Overview
The AD202KY, produced by Analog Devices Inc., is a general-purpose, two-port, transformer-coupled isolation amplifier. This device is designed to provide total galvanic isolation between the input and output stages, ensuring that input signals can be measured, processed, and transmitted without a galvanic connection. The AD202KY is particularly useful in applications requiring high accuracy, high common-mode rejection ratio (CMR), and significant signal and power isolation. It is available in compact plastic SIP or DIP style packages, making it suitable for a wide range of industrial and automotive applications where temperature extremes may be encountered.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Gain Range | 1 V/V to 100 V/V | |
| Error | ±0.5% typ (±4% max) | |
| Temperature Drift | ±20 ppm/°C typ (±45 ppm/°C max) | |
| Time Drift | ±50 ppm/1000 Hours | |
| Supply Voltage Drift | ±0.01%/V | |
| Nonlinearity (G = 1 V/V) | ±0.05% max (±0.025% max for K Grade) | |
| Common-Mode Isolation | ±2000 V pk Continuous (K Grade) | |
| Common-Mode Rejection Ratio (CMR) | 130 dB (Gain = 100 V/V) | |
| Isolated Power Output | ±7.5 V, 2 mA (Either Output) | |
| Power Consumption | 75 mW (AD202), 35 mW (AD204) | For AD202 and AD204 respectively |
| Operating Temperature Range | -40°C to 85°C |
Key Features
- High Accuracy: ±0.025% max nonlinearity (K Grade).
- High CMR: 130 dB (Gain = 100 V/V).
- High CMV Isolation: ±2000 V pk Continuous (K Grade) for both signal and power isolation.
- Isolated Power Outputs: ±7.5 V at 2 mA (Either Output).
- Uncommitted Input Amplifier: Provides buffering and gain as required, facilitating various input functions such as filtering, summing, high voltage ranges, and current (transimpedance) input.
- Compact Design: Available in SIP or DIP style packages, with a small size of 4 channels/inch.
- Low Power Consumption: Ideal for applications with large channel counts or tight power budgets.
Applications
- Multichannel Data Acquisition: Suitable for multiple channel data acquisition systems.
- Current Shunt Measurements: Used in current measurement applications.
- Motor Controls: Applied in motor control systems.
- Process Signal Isolation: Isolates process signals in industrial environments.
- High Voltage Instrumentation Amplifier: Used in high voltage instrumentation applications.
Q & A
- What is the primary function of the AD202KY isolation amplifier?
The AD202KY is designed to provide total galvanic isolation between the input and output stages, allowing input signals to be measured, processed, and transmitted without a galvanic connection.
- What is the gain range of the AD202KY?
The gain range of the AD202KY is from 1 V/V to 100 V/V.
- What is the common-mode rejection ratio (CMR) of the AD202KY?
The CMR of the AD202KY is 130 dB at a gain of 100 V/V.
- How much isolated power can the AD202KY supply?
The AD202KY can supply ±7.5 V at 2 mA (either output).
- What is the operating temperature range of the AD202KY?
The operating temperature range of the AD202KY is -40°C to 85°C.
- What types of packages are available for the AD202KY?
The AD202KY is available in compact plastic SIP or DIP style packages.
- What are some common applications of the AD202KY?
Common applications include multichannel data acquisition, current shunt measurements, motor controls, process signal isolation, and high voltage instrumentation.
- Does the AD202KY have an uncommitted input amplifier?
Yes, the AD202KY features an uncommitted input amplifier that provides buffering and gain as required.
- How much power does the AD202KY consume?
The AD202KY consumes 75 mW of power, making it suitable for applications with tight power budgets.
- What is the common-mode isolation voltage of the AD202KY?
The common-mode isolation voltage of the AD202KY is ±2000 V pk Continuous (K Grade).
