Overview
The AD8638ARZ-REEL7 is a precision operational amplifier manufactured by Analog Devices Inc. This component is part of the AD8638 series, known for its auto-zero topology, which combines low cost with high accuracy and low noise. The AD8638ARZ-REEL7 is particularly suited for applications requiring minimal error sources, such as position and pressure sensors, medical equipment, and strain gage amplifiers. It operates over an extended industrial temperature range of −40°C to +125°C and is available in an 8-lead SOIC package.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | AD8638ARZ-REEL7 |
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Bandwidth | 1.35 MHz |
| Offset Voltage | Typical 3 μV |
| Offset Voltage Drift | 0.01 μV/°C (except SOT-23) |
| Noise | 1.2 μV p-p (0.1 Hz to 10 Hz) |
| Input Resistance | 22.5 TΩ |
| Input Capacitance (Differential Mode) | 4 pF |
| Input Capacitance (Common Mode) | 1.7 pF |
| Output Voltage High | 4.97 V (RL = 10 kΩ to VCM) |
| Supply Voltage | ±2.5 V to ±8 V dual supply |
| Operating Temperature Range | −40°C to +125°C |
Key Features
- Auto-Zero Topology: Combines low cost with high accuracy and low noise, eliminating the need for external capacitors.
- Rail-to-Rail Output: Ensures the output voltage can swing from the negative to the positive supply rail.
- Low Offset Voltage and Drift: Typical offset voltage of 3 μV and drift of 0.01 μV/°C, making it suitable for high-precision applications.
- Low Noise: Voltage noise of 1.2 μV p-p (0.1 Hz to 10 Hz) and noise density of 60 nV/√Hz at 1 kHz.
- High Input Resistance: 22.5 TΩ input resistance, minimizing the impact on the input signal.
- Extended Industrial Temperature Range: Operates from −40°C to +125°C, making it suitable for a wide range of environments.
Applications
- Position and Pressure Sensors: The low drift and high accuracy make it ideal for sensor applications.
- Medical Equipment: Suitable for medical devices requiring high precision and low noise.
- Strain Gage Amplifiers: Used in strain gage applications where minimal error sources are critical.
- Industrial Automation: Can be used in various industrial automation applications requiring precise signal amplification.
Q & A
- What is the typical offset voltage of the AD8638ARZ-REEL7?
The typical offset voltage is 3 μV.
- What is the operating temperature range of the AD8638ARZ-REEL7?
The operating temperature range is −40°C to +125°C.
- What package type is the AD8638ARZ-REEL7 available in?
The AD8638ARZ-REEL7 is available in an 8-lead SOIC package.
- What is the bandwidth of the AD8638ARZ-REEL7?
The bandwidth is 1.35 MHz.
- Does the AD8638ARZ-REEL7 require external capacitors?
No, the AD8638ARZ-REEL7 does not require external capacitors due to its auto-zero topology.
- What is the input resistance of the AD8638ARZ-REEL7?
The input resistance is 22.5 TΩ.
- What are the typical noise specifications of the AD8638ARZ-REEL7?
The voltage noise is 1.2 μV p-p (0.1 Hz to 10 Hz) and the noise density is 60 nV/√Hz at 1 kHz.
- What are some common applications for the AD8638ARZ-REEL7?
Common applications include position and pressure sensors, medical equipment, and strain gage amplifiers.
- What is the supply voltage range for the AD8638ARZ-REEL7?
The supply voltage range is ±2.5 V to ±8 V dual supply.
- Is the AD8638ARZ-REEL7 RoHS compliant?
Yes, the AD8638ARZ-REEL7 is RoHS compliant.
