Overview
The AD8609ARZ-REEL, produced by Analog Devices Inc., is a quad precision rail-to-rail input and output operational amplifier. This component is part of the AD8603/AD8607/AD8609 family, which features single, dual, and quad configurations, respectively. The AD8609 is known for its low offset voltage, low input bias current, and low noise characteristics, making it suitable for a wide range of applications, particularly in low-power, single-supply systems.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | VS = 3.3 V @ VCM = 0.5 V and 2.8 V | 12 | 50 | 700 | μV |
| Input Bias Current | IB | −40°C < TA < +85°C | 0.2 | 1 | 50 | pA |
| Input Offset Current | IOS | −40°C < TA < +85°C | 0.1 | 0.5 | 50 | pA |
| Input Voltage Range | IVR | −0.3 | +5.2 | V | ||
| Common-Mode Rejection Ratio | CMRR | 0 V < VCM < 5 V | 80 | 98 | 100 | dB |
| Large Signal Voltage Gain | AVO | RL = 10 kΩ, 0.5 V < VO < 4.5 V | 100 | 2000 | V/mV | |
| Output Voltage High | VOH | IL = 1 mA | 4.95 | 4.97 | V | |
| Output Voltage Low | VOL | IL = 1 mA | 16 | 30 | mV | |
| Short-Circuit Current | ISC | ±70 | mA | |||
| Supply Current per Amplifier | ISY | VO = 0 V | 40 | 60 | μA | |
| Slew Rate | SR | RL = 10 kΩ | 0.1 | V/μs | ||
| Gain Bandwidth Product | GBP | RL = 100 kΩ | 385 | kHz | ||
| Phase Margin | ØO | RL = 10 kΩ, RL = 100 kΩ | 70 | Degrees | ||
| Voltage Noise Density | en | f = 1 kHz | 25 | nV/√Hz |
Key Features
- Low Offset Voltage: Maximum of 50 μV, ensuring high precision in applications.
- Low Input Bias Current: Maximum of 1 pA, which is beneficial for high impedance sources.
- Single-Supply Operation: Operates from 1.8 V to 5 V, making it suitable for battery-powered and low-power systems.
- Low Noise: Voltage noise density of 22 nV/√Hz at 10 kHz, contributing to overall system accuracy.
- Micropower Consumption: Supply current per amplifier is typically 50 μA, ideal for power-sensitive applications.
- Rail-to-Rail Input and Output: Allows for full swing at both input and output, enabling the buffering of CMOS ADCs, DACs, and other wide output swing devices.
- No Phase Reversal: Ensures stable operation without phase reversal, even when the input voltage exceeds the supply rails.
- Unity Gain Stable: Stable operation at unity gain, which is crucial for many feedback configurations.
Applications
- Battery-Powered Instrumentation: Ideal for portable and battery-powered devices due to its low power consumption and single-supply operation.
- Multipole Filters: Suitable for use in filter circuits due to its low noise and high precision characteristics.
- Sensors: Used in sensor applications where low offset voltage and low noise are critical.
- Low Power ASIC Input or Output Amplifiers: Useful in low-power ASIC applications requiring precision and low noise amplification.
Q & A
- What is the typical supply current per amplifier for the AD8609?
The typical supply current per amplifier is 50 μA.
- What is the maximum offset voltage for the AD8609?
The maximum offset voltage is 50 μV.
- What is the input bias current range for the AD8609?
The input bias current ranges from 0.2 pA to 50 pA over the temperature range of −40°C to +85°C.
- What is the common-mode rejection ratio (CMRR) of the AD8609?
The CMRR is typically 98 dB for 0 V < VCM < 1.8 V.
- What is the slew rate of the AD8609?
The slew rate is 0.1 V/μs.
- What is the gain bandwidth product (GBP) of the AD8609?
The GBP is 385 kHz for RL = 100 kΩ.
- Is the AD8609 unity gain stable?
Yes, the AD8609 is unity gain stable.
- What is the output voltage range for the AD8609?
The output voltage high is typically 4.95 V and the output voltage low is typically 16 mV at IL = 1 mA.
- What is the short-circuit current of the AD8609?
The short-circuit current is ±70 mA.
- What are the typical applications of the AD8609?
The AD8609 is typically used in battery-powered instrumentation, multipole filters, sensors, and low-power ASIC input or output amplifiers.
