Overview
The AD8672ARM-REEL, produced by Analog Devices Inc., is a high-precision operational amplifier known for its exceptional performance characteristics. This amplifier is part of the AD8671/AD8672/AD8674 family, which features very low noise, low offset voltage and drift, low input bias current, and a wide bandwidth of 10 MHz. These amplifiers are designed to provide high precision, speed, and stability, making them ideal for a variety of demanding applications.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Input Offset Voltage (VOS) | 75 µV max | −40°C to +125°C |
| Input Offset Voltage Drift (∆VOS/∆T) | 0.3 to 0.5 µV/°C | −40°C to +125°C |
| Input Bias Current (IB) | −12 to +12 nA | +25°C to +125°C |
| Common Mode Rejection Ratio (CMRR) | 100 dB | |
| Gain Bandwidth Product (GBP) | 10 MHz | |
| Slew Rate (SR) | 4 V/µs | RL = 2 kΩ |
| Supply Current per Amplifier (ISY) | 3 to 3.5 mA | VO = 0 V, −40°C to +125°C |
| Operating Temperature Range | −40°C to +125°C | |
| Supply Voltage Range | ±5 V to ±15 V | |
| Output Voltage High (VOH) | +13.2 to +13.8 V | RL = 2 kΩ |
| Output Voltage Low (VOL) | −13.8 to −13.2 V | RL = 2 kΩ |
| Output Current (IOUT) | ±20 mA | |
| Short Circuit Current (ISC) | ±30 mA |
Key Features
- Very low noise: 2.8 nV/√Hz at 1 kHz and 77 nV p-p from 0.1 Hz to 10 Hz.
- Low offset voltage and drift: 75 µV max and 0.3 to 0.5 µV/°C.
- Low input bias current: −12 to +12 nA.
- High gain bandwidth product: 10 MHz.
- Low power consumption: 3 to 3.5 mA per amplifier.
- Dual-supply operation: ±5 V to ±15 V.
- Unity-gain stable and no phase reversal.
- Stable with capacitive loads of over 1000 pF.
- Available in 8-lead SOIC and 8-lead MSOP packages.
Applications
- High-quality PLL filters and precision filters.
- Medical and analytical instrumentation.
- Precision power supply controls and ATE (Automated Test Equipment).
- Data acquisition and precision controls.
- Professional quality audio.
- Sensors and controls.
- GPS instrumentation.
Q & A
- What is the input offset voltage of the AD8672?
The input offset voltage (VOS) of the AD8672 is 75 µV max over the temperature range of −40°C to +125°C.
- What is the gain bandwidth product of the AD8672?
The gain bandwidth product (GBP) of the AD8672 is 10 MHz.
- What is the slew rate of the AD8672?
The slew rate (SR) of the AD8672 is 4 V/µs with a load resistance of 2 kΩ.
- What is the operating temperature range of the AD8672?
The AD8672 operates over a temperature range of −40°C to +125°C.
- What are the typical supply currents for the AD8672?
The typical supply current per amplifier for the AD8672 is 3 to 3.5 mA.
- What are the common package types for the AD8672?
The AD8672 is available in 8-lead SOIC and 8-lead MSOP packages.
- What are some of the key applications for the AD8672?
The AD8672 is used in high-quality PLL filters, precision filters, medical and analytical instrumentation, precision power supply controls, ATE, data acquisition, and professional quality audio.
- What is the noise performance of the AD8672?
The AD8672 has a voltage noise density of 2.8 nV/√Hz at 1 kHz and a peak-to-peak noise of 77 nV from 0.1 Hz to 10 Hz.
- Is the AD8672 unity-gain stable?
Yes, the AD8672 is unity-gain stable and does not exhibit phase reversal.
- What is the output current capability of the AD8672?
The AD8672 can deliver an output current of ±20 mA and has a short circuit current of ±30 mA.
