Overview
The AD202JY, produced by Analog Devices Inc., is a general-purpose, two-port, transformer-coupled isolation amplifier. This device is designed to be used in a broad range of applications where input signals must be measured, processed, and/or transmitted without a galvanic connection. The AD202JY offers complete isolation of both signal and power in a single compact plastic SIP (Single In-Line Package) or DIP (Dual In-Line Package) style package. It is powered directly from a +15 V DC supply and eliminates the need for an external DC/DC converter, thereby reducing design and component costs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gain Range | 1 V/V to 100 V/V | |
| Gain Error | ±0.5% typ (±4% max) | |
| Gain vs. Temperature | ±20 ppm/°C typ (±45 ppm/°C max) | |
| Gain vs. Time | ±50 ppm/1000 Hours | |
| Gain vs. Supply Voltage | ±0.01%/V | |
| Nonlinearity (G = 1 V/V) | ±0.05% max | |
| Common-Mode Isolation | ±1000 V pk continuous | |
| Common-Mode Rejection Ratio (CMRR) | 130 dB (Gain = 100 V/V) | |
| Bandwidth | 5 kHz full-power | |
| Isolated Power Output | ±7.5 V at 0.4 mA | |
| Power Consumption | 75 mW over full signal range |
Key Features
- High Accuracy: ±0.025% max nonlinearity (K grade).
- High CMR: 130 dB (Gain = 100 V/V).
- High CMV Isolation: ±1000 V pk continuous (J grade), ±2000 V pk continuous (K grade).
- Isolated Power Outputs: ±7.5 V at 0.4 mA, sufficient for operating low-drift input preamps, adjustment networks, or low power references and op amps.
- Uncommitted Input Amplifier: Provides buffering and gain as required, facilitating various input functions such as filtering, summing, high voltage ranges, and current (transimpedance) input.
- Low Power Consumption: 75 mW over the full signal range, ideal for applications with large channel counts or tight power budgets.
- Compact Package: Available in SIP or DIP style packages, minimizing space requirements.
Applications
- Multichannel Data Acquisition: Suitable for multiple channel applications due to its low power consumption and high accuracy.
- Current Shunt Measurements: Used in current measurement applications requiring isolation.
- Motor Controls: Applied in motor control systems where signal isolation is crucial.
- Process Signal Isolation: Ideal for isolating process signals in industrial environments.
- High Voltage Instrumentation Amplifier: Used in high voltage instrumentation where galvanic isolation is necessary.
Q & A
- What is the primary function of the AD202JY isolation amplifier?
The AD202JY is designed to measure, process, and transmit input signals without a galvanic connection, providing both signal and power isolation.
- What are the gain range and accuracy of the AD202JY?
The gain range is from 1 V/V to 100 V/V with an accuracy of ±0.5% typ (±4% max).
- What is the common-mode isolation voltage of the AD202JY?
The AD202JY provides ±1000 V pk continuous common-mode isolation for the J grade and ±2000 V pk for the K grade.
- What is the bandwidth of the AD202JY?
The full-power bandwidth of the AD202JY is 5 kHz.
- What is the power consumption of the AD202JY?
The power consumption is 75 mW over the full signal range.
- What type of package is the AD202JY available in?
The AD202JY is available in SIP (Single In-Line Package) or DIP (Dual In-Line Package) style packages.
- What are some typical applications of the AD202JY?
Typical applications include multichannel data acquisition, current shunt measurements, motor controls, process signal isolation, and high voltage instrumentation.
- Does the AD202JY have an uncommitted input amplifier?
Yes, the AD202JY includes an uncommitted op amp at the input stage for buffering and gain as required.
- What is the isolated power output of the AD202JY?
The isolated power output is ±7.5 V at 0.4 mA.
- Is the AD202JY sensitive to electrostatic discharge (ESD)?
Yes, the AD202JY is an ESD-sensitive device and requires proper handling to avoid damage.
