Overview
The AD706JN, produced by Analog Devices Inc., is a dual, low power, bipolar operational amplifier (op amp) that combines the low input bias current of a JFET amplifier with the low drift characteristics of a bipolar amplifier. This device is particularly suited for applications requiring high DC precision, low noise, and low power consumption. The AD706JN is available in an 8-lead plastic mini-DIP (N) package and is rated over the commercial temperature range of 0°C to +70°C.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage | Initial Offset | 30 | 100 | 150 | µV |
| Input Bias Current | VCM = 0 V | 50 | 200 | 400 | pA |
| Common-Mode Rejection Ratio | VCM = ±13.5 V | 110 | 132 | dB | |
| Power Supply | Rated Performance | ±2.0 | ±15 | ±18 | V |
| Quiescent Current, Total | 0.75 | 1.2 | 1.4 | mA | |
| Gain Bandwidth Product | 800 | kHz | |||
| Voltage Noise | 0.1 Hz to 10 Hz | 0.5 | µV p-p | ||
| Current Noise | 0.1 Hz to 10 Hz | 3 | pA p-p | ||
| Output Voltage Swing | RLOAD = 10 kΩ | ±13 | ±14 | V |
Key Features
- High DC Precision: The AD706JN offers microvolt offset voltage and low drift characteristics, making it suitable for precision applications.
- Low Input Bias Current: With input bias currents as low as 200 pA, this op amp does not require the commonly used “balancing” resistor and is suitable for high source impedances.
- Low Noise: The device features low voltage noise (0.5 µV p-p from 0.1 Hz to 10 Hz) and low current noise (50 fA/√Hz), making it ideal for low noise applications.
- Low Power Consumption: The AD706JN has a quiescent current of 0.75 mA to 1.2 mA per amplifier, making it suitable for high density boards.
- Temperature Stability: The input bias current drift is significantly lower than that of JFET amplifiers, with only a 5% increase at 125°C.
- Package Options: Available in 8-lead plastic mini-DIP (N) and surface-mount (SOIC) packages.
Applications
- Low Frequency Active Filters: Suitable for use in 12-bit and 14-bit data acquisition systems.
- Precision Instrumentation: Ideal for applications requiring high precision and low noise.
- Precision Integrators: The AD706JN is an excellent choice as a high-quality integrator.
Q & A
- What is the input offset voltage of the AD706JN?
The initial input offset voltage is 30 µV to 100 µV, and the offset voltage over temperature range is 40 µV to 150 µV.
- What is the input bias current of the AD706JN?
The input bias current is 50 pA to 200 pA at VCM = 0 V, and up to 400 pA over the temperature range.
- What is the common-mode rejection ratio (CMRR) of the AD706JN?
The CMRR is 110 dB to 132 dB.
- What is the power supply range for the AD706JN?
The rated performance is ±15 V, with an operating range of ±2.0 V to ±18 V.
- What is the quiescent current of the AD706JN?
The quiescent current is 0.75 mA to 1.2 mA per amplifier, and up to 1.4 mA over the temperature range.
- What is the gain bandwidth product of the AD706JN?
The gain bandwidth product is 800 kHz.
- What are the noise characteristics of the AD706JN?
The voltage noise is 0.5 µV p-p from 0.1 Hz to 10 Hz, and the current noise is 50 fA/√Hz.
- What are the output voltage swing and short circuit current of the AD706JN?
The output voltage swing is ±13 V to ±14 V with a 10 kΩ load, and the short circuit current is ±15 mA.
- In what packages is the AD706JN available?
The AD706JN is available in 8-lead plastic mini-DIP (N) and surface-mount (SOIC) packages.
- What are the typical applications of the AD706JN?
The AD706JN is typically used in low frequency active filters, precision instrumentation, and as a high-quality integrator.
