Overview
The AD8672ARMZ-R2 is a dual precision, very low noise operational amplifier produced by Analog Devices Inc. This amplifier is renowned for its high precision, low noise, and low input bias current, making it suitable for a wide range of high-performance applications. The AD8672 is part of the AD8671/AD8672/AD8674 family, which offers exceptional stability, speed, and low power consumption.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Input Noise Voltage Density | 2.8 nV/√Hz | f = 1 kHz |
| Peak-to-Peak Noise | 77 nV p-p | 0.1 Hz to 10 Hz |
| Input Bias Current | 12 nA max | +25°C |
| Offset Voltage | 75 μV max | –40°C < TA < +125°C |
| Offset Voltage Drift | 0.3 μV/°C to 0.5 μV/°C | –40°C < TA < +125°C |
| Bandwidth | 10 MHz | |
| Open-Loop Gain | 120 dB min | |
| Supply Current per Amplifier | 3 mA typ | VO = 0 V |
| Supply Voltage Range | ±5 V to ±15 V | |
| Slew Rate | 4 V/μs | RL = 2 kΩ |
| Settling Time (0.1%) | 1.4 μs | 4 V step, G = 1 |
| Output Current | ±10 mA | |
| Temperature Range | –40°C to +125°C |
Key Features
- Very low noise: 2.8 nV/√Hz, 77 nV p-p
- Wide bandwidth: 10 MHz
- Low input bias current: 12 nA max
- Low offset voltage: 75 μV max
- High open-loop gain: 120 dB min
- Low power consumption: 3 mA typ per amplifier
- Dual-supply operation: ±5 V to ±15 V
- Unity-gain stable
- No phase reversal
- Stable with capacitive loads of over 1000 pF
Applications
- High quality PLL filters
- Precision filters
- Medical and analytical instrumentation
- Precision power supply controls
- Automatic Test Equipment (ATE)
- Data acquisition
- Precision controls
- Professional quality audio
Q & A
- What is the input noise voltage density of the AD8672?
The input noise voltage density of the AD8672 is 2.8 nV/√Hz at 1 kHz.
- What is the maximum input bias current of the AD8672?
The maximum input bias current of the AD8672 is 12 nA at +25°C.
- What is the offset voltage of the AD8672?
The offset voltage of the AD8672 is 75 μV max over the temperature range –40°C to +125°C.
- What is the bandwidth of the AD8672?
The bandwidth of the AD8672 is 10 MHz.
- What is the open-loop gain of the AD8672?
The open-loop gain of the AD8672 is 120 dB min.
- What is the typical supply current per amplifier for the AD8672?
The typical supply current per amplifier for the AD8672 is 3 mA.
- What is the slew rate of the AD8672?
The slew rate of the AD8672 is 4 V/μs.
- What are the typical applications of the AD8672?
The AD8672 is typically used in high quality PLL filters, precision filters, medical and analytical instrumentation, precision power supply controls, ATE, data acquisition, precision controls, and professional quality audio.
- What is the temperature range for the AD8672?
The AD8672 is specified over the extended industrial temperature range of –40°C to +125°C.
- What are the available packages for the AD8672?
The AD8672 is available in 8-lead SOIC and 8-lead MSOP packages.
