 5.5 MHz | 10 MHz |
| Slew Rate | 25 V/µs | 25 V/µs | 5 V/µs | 3 V/µs | 15 V/µs |
| Input Bias Current | 10 pA | 10 pA | 1 pA | 1 pA | 20 pA |
| Supply Voltage Range | 3 V to 36 V | 3 V to 36 V | 5 V to 30 V | 2.7 V to 12 V | 4.5 V to 38 V |
| Output Current | 15 mA | 15 mA | 30 mA | 30 mA | 30 mA |
Key Differentiators
- Higher bandwidth than AD8622ARZ (vs AD8622ARZ)
- Wider supply range than AD8642ARZ (vs AD8642ARZ)
- Lower input bias current than TLE2072CDR (vs TLE2072CDR)
Design Notes
Decouple the power supply pins with 0.1 µF ceramic capacitors placed as close to the V+ and V- pins as possible. For single-supply operation, bias the inputs to mid-supply to maximize headroom. The AD823ARZ can operate from 3 V to 36 V single supply, but ensure the input common-mode range is not exceeded.
For optimal performance, use a ground plane and keep traces short, especially for high-impedance inputs. The JFET input has very low bias current, so minimize leakage paths by cleaning the PCB and using guard rings around the input pins if necessary. Place feedback resistors close to the inverting input to reduce parasitic capacitance.
Do not exceed the absolute maximum supply voltage of 36 V or apply input voltages beyond the specified range. The input voltage range extends below ground in single-supply operation, but do not exceed the negative rail. Also, ensure the capacitive load does not exceed 500 pF at unity gain to avoid instability.
Compliance Information
RoHS compliant per distributor listings. No AEC-Q100 qualification indicated for this part.
