Overview
The ADA4638-1ARZ-RL, produced by Analog Devices Inc., is a precision operational amplifier (op-amp) known for its zero-drift and rail-to-rail output characteristics. This device is designed for high precision applications where minimal error and drift are crucial. It operates over a wide temperature range of −40°C to +125°C, making it suitable for industrial and harsh environment applications. The ADA4638-1ARZ-RL is available in an 8-lead SOIC package and is part of Analog Devices' zero-drift op-amp portfolio.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (Single/Dual) | 4.5 V / ±2.25 V | 30 V / ±15 V | V | |
| Input Offset Voltage | 4 μV | μV | ||
| Input Offset Voltage Drift | 0.05 μV/°C | μV/°C | ||
| Gain Bandwidth Product | 1.5 MHz | MHz | ||
| -3 dB Closed-Loop Bandwidth | 2.5 MHz | MHz | ||
| Slew Rate | 1.5 V/μs | V/μs | ||
| Input Bias Current | 45 pA | pA | ||
| Supply Current per Amplifier | 850 μA | μA | ||
| Output Current per Channel | 38 mA | mA | ||
| Operating Temperature Range | −40°C | +125°C | °C | |
| Package Type | 8-lead SOIC |
Key Features
- Zero-drift operation with an input offset voltage of 4 μV maximum and an offset voltage drift of 0.05 μV/°C maximum.
- Rail-to-rail output swing to maximize signal-to-noise ratio (SNR).
- Single supply operation from 4.5 V to 30 V and dual supply operation from ±2.25 V to ±15 V.
- High gain of 130 dB minimum, high PSRR of 120 dB minimum, and high CMRR of 130 dB minimum.
- No 1/f noise and low input voltage noise of 1.2 μV p-p (0.1 Hz to 10 Hz).
- Low power consumption with a supply current of less than 0.95 mA at ±5 V.
- Suitable for high precision applications such as pressure sensors, medical equipment, and strain gage amplifiers.
Applications
- Pressure sensors: The ADA4638-1ARZ-RL is ideal for precision measurement in pressure sensing applications due to its low offset voltage and drift.
- Medical equipment: Its high precision and stability make it suitable for medical devices requiring accurate signal amplification.
- Strain gage amplifiers: The amplifier's zero-drift and rail-to-rail output characteristics are beneficial for strain gage applications where signal integrity is critical.
- Industrial automation: The device's ability to operate over a wide temperature range makes it suitable for various industrial automation tasks.
Q & A
- What is the input offset voltage of the ADA4638-1ARZ-RL?
The input offset voltage of the ADA4638-1ARZ-RL is 4 μV maximum.
- What is the operating temperature range of the ADA4638-1ARZ-RL?
The operating temperature range is −40°C to +125°C.
- What are the supply voltage ranges for the ADA4638-1ARZ-RL?
The device can operate from a single supply of 4.5 V to 30 V or a dual supply of ±2.25 V to ±15 V.
- What is the gain bandwidth product of the ADA4638-1ARZ-RL?
The gain bandwidth product is 1.5 MHz.
- What is the slew rate of the ADA4638-1ARZ-RL?
The slew rate is 1.5 V/μs.
- What is the typical supply current of the ADA4638-1ARZ-RL?
The typical supply current is 850 μA.
- What are some common applications for the ADA4638-1ARZ-RL?
Common applications include pressure sensors, medical equipment, strain gage amplifiers, and industrial automation.
- Does the ADA4638-1ARZ-RL have rail-to-rail output swing?
Yes, the ADA4638-1ARZ-RL has rail-to-rail output swing to maximize the signal-to-noise ratio (SNR).
- What is the input bias current of the ADA4638-1ARZ-RL?
The input bias current is 45 pA.
- Is the ADA4638-1ARZ-RL suitable for high precision applications?
Yes, it is highly suitable due to its zero-drift operation, low offset voltage, and low noise characteristics.
