Overview
The AD8609ARZ is a quad micropower rail-to-rail input and output operational amplifier produced by Analog Devices Inc. This amplifier is part of the AD8603/AD8607/AD8609 family, known for its high precision and low power consumption. It is designed to operate from a single supply of 1.8 V to 5 V or from a dual supply of ±0.9 V to ±2.5 V, making it versatile for various applications. The AD8609ARZ features a patented trimming technique that achieves superior precision without the need for laser trimming, ensuring very low offset voltage and low input voltage and current noise.
Key Specifications
| Parameter | Symbol | Typical | Maximum | Conditions |
|---|---|---|---|---|
| Input Offset Voltage | VOS | 50 µV | 100 µV | -40°C < TA < +85°C |
| Input Bias Current | IB | 0.2 pA | 1 pA | -40°C < TA < +85°C |
| Input Voltage Range | IVR | -0.3 V to +1.8 V | ||
| Common-Mode Rejection Ratio | CMRR | 80 dB | 98 dB | 0 V < VCM < 1.8 V, -40°C < TA < +85°C |
| Large Signal Voltage Gain | AVO | 100 V/mV | 2000 V/mV | RL = 10 kΩ, 0.5 V < VO < 1.3 V |
| Output Voltage High | VOH | 1.65 V | 1.72 V | IL = 1 mA, -40°C to +125°C |
| Output Voltage Low | VOL | 38 mV | 60 mV | IL = 1 mA, -40°C to +125°C |
| Supply Current per Amplifier | ISY | 40 µA | 50 µA | VO = 0 V, -40°C < TA < +85°C |
| Slew Rate | SR | 0.1 V/µs | RL = 10 kΩ | |
| Gain Bandwidth Product | GBP | 316 kHz | RL = 10 kΩ | |
| Phase Margin | ØO | 70 Degrees | RL = 10 kΩ, RL = 100 kΩ | |
| Voltage Noise Density | en | 22 nV/√Hz | f = 10 kHz |
Key Features
- Low offset voltage: 50 µV maximum
- Low input bias current: 1 pA maximum
- Single-supply operation: 1.8 V to 5 V
- Dual-supply operation: ±0.9 V to ±2.5 V
- Low noise: 22 nV/√Hz at 10 kHz
- Micropower: 50 µA maximum supply current per amplifier
- Low distortion and no phase reversal
- Unity gain stable
- Rail-to-rail input and output capability
- Patented trimming technique for superior precision without laser trimming
Applications
- Battery-powered instrumentation
- Multipole filters
- Sensors
- Low power ASIC input or output amplifiers
- Portable and loop-powered instrumentation
- Buffering CMOS ADCs, DACs, ASICs, and other wide output swing devices in low power, single-supply systems
Q & A
- What is the input offset voltage of the AD8609ARZ?
The input offset voltage of the AD8609ARZ is typically 50 µV and can be up to 100 µV maximum.
- What is the input bias current of the AD8609ARZ?
The input bias current of the AD8609ARZ is typically 0.2 pA and can be up to 1 pA maximum.
- What is the operating voltage range for the AD8609ARZ?
The AD8609ARZ can operate from a single supply of 1.8 V to 5 V or from a dual supply of ±0.9 V to ±2.5 V.
- What is the typical supply current per amplifier for the AD8609ARZ?
The typical supply current per amplifier for the AD8609ARZ is 40 µA, with a maximum of 50 µA.
- What is the slew rate of the AD8609ARZ?
The slew rate of the AD8609ARZ is 0.1 V/µs.
- What is the gain bandwidth product of the AD8609ARZ?
The gain bandwidth product of the AD8609ARZ is 316 kHz for a load resistance of 10 kΩ.
- What is the phase margin of the AD8609ARZ?
The phase margin of the AD8609ARZ is 70 degrees for load resistances of 10 kΩ and 100 kΩ.
- What is the voltage noise density of the AD8609ARZ?
The voltage noise density of the AD8609ARZ is 22 nV/√Hz at 10 kHz.
- What are some common applications of the AD8609ARZ?
The AD8609ARZ is commonly used in battery-powered instrumentation, multipole filters, sensors, and low power ASIC input or output amplifiers.
- What package options are available for the AD8609ARZ?
The AD8609ARZ is available in a 14-SOIC package.
- Is the AD8609ARZ suitable for portable electronics?
Yes, the AD8609ARZ is highly suitable for portable electronics due to its low power consumption and small package size.
