Overview
The AD648JR is a dual precision, low power BiFET operational amplifier produced by Analog Devices Inc. This device is part of the AD648 series, known for its excellent DC and AC performance, making it ideal for high-performance, low-power applications. The AD648JR is pin compatible with industry-standard dual op amps such as the LF442, TL062, and AD642, allowing designers to enhance performance while reducing power dissipation.
The AD648JR features low quiescent current and low input bias current, which are critical for applications requiring minimal power consumption and high precision. It is fabricated using ion-implanted FET and laser wafer trimming technologies, ensuring high accuracy and stability.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Quiescent Current (Both Amplifiers) | 340 | 400 | 400 | µA |
| Input Bias Current (Warmed Up) | 10 | pA | ||
| Input Offset Voltage (AD648J) | 2 | mV | ||
| Offset Voltage Drift (AD648J) | 20 | µV/°C | ||
| Slew Rate | 1.8 | V/µs | ||
| Unity Gain Bandwidth | 1 | MHz | ||
| Operating Temperature Range (Commercial) | 0 | 70 | °C | |
| Supply Voltage Range | ±4.5 | ±18 | V | |
| Output Short Circuit Current | 15 | mA |
Key Features
- Low Power Consumption: The AD648JR has a low quiescent current of 400 µA max, making it suitable for battery-powered applications.
- High Precision: It features low input bias current (10 pA max, warmed up) and low input offset voltage (2 mV max) with a drift of 20 µV/°C, achieved through Analog Devices’ laser wafer drift trimming process.
- High Performance: The device offers a slew rate of 1.8 V/µs and a unity gain bandwidth of 1 MHz, ensuring excellent AC performance.
- Temperature Stability: Available in various temperature ranges including commercial (0°C to 70°C), industrial (–40°C to +85°C), and military (–55°C to +125°C) grades.
- Package Options: Available in 8-lead plastic mini-DIP, CERDIP, and SOIC packages, with options for tape and reel packaging.
- Low Noise and High Linearity: The AD648JR exhibits low 1/f noise and high common-mode rejection (82 dB min), ensuring better than 12-bit linearity in high impedance buffer applications.
Applications
- Battery-Powered Devices: Ideal for applications requiring low power consumption, such as battery-powered precision instruments and portable equipment.
- Precision Instrument Front Ends: The low input offset voltage and drift make it suitable for precision instrument front ends.
- CMOS DAC Buffers: The AD648JR’s low bias current and low noise characteristics are beneficial for CMOS DAC buffer applications.
- High Impedance Buffer Applications: Ensures high linearity and low noise in high impedance buffer applications.
Q & A
- What is the maximum quiescent current of the AD648JR?
The maximum quiescent current of the AD648JR is 400 µA.
- What is the typical slew rate of the AD648JR?
The typical slew rate of the AD648JR is 1.8 V/µs.
- What is the unity gain bandwidth of the AD648JR?
The unity gain bandwidth of the AD648JR is 1 MHz.
- What are the temperature ranges available for the AD648JR?
The AD648JR is available in commercial (0°C to 70°C), industrial (–40°C to +85°C), and military (–55°C to +125°C) temperature ranges.
- What are the package options for the AD648JR?
The AD648JR is available in 8-lead plastic mini-DIP, CERDIP, and SOIC packages, with options for tape and reel packaging.
- What is the maximum input bias current of the AD648JR?
The maximum input bias current of the AD648JR is 10 pA (warmed up).
- What is the maximum input offset voltage of the AD648JR?
The maximum input offset voltage of the AD648JR is 2 mV.
- What is the offset voltage drift of the AD648JR?
The offset voltage drift of the AD648JR is 20 µV/°C.
- Is the AD648JR suitable for high impedance buffer applications?
Yes, the AD648JR is suitable for high impedance buffer applications due to its high common-mode rejection and low noise characteristics.
- Is the AD648JR RoHS compliant?
Yes, the AD648JR is lead-free and RoHS compliant.
