Overview
The AD8630ARZ-REEL, produced by Analog Devices Inc., is a zero-drift, single-supply, rail-to-rail input/output operational amplifier. This amplifier is part of the AD8628/AD8629/AD8630 family, known for its high precision, low noise, and low offset voltage. It combines the benefits of auto-zeroing and chopping technologies to provide high accuracy and low drift over a wide temperature range, making it suitable for sensitive measurement applications in various industries.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | −40°C ≤ TA ≤ +125°C | 1 | 5 | 10 | µV |
| Input Bias Current | IB | −40°C ≤ TA ≤ +125°C | 100 | 300 | 1.5 nA | pA |
| Input Offset Current | IOS | −40°C ≤ TA ≤ +125°C | 50 | 200 | 250 | pA |
| Input Voltage Range | 0 to 5 V | V | ||||
| Common-Mode Rejection Ratio | CMRR | VCM = 0 V to 5 V | 115 | 130 | dB | |
| Large Signal Voltage Gain | AVO | RL = 10 kΩ, VO = 0.3 V to 4.7 V | 120 | 135 | dB | |
| Offset Voltage Drift | ∆VOS/∆T | −40°C ≤ TA ≤ +125°C | 0.002 | 0.02 | µV/°C | |
| Output Voltage High | VOH | RL = 10 kΩ to ground | 4.95 | 4.98 | V | |
| Output Voltage Low | VOL | RL = 10 kΩ to V+ | 10 | 20 | mV | |
| Short-Circuit Limit | ISC | −40°C ≤ TA ≤ +125°C | ±25 | ±50 | mA | |
| Output Current | IO | −40°C ≤ TA ≤ +125°C | ±30 | ±15 | mA | |
| Power Supply Rejection Ratio | PSRR | VS = 2.7 V to 5.5 V | 115 | 130 | dB | |
| Supply Current per Amplifier | ISY | VO = VS/2 | 0.85 | 1.1 | mA |
Key Features
- Lowest Auto-Zero Amplifier Noise: The AD8630ARZ-REEL features extremely low noise, with a voltage noise of 0.5 µV p-p (0.1 Hz to 10 Hz) and a voltage noise density of 22 nV/√Hz at 1 kHz.
- Low Offset Voltage and Drift: It has an offset voltage of only 1 µV and an input offset drift of less than 0.005 µV/°C.
- Rail-to-Rail Input and Output Swing: The amplifier supports rail-to-rail input and output swing, maximizing signal-to-noise ratio (SNR) and reducing input biasing complexity.
- High Gain, CMRR, and PSRR: It offers high gain, common-mode rejection ratio (CMRR), and power supply rejection ratio (PSRR) of up to 130 dB.
- Low Input Bias Current and Supply Current: The amplifier has a very low input bias current of 100 pA maximum and a low supply current of 1.0 mA.
- No External Components Required: The AD8630ARZ-REEL does not require any external capacitors, simplifying circuit design.
Applications
- Automotive Sensors: Suitable for use in automotive sensors due to its high precision and low drift.
- Pressure and Position Sensors: Ideal for pressure and position sensors where high accuracy is crucial.
- Strain Gage Amplifiers: Used in strain gage amplifiers for precise measurement in various industrial applications.
- Medical Instrumentation: Applied in medical equipment where low noise and high accuracy are essential.
- Thermocouple Amplifiers: Used in thermocouple amplifiers for precise temperature measurements.
- Precision Current Sensing and Photodiode Amplifiers: Suitable for precision current sensing and photodiode amplifiers due to its low noise and high accuracy.
Q & A
- What is the typical offset voltage of the AD8630ARZ-REEL?
The typical offset voltage is 1 µV. - What is the input offset drift of the AD8630ARZ-REEL?
The input offset drift is less than 0.005 µV/°C. - Does the AD8630ARZ-REEL require any external capacitors?
No, it does not require any external capacitors. - What is the common-mode rejection ratio (CMRR) of the AD8630ARZ-REEL?
The CMRR is up to 130 dB. - What is the power supply rejection ratio (PSRR) of the AD8630ARZ-REEL?
The PSRR is up to 130 dB. - What is the typical supply current per amplifier for the AD8630ARZ-REEL?
The typical supply current per amplifier is 1.0 mA. - What are the operating temperature ranges for the AD8630ARZ-REEL?
The operating temperature range is from −40°C to +125°C. - What are some common applications of the AD8630ARZ-REEL?
Common applications include automotive sensors, pressure and position sensors, strain gage amplifiers, medical instrumentation, thermocouple amplifiers, and precision current sensing and photodiode amplifiers. - What is the slew rate of the AD8630ARZ-REEL?
The slew rate is 1.0 V/µs. - What is the gain bandwidth product (GBP) of the AD8630ARZ-REEL?
The gain bandwidth product is 2.5 MHz.
