Overview
The AD8538ARZ-REEL, produced by Analog Devices Inc., is a low-power, precision, auto-zero operational amplifier. This component is part of the AD8538/AD8539 family, known for its high accuracy and low power consumption. It is designed to operate over a wide range of supply voltages, from 2.7 V to 5.5 V single supply or ±1.35 V to ±2.5 V dual supply, making it versatile for various applications. The AD8538ARZ-REEL is particularly suited for applications requiring low offset voltage, low input bias current, and high gain.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | 2.7 | 5.5 | V | ||
| Offset Voltage (VOS) | −40°C ≤ TA ≤ +125°C | 5 | 16 | 30 | µV |
| Input Offset Drift (∆VOS/∆T) | −40°C ≤ TA ≤ +125°C | 0.03 | µV/°C | ||
| Input Bias Current (IB) | −40°C ≤ TA ≤ +125°C | 25 | pA | ||
| Supply Current per Amplifier (ISY) | −40°C ≤ TA ≤ +125°C | 150 | 180 | 215 | µA |
| Slew Rate (SR) | RL = 10 kΩ | 0.35 | V/µs | ||
| Settling Time (tS) 0.01% | G = ±1, 1 V step, CL = 20 pF, RL = 1 kΩ | 5 | µs | ||
| Gain Bandwidth Product (GBP) | 430 | kHz | |||
| Phase Margin (ØM) | RL = 10 kΩ, CL = 20 pF | 65 | Degrees | ||
| Voltage Noise Density (en) | f = 1 kHz | 50 | nV/√Hz |
Key Features
- Low Offset Voltage: Maximum offset voltage of 13 µV and low input offset drift of 0.03 µV/°C.
- Single-Supply Operation: Operates from 2.7 V to 5.5 V single supply or ±1.35 V to ±2.5 V dual supply.
- High Gain and CMRR/PSRR: High gain, common-mode rejection ratio (CMRR), and power supply rejection ratio (PSRR).
- Low Input Bias Current: Very low input bias current of 25 pA.
- Low Supply Current: Low supply current of 180 µA per amplifier.
- Automotive Qualification: Qualified for automotive applications.
Applications
- Mobile Communications: Suitable for use in mobile communication devices due to its low power consumption and high accuracy.
- Portable Instrumentation: Ideal for portable instrumentation where low power and precision are critical.
- Medical Instrumentation: Used in medical devices requiring low noise and high precision.
- Temperature Sensors and Pressure Sensors: Can be used in temperature and pressure sensing applications.
- Power Supply Systems: Can be integrated into power supply systems for improved stability and accuracy.
Q & A
- What is the operating voltage range of the AD8538ARZ-REEL?
The AD8538ARZ-REEL operates from 2.7 V to 5.5 V single supply or ±1.35 V to ±2.5 V dual supply.
- What is the maximum offset voltage of the AD8538ARZ-REEL?
The maximum offset voltage is 13 µV.
- What is the input offset drift of the AD8538ARZ-REEL?
The input offset drift is 0.03 µV/°C.
- What is the typical supply current per amplifier for the AD8538ARZ-REEL?
The typical supply current per amplifier is 180 µA.
- What is the slew rate of the AD8538ARZ-REEL?
The slew rate is 0.35 V/µs for a load resistance of 10 kΩ.
- What is the gain bandwidth product (GBP) of the AD8538ARZ-REEL?
The gain bandwidth product is 430 kHz.
- Is the AD8538ARZ-REEL qualified for automotive applications?
- What is the phase margin of the AD8538ARZ-REEL?
The phase margin is 65 degrees for a load resistance of 10 kΩ and a load capacitance of 20 pF.
- What is the voltage noise density of the AD8538ARZ-REEL at 1 kHz?
The voltage noise density at 1 kHz is 50 nV/√Hz.
- What are some common applications of the AD8538ARZ-REEL?
