Overview
The AD8618ARU-REEL, produced by Analog Devices Inc., is a quad, rail-to-rail, input and output, single-supply operational amplifier. This component is part of the AD8615/AD8616/AD8618 family, known for its very low offset voltage, wide signal bandwidth, and low input voltage and current noise. The AD8618 is fully specified to operate from 2.7 V to 5 V single supplies, making it versatile for various applications. It features a patented trimming technique that achieves superior precision without the need for laser trimming.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | VS = 3.5 V @ VCM = 0.5 V and 3.0 V | 23 | 65 | 800 | µV |
| Input Bias Current | IB | 0.2 | 1 | 500 | pA | |
| Input Offset Current | IOS | 0.1 | 0.5 | 250 | pA | |
| Input Voltage Range | VCM = 0 V to 5 V | 0 | 5 | V | ||
| Common-Mode Rejection Ratio | CMRR | VCM = 0 V to 4.5 V | 80 | 100 | dB | |
| Large Signal Voltage Gain | AVO | RL = 2 kΩ, VO = 0.5 V to 5 V | 55 | 150 | V/mV | |
| Output Voltage High | VOH | IL = 1 mA | 2.65 | 2.68 | 2.6 | V |
| Output Voltage Low | VOL | IL = 1 mA | 11 | 25 | 30 | mV |
| Output Current | IOUT | ±50 | mA | |||
| Slew Rate | SR | RL = 2 kΩ | 12 | V/µs | ||
| Supply Current per Amplifier | ISY | VO = 0 V | 1.7 | 2 | 2.5 | mA |
| Power Supply Rejection Ratio | PSRR | VS = 2.7 V to 5.5 V | 70 | 90 | dB |
Key Features
- Low Offset Voltage: Maximum of 65 µV, ensuring high precision in applications.
- Single-Supply Operation: Operates from 2.7 V to 5 V, making it suitable for battery-powered devices and low-voltage systems.
- Low Noise: Noise voltage density of 8 nV/√Hz, ideal for low noise applications.
- Wide Bandwidth: Greater than 20 MHz bandwidth, suitable for high-speed applications.
- High Slew Rate: 12 V/µs slew rate, enabling fast response times.
- High Output Current: Capable of delivering up to ±50 mA, suitable for driving heavy loads).
- Low Input Bias Current: As low as 1 pA, minimizing the impact on input signals).
- Low Supply Current: Only 2 mA per amplifier, making it power-efficient).
- No Phase Reversal: Ensures stable output without phase reversal, even with input voltage swings).
Applications
- Barcode Scanners: High precision and low noise make it ideal for barcode scanning applications).
- Battery-Powered Instrumentation: Single-supply operation and low power consumption are beneficial for battery-powered devices).
- Multipole Filters: Wide bandwidth and low distortion make it suitable for filter applications).
- Sensors and High Impedance Sensors: Low input bias current and high precision are advantageous for sensor applications).
- ASIC Input or Output Amplifiers: High performance and stability make it a good choice for ASIC applications).
- Audio and Photodiode Amplification: Low noise and high bandwidth are beneficial for audio and photodiode amplification).
- Active Filters and D/A Conversion: Suitable for active filter designs and D/A conversion due to its high performance characteristics).
Q & A
- What is the typical offset voltage of the AD8618?
The typical offset voltage of the AD8618 is 65 µV).
- What is the operating voltage range of the AD8618?
The AD8618 operates from 2.7 V to 5 V single supplies).
- What is the slew rate of the AD8618?
The slew rate of the AD8618 is 12 V/µs).
- What is the maximum output current of the AD8618?
The AD8618 can deliver up to ±50 mA of output current).
- What are some common applications of the AD8618?
Common applications include barcode scanners, battery-powered instrumentation, multipole filters, sensors, ASIC input or output amplifiers, audio, and photodiode amplification).
- What is the typical supply current per amplifier for the AD8618?
The typical supply current per amplifier is 2 mA).
- Does the AD8618 have phase reversal issues?
No, the AD8618 does not have phase reversal issues, even with input voltage swings).
- What is the common-mode rejection ratio (CMRR) of the AD8618?
The CMRR of the AD8618 is typically 80 dB to 100 dB).
- What is the power supply rejection ratio (PSRR) of the AD8618?
The PSRR of the AD8618 is typically 70 dB to 90 dB).
- In what package is the AD8618 available?
The AD8618 is available in a 14-lead SOIC and TSSOP package).
