Overview
The AD202JN is a general-purpose, two-port, transformer-coupled isolation amplifier produced by Analog Devices Inc. This device is designed to provide total galvanic isolation between the input and output stages, making it suitable for applications where input signals must be measured, processed, and/or transmitted without a galvanic connection. The AD202JN eliminates the need for an external dc-to-dc converter, reducing circuit overhead and component costs. It is powered directly from a +15 V DC supply and features an uncommitted input amplifier for flexibility in various applications.
Key Specifications
| Parameter | Value |
|---|---|
| Gain Range | 1 V/V to 100 V/V |
| Error | ±0.5% typ (±4% max) |
| Nonlinearity (G = 1 V/V) | ±0.05% max (J Grade), ±0.025% max (K Grade) |
| Common-Mode Rejection Ratio (CMR) | 130 dB at Gain = 100 V/V |
| Common-Mode Voltage Isolation | ±1000 V pk continuous (J Grade), ±2000 V pk continuous (K Grade) |
| Bandwidth | 2 kHz at VO ≤ 10 V p-p, G = 1 V–50 V/V |
| Isolated Power Output | ±7.5 V at 0.4 mA |
| Power Supply | +15 V DC ± 5% |
| Package Type | DIP-11 |
| Operating Temperature | 0°C to 70°C |
Key Features
- Small size: 4 channels/inch, compact plastic SIP or DIP style package
- High accuracy: ±0.025% max nonlinearity (K Grade)
- High CMR: 130 dB at Gain = 100 V/V
- High CMV isolation: ±2000 V pk continuous (K Grade)
- Isolated power outputs: ±7.5 V at 0.4 mA
- Uncommitted input amplifier for buffering and gain as required
- Low power consumption: 75 mW over the full signal range
Applications
- Multichannel data acquisition
- Current shunt measurements
- Motor controls
- Process signal isolation
- High voltage instrumentation amplifier
Q & A
- What is the primary function of the AD202JN isolation amplifier? The AD202JN provides total galvanic isolation between the input and output stages, allowing for the measurement, processing, and transmission of signals without a galvanic connection.
- What is the gain range of the AD202JN? The gain range is from 1 V/V to 100 V/V.
- What is the common-mode rejection ratio (CMR) of the AD202JN? The CMR is 130 dB at a gain of 100 V/V.
- What is the maximum common-mode voltage isolation for the AD202JN? For the J Grade, it is ±1000 V pk continuous, and for the K Grade, it is ±2000 V pk continuous.
- What is the bandwidth of the AD202JN? The bandwidth is 2 kHz at VO ≤ 10 V p-p, G = 1 V–50 V/V.
- How is the AD202JN powered? It is powered directly from a +15 V DC supply.
- What is the isolated power output of the AD202JN? The isolated power output is ±7.5 V at 0.4 mA.
- What are some common applications of the AD202JN? Common applications include multichannel data acquisition, current shunt measurements, motor controls, process signal isolation, and high voltage instrumentation amplifier.
- What package type is the AD202JN available in? The AD202JN is available in a DIP-11 package.
- What is the operating temperature range of the AD202JN? The operating temperature range is from 0°C to 70°C.
