Overview
The AD8672AR-REEL7, produced by Analog Devices Inc., is a high-precision operational amplifier known for its exceptional performance in low noise, low offset voltage, and high stability. This amplifier is part of the AD8671/AD8672/AD8674 series, which are designed to offer ultralow noise, high precision, and low power consumption. The AD8672 is particularly suited for applications requiring high accuracy and stability over a wide range of temperatures.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Voltage Noise Density | 2.8 nV/√Hz to 3.8 nV/√Hz | f = 1 kHz |
| Peak-to-Peak Noise | 77 nV to 100 nV | 0.1 Hz to 10 Hz |
| Offset Voltage (VOS) | 20 μV to 75 μV | –40°C to +125°C |
| Offset Voltage Drift (∆VOS/∆T) | 0.3 μV/°C to 0.5 μV/°C | –40°C to +125°C |
| Input Bias Current (IB) | –12 nA to +12 nA | +25°C to +125°C |
| Input Offset Current (IOS) | –12 nA to +12 nA | +25°C to +125°C |
| Bandwidth | 10 MHz | |
| Slew Rate (SR) | 4 V/μs | RL = 2 kΩ |
| Settling Time (tS) to 0.1% | 1.4 μs | 4 V step, G = 1 |
| Supply Current per Amplifier (ISY) | 3 mA to 3.5 mA | VO = 0 V, –40°C to +125°C |
| Power Supply Rejection Ratio (PSRR) | 110 dB to 130 dB | VS = ±4 V to ±18 V |
| Output Voltage High (VOH) | +13.2 V to +13.8 V | RL = 2 kΩ, –40°C to +125°C |
| Output Voltage Low (VOL) | –13.8 V to –13.2 V | RL = 2 kΩ, –40°C to +125°C |
| Output Current (IOUT) | ±20 mA | |
| Short Circuit Current (ISC) | ±30 mA |
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
- Compact packaging: MSOP version requires half the board space of comparable amplifiers
Applications
- High quality PLL filters
- Precision filters
- Medical and analytical instrumentation
- Precision power supply controls
- Automated Test Equipment (ATE)
- Data acquisition
- Precision controls
- Professional quality audio
Q & A
- What is the voltage noise density of the AD8672?
The voltage noise density of the AD8672 is 2.8 nV/√Hz to 3.8 nV/√Hz at 1 kHz.
- What is the peak-to-peak noise of the AD8672?
The peak-to-peak noise of the AD8672 is 77 nV to 100 nV over the 0.1 Hz to 10 Hz frequency range.
- What is the maximum offset voltage of the AD8672?
The maximum offset voltage of the AD8672 is 75 μV.
- What is the input bias current of the AD8672?
The input bias current of the AD8672 is –12 nA to +12 nA at +25°C to +125°C.
- What is the bandwidth of the AD8672?
The bandwidth of the AD8672 is 10 MHz.
- What is the slew rate of the AD8672?
The slew rate of the AD8672 is 4 V/μs with a load resistance of 2 kΩ.
- What is the settling time of the AD8672 to 0.1%?
The settling time of the AD8672 to 0.1% is 1.4 μs for a 4 V step with a gain of 1.
- What is the supply current per amplifier for the AD8672?
The supply current per amplifier for the AD8672 is 3 mA to 3.5 mA at VO = 0 V and –40°C to +125°C.
- 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 are the available packages for the AD8672?
The AD8672 is available in 8-lead SOIC and 8-lead MSOP packages.
- Is the AD8672AR-REEL7 still in production?
No, the AD8672AR-REEL7 is obsolete and no longer manufactured.
