Overview
The ADA4505-2ACBZ-R7, produced by Analog Devices Inc., is a dual micropower operational amplifier designed for low-power and high-performance applications. This device is part of the ADA4505 family, which includes single, dual, and quad configurations. The ADA4505-2ACBZ-R7 is optimized for current consumption, power supply rejection ratio (PSRR), common-mode rejection ratio (CMRR), and zero crossover distortion, making it ideal for battery-powered and low-voltage systems.
Key Specifications
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | 0 V ≤ VCM ≤ 1.8 V | 0.5 mV | 3 mV | 4 mV | mV |
| Input Bias Current | IB | −40°C ≤ TA ≤ +85°C | 0.5 pA | 2 pA | 50 pA | pA |
| Input Offset Current | IOS | −40°C ≤ TA ≤ +85°C | 0.05 pA | 1 pA | 25 pA | pA |
| Common-Mode Rejection Ratio | CMRR | 0 V ≤ VCM ≤ 1.8 V | 85 dB | 100 dB | - | dB |
| Supply Current per Amplifier | ISY | VOUT = VSY/2 | 7 µA | 10 µA | 15 µA | µA |
| Slew Rate | SR | RL = 100 kΩ, CL = 20 pF, G = 1 | - | 6.5 mV/µs | - | mV/µs |
| Gain Bandwidth Product | GBP | RL = 1 MΩ, CL = 20 pF, G = 1 | - | 50 kHz | - | kHz |
| Phase Margin | ΦM | RL = 1 MΩ, CL = 20 pF, G = 1 | - | 52 Degrees | - | Degrees |
Key Features
- Rail-to-Rail Input and Output Swings: The ADA4505-2ACBZ-R7 operates with rail-to-rail input and output swings, ensuring maximum signal range and minimizing distortion.
- Low Power Consumption: With a typical supply current of 10 µA per amplifier, this device is highly suitable for battery-powered applications.
- High PSRR and CMRR: The device features high power supply rejection ratio (PSRR) and common-mode rejection ratio (CMRR), ensuring robust performance against power supply and common-mode noise.
- Low Noise: The amplifier has a low peak-to-peak voltage noise of 2.95 μV from 0.1 Hz to 10 Hz and a voltage noise density of 65 nV/√Hz at 1 kHz.
- No Phase Reversal: The ADA4505-2ACBZ-R7 does not exhibit phase reversal, which is crucial for maintaining signal integrity.
Applications
- Battery-Powered Devices: Ideal for applications where battery voltage decreases over time, such as in portable electronics and medical devices.
- Low-Voltage Systems: Suitable for systems operating at low supply voltages, including IoT devices and wearable technology.
- Audio and Signal Processing: The low noise and high CMRR make it suitable for audio and signal processing applications.
- Industrial and Automotive Systems: Can be used in industrial and automotive systems where low power consumption and robust performance are required.
Q & A
- What is the typical offset voltage of the ADA4505-2ACBZ-R7?
The typical offset voltage is 3 mV. - What is the supply current per amplifier for the ADA4505-2ACBZ-R7?
The typical supply current per amplifier is 10 µA. - What is the common-mode rejection ratio (CMRR) of the ADA4505-2ACBZ-R7?
The CMRR is typically 100 dB. - Does the ADA4505-2ACBZ-R7 exhibit phase reversal?
No, the ADA4505-2ACBZ-R7 does not exhibit phase reversal. - What is the slew rate of the ADA4505-2ACBZ-R7?
The slew rate is typically 6.5 mV/µs. - What is the gain bandwidth product (GBP) of the ADA4505-2ACBZ-R7?
The GBP is typically 50 kHz. - What is the phase margin of the ADA4505-2ACBZ-R7?
The phase margin is typically 52 degrees. - What is the input bias current of the ADA4505-2ACBZ-R7?
The input bias current is typically 2 pA. - What is the input offset current of the ADA4505-2ACBZ-R7?
The input offset current is typically 1 pA. - What are some common applications of the ADA4505-2ACBZ-R7?
Common applications include battery-powered devices, low-voltage systems, audio and signal processing, and industrial and automotive systems.
