Overview
The AD8609ARUZ from Analog Devices Inc. is a quad micro-power rail-to-rail input and output operational amplifier. This device is part of the AD8603/AD8607/AD8609 family, known for their low offset voltage, low input bias current, and low noise characteristics. The AD8609 is particularly suited for applications requiring high precision and low power consumption, making it ideal for battery-powered instrumentation, multipole filters, sensors, and low power ASIC input or output amplifiers.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage | VOS | - | - | 50 µV | - |
| Input Bias Current | IB | - | - | 1 pA | - |
| Supply Voltage Range | VS | 1.8 V | - | 5 V | - |
| Common-Mode Rejection Ratio | CMRR | 70 dB | - | 98 dB | - |
| Output Voltage High | VOH | 1.65 V | - | 1.72 V | - |
| Output Voltage Low | VOL | 38 mV | - | 60 mV | - |
| Supply Current per Amplifier | ISY | 40 µA | - | 50 µA | - |
| Slew Rate | SR | - | - | 0.1 V/µs | - |
| Gain Bandwidth Product | GBP | - | - | 316 kHz | - |
| Phase Margin | ØO | - | - | 70 Degrees | - |
| Voltage Noise Density | en | - | - | 22 nV/√Hz | - |
Key Features
- Low offset voltage: 50 µV maximum
- Low input bias current: 1 pA maximum
- Single-supply operation: 1.8 V to 5 V
- Low noise: 22 nV/√Hz
- Micropower: 50 µA maximum supply current per amplifier
- No phase reversal
- Unity gain stable
- Rail-to-rail input and output capability
- High common-mode rejection ratio (CMRR): up to 98 dB
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 AD8609? The input offset voltage is up to 50 µV maximum.
- What is the input bias current of the AD8609? The input bias current is up to 1 pA maximum.
- What is the supply voltage range for the AD8609? The AD8609 operates from 1.8 V to 5 V single supply or from ±0.9 V to ±2.5 V dual supply.
- What is the common-mode rejection ratio (CMRR) of the AD8609? The CMRR is up to 98 dB.
- What is the slew rate of the AD8609? The slew rate is up to 0.1 V/µs.
- What is the gain bandwidth product (GBP) of the AD8609? The GBP is up to 316 kHz.
- What is the phase margin of the AD8609? The phase margin is up to 70 degrees.
- What is the voltage noise density of the AD8609? The voltage noise density is up to 22 nV/√Hz.
- What are some typical applications of the AD8609? Typical applications include battery-powered instrumentation, multipole filters, sensors, and low power ASIC input or output amplifiers.
- Is the AD8609 suitable for low power systems? Yes, the AD8609 is designed for low power systems with a supply current of up to 50 µA per amplifier.
