Overview
The ADA4505-2ARMZ-RL, produced by Analog Devices Inc., is a dual micropower operational amplifier that features rail-to-rail input and output swings. This amplifier is designed to optimize performance in current consumption, power supply rejection ratio (PSRR), common-mode rejection ratio (CMRR), and zero crossover distortion. It is particularly suited for battery-powered applications due to its low power consumption and robust performance over a wide range of supply voltages.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | 0 V ≤ VCM ≤ 5 V | 0.5 | 3 | 4 | mV |
| Input Bias Current | IB | −40°C ≤ TA ≤ +85°C | 0.5 | 2 | 50 | pA |
| Input Offset Current | IOS | −40°C ≤ TA ≤ +85°C | 0.05 | 1 | 25 | pA |
| Input Voltage Range | −40°C ≤ TA ≤ +125°C | 0 | 5 | V | ||
| Common-Mode Rejection Ratio | CMRR | 0 V ≤ VCM ≤ 5 V | 90 | 105 | dB | |
| Power Supply Rejection Ratio | PSRR | VSY = 1.8 V to 5 V | 100 | 110 | 95 | dB |
| Supply Current per Amplifier | ISY | VOUT = VSY/2 | 7 | 10 | 15 | μA |
| Slew Rate | SR | RL = 100 kΩ, CL = 20 pF, G = 1 | 6.5 | mV/μs | ||
| Gain Bandwidth Product | GBP | RL = 1 MΩ, CL = 20 pF, G = 1 | 50 | kHz | ||
| Phase Margin | ΦM | RL = 1 MΩ, CL = 20 pF, G = 1 | 52 | Degrees | ||
| Voltage Noise (p-p) | en | f = 0.1 Hz to 10 Hz | 2.95 | μV |
Key Features
- Rail-to-Rail Input and Output Swings: Operates from a single 1.8 V to 5 V power supply or from dual ±0.9 V to ±2.5 V power supplies, ensuring full range operation.
- Low Power Consumption: Supply current per amplifier is less than 10 μA, making it ideal for battery-powered applications.
- High CMRR and PSRR: Maintains high common-mode rejection ratio and power supply rejection ratio, minimizing errors due to power supply voltage variations.
- Zero Crossover Distortion: Ensures no phase reversal and excellent performance in low voltage battery-powered applications.
- Low Noise: Features low peak-to-peak voltage noise and low voltage noise density, enhancing signal integrity.
- Low Input Bias Current: Typical input bias current of 0.5 pA, reducing errors in high impedance circuits.
Applications
- Pressure and Position Sensors: Ideal for precision measurement in various sensor applications.
- Remote Security and Medical Monitors: Suitable for remote and handheld instrumentation due to its low power and high accuracy.
- Battery-Powered Consumer Equipment: Optimized for devices that require long battery life and reliable performance.
- Hazard Detectors: Used in smoke, fire, and gas detectors where low power and high reliability are crucial.
Q & A
- What is the typical offset voltage of the ADA4505-2?
The typical offset voltage is 0.5 mV to 3 mV.
- What is the input bias current of the ADA4505-2?
The typical input bias current is 0.5 pA to 2 pA.
- What is the common-mode rejection ratio (CMRR) of the ADA4505-2?
The CMRR is typically 105 dB.
- What is the power supply rejection ratio (PSRR) of the ADA4505-2?
The PSRR is typically 110 dB.
- What is the supply current per amplifier for the ADA4505-2?
The supply current per amplifier is typically 10 μA.
- What is the slew rate of the ADA4505-2?
The slew rate is typically 6.5 mV/μs.
- What is the gain bandwidth product (GBP) of the ADA4505-2?
The GBP is typically 50 kHz.
- What is the phase margin of the ADA4505-2?
The phase margin is typically 52 degrees.
- What are the typical applications of the ADA4505-2?
It is used in pressure and position sensors, remote security and medical monitors, battery-powered consumer equipment, and hazard detectors.
- What is the operating temperature range of the ADA4505-2?
The operating temperature range is −40°C to +125°C.
