Overview
The AD204KY is a general-purpose, two-port, transformer-coupled isolation amplifier produced by Analog Devices Inc. This component is designed to provide complete galvanic isolation between the input and output stages, making it suitable for a wide range of applications where input signals must be measured, processed, and/or transmitted without a galvanic connection. The AD204KY is available in a compact 10-lead SIP package, offering high channel density and low power consumption.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gain Range | 1 V/V to 100 V/V | |
| Nonlinearity (G = 1 V/V) | ±0.025% max (K grade) | |
| Common Mode Rejection Ratio (CMRR) | 130 dB (Gain = 100 V/V) | |
| Common Mode Voltage Isolation | ±2000 V pk continuous (K grade) | |
| 3 dB Bandwidth | 5 kHz | |
| Input Bias Current | 30 pA | |
| Input Offset Voltage | 15 mV | |
| Input Resistance | 2 GΩ | |
| Output Current per Channel | 2 mA | |
| Supply Voltage Range | 13.5 V to 16.5 V | |
| Operating Temperature Range | -40°C to +85°C | |
| Package Type | 10-Lead SIP |
Key Features
- High Accuracy: Maximum nonlinearity of ±0.025% for K grade models, ensuring high signal integrity.
- Low Power Consumption: Consumes only 35 mW of power, making it ideal for applications with large channel counts or tight power budgets.
- Wide Bandwidth: Full-power bandwidth of 5 kHz, suitable for wideband signals and control loops.
- High Common Mode Rejection Ratio (CMRR): 130 dB at a gain of 100 V/V, providing excellent common-mode performance.
- Isolated Power Outputs: Supplies isolated power of ±7.5 V at 2 mA, sufficient for operating low-drift input preamps or other ancillary circuits.
- Uncommitted Input Amplifier: An uncommitted op amp at the input stage allows for buffering, gain adjustment, and various input functions such as filtering and summing.
- Compact Package: Available in a 10-lead SIP package, offering high channel density and a low profile.
Applications
- Multichannel Data Acquisition: Suitable for applications requiring multiple isolated channels.
- Current Shunt Measurements: Ideal for measuring current in high-voltage or high-current systems.
- Motor Controls: Used in motor control systems to isolate feedback signals.
- Process Signal Isolation: Isolates process signals to prevent ground loops and ensure signal integrity.
- High Voltage Instrumentation Amplifier: Used in high-voltage measurement and instrumentation applications.
Q & A
- What is the primary function of the AD204KY isolation amplifier?
The AD204KY is designed to provide complete galvanic isolation between the input and output stages, allowing input signals to be measured, processed, and/or transmitted without a galvanic connection.
- What are the key benefits of using the AD204KY?
The key benefits include high accuracy, low power consumption, wide bandwidth, high CMRR, isolated power outputs, and an uncommitted input amplifier.
- What is the maximum nonlinearity of the AD204KY?
The maximum nonlinearity is ±0.025% for K grade models.
- What is the common mode rejection ratio (CMRR) of the AD204KY?
The CMRR is 130 dB at a gain of 100 V/V.
- What is the bandwidth of the AD204KY?
The full-power bandwidth is 5 kHz.
- What is the power consumption of the AD204KY?
The power consumption is 35 mW.
- What type of package is the AD204KY available in?
The AD204KY is available in a 10-lead SIP package.
- What are some common applications of the AD204KY?
Common applications include multichannel data acquisition, current shunt measurements, motor controls, process signal isolation, and high voltage instrumentation.
- What is the operating temperature range of the AD204KY?
The operating temperature range is -40°C to +85°C.
- Does the AD204KY provide isolated power outputs?
Yes, the AD204KY can supply isolated power of ±7.5 V at 2 mA.
