Overview
The AD746JN, produced by Analog Devices Inc., is a dual operational amplifier consisting of two AD744 BiFET op amps integrated on a single chip. This precision monolithic op amp is renowned for its excellent DC characteristics, rapid settling times, high slew rates, and ample bandwidths. The AD746 is particularly suited for applications requiring high precision and fast response times, such as in high-speed data acquisition systems, precision ADC and DAC buffers, and low distortion audio circuitry.
Key Specifications
| Parameter | AD746J | AD746A/B | AD746S |
|---|---|---|---|
| Operating Temperature Range | 0°C to +70°C | –40°C to +85°C | –55°C to +125°C |
| Input Offset Voltage | 0.5 mV max | 0.5 mV max | 0.5 mV max |
| Input Offset Voltage Drift | 10 µV/°C max | 10 µV/°C max | 10 µV/°C max |
| Open-Loop Gain | 175 V/mV min | 175 V/mV min | 175 V/mV min |
| Slew Rate | 50 V/µs min | 50 V/µs min | 50 V/µs min |
| Settling Time (0.01% for 10 V Step) | 500 ns | 500 ns | 500 ns |
| Total Harmonic Distortion (THD) | 0.0003% | 0.0003% | 0.0003% |
| Gain Bandwidth Product | 13 MHz | 13 MHz | 13 MHz |
| Package Types | Plastic Mini-DIP, Hermetic Cerdip, Surface Mount (SOIC) | Plastic Mini-DIP, Hermetic Cerdip, Surface Mount (SOIC) | Plastic Mini-DIP, Hermetic Cerdip, Surface Mount (SOIC) |
Key Features
- Fast Settling Time: Settles to 0.01% in 500 ns, making it ideal for high-speed data acquisition systems.
- High Slew Rate: Minimum slew rate of 50 V/µs.
- Excellent DC Precision: Low input offset voltage (0.5 mV max), low input offset voltage drift (10 µV/°C max), and high open-loop gain (175 V/mV min).
- Low Total Harmonic Distortion (THD): 0.0003%, suitable for low distortion audio applications.
- Close Matching AC Characteristics: Ideal for differential and multichannel systems.
- Internal Compensation: Stable operation as a unity gain inverter or as a noninverting amplifier with a gain of 2 or greater.
Applications
- Output Buffers for DACs and ADCs: Suitable for 12-bit, 14-bit, and 16-bit DACs and ADCs.
- Wideband Preamplifiers: High bandwidth and fast settling times make it suitable for wideband applications.
- Low Distortion Audio Circuitry: Low THD and high slew rate make it ideal for audio applications.
- Cable Drivers: Capable of driving capacitive loads with high slew rates.
Q & A
- What is the AD746JN operational amplifier?
The AD746JN is a dual operational amplifier consisting of two AD744 BiFET op amps on a single chip, produced by Analog Devices Inc.
- What are the key specifications of the AD746JN?
Key specifications include a settling time of 500 ns to 0.01%, a minimum slew rate of 50 V/µs, and an open-loop gain of 175 V/mV min.
- What are the typical applications of the AD746JN?
Typical applications include output buffers for DACs and ADCs, wideband preamplifiers, low distortion audio circuitry, and cable drivers.
- What is the operating temperature range of the AD746JN?
The operating temperature range for the AD746JN is 0°C to +70°C.
- What is the total harmonic distortion (THD) of the AD746JN?
The total harmonic distortion (THD) of the AD746JN is 0.0003%.
- What are the package types available for the AD746JN?
The AD746JN is available in plastic mini-DIP, hermetic cerdip, and surface mount (SOIC) packages.
- Is the AD746JN internally compensated?
Yes, the AD746JN is internally compensated for stable operation as a unity gain inverter or as a noninverting amplifier with a gain of 2 or greater.
- What is the input offset voltage of the AD746JN?
The input offset voltage of the AD746JN is 0.5 mV max.
- How does the AD746JN perform in terms of settling time?
The AD746JN settles to 0.01% in 500 ns for a 10 V step.
- What is the gain bandwidth product of the AD746JN?
The gain bandwidth product of the AD746JN is 13 MHz.
