Overview
The ADA4505-4ARUZ-RL is a quad micropower operational amplifier from Analog Devices Inc., designed to optimize performance in low-voltage, battery-powered applications. This amplifier features rail-to-rail input and output swings, operating from a single 1.8 V to 5 V power supply or from dual ±0.9 V to ±2.5 V power supplies. The ADA4505-4 is part of the ADA4505-x family, which includes single, dual, and quad amplifier configurations. These amplifiers are known for their low current consumption, high power supply rejection ratio (PSRR), common-mode rejection ratio (CMRR), and zero crossover distortion, making them ideal for applications requiring precision and low power consumption.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Offset Voltage | VOS | 0.5 | 3 | 4 | mV |
| Input Bias Current | IB | 0.5 | 2 | 50 | pA |
| Input Offset Current | IOS | 0.05 | 1 | 25 | pA |
| Input Voltage Range | 0 | 1.8 | V | ||
| Common-Mode Rejection Ratio | CMRR | 85 | 100 | dB | |
| Power Supply Rejection Ratio | PSRR | 100 | 110 | dB | |
| Supply Current per Amplifier | ISY | 7 | 10 | 15 | μA |
| Slew Rate | SR | 6 | mV/μs | ||
| Gain Bandwidth Product | GBP | 50 | kHz | ||
| Phase Margin | ΦM | 52 | Degrees |
Key Features
- Rail-to-rail input and output swings for full signal utilization.
- Low power consumption with a supply current of less than 10 μA per amplifier.
- High PSRR and CMRR to minimize errors due to power supply voltage variations.
- Zero crossover distortion for accurate signal processing.
- Low input bias current and offset voltage for high precision.
- Available in various packages including 14-lead TSSOP and 14-ball WLCSP.
- Operates over industrial and extended industrial temperature ranges (−40°C to +85°C and −40°C to +125°C).
Applications
- Battery-powered consumer equipment.
- Remote security systems.
- Medical monitors and patient care devices.
- Pressure and position sensors.
- Hazard detectors (e.g., smoke, fire, and gas detectors).
- Handheld instrumentation.
Q & A
- What is the operating voltage range of the ADA4505-4ARUZ-RL?
The ADA4505-4ARUZ-RL operates from a single 1.8 V to 5 V power supply or from dual ±0.9 V to ±2.5 V power supplies.
- What are the key benefits of the ADA4505-4ARUZ-RL in battery-powered applications?
The ADA4505-4ARUZ-RL minimizes errors due to power supply voltage variations over the lifetime of the battery and maintains high CMRR, making it ideal for battery-powered applications.
- What is the typical offset voltage of the ADA4505-4ARUZ-RL?
The typical offset voltage is 500 μV.
- What is the slew rate of the ADA4505-4ARUZ-RL?
The slew rate is 6 mV/μs.
- What are the available package options for the ADA4505-4ARUZ-RL?
The ADA4505-4ARUZ-RL is available in a 14-lead TSSOP and a 14-ball WLCSP.
- What is the common-mode rejection ratio (CMRR) of the ADA4505-4ARUZ-RL?
The CMRR is typically 100 dB.
- What is the power supply rejection ratio (PSRR) of the ADA4505-4ARUZ-RL?
The PSRR is typically 110 dB.
- What is the supply current per amplifier for the ADA4505-4ARUZ-RL?
The supply current per amplifier is typically 10 μA.
- What are some typical applications of the ADA4505-4ARUZ-RL?
Typical applications include battery-powered consumer equipment, remote security systems, medical monitors, pressure and position sensors, and hazard detectors.
- What temperature ranges does the ADA4505-4ARUZ-RL operate over?
The ADA4505-4ARUZ-RL operates over both the industrial temperature range (−40°C to +85°C) and the extended industrial temperature range (−40°C to +125°C).
