Overview
The AD8607AR, produced by Analog Devices Inc., is a dual micro-power rail-to-rail input and output operational amplifier. This component is part of the AD8603/AD8607/AD8609 family, which includes single, dual, and quad configurations. The AD8607AR is known for its very low offset voltage, low input bias current, and low noise, making it highly suitable for a variety of applications requiring precision and low power consumption.
The amplifier operates from a single supply of 1.8 V to 5 V or from a dual supply of ±0.9 V to ±2.5 V. It features a patented trimming technique that achieves superior precision without the need for laser trimming. This makes the AD8607AR particularly useful in portable and loop-powered instrumentation, as well as in battery-powered applications.
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 | 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 | 85 | 100 dB | ||
| Large Signal Voltage Gain | AVO | RL = 10 kΩ, 0.5 V < VO < 4.5 V | 250 | 450 V/mV | ||
| Output Voltage High | VOH | IL = 1 mA | 4.95 | 4.97 V | ||
| Output Voltage Low | VOL | IL = 1 mA | 16 | 30 mV | ||
| Supply Current per Amplifier | ISY | VO = 0 V | 40 | 50 μA |
Key Features
- Low Offset Voltage: Maximum of 50 μV, ensuring high precision in applications.
- Low Input Bias Current: Maximum of 1 pA, reducing the impact of input bias on signal integrity.
- Single-Supply Operation: Operates from 1.8 V to 5 V, or from ±0.9 V to ±2.5 V dual supply.
- Low Noise: 22 nV/√Hz, making it suitable for noise-sensitive applications.
- Micropower Consumption: Maximum of 50 μA per amplifier, ideal for battery-powered and low-power applications.
- Low Distortion and No Phase Reversal: Ensures high fidelity and stability in signal processing.
- Unity Gain Stable: Stable operation at unity gain, simplifying circuit design.
Applications
- Battery-Powered Instrumentation: Ideal for portable and battery-powered devices due to its low power consumption.
- Multipole Filters: Suitable for use in filter circuits requiring low noise and high precision.
- Sensors: Used in sensor applications where low offset voltage and low noise are critical.
- Low Power ASIC Input or Output Amplifiers: Suitable for integrating into ASICs where low power and high precision are required.
Q & A
- What is the maximum offset voltage of the AD8607AR?
The maximum offset voltage of the AD8607AR is 50 μV.
- What is the input bias current of the AD8607AR?
The input bias current of the AD8607AR is a maximum of 1 pA.
- What is the operating voltage range of the AD8607AR?
The AD8607AR operates 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 noise level of the AD8607AR?
The noise level of the AD8607AR is 22 nV/√Hz.
- Is the AD8607AR suitable for battery-powered applications?
Yes, the AD8607AR is highly suitable for battery-powered applications due to its low power consumption of 50 μA maximum per amplifier.
- What is the common-mode rejection ratio (CMRR) of the AD8607AR?
The CMRR of the AD8607AR is 85 dB to 100 dB.
- What is the large signal voltage gain of the AD8607AR?
The large signal voltage gain of the AD8607AR is 250 V/mV to 450 V/mV.
- Is the AD8607AR unity gain stable?
Yes, the AD8607AR is unity gain stable.
- What are some typical applications of the AD8607AR?
The AD8607AR is typically used in battery-powered instrumentation, multipole filters, sensors, and low power ASIC input or output amplifiers.
- What is the output voltage range of the AD8607AR?
The output voltage range of the AD8607AR is from 4.95 V to 4.97 V for high output and from 16 mV to 30 mV for low output at 1 mA load current.
