Overview
The AD8619ARZ-REEL is a quad, micropower, rail-to-rail input and output operational amplifier produced by Analog Devices Inc. This amplifier is part of the AD8613/AD8617/AD8619 family and is known for its low supply current, low input voltage and current noise, and high performance in single-supply and dual-supply configurations.
Designed for low power consumption, the AD8619 is suitable for a wide range of applications, including battery-powered instrumentation, multipole filters, current shunt sensing, and as predrivers for ADCs and DACs. Its rail-to-rail input and output capability makes it ideal for buffering CMOS ADCs, DACs, ASICs, and other wide output swing devices in low power systems.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | −0.3 V < VCM < +5.3 V | 0.4 | 2.2 | mV | |
| Offset Voltage Drift | ∆VOS/∆T | −40°C < TA < +125°C | 1 | 4.5 | μV/°C | |
| Input Bias Current | IB | −40°C < TA < +85°C | 0.2 | 1 | pA | |
| Input Offset Current | IOS | −40°C < TA < +85°C | 0.1 | 0.5 | pA | |
| Input Voltage Range | IVR | 0 | 5 V | |||
| Common-Mode Rejection Ratio | CMRR | 0 V < VCM < 5 V | 95 | dB | ||
| Large Signal Voltage Gain | AVO | RL = 10 kΩ, 0.5 V < VO < 4.5 V | 235 | V/mV | ||
| Output Voltage High | VOH | IL = 1 mA | 1.65 | 1.73 | V | |
| Output Voltage Low | VOL | IL = 1 mA | 44 | 60 | mV |
Key Features
- Rail-to-Rail Input and Output: Enables the amplifier to swing rail-to-rail at both the input and output, making it suitable for buffering CMOS ADCs, DACs, ASICs, and other wide output swing devices in low power systems.
- Low Input Bias Current: Maximum of 1 pA, which is beneficial for high impedance sources.
- Low Noise: 22 nV/√Hz, making it suitable for noise-sensitive applications.
- Micropower Operation: Maximum supply current of 50 μA per amplifier over temperature, ideal for battery-powered and low power applications.
- Single-Supply Operation: Fully specified to operate from 1.8 V to 5.5 V single supply or ±0.9 V and ±2.5 V dual supply.
- Unity Gain Stable: Ensures stability in unity gain configurations.
- Qualified for Automotive Applications: Suitable for use in automotive environments.
Applications
- Battery-Powered Instrumentation: Ideal for portable and loop-powered instrumentation due to its low power consumption.
- Multipole Filters: Can be used in various filter configurations.
- Current Shunt Sensing: Suitable for current sensing applications.
- Sensors: Can be used as amplifiers in sensor circuits.
- ADC and DAC Drivers/Level Shifters: Acts as predrivers for analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
- Low Power ASIC Input or Output Amplifiers: Suitable for use in low power ASIC applications.
Q & A
- What is the maximum offset voltage of the AD8619?
The maximum offset voltage of the AD8619 is 2.2 mV.
- What is the input bias current of the AD8619?
The input bias current of the AD8619 is a maximum of 1 pA.
- What is the noise level of the AD8619?
The noise level of the AD8619 is 22 nV/√Hz.
- What are the supply voltage ranges for the AD8619?
The AD8619 can operate from 1.8 V to 5.5 V single supply or ±0.9 V and ±2.5 V dual supply.
- Is the AD8619 qualified for automotive applications?
Yes, the AD8619 is qualified for automotive applications.
- What is the typical supply current per amplifier for the AD8619?
The typical supply current per amplifier for the AD8619 is 50 μA.
- Can the AD8619 be used in unity gain configurations?
Yes, the AD8619 is unity gain stable.
- What are some common applications of the AD8619?
Common applications include battery-powered instrumentation, multipole filters, current shunt sensing, sensors, and as predrivers for ADCs and DACs.
- What is the common-mode rejection ratio (CMRR) of the AD8619?
The CMRR of the AD8619 is 95 dB for 0 V < VCM < 5 V.
- What is the large signal voltage gain of the AD8619?
The large signal voltage gain of the AD8619 is 235 V/mV for RL = 10 kΩ and 0.5 V < VO < 4.5 V.
