Overview
The AD8672ARZ-REEL is a dual, very high precision operational amplifier produced by Analog Devices Inc. This amplifier is renowned for its ultra-low noise, very low offset voltage and drift, low input bias current, and a bandwidth of 10 MHz. It is designed for low power consumption and offers high precision, speed, and stability, making it ideal for a variety of applications. The device is unity-gain stable and can handle capacitive loads of over 1000 pF. It operates on dual supplies ranging from ±5 V to ±15 V and is specified over the extended industrial temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Offset Voltage (VOS) | 20 µV to 75 µV | −40°C < TA < +125°C |
| Offset Voltage Drift (∆VOS/∆T) | 0.3 µV/°C to 0.5 µV/°C | −40°C < TA < +125°C |
| Input Bias Current (IB) | −12 nA to +12 nA | +25°C < TA < +125°C |
| Input Offset Current (IOS) | −12 nA to +12 nA | +25°C < TA < +125°C |
| Input Voltage Range | −2.5 V to +2.5 V | |
| Common-Mode Rejection Ratio (CMRR) | 100 dB to 120 dB | VCM = −2.5 V to +2.5 V |
| Large Signal Voltage Gain (AVO) | 1000 V/mV to 6000 V/mV | RL = 2 kΩ, VO = −3 V to +3 V |
| Output Voltage High (VOH) | +3.8 V to +4.0 V | RL = 2 kΩ, −40°C to +125°C |
| Output Voltage Low (VOL) | −3.9 V to −3.8 V | RL = 2 kΩ, −40°C to +125°C |
| Output Current (IOUT) | ±10 mA | |
| Supply Current/Amplifier (ISY) | 3 mA to 3.5 mA | VO = 0 V, −40°C < TA < +125°C |
| Slew Rate (SR) | 4 V/µs | RL = 2 kΩ |
| Settling Time (tS) | 1.4 µs to 5.1 µs | To 0.1% and 0.01% (4 V step, G = 1) |
| Gain Bandwidth Product (GBP) | 10 MHz | |
| Voltage Noise Density (en) | 2.8 nV/√Hz to 3.8 nV/√Hz | f = 1 kHz |
| Current Noise Density (in) | 0.3 pA/√Hz | f = 1 kHz |
| Package Type | 8-lead SOIC | |
| Operating Temperature Range | −40°C to +125°C |
Key Features
- Ultra-low noise: 2.8 nV/√Hz voltage noise density and 77 nV p-p peak-to-peak noise.
- Very low offset voltage: 20 µV to 75 µV and low offset voltage drift: 0.3 µV/°C to 0.5 µV/°C.
- Low input bias current: −12 nA to +12 nA and low input offset current: −12 nA to +12 nA.
- High bandwidth: 10 MHz and high gain bandwidth product: 10 MHz.
- Low power consumption: Supply current less than 3 mA per amplifier at 30 V.
- Dual-supply operation: ±5 V to ±15 V and high supply current rejection ratio: 110 dB to 130 dB.
- Unity-gain stable and no phase reversal.
- Stable with capacitive loads of over 1000 pF.
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.
Q & A
- What is the typical voltage noise density of the AD8672ARZ?
The typical voltage noise density is 2.8 nV/√Hz at 1 kHz.
- What is the maximum offset voltage of the AD8672ARZ?
The maximum offset voltage is 75 µV over the temperature range −40°C to +125°C.
- What is the input bias current range of the AD8672ARZ?
The input bias current ranges from −12 nA to +12 nA at +25°C to +125°C.
- What is the bandwidth of the AD8672ARZ?
The bandwidth is 10 MHz.
- What is the supply current per amplifier for the AD8672ARZ?
The supply current per amplifier is less than 3 mA at 30 V.
- What are the operating temperature ranges for the AD8672ARZ?
The operating temperature range is −40°C to +125°C.
- What types of packages are available for the AD8672ARZ?
The AD8672ARZ is available in 8-lead SOIC and 8-lead MSOP packages.
- What are some common applications for the AD8672ARZ?
Common applications include high-quality PLL filters, precision filters, medical and analytical instrumentation, precision power supply controls, ATE, data acquisition, and professional quality audio.
- Is the AD8672ARZ unity-gain stable?
Yes, the AD8672ARZ is unity-gain stable and does not exhibit phase reversal.
- What is the maximum output current of the AD8672ARZ?
The maximum output current is ±10 mA.
